Line Isolation monitor testing and replacement services in San Francisco
Line Isolation monitor testing and replacement services in San Francisco
BiomedRx is a medical equipment maintenance company. We specialize in the installation, repair, calibration, preventive maintenance and electrical safety inspection of medical equipment. We service all modalities of diagnostic and therapeutic medical equipment. We also provide support for medical imaging and scientific laboratory equipment. We provide service to the US government as a veteran-owned, minority-owned business. Our principles hold high levels of security clearance.

We offer hospitals comprehensive asset management programs that streamline maintenance operations. Our programs are designed to reduce the cost of medical equipment ownership, while ensuring maximum equipment uptime and quality of patient care.

We offer medical equipment manufacturers an outsourced field service solution. Through our international network of medical equipment service organizations, we perform installations, repairs, preventive maintenance inspections, field modifications, recalls and upgrades, in honor of your warranty or service contract relationships. We also provide applications assistance and on-site educational services for equipment operators and biomedical equipment maintenance technicians.
Our biomedical equipment maintenance services include medical equipment installation, repair, calibration, preventive maintenance and electrical safety inspection. We service all modalities of diagnostic and therapeutic medical equipment, scientific laboratory equipment, medical imaging and information technology. Our principals are US Air Force trained BMET's (Biomedical Equipment Maintenance Technicians) who are capable of troubleshooting and repairing any medical device.
BiomedRx provides asset management services for hospitals and other healthcare providers. We provide the most comprehensive program for clinical equipment lifecycle management. Our asset management program consists of:
  • Medical equipment repair and maintenance.
  • Inventory control and database maintenance.
  • Scheduling and procedures for Preventive Maintenance, Calibration, and Electrical Safety Inspection of all equipment under contract.
  • Four hour telephone response, and 24 hour in-person response on repair calls.
  • Management of outsourced service relationships.
  • Transitioning outsourced service to in-house responsibility.
  • Service training to in-house biomedical maintenance personnel.
  • Applications assistance and user maintenance training to equipment operators.
  • Impartial assistance in medical equipment purchasing decisions.
  • Cost savings over manufacturer service contracts and extended warranties.
  • Documentation to satisfy Joint Commission, state, and other regulatory requirements.
  • Maximum operational uptime of your medical equipment assets.

  • We also provide support for auxiliary systems, such as isolated power systems and line isolation monitors, which require annual testing and recertification.

    Healthcare providers and organizations benefit greatly from our asset management program. Our program is designed to streamline your healthcare technology management profile, which improves medical equipment serviceability and saves the hospital money.

    We accomplish this by establishing comprehensive database records of equipment inventory, service parts and literature, maintenance procedures and historical maintenance records. We them implement an in-house training program for hospital biomedical equipment maintenance technicians designed to empower them to assume maintenance responsibility for equipment for which maintenance is presently being outsourced. We facilitate the early cancellation and/or renegotiation of service contracts through our ability to provide first-call service response during equipment malfunctions. We guarantee a four-hour response time, and are usually capable of resolving emergency repairs without assistance. In the rare instances where service assistance is needed, the cost of these one-time calls is far less than the cost of an annual service contract.

    Our comprehensive SQL database system maintains inventory control of your medical equipment, spare parts, service literature, specialized tools and test equipment. We maintain accurate and complete preventive maintenance procedures, PM schedules, and historical maintenance records.
    BiomedRx provides annual inspection and recertification if isolated power systems and line isolation monitors. We perform a thorough inspection of your electrical system and line isolation monitor, and provide you with the documentation required to satisfy Joint Commission, NFPA99, and other regulatory requirements. We even provide video documentation of our services. If you have questions about our isolated power system inspection and recertification services, call us today at (424) 204-2382.

    Here is a video documentation of a previous isolated power system inspection performed at the Veterans Administration Hospital, Los Angeles



    Lately there has been controversy in the hospital engineering community concerning the use of isolated power systems and the 2012 changes in the National Fire Protection Association standard, NFPA 99.

    Section 3.3.89 of NFPA99 2012 defines an Isolated Power System as "A system comprising an isolation transformer or its equivalent, a line isolation monitor, and its ungrounded circuit conductors."

    Section 3.3.9 of NFPA99 2012 defines a Line Isolation monitor testing and replacement services as "A test instrument designed to continually check the balanced and unbalanced impedance from each line of an isolated circuit to ground and equipped with a built-in test circuit to exercise the alarm without adding to the leakage current hazard." In an isolated power circuit, a ground fault would result in an alarm, but power would not be interrupted.

    Section 3.3.184 of NFPA99 2012 defines a Wet Procedure Location as "The area in a patient care room where a procedure is performed that is normally subject to wet conditions while patients are present, including standing fluids on the floor or drenching of the work area, either of which condition is intimate to the patient or staff."

    Section 6.3.2.2.1.2(C) of NFPA99 2012 addresses isolated power with regard to Critical Care Areas and states "Where used in locations such as critical care areas, isolated power panels shall be permitted in those locations."

    Section 6.3.2.2.8 of NFPA99 2012 addresses Wet Procedure Locations.

    Section 6.3.2.2.8.1 of NFPA99 2012 states "Wet procedure locations shall be provided with special protection against electric shock."

    Section 6.3.2.2.8.4 of NFPA99 2012 states "Operating rooms shall be considered to be a wet procedure location, unless a risk assessment conducted by the health care governing body determines otherwise.

    This is the most controversial section. A risk assessment by the health care governing body can in fact deem an operating room not to be a wet procedure location. This would be contingent on interpretation of the mopping of the floor which occurs between cases as "drenching", as defined in Section 3.3.89 above.

    Section 6.3.2.2.8.6 of NFPA99 2012 states "The use of an isolated power system (IPS) shall be permitted as a protective means capable of limiting ground-fault current without power interruption. When installed, such a power system shall conform to the requirements of 6.3.2.6."

    Section 6.3.2.2.8.7 of NFPA99 2012 states "Operating rooms defined as wet procedure locations shall be protected by either isolated power or ground fault circuit interrupters."

    Section 6.3.2.2.9 of NFPA99 2012 addresses Isolated Power

    Section 6.3.2.2.9.2 of NFPA99 2012 states "The system shall be permitted to be installed where it conforms to the performance requirements specified in 6.3.2.6.

    Section 6.3.2.6.2.2 of NFPA99 2012 addresses Line Isolation monitor testing and replacement servicess

    Section 6.3.2.6.3.2 of NFPA99 2012 states "The monitor shall be designed such that a green signal lamp, conspicuously visible in the area where the line isolation monitor is utilized, remains lighted when the system is adequately isolated from ground; and an adjacent red signal lamp and an audible warning signal (remote if desired) shall be energized when the total hazard current (consisting of possible resistive or capacitive leakage currents) from either isolated conductor to ground reaches a threshold value of 5.0 mA under normal line voltage conditions. The line isolation monitor shall not alarm for a fault hazard current of less than 3.7 mA.

    This is interesting, as many of the Line Isolation monitor testing and replacement servicess still in use are older, often analog units that are set to alarm at only 2 mA. These units must be replaced immediately, as it is a violation of code to use them.

    Section 6.3.3.3 of NFPA99 2012 addresses Performance Criteria and Testing for Isolated Power Systems.

    Section 6.3.3.3.2 of NFPA99 2012 Line Isolation monitor testing and replacement services Tests states "The line isolation monitor (LIM) circuit shall be tested after installation, and prior to being placed in service, by successively grounding each line of the energized distribution system through a resistor whose value is 200 x V (ohms), where V equals measured line voltage. The visual and alarms shall be activated."

    Section 6.3.4.1 of NFPA99 2012 addresses Maintenance and Testing of the Electrical System.

    Section 6.3.4.1.4 of NFPA99 2012 states "The LIM circuit shall be tested at intervals of not more than 1 month by actuating the LIM test switch. For a LIM circuit with automated self-test and self-calibration capabilities, this test shall be performed at intervals of not more than 12 months. Actuation of the test switch shall activate both visual and audible alarm indicators.

    Section 6.3.4.2 of NFPA99 2012 addresses Record Keeping.

    Section 6.3.4.2.1.1 of NFPA99 2012 states "A record shall be maintained of the tests required by this chapter and associated repairs or modification.

    Section 6.3.4.2.1.2 of NFPA99 2012 states "At a minimum, the record shall contain the date, the rooms or areas tested, and an indication of which items have met, or have failed to meet, the performance requirements of this chapter.

    Section 6.3.4..2.2 of NFPA99 2012 Isolated Power System (Where Installed) states "A permanent record shall be kept of the results of each of the tests.

    Here is a video documentation of a previous isolated power system inspection performed (in English and Spanish) at Kindred Hospital in South Bay, California.



    BiomedRx maintains the highest standard of service, reporting and documentation in the healthcare industry. We perform the annual inspection of your isolated power systems, verify the operation/calibration of your line isolation monitors, and provide the necessary documentation to satisfy The Joint Commission and NFPA 99 requirements. In addition, we provide video documentation of all service visits. You can learn more about hospital isolated power distribution systems on a .PDF file you can download here.

    Please find the reasons to keep Isolated Power in all Operating Rooms:

    1. Reduced Shock Hazard

    2. Continuity of Power

    3. Line Noise Reduction, the transformer acts as an electrical filter.

    4. Advance warning system of what their equipment condition is.

    5. Reduced Fire Hazard

    6. Extra level of protection will keep down liability claims.

    Here is a video documentation of a previous isolated power system inspection performed Fountain Valley Hospital, California.



    In addition to biomedical engineering and equipment maintenance services, BiomedRx now offers testing and certification of isolated power systems and line isolation monitors. BiomedRx can bring any healthcare facility into compliance with NFPA code requirements.


    BiomedRx can perform the annual testing and re-certification of your system if it passes, and we can provide replacement or retrofitting of your system to bring it into compliance if it doesn't.

    BiomedRx testing of isolated power systems exceeds the requirements of NFPA 99 6.3.3.3 and 6.3.4.2.2. Our testing service includes:

    Testing of ungrounded isolated power systems and wiring.

    A complete inspection of all devices for polarity.

    Verification that all applicable sections of code requirements are being met.

    Confirmation that the impedance to ground of both conductors of the isolated system exceeds 200,000 ohms when installed. Document what corrective action that needs to be completed to meet that standard.

    Log voltage and millivolt readings for criteria for acceptability for new construction or existing rooms.

    Line isolation monitors will be tested and all readings will be taken to make sure that they not only are working but working within the specifications of the code requirements from when they were installed.

    Upon completion of testing, a technician shall meet with hospital medical and maintenance staff to explain the operation of isolated power systems; explain alarm procedures and answer any questions.

    Periodic testing and logging for future test required by NFPA 99 will be explained to maintenance staff.

    After all tests have been successfully completed, a written certification will show that all systems comply with codes, good installation practices and specifications. We will also provide written confirmation that the testing logbooks have been delivered to the hospital maintenance staff and that they are up to date.


    Training: "Administrative authorities should ascertain that electric maintenance personnel are completely familiar with the function and proper operation of ungrounded electric circuits." For liability and operation, has your hospital personnel, that are now maintaining your Isolated Power Systems, been trained by a proper instructor? Many hospitals had training when the equipment was first installed but after many years those individuals are no longer with the hospital. BiomedRx can train your current maintenance staff on any manufacturer's isolated power systems. NFPA 99 10.5.8.1.1 states "The Health Care Facilities shall provide programs of continuing education for its personnel.

    Here is a video documentation of a previous isolated power system inspection performed at Beach District Surgery Center, in California.



    BiomedRx services isolated power systems and line isolation monitors manufactured by:

    Amsco
    Auth
    Bender
    Crouse Hinds
    Edwards
    Electromagnetic Industries (EMI)
    Federal Pacific
    Federal Pioneer
    General Electric
    Hevi-Duty
    Hill-Rom
    Hospital Systems
    Isotrol
    Measurement Engineering Limited (MEL)
    Post Glover
    Russell & Stoll
    Square D
    Grainger
    Schneider

    Here is a video discussing recent controversies concerning the use and inspection of isolated power systems and line isolation monitors.



    BiomedRx has isolated power system and line isolation monitor testing and service centers in Alabama, Alaska, Arizona, Arkansas, California (Los Angeles, San Diego, San Francisco), Colorado, Connecticut, Delaware, Florida, Georgia, Hawaii, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachussetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming and Puerto Rico.
    Through the BiomedRx Institute, we provide medical equipment repair training to hospital biomedical equipment maintenance technicians. Our training is designed to reintegrate service responsibility for maintenance of such equipment as anesthesia, dialysis, laboratory, and medical imaging equipment from manufacturer service agreements. Our training has also been instrumental in helping biomed technicians obtain ICC certification.

    Our on-site training is performed at the client's location, on the same equipment the hospital's technicians will be responsible for servicing. Healthcare facilities have achieved great savings through the cancelation of expensive manufacturer service contracts once the hospital's biomed staff is qualified to service the equipment previously under a service agreement. In-house biomed staff welcome the training, as it increases job security and professional competence, and can be undertaken without taking time off work, or paying for travel, lodging, or per diem.

    Among our more popular training courses recently are:
  • Anesthesia Equipment maintenance training.
  • Isolated Power System and Line Isolation monitor testing and replacement services inspection and recertification.
  • Dialysis Equipment maintenance training.

  • If you are interested in learning more about BiomedRx on-site training services, call us today at (424) 204-2382 to schedule a free initial consultation.
    BiomedRx offers consulting services to hospitals and other healthcare providers. We provide guidance in the implementation of medical equipment maintenance programs, in-house technical training, and healthcare information technology.
    BiomedRx offers an outsourced field service solution to manufacturers of medical and scientific laboratory equipment. This is especially valuable to new manufacturers and manufacturers located outside of the United States. Our services are designed to provide a full field service solution, including medical equipment installation, repair, calibration, preventive maintenance and electrical safety inspection, and applications assistance to equipment operators. Through our Service Network, we can provide field service coverage across the United States and in many other countries.
    Independent medical equipment service organizations benefit from association with the BiomedRx Service Network. We provide an outsourced field service solution for medical equipment manufacturers and asset management programs for healthcare providers. Membership benefits include subcontracting opportunities in support of government, manufacturer, and healthcare provider contract relationships.
    Actors, entrepreneurs, elite executives, and other peak performers benefit from BiomedRx technology-based holistic and alternative healthcare services. The BiomedRx Health Center offers such services as Neurofeedback and Biomagnetic Pair therapy. This combination protocol promotes optimal health and wellbeing, and empowers peak performers to exceed their own expectations.
    Our service rate is $450.00 per hour for service and/or consulting.

    BiomedRx Inc.

    8306 Wilshire Blvd.
    Suite 777
    Beverly Hills, California
    90211

    Tel: (424) 204-2382

    Email: info@biomedrx.com

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    Line Isolation monitor testing and replacement services in San Francisco

    Line Isolation monitor testing and replacement services in San Francisco

    Line Isolation monitor testing and replacement services in San Francisco

    Line Isolation monitor testing and replacement services in San Francisco

    Line Isolation monitor testing and replacement services in San Francisco
    Line Isolation monitor testing and replacement services in San Francisco

    Line Isolation monitor testing and replacement services in San Francisco

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Line Isolation monitor testing and replacement services The chief staff surgeon can specify a traffic flow within the operating room, allowing the engineer to provide proper receptacle placement. When this happens, a low resistance path would electrically connect one turn of the primary winding with one turn of the secondary winding. Designed to fit into a 2-gang, 3 1/2 in.00 1016 15.2 of NFPA99 2012 states "At a minimum, the record shall contain the date, the rooms or areas tested, and an indication of which items have met, or have failed to meet, the performance requirements of this chapter.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Design Guide 19 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved II.8. If these parts are not properly grounded, a static charge could accumulate; the charge could reach a large enough value to automatically discharge as an electric static spark.00 1092 W A L L 10 6 7 13 9 1 2 8 3 12 14 11 Item Description Item Description 1 Isolation Transformer 3 kVA 120-120 8 Ground Bus Bar 2 Iso-Gard Line Isolation monitor testing and replacement services 9 Digital Elapsed Timer/Clock 3 Circuit Breaker Panel with: 10 Control for Digital Elapse Timer/Clock 1 Isolated Power System Inspection and Testing Primary Circuit Breaker � 30A, 2 Pole 11 Hazard Indicator with Push-to-Test 8 Isolated Power System Inspection and Testing Secondary Branch Circuit Breakers � 20A, 2 Pole 12 AM/FM, CD Stereo System 4c Power Lock Receptacle 13 Speaker for Stereo System 5c Single Receptacle, 20A, Hospital Grade 14 X-Ray Film Illuminator 6 Duplex Receptacle, 20A, Hospital Grade 15 Trim Lock 7 Ground Jack, 30A, Green c Available, but not shown in illustration. XRIAI Dimensions Hinged Door 12 Gauge Stainless Steel Front Trim Door Latch X-ray Receptacle 8. It is recommended that bolt-on breaker bus connections be checked for tightness no less then once every 12 months.0 305 (4) . If this connection is broken (for example, if an improperly connected adapter is used), the only path for current in the enclosure to go to ground is through the drill user. D Courtesy of Steven Engineering, Inc. Ground Detector. This chapter briefly covers the sections of codes and standards that apply to hospital isolated ungrounded distribution systems.8 of NFPA99 2012 addresses Wet Procedure Locations.4. BENDER offers more than 60 years of experience with ELECTRICAL SAFETY and the technology associated with "The Management of Line-to-Ground Faults" is power distribution systems.3.00 686 Transformer H1 H2 Low X1 X2 Voltage Primary Circuit Breaker Electrostatic Shield High Voltage Ground Bus (space for 25, 6-24 AWG including 1 lug for 1/0) L1 L2 L3 Ground RS-232 Test Meter LIM Common 12V Common 12V Hazard 12V Safe K1 Safe K1 Common K1 Hazard LIM Terminal Board Panel Is field expandable to 16 secondary branch breakers (QO or QOB) 3�10 kVA Low Profile Operating Room Panels Wiring Diagram and Dimensions Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Operating Room Panels 33 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved H1 H2 Low X1 X2 Voltage Primary Circuit Breaker Electrostatic Shield High Voltage Ground Bus (space for 25, 6-24 AWG including 1 lug for 1/0) L1 L2 L3 Ground RS-232 Test Meter LIM Common 12V Common 12V Hazard 12V Safe K1 Safe K1 Common K1 Hazard LIM Terminal Board 42. Infants are more susceptible to electric shock because of their smaller mass, and thus lower body resistance. The alarms indicate the condition of the LIM. It is safer to install a sufficient number of accessible receptacles than to use extension cords. Then close one secondary circuit breaker at a time, recording the hazard current reading for that circuit only.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Grounding 17 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved The following figure illustrates the current path for leakage current which could develop in an electrically operated patient bed.3.00 737 27.50 114 3.00 203 24.5 7. The cross-sectional area is usually expressed in units of AWG (American Wire Gauge). Enhanced features and improved functionality make this the most flexible LIM on the market today. When considering system size, we must include all wiring between the circuit breakers in the isolated panel and their receptacles. Line Isolation monitor testing and replacement services A committee must be formed, which meets for the sole purpose of medical equipment control. GROUNDED SYSTEM & BROKEN GROUND & GFCI The ground wire to appliances is very important as it is one of the primary defense systems to prevent electrical shock. Non-flammable anesthetizing location requirements are also covered in NFPA No. Iso-Gard LIM Courtesy of Steven Engineering, Inc. Line isolation monitors will be tested and all readings will be taken to make sure that they not only are working but working within the specifications of the code requirements from when they were installed.2 of NFPA99 2012 states "The monitor shall be designed such that a green signal lamp, conspicuously visible in the area where the line isolation monitor is utilized, remains lighted when the system is adequately isolated from ground; and an adjacent red signal lamp and an audible warning signal (remote if desired) shall be energized when the total hazard current (consisting of possible resistive or capacitive leakage currents) from either isolated conductor to ground reaches a threshold value of 5. This provides a running history for the permanently installed wired system. Following a rigid maintenance program can reduce electrical hazards significantly. Codes require an indicator alarm in each operating room. The isolating system covered in this manual is really an "isolated ungrounded electrical distribution system. Such as: 1. Imperfect Isolating In the previous examples, we assumed a perfect system. Keep in mind no perfect insulators exist either. NFPA appointed a committee to revise the 1944 standards. Many people feel they can safely touch either one of these conductors, but this oversimplification could result in a dangerous shock. System Capacity In selecting the capacity of an isolating transformer, remember that the patient care areas generally present an intermittent load condition and load diversity.0 686 7.00 102 Safe/Silence Hazard Stainless Steel Trim IA8CI Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc. The line isolation monitor continuously monitors the isolated power system's impedance from all conductors to ground. The elapsed time indicators can interface with a patient monitor, code blue alarm, or other equipment. Flush Catalog Number Surface Catalog Number 3H5S11CDDI 3H5S21CDDI 3H5S31CDDI 3H5S41CDDI 3 120 208 240 277 120 30A 20A 20A 15A 8-20A IC24440 53014BB 53018BB See note 2 5H5S11CDDI 5H5S21CDDI 5H5S31CDDI 5H5S41CDDI 5H5S51CDDI 5 120 208 240 277 480 120 60A 30A 30A 25A 15A 8-20A IC24440 53014BB 53018BB See note 2 7H5S11CDDI 7H5S21CDDI 7H5S31CDDI 7H5S41CDDI 7H5S51CDDI 7. The value of current divided into the system voltage determines the system impedance. BENDER isolated power system equipment are designed in strict compliance with UL 1047, UL 1022, and UL 50.50 165 . Record the hazard current reading for the LIM with only the primary circuit breaker closed. 99 History Published by the NFPA, this code is included as a reference in the NEC Article 517. Since the LIM is responding to total hazard current (THC), any energized remote will respond to an alarm.) for mounting the stainless steel trim. Even though not required by code, hospitals should consider revising these systems to match current standards.00 737 6.5 7. Control Panel (MCT4RC) Designed to operate with the MCT14B surgical chronometer. Shaded areas denote possible conduit entrance 30. When the circuit is energized, a green light on the remote indicator illuminates, telling operating room personnel that the circuit is energized and safe to use. If the impedance is less than that required by NFPA No.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 48 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Controlled Power Panels Controlled Power Panels Square D brand controlled power isolation power panels are designed to provide power for portable equipment outlets. Since the resistance through the human body is much higher than the resistance through a properly connected ground wire, most of the current follows the path of least resistance (the ground wire); the person holding the drill is safe. An optional surface mount backbox is available for remodeling applications. This would create the potential for current to flow from the opposite conductor to ground, as it would in any grounded electrical distribution system. Isolating systems are now commonly used for protection against electrical shock in many areas, among them: Line Isolation monitor testing and replacement services Intensive care units (ICUs) Line Isolation monitor testing and replacement services Coronary care units (CCUs) Line Isolation monitor testing and replacement services Emergency departments Line Isolation monitor testing and replacement services Special procedure rooms Line Isolation monitor testing and replacement services Cardiovascular laboratories Line Isolation monitor testing and replacement services Dialysis units Line Isolation monitor testing and replacement services Various wet locations Electrical Hazards In Hospitals The major contributors to hospital electrical accidents are faulty equipment and wiring.0 kVA (4) Number of 30A green ground jacks 1 Line Isolation monitor testing and replacement services Inspection and Testing one 2 Line Isolation monitor testing and replacement services Inspection and Testing two 3 Line Isolation monitor testing and replacement services Inspection and Testing three 4 Line Isolation monitor testing and replacement services Inspection and Testing four 5 Line Isolation monitor testing and replacement services Inspection and Testing five 6 Line Isolation monitor testing and replacement services Inspection and Testing six 0 Line Isolation monitor testing and replacement services Inspection and Testing none (5) Number of 120 V power receptacles 1 Line Isolation monitor testing and replacement services Inspection and Testing one 2 Line Isolation monitor testing and replacement services Inspection and Testing two 3 Line Isolation monitor testing and replacement services Inspection and Testing three 4 Line Isolation monitor testing and replacement services Inspection and Testing four 5 Line Isolation monitor testing and replacement services Inspection and Testing five 6 Line Isolation monitor testing and replacement services Inspection and Testing six 7 Line Isolation monitor testing and replacement services Inspection and Testing seven 8 Line Isolation monitor testing and replacement services Inspection and Testing eight 0 Line Isolation monitor testing and replacement services Inspection and Testing none (6) Type of 120 V power receptacles R Line Isolation monitor testing and replacement services Inspection and Testing 20A, red hospital-grade duplex (NEMA 5�20R) I Line Isolation monitor testing and replacement services Inspection and Testing 20A, ivory hospital-grade duplex (NEMA 5�20R) B Line Isolation monitor testing and replacement services Inspection and Testing 20A, black hospital-grade duplex (NEMA 5�20R) T Line Isolation monitor testing and replacement services Inspection and Testing 20A, brown hospital-grade duplex (NEMA 5�20R) L Line Isolation monitor testing and replacement services Inspection and Testing 20A, black hospital only, locking-type receptacle (Hubbell Line Isolation monitor testing and replacement services Inspection and Testing 23000HG or equivalent) 0 Line Isolation monitor testing and replacement services Inspection and Testing No 120 V receptacles (7) Configuration of 208 or 240 V receptacle Line Isolation monitor testing and replacement services Inspection and Testing 1 The circuit breaker matching the selected receptacle is installed at the factory in the 208 V or 240 V section of the panel's interior. No additional software is required. The unit contains a bus bar with 18 lugs for field connections and has a Type Line Isolation monitor testing and replacement services Inspection and Testing 304 brushed stainless steel cover plate.50 89 8. For detailed information on the Iso-Gard LIM, see page 62 of this bulletin, or request the Schneider Electric bulletin covering line isolation monitors. It also poses a potential problem in that someone could easily push a button to turn the power on in another room, thus turning off the power in a room that may actually be using a piece of equipment. Line Isolation monitor testing and replacement services Each system is capable of accepting up to 16 branch circuit breakers.43 392 3.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Electrical Maintenance 27 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 5. Disconnect the LIM from the circuit during this test.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Digital Clocks, Timers, and Accessories 65 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved Surgical Chronometer (MCT14B) Today's modern surgical techniques require the most up-to-date support equipment.1. The timepieces are designed for areas requiring rapid and precise time measurements.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 14 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Isolated Systems Line Isolation monitor testing and replacement services (LIM) Codes and standards not only specify the limits within which an isolated ungrounded system must operate, but also the method for checking system integrity.88 22 Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc.5 kVA panel is available with non-vented trim by using a 10 kVA transformer. It is mounted on a stainless steel trim plate, and includes an audible alarm. This is important to note since this could affect the overall installation of an isolated power system.156" Diameter Mounting Holes Face of Mounting Panel Terminal Board Receptacle 6. If a human is being harmed, there is a high likelihood that the current in the black wire ("hot") temporarily exceeds the current in the white wire ("cold"). Therefore, this handbook does not cover the flammable location in any detail. The different compounds used in the manufacturing of the insulation have changed or are subject to change, and the 3. These units must be replaced immediately, as it is a violation of code to use them. To perform this test, place a value of resistance between one line and ground to act as the fault impedance. General Information: A complete Isolated Power Panel is typically comprised of four assembly types : Interior, Hospital grade transformers, Backbox (enclosure ) and Front trim 5 Dual Voltage Isolated Power Panels BENDER's dual voltage isolated power panels provide two different output voltages simultaneously using one isolation transformer. The system provides for a remote indicator alarm at each circuit outlet. Because the household appliance does not open a fuse or trip a circuit breaker the appliance places resistance between the two conductors. Line Isolation monitor testing and replacement services NFPA-3M Line Isolation monitor testing and replacement services 56HM Line Isolation monitor testing and replacement services 56K Line Isolation monitor testing and replacement services 56B Line Isolation monitor testing and replacement services 76A Line Isolation monitor testing and replacement services 56C Line Isolation monitor testing and replacement services 76B Line Isolation monitor testing and replacement services 56D Line Isolation monitor testing and replacement services 76 Line Isolation monitor testing and replacement services 56G Courtesy of Steven Engineering, Inc. In an isolated system, neither of the 120 volts AC power wires available at the power outlets are connected to earth ground. NFPA-99 requires yearly testing of Isolated Power Panels. Sound ratings of 30 dB or less are guaranteed on units 5. Routine housekeeping procedures and incidental spillage of liquids do not define a wet location. Designed to fit virtually anywhere a single-gang wiring device can be mounted, the RA1WM is complete with SILENCE, HAZARD, and SAFE indicators, a push-to-test button, and an LED light bar for metering. The housing is connected to a third wire in the power cord, which in turn connects to ground. An isolated system can be unintentionally grounded. Line Isolation monitor testing and replacement services All branch circuits are located in one panel.00 179 1. The designation of all of the above-mentioned areas in the health care facility is the responsibility of the facility's governing body. stainless steel door Primary Circuit Breaker Shaded areas denote possible conduit entrance 40. The method to be used is a matter of personal choice.5 mA 1. The grounded system is excellent where unskilled operators or electrically unknowledgeable people come into contact with everyday equipment. UL 1022 Line isolation monitors are measured against this UL Standard. 53007BB is the standard Square D brand back box (4 in. In this deadly scenario, the current can be thought of as proceeding from the hot wire, to the case of the faulty device, to the patient, through the patient, out of the patient at the point where the patient is grounded, then through the grounded wiring (or even earth ground) back to the power source's white wire, which is also connected to ground.0 208 208 240 240 277 277 480 480 208/120 240/120 208/120 240/120 208/120 240/120 208/120 240/120 DVT122 DVT123 DVT132 DVT133 DVT142 DVT143 DVT152 DVT153 Primary Circuit Breaker Information Dual Voltage Panel Catalog Number Dual Voltage Transformer Catalog Number Primary Circuit Breaker Voltage Total kVA Current DVP2A5k DVP3A5k DVP4A5k DVP5A5k DVT522/DVT523 DVT532/DVT533 DVT542/DVT543 DVT552/DVT553 208 240 277 480 20 125 100 90 50 DVP2A7k DVP3A7k DVP4A7k DVP5A7k DVT722/DVT723 DVT732/DVT733 DVT742/DVT743 DVT752/DVT753 208 240 277 480 22. In the same year, the NEC incorporated the NFPA standards into the code. The team approach benefits all members of the hospital team, for example: Line Isolation monitor testing and replacement services The architect can make the proper provisions for mounting the equipment; this results in superior aesthetic quality. Conductive flooring is not required for rooms that are designed as nonflammable anesthetizing areas. First we calculate the total leakage current from L1 to L2 .00 76 Transformer Hinged Door with Lock and Key Power Lock Receptacles 14 Gauge 20A Hospital Use Only (8) Stainless Steel Ground Jacks 30A (6) 1. Volt. Line Isolation monitor testing and replacement services The necessary test equipment must be leased/purchased, and be kept on site. 99, grounding requirements still remain more demanding than those shown in Article 250 for other occupancies. Schneider Electric supplies a variety of interlocking type panels and schemes; do not hesitate to ask us for the special system your hospital requires. RETROFIT packages are available for a fraction of the cost of a new installation! Isolated Power Systems were first introduced into the hospital environment as a means of reducing the risk of explosions in operating rooms and any other area where flammable anesthetizing agents are used. These locations must meet class I division requirements and must have isolated power systems. It comes complete with SILENCE, HAZARD, and SAFE indicators, a PUSH-TO-TEST button, and an LED light bar for metering. The Isolated Power System does not have this low impedance connection. Line Isolation monitor testing and replacement services Critical Care Areas: special care units, intensive care units, coronary care units, angiography laboratories, cardiac catheterization laboratories, delivery rooms, operating rooms, and similar areas.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 32 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Operating Room Panels Operating Room Panels First introduced in the 1960s, this standard unit is most often used to supply 120 V service to the receptacles in an operating room. Back boxes for isolation panels and other modules can be shipped to the job site for "roughing-in" ahead of the interiors. The meter is calibrated in milliamperes (mA) of current. However, these codes and standards are continually changing and are also subject to local changes and interpretations. The MCT series of clocks/timers is designed for component mounting in various pieces of equipment such as modular walls, consoles, surgical facility panels, or building walls.00 305 5. Training: "Administrative authorities should ascertain that electric maintenance personnel are completely familiar with the function and proper operation of ungrounded electric circuits. 99 recommends the following formula be used to fault the LIM: R Line Isolation monitor testing and replacement services Inspection and Testing 200 X System Voltage For example, if a system measures 120 V, the fault impedance would be: R Line Isolation monitor testing and replacement services Inspection and Testing 200 X 120 Line Isolation monitor testing and replacement services Inspection and Testing 24 K ohms Ground Test 6. Please find the reasons to keep Isolated Power in all Operating Rooms: 1. The isolating transformer, circuit breakers, LIM, and control equipment are all mounted in an attractive flush-mounted enclosure. This limits the amount of equipment that can be connected to an isolated system, often requiring two systems in an operating room, rather than one. Planning and implementing a medical equipment control program should include the following factors: Line Isolation monitor testing and replacement services The hospital should obtain competent, objective biomedical engineering assistance when planning and developing the program.50 165 .0 10. Order circuit breaker catalog number QO220.377R Courtesy of Steven Engineering, Inc. Interior Trim Catalog Number Back Box Transformer Catalog Number Catalog Number kVA Primary Voltage Secondary Voltage Primary Circuit Breaker Secondary Circuit Breaker1 1 All panels contain 8-20/2 branch breakers and are field convertible to 16-20/2 branch circuit breakers. Retrieved Isolated Power System Inspection and Testing insert date of retrieval hereIsolated Power System Inspection and Testing , from University of Florida Department of Anesthesiology Virtual Anesthesia Machine Web site: Simulation: http://vam. In more technical terms, no hazardous potential to ground exists from either conductor of an isolated electrical system. Back boxes for the 120 Series are ordered separately.) Schematic representation of 1000 Ohm person in contact with live conductor I Line Isolation monitor testing and replacement services Inspection and Testing V Line Isolation monitor testing and replacement services Inspection and Testing 120 Line Isolation monitor testing and replacement services Inspection and Testing 120 mA R 1000 1. This very hazardous condition can cause an electrical hazard to the patient or medical staff. Hazard Current Leakage Contributed by Wiring Materials Used Result TW wire, metal conduit.. The National Electrical Code (NEC) of 1959 firmly established the need for ungrounded isolated distribution systems in areas where combustible gases are used.3. The size of the back box will depend on the outlet options for the overall device. A fairly modest current can cause ventricular fibrillation through the patient's skin, and a very small current indeed can do the same if the heart or tissues immediately adjacent to the heart, are connected in this manner.00 283 4.50 241 13. However, the amount of current that can flow must always be less than the current rating of the fuse or circuit breaker. Our representatives provide sales and service support on behalf of medical device manufacturers. X Line Isolation monitor testing and replacement services Inspection and Testing Hubbell Line Isolation monitor testing and replacement services Inspection and Testing IN16494 (equivalent to Hubbell Line Isolation monitor testing and replacement services Inspection and Testing 25603) A Line Isolation monitor testing and replacement services Inspection and Testing NEMA Line Isolation monitor testing and replacement services Inspection and Testing 6-15R B Line Isolation monitor testing and replacement services Inspection and Testing NEMA Line Isolation monitor testing and replacement services Inspection and Testing 6-20R C Line Isolation monitor testing and replacement services Inspection and Testing NEMA Line Isolation monitor testing and replacement services Inspection and Testing 6-30R D Line Isolation monitor testing and replacement services Inspection and Testing NEMA Line Isolation monitor testing and replacement services Inspection and Testing 6-50R E Line Isolation monitor testing and replacement services Inspection and Testing NEMA Line Isolation monitor testing and replacement services Inspection and Testing L6-15R F Line Isolation monitor testing and replacement services Inspection and Testing NEMA Line Isolation monitor testing and replacement services Inspection and Testing L6-20R G Line Isolation monitor testing and replacement services Inspection and Testing NEMA Line Isolation monitor testing and replacement services Inspection and Testing L6-30R 0 Line Isolation monitor testing and replacement services Inspection and Testing No 208 V or 240 V receptacle Courtesy of Steven Engineering, Inc. Little traffic occurs between the support team and the anesthetist. This reduces any confusion caused by an alarm going off in the operating room from circuits that don't need to be energized. Procedures for electrical safety should include the following: Line Isolation monitor testing and replacement services Check all wall power receptacles and their polarities regularly.44 113 3.00 152 Shaded areas denote possible conduit entrance Dual Dimensions: Inches mm Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc. 3.5 120 120 80A 8 (20A) OR32730 53048BB 53052BB 7/7XR11 7/7H5S21DDI 208 45A 7/7XR21 7/7H5S31DDI 240 40A 7/7XR31 7/7H5S41DDI 277 35A 7/7XR41 7/7H5S51DDI 480 20A 7/7XR51 q Panels are field expandable to 16 branch circuit breakers. The MK2430-11 features 12 digital inputs allowing messages from other technical equipment to be recorded and displayed.4 of NFPA99 2012 states "The LIM circuit shall be tested at intervals of not more than 1 month by actuating the LIM test switch. This unit has three elapsed-time indicators and one clock integrated into a single, compact enclosure. System Wiring and Conduit The selection of a proper conductor is one of the most important design criteria of an isolated power system. The size of the back box will depend on the outlet options for the overall device. Controls for both displays are on the face of the unit.00 1524 60. Only the definition of "wet location" is present to recommend that IPS is the better solution� and then only as far as continuity of supply is concerned. Check the associated alarms and silence functions.2. Leakage and capacity determine the number of circuits energized at one time allowing the panel to operate safely. Line Isolation monitor testing and replacement services Other-than-hazardous locations, allowing the use of grounded power systems., though a human) is detected.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 58 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Power/Ground Modules Master Grounding Station Module Isolated Power System Inspection and Testing 120 Series This unit can be used as a collection point for grounds in a large area such as a coronary care or intensive care ward.2 of NFPA99 2012 Isolated Power System (Where Installed) states "A permanent record shall be kept of the results of each of the tests. The hazardous levels of current for many patients are amazingly smaller.00 1016 35.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 26 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Electrical Maintenance Electrical Maintenance A periodic maintenance program is essential to the safety of hospital patients and personnel. However, the displays are not visible during this time interval. NFPA No. Additionally, the code states that the unloaded system, with the LIM disconnected, must have a minimum line-to-ground impedance of 200,000 ?. The "MUTE" button is used to silence the remote audible alarm. Interlocking Methods There have been several different methods of controlling the interlocking system for equipment receptacles.00 889 24. In placing resistance, the appliance limits the amount of current that can flow. This panel is ideally suited as a power supply to power/ground modules and X-ray indicator/receptacle modules, also manufactured by Schneider Electric. Line Isolation monitor testing and replacement services Use electrically insulated tools. Other NFPA standards are also referenced in Article 517, such as NFPA-101 and NFPA-20. However, grounded power systems are a potential killer should a grounded person come into contact with a line conductor. The line isolation monitor determines the degree of isolation between the two power wires and the ground and predicts how much current could flow if a second short-circuit were to develop. Each system has its own set of equipment: Line Isolation monitor testing and replacement services Primary circuit breaker Line Isolation monitor testing and replacement services Square D brand isolation transformer Line Isolation monitor testing and replacement services Reference ground bus bar Line Isolation monitor testing and replacement services Iso-Gard LIM Line Isolation monitor testing and replacement services Load center The compact duplex design minimizes the width of the panel, which uses less horizontal wall space than two conventional isolation panels mounted side by side. We perform the annual inspection of your isolated power systems, verify the operation/calibration of your line isolation monitors, and provide the necessary documentation to satisfy The Joint Commission and NFPA 99 requirements. The alarm must activate when the integrity of an isolated ungrounded system degrades to the extent that 5 mA of current will flow from either secondary conductor to ground through a zero impedance fault. C1 in parallel with 1000 Ohms Line Isolation monitor testing and replacement services Inspection and Testing 1. At the same time during such an occurrence, the Line Isolation monitor testing and replacement services would clearly alarm as to the fault condition so that action may be taken. NFPA-99 prohibits the use of extension cords and multiple outlet devices in operating rooms except under certain conditions. Line Isolation monitor testing and replacement services Ground bus bar with 25 terminals. Included remote indicators may feature a built-in test button and a transformer overload Isolated Power System Inspection and Testing LED. 5 Line Isolation monitor testing and replacement services Inspection and Testing 5. Conduct these tests before patient occupation. Isolated Power System Inspection and Testing Power Ground Module Courtesy of Steven Engineering, Inc.2. 8.7, page 25) Line Isolation monitor testing and replacement services Line Isolation monitor testing and replacement services What the Line Isolation System Does Line isolation systems (isolation transformer + line isolation monitor) protect persons from electrocution by turning a normal "grounded system" (that exists outside the operating room) which only needs a single fault to cause electrocution into a "protected" system in which two faults are needed to deliver a shock. The XHHW and XHHW-2 insulation is still the choice since it comes closest to meeting the recommendation. Unfortunately, a perfect system is impossible to attain. Line Isolation monitor testing and replacement services Surface mount backbox. For example, during cardiac catheterization, small amounts of current could cause ventricular fibrillation. Modules are provided on either stainless steel wall plates (compatible with standard contractor supplied electrical gang boxes as shown on the right) or stainless steel cover plates for use with ROHS compliant galvanized steel backboxes. 99 addresses fire, explosion, and electrical safety in hospitals. Attendant contacting bed to pacemaker catheter terminals EKG Monitor Possible Broken Ground Path of Leakage Current Courtesy of Steven Engineering, Inc. We will first consider the situation of the pure IPS, without externally connected equipment (externally connected equipment only increases the system net capacitance and leakage resistance). In any case, the result would be the same.edu/simulations/ores. Interior Trim Catalog Number Back Box Transformer Catalog Number Catalog Number kVA Primary Voltage Secondary Voltage Primary Circuit Breaker Secondary Circuit Breaker1 1 All Panels contain 8-20/2 branch breakers and are field convertible to 16-20/2 branch breakers. Mtg. Courtesy of Steven Engineering, Inc. The shield's attenuating characteristics prevent most of the signal from feeding into the distribution system and through it into other treatment or monitoring equipment. The services of a factory technician are available from Schneider Electric. Manufacturers BiomedRx provides an outsourced solution for medical equipment manufacturers seeking to expand their sales and service territories.00 914 Left Side Right Side 22. The average adult exhibits a resistance between 100,000 ohms (?) and 1,000,000 ?, measured hand to hand.17 157 7.00 508 12. The cost of a single ground jack, or even several ground jacks, in a room is quite low. If we compare the same occurrence on a grounded system, and use as an example, a line-to-ground fault, then we are back to our colorful situation as described in Section 2. XR29420 53015BB 53019BB 25XR22 25H5S23DDIC 208 240 125A 25XR23 25H5S32DDIC 240 208 125A 25XR32 25H5S33DDIC 240 240 125A 25XR33 25H5S42DDIC 277 208 125A 25XR42 25H5S43DDIC 277 240 125A 25XR43 25H5S52DDIC 480 208 65A 25XR52 25H5S53DDIC 480 240 65A 25XR53 Wiring Diagram and Dimensions Electrostatic Shield Main Circuit Breaker Low Voltage High Voltage LIM Terminal Board Transformer Line Isolation monitor testing and replacement services Circuit Breaker Panel Note: Interlocking circuit shown to indicate only one of four circuits working at any time.00 178 22. The conclusion to be drawn is the isolating transformer provides the same usable electrical energy as the grounded power circuit. It is not the amount of voltage a person is exposed to, but rather the amount of current transmitted through the person's body that determines the intensity of a shock.3.00 813 30.5 Isolated Power System Inspection and Testing Isolated Power System Inspection and Testing Isolated Power System Inspection and Testing Backbox to be used with MCT95135 53007BB Isolated Power System Inspection and Testing Isolated Power System Inspection and Testing 8 12 4 Remote control unit (optional) MCTCT 4. The second ingredient has been discussed but bears repeating: there must be good communication between the parties planning the system for the hospital. However, it is unlikely that any of the other systems is as widely used, yet as poorly understood, as the system discussed in this catalog. Using the example as above, but with the black wire, the connections cause different results. This can be an inconvenience since this type of control system requires someone to select which room will be turned on.2.00 102 12. Many hospitals feel it necessary to monitor each operating room at a central location. The variety of Square D brand modular system components gives the electrical consulting engineer and architect great design latitude. BENDER Isolated Power System Equipment Isolated Power System with Line Isolation monitor testing and replacement services for hospitals and other critical care areas LIM2010 Line Isolation monitor testing and replacement services Line Isolation monitor testing and replacement services No interference with electrical equipment Line Isolation monitor testing and replacement services Digital display showing THC in real-time Line Isolation monitor testing and replacement services Automatic self-calibration and self-check Line Isolation monitor testing and replacement services Audible and visual alarm indicators Line Isolation monitor testing and replacement services Many optional alarms, including load monitoring, over- and undervoltage, temperature monitoring, and more Line Isolation monitor testing and replacement services RS-485 communication interface Line Isolation monitor testing and replacement services Compatible with BENDER's advanced communication bus with several distribution options, including web-based viewing Line Isolation monitor testing and replacement services Compatible with BENDER's ground fault location system (EDS) Ground Fault Location Module The EDS491/EDS461 series of ground fault location modules, combined with the LIM2010, create an installed ground fault location system for ungrounded AC and DC systems. The Iso-Gard LIM exhibits a 50 ?A monitor hazard current and an alarm band width of zero enabling the unit to sound an alarm at 5.2.00 178 42. It does not generate any interference that could affect patient monitoring devices.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Power/Ground Modules 57 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Power/Ground Modules Isolated Power System Inspection and Testing 50 Series (To Fit Gang Boxes These modules contain both ground jack receptacles and power lock receptacles, but do not contain a ground bar with lugs. ISOLATED SYSTEM & BROKEN GROUND The ground wire to appliances is very important as it is one of the primary defense systems to prevent electrical shock. Section 6.2 of NFPA99 2012 Line Isolation monitor testing and replacement services Tests states "The line isolation monitor (LIM) circuit shall be tested after installation, and prior to being placed in service, by successively grounding each line of the energized distribution system through a resistor whose value is 200 x V (ohms), where V equals measured line voltage.00 610 10. Today, these loads vary from 20 to 60 A and multiple pieces of equipment are being used. Use these panels for three-phase loads only; they cannot be used to supply power to 120 V single-phase loads.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 20 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Design Guide The isolated power requirement of the operating room is almost always under 5 kVA. Isolation Power System, small local network comprising an isolation transformer, a line isolation monitor, and its Branch circuits designed for Surgical Applications, Systems intended for Life Support, and applications dedicated to Medical Electrical Equipment.00 203 8. The increased use of electronic diagnostic and treatment equipment, and the corresponding increase in electrical hazards, has resulted in the use of isolated ungrounded systems in new areas of the hospital since 1971.00 102 4.3. Ensure the alarm will silence when the silence button is pressed. Reduced Shock Hazard 2.75 95 Stainless Steel Cover Plate Ground Jack - 30A Twist-To-Lock Note: 8-gang back box not supplied. Each operating room was required to have a minimum of six ground jacks. Home / Simulation Portfolio Last Updated 12/11/13 Electrical Power and Safety in the Operating Room To reference this educational web simulation according to the APA style for Web references, use: Gibby GL, Lizdas DE, Lampotang S. Line Isolation monitor testing and replacement servicess from PG LIFELINK continuously monitor the Isolated Power System in the operating room and detects any faults immediately.0 5.00 127 5. The potential difference measured between these two points should not exceed 2 V. For a LIM circuit with automated self-test and self-calibration capabilities, this test shall be performed at intervals of not more than 12 months.�c 2 � � 60 � 1.00 762 74. In most cases, an operating room panel with eight or ten secondary breakers is sufficient. The type of controls applied depends on the need. 56A� Standard for the Use of Inhalation Anesthetics, received major revisions in 1970, 1971, 1973, and 1978. 4. by 12 in. If an optional power ground module is used, two circuits should be used. XR29420 53015BB 53019BB 15XR22 15H5S23DDCI 208 240 90A 15XR23 15H5S32DDCI 240 208 90A 15XR32 15H5S33DDCI 240 240 90A 15XR33 15H5S42DDCI 277 208 90A 15XR42 15H5S43DDCI 277 240 90A 15XR43 15H5S52DDCI 480 208 40A 15XR52 15H5S53DDCI 480 240 40A 15XR53 25H5S22DDCI 25 208 208 125A 8�20, 30 or 60 A Secondary Circuit Breaker or a combination thereof.50 241 Top View of Ground Bus Stainless Steel Cover Trim 18 Lugs for Line Isolation monitor testing and replacement services Inspection and Testing 6-Line Isolation monitor testing and replacement services Inspection and Testing 14 AWG 1 Terminal Block for Line Isolation monitor testing and replacement services Inspection and Testing 0-Line Isolation monitor testing and replacement services Inspection and Testing 12 AWG GS1200I Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 54 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Remote Alarm Indicators Remote Alarm Indicators Panel-Mounted Indicators Panel-mounted indicator alarms are designed for use with Square D brand isolated power panels. The wire that is connected to this ground connection is supposed to be colored "white" and is call "cold" because if all is done correctly, you can stand on wet ground and touch this wire and not get shocked -- because it also is connected to the earth. The size of the isolation transformer should be limited to 10 kVA or less. This also gives the control of the receptacle to the room. Courtesy of Steven Engineering, Inc. Demand that any appliance purchased for use in patient care areas be labeled under this UL Standard for use in the specific area designated.00 1067 44.562 Dia. They are furnished with stainless steel trim plates.437 Diameter Mounting Holes 11 21. Up to 12 separate current transformers may be connected to the device. NOTE: Hospital operating rooms have been classified as Critical Care Areas since the 1993 issue of the NEC. This is the first step toward having a working system, but it is only one of four ingredients that make up a superior system. This type of electrical system is commonly called a "grounded electrical distribution system. Several points should be considered: 1.2. Adult patients with cardiac arrhythmias can be electrocuted through the misuse of pacemakers connected directly to the myocardium. If there is good contact between the live conductor and grounded enclosure, sufficient current will flow to disengage the circuit breaker or blow the fuse. See accessories for more information. Because the broken ground wire does not necessarily provide a leakage path from one of the 2 power wires to ground, the Line Isolation monitor testing and replacement services will not detect this problem. Devices with broken or damaged ground wires should be taken out of service and repaired.3. This note referred to the recommendation found in the NEC (517-160) concerning the 3.43 392 3.00 762 12. (2013): Electrical Power and Safety in the Operating Room. The first dynamic ground detectors, now called line isolation monitors, were developed in Canada. This requires a second fault or electric failure to be present in the system before a true hazardous condition exists. Courtesy of Steven Engineering, Inc. The interiors, trims, and transformers can be shipped later. Occasionally, difficulty occurs in circuits feeding portable equipment since these conductors are somewhat larger.50 89 15.0 kVA and below, and 35 dB for units 7. 56A was incorporated into a new standard, NFPA No. You can learn more about hospital isolated power distribution systems on a .2.00 1295 12. The type EDD LIM still uses a switching circuit and still causes interference with patient monitoring equipment. This large panel condenses many of the electrical accessories normally found in an operating room into one unit. In order for harm to occur, electrical current must pass through the patient (or other human) in a complete circuit from one of the two conductors from the power company, to the other. RA1PM The RA1 is the newest addition to the remote alarm indicators series. Line Isolation monitor testing and replacement services Wet Locations: patient care areas normally subject to wet conditions while patients are present. Wire pulling compound with ground conductor. No branch circuit should be longer than 150 ft.0 10.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Digital Clocks, Timers, and Accessories 63 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved Digital Clocks, Timers, and Accessories MCT Series Schneider Electric offers a line of digital clocks and elapsed time indicators uniquely adaptable to the hospital environment. above finished floor.1 ?.2.2 of NFPA99 2012 addresses Record Keeping. To perform this test, attach probes between metal surfaces and the room ground bus; verify the ground connection. At the same time the equipment, doctor or nurses may be standing in prepping solution, blood, urine and other conductive fluids that greatly reduce resistance to passage of unintended electrical current. NOTE: When ordering the 8CIIAI, modify the x-ray panel interior number by changing the second 'D' to 'N'. Also, manufacturers have sometimes discontinued production of wire types that we have recommended. This is usually restricted to the location of the overhead operating room light. The connection to ground from the pin on the receptacle is often made by a third wire run with the power conductors, or by a metal pipe (conduit) which encloses the two conductors serving the receptacle.00 1448 Shaded Areas Denote Possible Conduit Entrances Piano Hinge (Full Length of Door) Stainless Steel Cover . The level of current would be high enough to be deadly. Correct the problem as soon as possible; but do not interrupt procedures being conducted when the alarm sounds. When electrical devices are connected across two conductors on the transformer, they work as if they were connected directly to a grounded system. Push button control can be substituted for the switch in the receptacle module. The hope is that this will occur prior to the onset of ventricular fibrillation in the victim or other damage.0 305 (4) . Using the isolated system, an initial line to ground fault can be kept as low as 5 mA, if the system is operating in the "safe" condition. NOTE: On a correctly installed system there will be a very small leakage resistance in parallel with the system net capacitance, but this value, being so low, may be neglected for the purpose of this example. (The RA1 remote is also acceptable for this purpose. The component system, on the other hand, invariably results in duplication of functions, high jobsite labor costs, excessive system leakages, and the lack of a dependable single vendor. These modules can be used where additional ground jack receptacles and power lock receptacles are needed, but where lugs for hard grounding of non-electrical items are not required.3. Person Line Isolation monitor testing and replacement services Inspection and Testing Voltage across our 1000 Ohm person I. Reviewing them not only helps determine requirements for a system, but helps identify the equipment currently used in the hospital. Although extension cords offer flexibility, they are often abused. Determine the line-to-ground impedance between each of the power conductors and ground. Later, the hospital receives a letter containing the test results. They are compact, solid state, and easily readable from 30 ft away.50 343 4. The LIM2010 may be configured for additional alarms, including transformer overload and overtemperature, overvoltage and undervoltage, and more.00 330 12. Authorities determined the major causes of these accidents fell into two categories: Line Isolation monitor testing and replacement services Man-made electricity Line Isolation monitor testing and replacement services Static electricity (75Line Isolation monitor testing and replacement services Inspection and Testing of recorded incidents) In 1939, experts began studying these conditions in an attempt to produce a safety standard. 16. Conduct this test at any of the receptacles; be sure all the secondary breakers are in the "on" position. The white conductor (known as the neutral) is grounded when it is installed by the utility company. Both the MCT4RC and the MCTCT control units include a 15-foot wiring harness for connection to the clock/timer.00 102 17. The highest risk is to patients undergoing surgery within the thoracic cavity. Multiple LIM2010 devices may also be controlled by a single, intellgent remote station. This is the only way to avoid purchasing unnecessary equipment. ICU and CCU areas where the patient may be connected to several pieces of equipment �all which contain their respective leakages, both resistive and capacitive, greatly add to the possibility of hazardous leakage currents flowing.3.89 of NFPA99 2012 defines an Isolated Power System as "A system comprising an isolation transformer or its equivalent, a line isolation monitor, and its ungrounded circuit conductors. More important, no room air circulates through the transformer compartment, removing the danger of bacteria growth in the warm compartment. MCTCT Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc. Many types of data storage and monitoring equipment may be extremely sensitive to line transients and line noise which is frequently present on voltage feeders. One half of the panel can be used to supply critical system power, while the other half supplies normal system power. However, when just the ground wire is broken and NO OTHER FAULTS are present, no harm occurs. Line Isolation monitor testing and replacement servicess from PG LIFELINK continuously monitor the Isolated Power System in the operating room and detects any faults immediately. When the black wire touches the kitchen plumbing, there is a violent arc, much as if both conductors had touched each other. This can be important when maintenance electricians are searching for a tripped circuit breaker in an emergency. Hopefully, this section will help them fill this communication gap. In order for a piece of equipment to take advantage of this safety mechanism, it must be connected to the primary wiring system (which is grounded) via an isolation transformer (for a schematic diagram, see Morgan and Mikhail Figure 2. The above testing procedures are based on those required for isolated power systems in NFPA-99. Ground Cord Assemblies Schneider Electric offers various types of ground cord assemblies.001 ohms/foot. The basic control scheme is the mechanical interlock panel.00 305 36. The available grounded electrical power energizes a coil in the isolating transformer; this coil is called the primary winding. Whatever the correct level, between 10 and 180 ?A, it is still only a fraction of the level hazardous to medical attendants serving the patient.25 57 2. What the Alarm Means When the monitor is alarming, there is a single fault in the system, but there still needs to be another one in order to deliver a shock. A single lug for Line Isolation monitor testing and replacement services Inspection and Testing 2 through Line Isolation monitor testing and replacement services Inspection and Testing 14 AWG wire is included for the incoming ground. Typical Surgical Facility Panel Courtesy of Steven Engineering, Inc. The LIM also performs an automatic ground fault test on any cord-connected appliance that is plugged into one of the Isolated Power receptacles.9V 1201000 Current passing through our 1000 Ohm person would be: 120V Line Isolation monitor testing and replacement services Inspection and Testing 100 Microamps 1201000 Let's compare the grounded system vs. Line Isolation monitor testing and replacement services Ability to divide branch circuits between two isolation panels and still meet leakage current limits for branch circuit wiring as required in NFPA 99. The newer and more popular control scheme is the PLC controlled panel. ORICA The ORICA model is complete with green, yellow, and red indicating lights. It powers the "memory mode," which prevents loss of time information on the digital clocks during a power interruption. Under some types of ground faults, 120 V equipment can be subjected to higher than anticipated line-to-ground voltages. UPDATE your Isolated Power Panels with NEW TECHNOLOGY! Improve your Operating Room performance with the NEW Mark V LIM from PG LIFELINK. Courtesy of Steven Engineering, Inc.00 152 6. When a light bulb touches both wires, it illuminates. Continuity of Power 3.50 89 15.00 508 20. Consulting engineers and plant operating engineers who specify and apply these isolating systems usually understand them; but they have difficulty passing this knowledge to laymen.3. In a balanced system as shown, we can expect to measure 60 Volts from each line to ground." Section 6.3.1V (with 50 microamp leakage) I. The Square D brand, type EDD line isolation monitor is typical of the second generation of LIMs. The cord is crimped to both the conductor and the insulation, providing maximum strain relief. If improper conductor insulation is chosen, the result is the same as if the capacitive leakage is raised. ZT1590RS (left) & MK1550 (right) ZT1591 ZT1594 8 Isolated Power Systems Equipment and Accessories GPM Series-Power and Ground Modules BENDER power and ground modules provide a combination of hospital grade power receptacles and/or hospital grade ground jacks. All remote indicators include a green "SAFE" LED, a red "HAZARD" LED, and a "MUTE" button with an integral amber LED. Surgical facility centers typically include, but are not limited to: Line Isolation monitor testing and replacement services Surgical clock/timer Line Isolation monitor testing and replacement services Receptacle and/or ground jacks Line Isolation monitor testing and replacement services Film illiminators or Dry Erase Boards Line Isolation monitor testing and replacement services Audio system with speakers 6 MK2000 Series LIM Remote Indicator MK Series remote indicators are designed for use with the BENDER LIM2010 Line Isolation monitor testing and replacement services. Now let's use the same kitchen receptacle to show a comparison between a grounded system and an isolated system. See the "Codes and Standards" page 7 of this manual for additional information. The hinged access door to the dead front circuit breaker and the LIM compartment has a lock to prevent unauthorized entry. These cords may lie in traffic areas where people step on them and roll equipment over them.00 279 13. The panel is located behind the support team, near the head of the operating room table.2 No. With this monitoring, there must be some warning when the system becomes grounded. 99. Older LIMs ISO-GARD LIM from SQUARE D � 0 5.8. The IPS is a system in which the transformer neutralground connection has been deliberately omitted. Verify the LIM is operating. Line Isolation monitor testing and replacement services As part of the team, the hospital administrator can make informed decisions when ordering equipment for the operating room, specifying maximum leakages, and correct cords and connectors.00 305 5. You can think of it as a "leakage" current, even though it is a virtual leakage current; it may or may not exist.5 or less, as recommended by the NEC and NFPA No. Isolated systems are now commonly used to protect against electrical shock in many areas, among them: Line Isolation monitor testing and replacement services Intensive care units (ICUs) Line Isolation monitor testing and replacement services Coronary care units (CCUs) Line Isolation monitor testing and replacement services Emergency departments Line Isolation monitor testing and replacement services Special procedure rooms Line Isolation monitor testing and replacement services Cardiovascular laboratories Line Isolation monitor testing and replacement services Dialysis units Line Isolation monitor testing and replacement services Various wet locations Without proper use of grounding, leakage currents could reach values of 1,000 ?A before the problem is perceived. However, ungrounded wiring and grounded service wiring cannot occupy the same conduit or raceway. It has a high impedance capacitive/resistive return path. Since quiet operation is important in hospital applications, Schneider Electric followed rigid design criteria to provide a virtually inaudible transformer core and coil unit. Section 3. The Iso-Gard LIM is component recognized by UL under UL1022 Standards for Line Isolation monitor testing and replacement servicess. The staff uses the book to record maintenance and periodic test data. Although the shield makes the electrical design of the coil more difficult, these two features make it desirable: 1. To comply with National Fire Protection Association (NFPA) 99 requirements for the maximum hazard current contributed by the branch circuit conductors (impedance of isolated wiring) on isolated power systems, the number of branch circuit breakers should be limited to four. Many manufacturers of voltage-sensitive equipment have recognized the problem created by transients and noise on their equipment's input line and have provided a measure of protection as an integral part of their equipment. This panel would contain the secondary breakers needed and use either the receptacle module switch or push button control. The following figure illustrates these hazards.5 208 208 240 240 277 277 480 480 208/120 240/120 208/120 240/120 208/120 240/120 208/120 240/120 DVT722 DVT723 DVT732 DVT733 DVT742 DVT743 DVT752 DVT753 10. The technician provides orientation to the system, and its maintenance and testing. holes 38 14 (2 Top, 2 Bottom for mounting) Shaded areas denote possible conduit entrance Ground Bus (space for 25, 6-24 AWG including 1 lug for 1/0) Panel Is field expandable to 16 secondary branch breakers (QO220) Low Voltage Primary Circuit Breaker Electrostatic Shield High Voltage LIM Terminal Board Optional Accessories Circuit Breaker Panel Line Isolation monitor testing and replacement services Wiring Diagrams and Dimensions 3 kVA and 5 kVA ICU/CCU Panels 7.00 686 12. The unit is completely factory wired; only field power connections and ground connections are necessary. Section 6.00 305 12. It is also important to specify wire with a dielectric constant of 3.00 787 8. Proper grounding dissipates static charges and shunts fault currents and normal leakage currents away from attendants. Increased use of such equipment as heart monitors, dye injectors, and cardiac catheters increases the threat of electrocution when used within the circulatory system. The LIM2010 is a full-featured device which includes a seven-segment display, digital display, and easy-to-read LED bar graph, connection monitoring, and compatibility with BENDER's ground fault location system and communication network. Typically, the 208 or 240 V circuits of the dual output voltage panel supply power to operating room equipment such as mobile X-ray machines or surgical lasers. III. BiomedRx can train your current maintenance staff on any manufacturer's isolated power systems. Line Isolation monitor testing and replacement services Totally enclosed, non-ventilated, flush enclosure with stainless steel trim. H1 H2 Low X1 X2 Voltage Primary Circuit Breaker Electrostatic Shield High Voltage Ground Bus (Space for 25, 6-24 AWG, including 1 lug for 1/0.00 635 29. Ground fault location capabilities are also available, providing notification of the source of the fault in a timely fashion.00 533 7. Catalog Numbers Interior Trim Catalog Number Backbox Transformer Catalog Number Catalog Number Primary kVA Primary Voltage Secondary Voltage Primary Circuit Breaker Secondary Circuit Breaker Flush Catalog Number Surface Catalog Number 3H5ST22DDI 3 208 208 15A (1) 15A ORT32420 53042BB 53050BB 3XRT22 3H5ST52DDI 480 6A 3XRT52 6H5ST22DDI 6 208 208 20A (1) 15A ORT32420 53043BB 53051BB 6XRT22 6H5ST52DDI 480 10A 6XRT52 9H5ST22DDI 9 208 208 35A (1) 30A ORT32420 53043BB 53051BB 9XRT22 9H5ST52DDI 480 15A 9XRT52 15H5ST22DDI 15 208 208 60A (1) 60A ORT42600 53045BB 53046BB 15XRT22 15H5ST52DDI 480 25A 15XRT52 25H5ST22DDI 25 208 208 90A (1) 60A ORT42600 53045BB 53046BB 25XRT22 25H5ST52DDI 480 40A 25XRT52 Wiring Diagram X0 X3 X1 X2 Line Isolation Montior Terminal Board L1 L2 L3 Ground RS-232 Test Meter LIM Common 12V Common 12V Hazard 12V Safe K1 Safe K1 Common K1 Hazard Ground Bus (space for 25, 6-24 AWG, including 1 lug for 1/0) Electrostatic Shield Primary Circuit Protection 1 2 Remote Indicator Alarm 3 Courtesy of Steven Engineering, Inc. The LIM2010 has an automatic self-calibration and self-check feature.9. Explosive anesthesia is now virtually non-existent in the United States. The governing body of the hospital determines whether a location is to be considered "wet. The services of a factory technician are available from Schneider Electric. Patient Care Areas Article 517 defines three types of patient care areas: Line Isolation monitor testing and replacement services General Care Areas: patient bedrooms, examining rooms, treatment rooms, clinics, and similar areas.00 305 Dual Dimensions: Inches mm Wiring Diagrams and Dimensions H1 H2 Low X1 X2 Voltage Electrostatic Shield High Voltage Ground Bus (Space for 25, 6-24 AWG, including 1 lug for 1/0. deep (minimum) outlet box, this remote has SAFE/SILENCE and HAZARD indicators. If, on the other hand, the drill is powered from an isolated circuit, and the ground from the drill enclosure is disconnected, there is little potential for current to flow through the drill user. There is no certain way to prevent these faults; however, their magnitudes can be kept to a minimum through the use of an isolated power system. However, if the ground wire is broken, most of the current would flow through the patient. In this way, it overcomes the greatest inadequacy of static ground detectors Isolated Power System Inspection and Testing the inability to recognize and sound an alarm at the occurrence of an excessive balanced fault condition.00 102 3. However, the other wire, supposed to be "black" in color and known as the "Hot" wire -- different story. The panel can be applied to both critical systems and normal system power. Some OR teams prefer to place the control panel within reach of the anesthetist. Duplex or single receptacles are available on request.89 above. Isolated Power Systems � Explanation Conventional grounded system with a typical 1000 Ohm person Diagram 2 A current of 120 mA would flow from the line conductor� via the 1000 Ohm person�and return to the neutral via the very low impedance neutral-ground connection. The MK2430/MK800 displays information regarding each individual device, system, or room and can define custom labels based on each individual application. This slim design is of particular benefit when the isolation panel is mounted in an operating room where wall space is limited. Other stations wired similarly. This device was designed with the user in mind. Thus the current flow through the human involves connection to the black wire only -- and back to the power system via the house grounding connection back at the service entrance. Section 6. This lack of information led to such errors as incorrect voltage for portable X-ray machines, insufficient receptacles, and insufficient capacity in isolating systems. With this selection of capabilities, the Iso-Gard LIM can meet the requirement of any application.00 283 12. This third point of contact simply connects the metal case of the drill to ground.50 38 33. panel eventually evolved into medical headwalls with isolated power.4. Though not an NFPA code requirement, the shield is highly recommended by leading engineers. Section 6.3.16 106 6. Additional circuits should be added with caution, as this will increase the leakage.00 559 8. This unit has unique power backup systems that requires no battery so there is no need for battery monitoring and replacement.0 kVA 7 Line Isolation monitor testing and replacement services Inspection and Testing 7.0 1016 42. The equipment should be spread out through the system to avoid unnecessary alarms. Line Isolation monitor testing and replacement services Use completely sealed and insulated remote controls for use in patient beds.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Surgical Facility Panels 29 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved Surgical Facility Panels (SFP) The surgical facility panel offers another method of providing isolated power in an operating room. When designing the system, use it in conjunction with NFPA No.5 kVA transformer. 4. A count may be interrupted, resumed and reset at the remote control MK1550. Line Isolation monitor testing and replacement services Each panel includes two Iso-Gard Series D microprocessor-controlled line isolation monitors. 99 and the NEC.2 � 106 � 1000 Line Isolation monitor testing and replacement services Inspection and Testing 999 Ohms 1201000 We may round this number to 1000 Ohms, showing that the impedance of our person has in fact completely shunted the C1 capacitance. The code no longer allows wire pulling compound to be used in conduits for isolated power systems. Time spent planning the changes will result in large dividends, provided the following parties are involved: Line Isolation monitor testing and replacement services Consulting engineer Line Isolation monitor testing and replacement services Hospital administrator Line Isolation monitor testing and replacement services Hospital engineer Line Isolation monitor testing and replacement services Chief of surgery Line Isolation monitor testing and replacement services Chief of anesthesiology Line Isolation monitor testing and replacement services Cardiologist Line Isolation monitor testing and replacement services Manufacturer's representative History During the 1920s and '30s, the number of fires and explosions in operating rooms grew at an alarming rate. Failure to follow this instruction will result in death or serious injury.00 305 9.21 � 10-9 Farads p Isolated Power Systems � Explanation 1000 Ohm person in contact with one line conductor and ground Diagram 6 We can now calculate the voltage that will be present across our 1000 Ohm person. Technical personnel may be notified immediately of an alarm condition with remote communication capabilities. The BENDER ZT1591 operates independent of line frequency. If you accidentally touch this wire (never do this!) while it is powered, you have a significant likelihood of dying. Avoid the use of wire pulling compound since it increases the capacitive coupling. X Line Isolation monitor testing and replacement services Inspection and Testing Hubbell Line Isolation monitor testing and replacement services Inspection and Testing IN16494 (equivalent to Hubbell Line Isolation monitor testing and replacement services Inspection and Testing 25603) A Line Isolation monitor testing and replacement services Inspection and Testing NEMA Line Isolation monitor testing and replacement services Inspection and Testing 6-15R B Line Isolation monitor testing and replacement services Inspection and Testing NEMA Line Isolation monitor testing and replacement services Inspection and Testing 6-20R C Line Isolation monitor testing and replacement services Inspection and Testing NEMA Line Isolation monitor testing and replacement services Inspection and Testing 6-30R D Line Isolation monitor testing and replacement services Inspection and Testing NEMA Line Isolation monitor testing and replacement services Inspection and Testing 6-50R E Line Isolation monitor testing and replacement services Inspection and Testing NEMA Line Isolation monitor testing and replacement services Inspection and Testing L6-15R F Line Isolation monitor testing and replacement services Inspection and Testing NEMA Line Isolation monitor testing and replacement services Inspection and Testing L6-20R G Line Isolation monitor testing and replacement services Inspection and Testing NEMA Line Isolation monitor testing and replacement services Inspection and Testing L6-30R 0 Line Isolation monitor testing and replacement services Inspection and Testing No 208 V or 240 V receptacle (8) Configuration of 208 or 240 V receptacle Line Isolation monitor testing and replacement services Inspection and Testing 2 The circuit breaker matching the selected receptacle is installed at the factory in the 208 V or 240 V section of panel's interior. Impedance includes both resistive and capacative readings. GFCI The Ground Fault Current Interrupter is an ingenious device that usually takes advantage of some magnetic properties, in order to compare, continuously, the current actually flowing in the black and white ("hot" and "cold" ) wires of a grounded power system. The table below shows the recommended breaker-to-load schedule. 1 Line Isolation monitor testing and replacement services Inspection and Testing convert to grounded, fault no. 12. No branch circuit should be longer than 150 ft. YES NO NO NEC Article 517-3 Determine Type of Patient Care Area General Care Critical Care YES Grounded Power no extra protection required NEC Article 517-20 Can tolerate power outage during ground fault? Grounded Power with GFCI Isolated Power System Wet Location Courtesy of Steven Engineering, Inc. The ZT1591 has a large 2-1/2" 7 segment display with large bright red LED characters that are easily read in high ambient light. These faults could develop through internal aborted components or poor power cord insulation.3.2.00 76 43.00 102 13. Therefore, the transformer can easily provide power for loads up to 150Line Isolation monitor testing and replacement services Inspection and Testing of its rating. Line Isolation monitor testing and replacement servicess Confirms the Integrity of an Isolated Power System for the Healthcare Market ELECTRICAL SAFETY IN HOSPITALS ORs, ICUs and other critical care areas qualify as electrically hazardous environments. Conclusion Isolated Power Systems provide many advantages and levels of protection over conventional grounded systems. This chapter only covers a few of the important points within these standards. An activated alarm does not mean hazardous current is flowing.2. H2 H1 X2 X1 X Because secondary windings of isolating transformers are ungrounded, a primary to secondary failure may not trip the circuit breaker. Every foot of wire contributes leakage, so we must keep the total footage to a minimum. 70 Article 517-3 specifies the legal minimum requirements in most states. Line Isolation monitor testing and replacement services Operation either as a single-phase or three-phase unit." The early standards were not generally adopted in new hospital construction until 1947. Much has been written about current levels considered lethal for catheterized and surgical patients. However, the Square D brand, 5 kVA isolation panel incorporates a transformer built with a 220 �C insulation system, suitable for a 150 �C rise. Isolated Power Panels Isolated Power Panels BENDER's standard hospital panel provides isolated power service and protection to operating rooms and other critical care areas. By applying the proper kVA loading, a panel can now provide power to multiple rooms and maintain safe operating conditions. There is no maintenance recommendation for the QO circuit breaker. Because the panels provide power to life support equipment, a lockable door is included on all units.) 15 and 25 kVA, 3-Phase Surface Panel 25. Components normally included in the surgical facility panel are: Line Isolation monitor testing and replacement services Isolation transformer Line Isolation monitor testing and replacement services Surgical clocks and timers Line Isolation monitor testing and replacement services Line isolation monitor (LIM) Line Isolation monitor testing and replacement services AM/FM, CD stereo system Line Isolation monitor testing and replacement services Audible indicator alarm Line Isolation monitor testing and replacement services Ground jacks Line Isolation monitor testing and replacement services Circuit breaker panel Line Isolation monitor testing and replacement services Double-size film illuminators Line Isolation monitor testing and replacement services Ground bus Line Isolation monitor testing and replacement services Power receptacles Because all of these components are in the same panel, location of this panel within the operating room is critical. Consequently, patients must be protected through use of special procedures. The potential difference between exposed conductive surfaces in the patient vicinity is checked; the difference cannot exceed 20 mV across a 1000 ? resistor under normal operation. The THC (Total Hazard Current) signal is processed and routed by dual-channel circuitry to the display unit and output alarm relay. However, checking anesthetizing and critical care areas more frequently than general patient areas is recommended. No current flows if either secondary conductor of the transformer touches the plumbing (ground). The power receptacles are "hospital only" locking-type receptacles.The 3-phase panel should be used for 3-phase applications only.The consulting engineer can use this table to estimate the system hazard current at the design stages. A 1 A Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc.2. The typical configuration is provided with one side configured for 208 V or 240 V fixed at 15 kVA and the second side configured for 120 V at 5, 7. Line Isolation monitor testing and replacement services The hospital should appraise several options for its equipment control, rather than choose the easiest or most available program. Continuity of power 3. The displays can also be remotely controlled by the MCTCT remote control panel. Interior Trim Catalog Number Back Box Transformer Catalog Number Interior Catalog Number kVA Primary Voltage Secondary Voltage Primary Circuit Breaker Secondary Circuit Breaker Flush Catalog Number Surface Catalog Number 15H5S22DDIC 15 208 208 90A 8�20, 30 or 60 A Secondary Circuit Breaker or a combination thereof.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 46 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Three-Phase Isolation Panels Dimensions 42. Ventricular fibrillation can occur from exposure to this leakage current. Flush Catalog Number Surface Catalog Number 15H5S22DDCI 15 208 208 90A 8�20, 30 or 60 A Secondary Circuit Breaker or a combination thereof. Line Isolation monitor testing and replacement services The impedance of the isolated system (impedance to ground of either conductor) is tested.3. Grounding Grounding in a patient care or anesthetizing location is an important safeguard against shock and electrocution. Because the resistance of a grounding conductor is extremely important, you must give it careful consideration. Line Isolation monitor testing and replacement services Maximum of four secondary branch circuit breakers. Origin of Leakage Current Electrical Hazards Path of Leakage Current Instrument Cases AC Power Line Ground Wire Leakage Current In Power Transformer AC Power Line Leakage Current In Power Cord Electric Circuit Neglect to Connect Ground Wire of Adapter Frayed Power Cord 2-Wire Extension Cord Misuse of 3-Prong Plug with 2-Wire Extension Cord Courtesy of Steven Engineering, Inc. NOTE: Install indicator alarms above the five foot level in each operating room or anesthetizing location. If the alarm is going off, the last piece of equipment plugged in is usually suspect and should be unplugged.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Dual Output Voltage Isolation Panels 39 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved The interior catalog number is a combination of codes, which are described in the "Interior Catalog Number Selections" table that follows the example below.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Design Guide 23 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved B. For example, year by year more cardiac operations are performed, in some of which the patient's life depends on artificial circulation of the blood; in other operations, life is sustained by means of electric impulses that stimulate and regulate heart action. Ideally suited for: Line Isolation monitor testing and replacement services Locations where space is limited Line Isolation monitor testing and replacement services Renovations Surgical Facility Centers BENDER's custom designed surgical facility centers combine many key operating room components into one isolated power solution.3 and 6. They are called dynamic ground detectors, as opposed to static ground detectors, because the measuring circuit continually switches between the two isolated conductors and ground. Accessory Control Panels These control panels give hospitals the flexibility to mount digital time devices in a desired location. These patients may require special protection even though their normal body resistance has not been intentionally bypassed. Booms are typically wired with a cord that has PVC insulation and a PVC jacket. Section 6.html How much do you know about the power system of an operating room? Do you know when they can and cannot protect the patient? This simulation shows selected circuit pathways in an isolated system, a grounded system, and a grounded system with a GFCI (Ground Fault Circuit Interrupt.00 1575 Shaded area denotes conduit entrance 34.5 38 27. The amount of equipment present varies by hospital, affecting the complexity of the program. It uses microprocessor technology to improve the performance, versatility, and reliability of this unit over any previous LIMs. Holes 1. The specifications should state that, if moisture accidentally enters the conduits, they must be swabbed and thoroughly dried before conductors are pulled. COUNT HOLD RESET Note: 2-gang back box not supplied. This M5IAI and M5IAI50 remote indicator alarms contain a milliammeter like the one found in the panel, as well as a complete test switch facility. If the panel was not accessible, the push button station was located in a separate module, built in a convenient location, or added to the operating room nurse's console. All of this information leads us to the conclusion that the patient environment is a prime target for electrical accidents. System Concept With the increased complexity of isolated systems, it is more important than ever to use a system approach in which all components work with each other to obtain a specific result. This would have warned you of the single fault somewhere in the devices present in the room. The entire installation of the isolated equipment is inspected for conformance with applicable codes to ensure no code is violated. RA1PM (Panel Mount) ORICA ORICA5C Courtesy of Steven Engineering, Inc. Transformer Catalog Numbers 120 V Winding Rating (in kVA) Primary Voltage Secondary Voltages Catalog Number 5. Isolated Power Systems contain a Line Isolation monitor testing and replacement services (LIM). A 5 kVA isolation panel is recommended for operating room use. Advanced Warning Of Equipment Failure It is required that all hospital biomedical equipment that may come into contact with the patient be periodically tested for leakage currents. Field wiring simply involves the connection of the primary feeders and secondary circuits to clearly marked terminals. Only the accessories are optional. Upgrade to a digital MARK V LIM. NFPA No. In addition to these features, model IA1C-PTT provides push-to-test functionality. This LIM represents the most recent generation of line isolation monitors. Once the predetermined number is achieved, the rest of the circuits are locked out. With isolated power systems at one fault to ground the circuit breaker does not trip, maintaining power to the equipment. Line Noise Reduction, the transformer acts as an electrical filter. The NEC recognizes that hospital patients are more susceptible to electrical shock than are normally healthy individuals. No direct electrical connection exists between the primary and secondary coils.2. Disabling the alarm -- unless the surgery is emergent -- is not a prudent response.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 24 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Design Guide D. Something for nothing �noise reduction 4.50 165 6. Interior Trim Catalog Number Back Box Transformer Catalog Number Interior Catalog Number kVA Primary Voltage Secondary Voltage Primary Circuit Breaker Secondary Circuit Breaker 2 2 Any secondary circuit breaker can be used. Although this unit meets current codes and standards, it has two undesirable features: 1. The key to keeping the drill safe is in the ground connection from the drill enclosure to the ground at the receptacle. Electrical current comes to the receptacle via two insulated conductors. The first unit is not actually a LIM, but rather the original "ground detector," which is essentially a balanced bridge device.anest. Test the LIM to ensure the proper alarm trip point. Line Isolation monitor testing and replacement services Less installation labor than two panels. Routine housekeeping procedures and incidental spillage of liquids do not define a wet location. The LIM2010 is intended for use as part of an isolated power system that conforms with the applicable requirements of ANSI/NFPA 99, ANSI/NFPA 70, and CAN/CSA-C22. The proper response of the line isolation monitor and its associated alarm device(s) is observed. Ground Bus (space for 25, 6-24 AWG including 1 lug for 1/0) A AX1 AX2 1 2 3 4 5 A AX1 AX2 1 2 3 4 5 A AX1 AX 2 1 2 3 4 5 A AX 1 AX 2 1 2 3 4 5 X1 H1 H2 X2 To Ground Bus To Ground Bus To Ground Bus To Ground Bus Control Transformer L1 L2 L3 Ground RS-232 Test Meter LIM Common 12V Common 12V Hazard 12V Safe K1 Safe K1 Common K1 Hazard Circuit 1 Circuit 2 Circuit 3 Circuit 4 Circuit 1 Circuit 2 Circuit 4 Circuit 3 50 A 50 A 50 A 50 A Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc. The limitation for total system hazard is set at 5 mA.2. To avoid these risks, generally all wires from anesthesia monitoring equipment are themselves "isolated" and do not have the ability to "ground" the patient.5 120 208 240 277 480 80A 45A 40A 35A 20A XR 29420 53015BB 53019BB 7XR11 7XR21 7XR31 7XR41 7XR51 10H5S11DDI 10H5S21DDI 10H5S31DDI 10H5S41DDI 10H5S51DDI 10 120 208 240 277 480 100A 60A 60A 45A 30A 10XR11 10XR21 10XR31 10XR41 10XR51 Courtesy of Steven Engineering, Inc. Courtesy of Steven Engineering, Inc.50 (4) . Other hospital isolation panels can supply only one output voltage. NOTE: Note: Customer must specify NEMA configuration of receptacle when ordering module Optional accessories that can be included with the 3-phase isolation panel follow: Item Catalog Number Description Panel Mounted Indicator Alarms ORIC-A Green, amber, and red indicating lights and audible alarm mounted on front trim ORIC-A5C Green, amber, and red indicating lights, audible alarm, and microammeter mounted on front trim X-Ray/Laser Indicator and Receptacle Module XRT30-IAI X-ray receptacle with remote indicator alarm, Hubbell receptacle Line Isolation monitor testing and replacement services Inspection and Testing 2720, 30 A XRT60-IAI X-ray receptacle with remote indicator alarm, Hubbell receptacle Line Isolation monitor testing and replacement services Inspection and Testing 8460, 60 A 53007BB Backbox for x-ray receptacle and indicator module1 1 Backbox dimensions: 12 in.00 203 4. Designs for 6 and 8 in. 99 defines the items in an anesthetizing location, which must be powered from the isolated ungrounded system. The switch at the receptacle module energizes the appropriate contactor when activated, while locking out the remaining contactors. As was previously mentioned, codes are continually refined and updated, with frequent amendments between major publications. GROUNDED SYSTEM A grounded power system for the wall outlets in an operating room is just like what you probably have in your home's living room or TV room. The dispersal pad from modern (but not all ancient) electrosurgery / electrocautery devices is NOT grounded, precisely to avoid this and other risks. Reference to these facts may be found in the Standard For Health Care Facilities NFPA 99 and National Electrical Code NFPA 70. Grounding of circuits must be performed as required in Article 250 of the NEC.0�25. Surgical facility centers provide isolated power protection while minimizing footprint and standardizing individual components required in the operating room.00 102 Clock Display Label Holders (5) Timer Displays (3) 12. In the past, projects run by capable consulting electrical engineers have required modifications costing several thousand dollars per operating room.5 dielectric strength. Even if the ground is intact, not enough current flows to disengage the circuit breaker or blow the fuse. Humans, however, generally get harmed by being in physical contact with the ground (e.5 7. Repeating the experiments with the light bulb, we find current will not flow if a single terminal of the light touches either secondary conductor of the isolating transformer. See Schneider Electric brochure No. We can provide your installation, repair, calibration, preventative maintenance and electrical safety inspection services in support of your standard or extended warranty. A permanent sign must be displayed at the entrance to all flammable locations. Holes 1.0 1067 12. deep (minimum) outlet box. Active participation in committees of International and National Standards organizations has helped us develop ELECTRICAL SAFETY products that are in tune with the needs of the healthcare market. Ground detectors may still be used if they were installed before 1971. This is a very important factor: if the drill was really a piece of life support equipment, such as a respirator, it would continue to run without disengaging the circuit breaker or blowing the fuse. The same failure occurring in a shielded transformer, as shown in the shielded transformer illustration on the preceding page, causes a high current flow in the primary.2.0 686 7.60 91 15.2.5 120 208 240 277 480 80A 45A 40A 35A 20A OR 29540V3 3 Vented trim. A clock and elapsed-time indicator are required for most operating rooms, enabling the surgeon and anesthetist to easily see clock time and elapsed time. Use the following equation for fault impedance: E Line Isolation monitor testing and replacement services Inspection and Testing System Voltage R Line Isolation monitor testing and replacement services Inspection and Testing Fault Impedance in Ohms I Line Isolation monitor testing and replacement services Inspection and Testing Alarm Trip Current-Monitor Hazard Current at Trip Point in Amperes For a capacitive fault, use the following equation: E Line Isolation monitor testing and replacement services Inspection and Testing System Voltage R Line Isolation monitor testing and replacement services Inspection and Testing Fault Impedance as Calculated Above in Ohms C Line Isolation monitor testing and replacement services Inspection and Testing Capacitance in Farads The LIM should alarm for an impedance of 10Line Isolation monitor testing and replacement services Inspection and Testing of this value; if it does not alarm, contact the manufacturer. However, its use is not restricted to that application; it can also be used in critical care areas. GROUNDED SYSTEM & BROKEN GROUND & HOT WIRE TO CASE & PATIENT GROUNDED This scenario can easily occur in a non-isolated power system operating room with faulty equipment and metal surgical equipment (or the bed) touching the patient. Limits are established by codes and standards, specifically the NEC. Change letter "C" to letter "D", e.00 1016 32. This panel arrangement consists of three groups of timer controls and one group of push buttons to set the time for the 12/24 hour clock.0 mA. The neutral of the transformer is bonded to ground, which, if adequately sized, will provide an equipotential bond between the neutral and ground conductors.5 394 29. The MCTS95135 is a stainless steel trim panel with holes and studs for mounting the digital clock.00 864 12. The secondary circuit conductors must be provided with an approved overcurrent protective device in both conductors of each branch circuit.2.50 114 3. Sometimes, this interference can be detected on patient monitoring equipment, creating difficulty in gathering information needed by the medical staff. Courtesy of Steven Engineering, Inc. Because the mere presence of a broken ground wire does not cause current to flow through a human, the GFCI will not alarm. 3.00 305 9.00 686 49. It is generally accepted that any time the normal body resistance of a patient is bypassed, the body becomes electrically susceptible. BiomedRx is a home for the brightest and best minds in the biomedical engineering industry. The standard transformer uses a 220 �C rated insulation system. NFPA-99 requires yearly testing of Isolated Power Panels. If the state or local authority having jurisdiction (AHJ) allows the use of grounded power, this should be considered for non-life support, non-life-sustaining equipment such as film viewers and blanket warmers.00 178 . Ground detectors were standard equipment until about 1970, so many of these units are still in use. However, when just the ground wire is broken and NO OTHER FAULTS are present, no harm occurs. The interposing contact controlled panel is a panel with a maximum of four circuits available. However, the following items should be found in every medical equipment testing program: Line Isolation monitor testing and replacement services An established procedure ensuring that equipment serves the purpose for which it is intended, and that it is safe, reliable, and the best choice for its purpose Line Isolation monitor testing and replacement services Specifications that must be adhered to by manufacturers before lease/purchase of equipment Line Isolation monitor testing and replacement services Adequate customer support from the manufacturer, ensuring technical assistance, repair, and consultation as needed Line Isolation monitor testing and replacement services Periodic inspections, calibration, and preventive maintenance Line Isolation monitor testing and replacement services Immediate, thorough inspections when equipment malfunction or shock is considered a possibility Line Isolation monitor testing and replacement services Close monitoring of services provided by outside vendors Line Isolation monitor testing and replacement services A logging/reporting system that provides effective control and record keeping Line Isolation monitor testing and replacement services In-service training to ensure safe, effective use of medical equipment Testing Personnel." Section 6.00 406 Safe/Silence Hazard Stainless Steel Trim IA16CI Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc. Here is a video documentation of a previous isolated power system inspection performed at Beach District Surgery Center, in California. Nowhere else can one find these elements: lowered body resistance, more electrical equipment, and conductors such as blood, urine, saline, and water. An "in-use" lamp and magnetic door switch ensure that the proper amounts of circuits are online simultaneously. The integrated web server displays the status of the entire network of BENDER devices, and may be viewed through the web browser (with Silverlight plugin installed) of any connected PC. Controlled Power Panels for portable Laser and X-Ray System In operating rooms or critical care areas, the portable equipment outlets may require 208 V or 240 V, and will need a separate isolated distribution system (when isolated power is being used in that room).7 of NFPA99 2012 states "Operating rooms defined as wet procedure locations shall be protected by either isolated power or ground fault circuit interrupters.. Primary Circuit Breaker Left Side Right Side Courtesy of Steven Engineering, Inc. NFPA 99 10.5 mA Monitor Hazard Current Courtesy of Steven Engineering, Inc. If the ground wire is properly attached to the enclosure and connected to ground through the ground pin in the plug, there will be arcing in the drill where it contacts the conductive enclosure. Order the appropriate number of QO or QOB circuit breakers. COMBINATIONS GROUNDED SYSTEM & BROKEN GROUND The ground wire to appliances is very important as it is one of the primary defense systems to prevent electrical shock. This would be contingent on interpretation of the mopping of the floor which occurs between cases as "drenching", as defined in Section 3. When initially energized, a piece of equipment may operate correctly and be in a safe condition. The human body acts as a large resistor to current flow. This ground plane is established by the use of a properly connected ground system. Article 517, National Electrical Code Isolated Power System Inspection and Testing NFPA No.0 5. stainless steel door w/lock and key Primary and Secondary Circuit Breaker Shaded areas denote possible conduit entrance Note: Conduit entrance on this side is not available for 15 and 25 kVA panels. Types of LIMs Several types of line isolation monitors are available. These circuits interlock so that only the required circuits can be energized at a given time. The new document includes the text of several other documents, such as: The material originally covered by NFPA 56A is now located in Chapter 3 of NFPA No. However, what if the insulation around the drill motor is defective, allowing the live conductor of the grounded system to contact the metal enclosure? This is a dangerous situation.5 150 125 100 60 DVP2A1k DVP3A1k DVP4A1k DVP5A1k DVT122/DVT123 DVT132/DVT133 DVT142/DVT143 DVT152/DVT153 208 240 277 480 25 150 125 110 60 Courtesy of Steven Engineering, Inc. No branch circuit should be longer than 150 ft. Extra level of protection will keep down liability claims. XR29420 53015BB 53019BB 15XR22 15H5S23PLCIR 208 240 90A 15XR23 15H5S32PLCIR 240 208 90A 15XR32 15H5S33PLCIR 240 240 90A 15XR33 15H5S42PLCIR 277 208 90A 15XR42 15H5S43PLCIR 277 240 90A 15XR43 15H5S52PLCIR 480 208 40A 15XR52 15H5S53PLCIR 480 240 40A 15XR53 25H5S22PLCIR 25 208 208 125A 8�20, 30 or 60 A Secondary Circuit Breaker or a combination thereof. ISOLATED SYSTEM & BROKEN GROUND & HOT WIRE TO CASE In this scenario, the circuit breaker will not protect you. ISOs (Independent Service Organizations) The BiomedRx ISO network provides subcontracting opportunities for independent service organizations involved in the maintenance and servicing of medical equipment and support systems. Copper Ground Bus Bar (1) 1/8" Thick x 3/4" Wide Ground Jack - 30A Twist-to-Lock Lug (1) For Line Isolation monitor testing and replacement services Inspection and Testing 2-Line Isolation monitor testing and replacement services Inspection and Testing 14 AWG Stainless Steel Cover Plate GS1204NI GS504NI Dual Dimensions: Inches mm 3.50 343 HOLD 2 BATTERY TEST HOURS MINS COUNT 2 HOLD 3 COUNT 3 HOLD 4 COUNT 4 4.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Design Guide 25 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved Line Isolation monitor testing and replacement services The LIM is tested as installed in the complete isolated system. It can, however, be used for the ground conductor. Any hospital considering design changes to electrical systems in critical care patient areas should obtain the services of an electrical consulting engineer. This is the only way to ensure the system is properly installed. Degree of susceptibility varies from having an electrical probe or catheter connected to the heart muscle, to having electrodes attached to the outer skin after conductive paste is applied. The level of electrical safety has now been reduced.50 343 Ground Jack Receptacle 30A Twist to Lock 14 Gauge Stainless Steel 18 Lugs for Line Isolation monitor testing and replacement services Inspection and Testing 6-Line Isolation monitor testing and replacement services Inspection and Testing 14 AWG 1 Terminal Block for Line Isolation monitor testing and replacement services Inspection and Testing 0-Line Isolation monitor testing and replacement services Inspection and Testing 12 AWG 4. Because of this, electrical design engineers should still plan for special grounding requirements in these areas. With nothing connected to the system except the LIM, 1000 ?A could flow from either line of the isolated system to ground. The advent of World War II delayed the study's results until 1944, when the National Fire Protection Agency (NFPA) published "Safe Practices in Hospital Operating Rooms. Courtesy of Steven Engineering, Inc. The conclusion is current does not flow from either conductor of the isolated system to ground.2. Line Isolation monitor testing and replacement services Primary main circuit breaker sized in accordance with Article 450-3(b)(1) of the National Electrical Code (NEC). 5. Only a LIM connected to the secondary would indicate the problem.00 72. This is especially important when ordering permanently installed equipment, such as X-ray apparatus. This panel is perfect for smaller applications where the facility has up to four operating rooms. 5 Year Warranty Isolated Power System Inspection and Testing on BENDER Isolated Power Panels and Line Isolation monitor testing and replacement servicess LIM2010 Line Isolation monitor testing and replacement services Isolated Power System Inspection and Testing Note: 5 year warranty is issued when an initial startup checkout is performed by a Manufacturer Authorized Technician EDS491-D-2 3 A complete ground fault location system Ethernet and Modbus/TCP Communication Modules The COM460IP is a full-featured communication gateway for connecting BENDER devices to modern networks. THE LINE ISOLATION MONITOR AND ACCESSORIES The dynamic non-switching analog an digital LIM manufactured by BENDER can be used on single- and three-phase systems. This monitor is included as a standard component of all Square D brand hospital isolation panels.5 13. The threshold of perception for an average adult is 1 milliampere (mA). The COM460IP has many customizable options, including the ability to act as a Modbus/TCP gateway for status information. BiomedRx has isolated power system and line isolation monitor testing and service centers in Alabama, Alaska, Arizona, Arkansas, California (Los Angeles, San Diego, San Francisco), Colorado, Connecticut, Delaware, Florida, Georgia, Hawaii, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachussetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming and Puerto Rico.00 1473 7.00 406 5. The completed system is retested to ensure proper operation. The MARK V Line Isolation monitor testing and replacement services represents a giant leap for the isolated power industry. Continuity Of Supply Probably the strongest argument for the application of isolated power is where continuity of supply is paramount. In your home, additional protection is therefore provided in portions of your home where occupants are likely to be near water -- the kitchen, bathrooms, basements and the like. These new hazards were first recognized in NFPA bulletin No. An electrical wire which is not grounded is thus considered an "isolated" line � if an ungrounded patient were to touch an "isolated" ie ungrounded line, nothing would happen.00 1016 32. The unit is compatible with all hospital isolation transformers and hospital isolation systems. Isolated Systems The term "isolated system" can apply to many systems in a hospital, such as the management of patients having a communicable disease.0V and 5mA theoretical maximum values with a LIM reading of 5mA) Clearly, the Isolated Power System offers considerably greater protection to the operator and patient. QO220. The Line Isolation monitor testing and replacement services constantly probes for possible current connections and displays the potential or existing leakage. Field Test and Inspection Because of the complexity of isolated power and the ground system, the manufacturer should field test the system before use.3.5 dielectric strength may not be obtained. Operating Room Layout Before the electrical design of an operating room begins, some important information should be acquired from hospital personnel.2.50 140 4. The allowable protection is as follows: Line Isolation monitor testing and replacement services Ground-fault circuit interrupter if first-fault conditions are to be allowed to interrupt power Line Isolation monitor testing and replacement services Isolated power system if first-fault conditions are not to be allowed to interrupt power The governing body of the hospital will make the determination of a "wet location," using the following definition: A patient care area that is normally subject to wet conditions while patients are present. Includes the MCTBP battery pack, see page 66. It soon became apparent these initial standards fell short of providing the necessary guidelines for construction of rooms in which combustible agents would be used. Our testing service includes: Testing of ungrounded isolated power systems and wiring. System Size The system must stay as small as possible to limit leakage currents.00 1067 (4) . ORICAC and ORICA5C Both of these models are furnished with green, yellow, and red indicator lights, plus a milliammeter. Surgical facility panels are custom designed and assembled; this allows each hospital to specify the individual components needed in that hospital. BiomedRx can perform the annual testing and re-certification of your system if it passes, and we can provide replacement or retrofitting of your system to bring it into compliance if it doesn't.00 610 22.00 305 8. V. Built-in test circuit to exercise the alarm without adding to the leakage current hazard. Standard straight blade receptacles, NEMA Configuration Line Isolation monitor testing and replacement services Inspection and Testing 5-20R, are now acceptable in operating rooms." In an isolated power circuit, a ground fault would result in an alarm, but power would not be interrupted.3. Line Isolation monitor testing and replacement services The hospital must develop procedures, specifications, and additional program components to meet its needs.50 38 15 3. Components normally included in the surgical facility panel are: Line Isolation monitor testing and replacement services Isolation transformer Line Isolation monitor testing and replacement services Surgical clocks and timers Line Isolation monitor testing and replacement services Line isolation monitor (LIM) Line Isolation monitor testing and replacement services AM/FM, CD stereo system Line Isolation monitor testing and replacement services Audible indicator alarm Line Isolation monitor testing and replacement services Ground jacks Line Isolation monitor testing and replacement services Circuit breaker panel Line Isolation monitor testing and replacement services Double-size film illuminators Line Isolation monitor testing and replacement services Ground bus Line Isolation monitor testing and replacement services Power receptacles Because all of these components are in the same panel, location of this panel within the operating room is critical., by standing on it, or on a floor or other physical structure that has good conductivity to the earth) and then by accidentally touching just one wire -- the black ("hot") wire.50 114 3. A wet location requires special protection against electrical shock. The duplex hospital isolation panel can also be used to satisfy requirements of NFPA 70, the National Electrical Code � (NEC) Article 517-19(a), Critical Care Areas. Line Isolation monitor testing and replacement services Unique audible tone to avoid confusion with other equipment sounds in the operating room. 13. Locate a power and ground module at the head of the table so the anesthetist can easily connect equipment. In the past, the common control system was a series of selector push buttons, located in the panel, which controlled the receptacle-energizing mode.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Isolated Systems 15 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 2.4.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Dual Output Voltage Isolation Panels 37 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved Dual Output Voltage Isolation Panels The dual output voltage hospital isolation panel is a single, ungrounded hospital isolation panel that can supply two different output voltages simultaneously. This panel is operated from the receptacle module in the room. NFPA No. The system hazard current must be kept well below maximum to allow for normal current leakage, which will come from the equipment operating on this power supply. Duplex hospital isolation panels are ideally suited for large operating rooms where more than 14 circuits are required. However, during operation, malfunction may occur due to spillage of liquid or cable damage (cart running over power cable or equipment being dropped). Each hospital must choose the best option for its purposes. Close only one circuit breaker at a time; otherwise, the reading cannot be attributed to a specific circuit.2. BENDER type XRM receptacles modules are recommended for use with this panel configuration.3.0 mA LIM connected LIM disconnected Interference produced by switching LIM Iso-Gard connected Iso-Gard disconnected Absence of interference with ISO-GARD 120V supply as seen on oscilloscope EKG printout 120V supply as seen on oscilloscope EKG printout Monitor Hazard Current 1. The COM460IP connects via Ethernet connections to an existing communication network. It must state that only non-flammable anesthetics can be used in the room. B. If any circuit shows an unusually high hazard current compared to other circuits, investigate it immediately. XR29420 53015BB 53019BB 25XR22 25H5S23DDCI 208 240 125A 25XR23 25H5S32DDCI 240 208 125A 25XR32 25H5S33DDCI 240 240 125A 25XR33 25H5S42DDCI 277 208 125A 25XR42 25H5S43DDCI 277 240 125A 25XR43 25H5S52DDCI 480 208 65A 25XR52 25H5S53DDCI 480 240 65A 25XR53 Wiring Diagram and Dimensions Transformer Line Isolation monitor testing and replacement services Circuit Breaker Panel 14 ga. In other cases, the central system would result in longer runs from the panel to the receptacles and devices. Returning to the example of the isolating transformer, we can convert the isolated system back to a grounded system easily, by connecting one secondary conductor of the transformer to ground. During this orientation, the technician will answer any questions the hospital staff has about the system. BENDER Isolated Power Panels provide isolated power to electrical systems in operating rooms and other critical care areas.00 610 8.00 305 9. We adhere to the highest standard of technical service in the medical device industry. 7. The LIM2010 is a full-featured device which includes a seven-segment display, digital display, and easy-to-read LED bar graph, connection monitoring, and compatibility with BENDER's ground fault location system and communication network. NFPA No. Mounting space is provided within each Square D brand isolated power panel for easy installation. If you need annunciator panels with a greater number of circuits, contact your local Schneider Electric representative for dimensions and cost.00 179 1. To perform the test, inject 20 A between the ground bus in the isolation panel and the grounded points on receptacles and ground jacks.4 of NFPA99 2012 states "Operating rooms shall be considered to be a wet procedure location, unless a risk assessment conducted by the health care governing body determines otherwise. THE ISOLATED POWER SYSTEM (IPS) Diagram 3 shows the schematic representation of an Isolated Power System. Line Isolation monitor testing and replacement services Panel-mounted indicator alarm and microammeter for operating room applications. Application The design of isolated systems from Schneider Electric ensures that all pieces of a system are compatible with each other. For the QOB� (bolt-on) circuit breaker, Schneider Electric recommends checking the tightness of the bolted bus connection at least once each year. The hospital administration and designer are responsible for determining the degree of patient susceptibility and selecting the correct equipment. Suggested boxes are gangable outlet boxes. Panels are controlled by means of a PLC. All devices should obtain their electrical current through their connection to the black and white wires -- they should not return ANY current via their grounding connection (usually a green wire). This device was designed with the user in mind. See the table on page 39.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 50 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Controlled Power Panels PLC Controlled Panels1 1 Up to 8 outlets can be controlled from these panels. Isolation Transformer The heart of the system is the Square D brand isolation transformer. It has been the intent of this paper to try to explain to the decision-makers, in layman's terms, some of the main benefits to having isolated power in their facilities. A remote indicator duplicates audible and visual alarm indications on the LIM.1.00 127 7. Use minimum fills for conduits; this results in a better random lay of the conductors within the conduit, which further reduces the capacitive coupling. Since the operating room support team uses most of the electrical outlets, the majority of the services should be placed behind them, near the head of the table.00 1067 3 kVA, 3-Phase Flush Panel 3 kVA, 3-Phase Surface Panel (4) . The shield establishes a ground plane between the primary and secondary. Electrical accidents fall into three categories: Line Isolation monitor testing and replacement services Fires Line Isolation monitor testing and replacement services Burns Line Isolation monitor testing and replacement services Shock This section covers the subject of electrical shock.0 737 Note: Conduit entrance on this side is not available for 15 and 25 kVA panels.0 10.0 1067 12.0 178 14 Typically 5. If it were not, arcing would result when the black conductor of the grounded system touched the plumbing. This includes standing fluids on the floor or drenching of the work area, either of which condition is intimate to the patient or staff.50 241 13.0 mA under normal line voltage conditions. Hospitals should establish routine programs to test and maintain such equipment as required in NFPA-99. This unit was the first of the low leakage LIMs. Hospital electrical equipment receives much physical abuse; therefore, it must be properly maintained to provide electrical safety for patients and staff. Primary voltage to these panels can be either 208 or 480 V delta; the secondary voltage is usually 208 V.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 42 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Duplex Isolation Panels Optional Accessories Optional accessories for the duplex hospital isolation panel include: Line Isolation monitor testing and replacement services Surface mount backbox for remodeling applications. Courtesy of Steven Engineering, Inc. Here is a video documentation of a previous isolated power system inspection performed Fountain Valley Hospital, California. Line Isolation monitor testing and replacement services Use bedrails made of plastic or covered in insulating material. For more than 8 circuits, contact Schneider Electric Medical Products. Upgrade to a digital MARK V LIM. The MCT4RC remote control panel can be mounted in a location selected for accessibility. Mount the control panel for the timer at the five foot level with the timer mounted at the seven foot level. It also gives the support team easy access to the controls. Mtg. The boxes are designed for flush mounting, but are available for surface mounting on request. Cords are highly flexible and available with either a heavy duty clip or lug on one end, and plug with rubber handle on the other. These provisions were met by supplying each critical patient care area with a specified type of ground jack. BMETs (Biomedical Equipment Maintenance Technicians) BMETs benefit from association with BiomedRx in many ways. QO210 through QO260.00 533 7. Section 6. 1 ?A per ft of wire Courtesy of Steven Engineering, Inc. Critical care and general care areas can also be considered wet areas.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Controlled Power Panels 49 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved Mechanical Interlock Panels1 1 Up to 8 outlets can be controlled from these panels. CONCLUSION We have examined how the Isolated Power System can help protect the patient from electrical shock hazards.0 10. Panel interiors include one 3-pole secondary branch circuit breaker (Type QO).1 of NFPA99 2012 addresses Maintenance and Testing of the Electrical System. Remote indicator alarm stations must be located at the receptacle location. 3 ?A per ft of wire XLP wire, metal conduit. A receptacle module without a remote alarm indicator is also available." Section 6." This subject is also discussed in detail in "grounding" on page 16 of this handbook.00 178 4.00 179 40. Most hospital operating rooms have a set traffic pattern and positioning for the operating room table. Recently, manufactures have rescinded their notation in their specs for XHHW and XHHW-2.25 11 8 12 4 Stainless steel trim plate MCTS95135 9.0 kVA to 25.00 178 40. 3.1. The most common scenario in which a shock occurs is where a grounded ("neutral voltage") patient touches a "hot" wire which exists at a non-zero voltage potential � the electrical current that subsequently passes through the patient can be described as I Line Isolation monitor testing and replacement services Inspection and Testing V/R, where V is the difference in voltage potential between the "ground" (0) and the "hot" line (~ 120V for a standard wall outlet). This emphasizes the need to place the isolation panel as close as possible to the point of usage. This grounding conductor also provides a path for leakage current which could be conducted to an electrical appliance case. The RA1PM model consists of the RA1 remote alarm indicator and a stainless steel mounting bracket (RA1PMB). The unit has an extra set of normally opened and closed dry contacts for use with other external alarm systems. Courtesy of Steven Engineering, Inc. External features of the Iso-Gard LIM include: Line Isolation monitor testing and replacement services Easily readable and understandable faceplate with a smooth surface for cleaning ease and pleasing appearance. An increase to 100 mA will cause ventricular fibrillation.2.562 dia. A LIM is required to continuously check the resistance (impedance) of the total isolated ungrounded system to ground.3. The alarm simply indicates the system has reverted to a grounded or partially grounded system, which is the same system contained in the rest of the hospital.6. Circuit runs must be kept to the shortest length possible. The traffic pattern, along with the positioning of the surgeon and support team, should also be verified. While this is no longer a code requirement, Schneider Electric recommends that at least one ground jack be placed in each critical care patient area. Anesthetizing Location Classifications The first type of location is one which is flammable because explosive anesthesia is used. Testing Programs. Doctors will commonly require simultaneous timing of surgical procedures; the Square D brand surgical chronometer fills this need. the "isolated" system is no longer isolated, but rather is grounded, thus only one additional fault could result in a shock). Systems in the field have been observed to allow as much as 30 mA (30,000 ?A) to flow from line to ground without sounding an alarm. Discuss the methods with the electrical consultant, hospital administration, and hospital radiology staff. Combinations of resistive and capacitive faults are placed on the isolated power system. Consider this scenario: The person using the drill touches his or her opposite hand on the plumbing fixture for support. No wire pulling compound with ground conductor.e. When the system becomes partially grounded, the warning is still necessary, but a limit must be set for the warning to be sounded. Use of the cords can also allow higher than desired current leakage, causing the IPS to go into alarm. If the white wire touches the plumbing, nothing happens. 13. NFPA No.50 114 3.00 203 42. The PLC is programmed to operate a predetermined number of circuits at one time. If the LIM is calibrated to sound an alarm when 2000 ?A flow from either line to ground, approximately one-half of the capacity of the total system would be dedicated to the LIM.00 1422 57. We will also provide written confirmation that the testing logbooks have been delivered to the hospital maintenance staff and that they are up to date. The door covers the branch circuit breakers and line isolation monitors to help restrict unauthorized access.0 10. To conduct these tests, disconnect all secondary equipment from the secondary circuits.0 5. MIN. 2 Transformer included for 3 kVA and 5 kVA when interior is ordered. However, it only recognizes unbalanced resistive or capacitive faults; it cannot recognize a partially grounded system. 99 and the NEC Article 517 allow the grounded circuit providing power to an isolated system to enter the non-hazardous area of an anesthetizing location.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Duplex Isolation Panels 41 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved Duplex Isolation Panels The duplex hospital isolation panel is a single enclosure containing two complete 120 V secondary hospital isolation systems. Also available are hospital grade ground jacks to facilitate implementation of an equal-potential environment.2. Values given are approximate; variations in humidity, conduit moisture content, conduit fill, and wire insulation will give different results.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 18 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Design Guide Equipotential Grounding The NEC (1971, 1975, and 1978 editions) specified and dictated the use of an equipotential grounding system with maximum resistance for each branch of such a system. These panels are UL Listed under Section 1047 Isolated Power Systems Equipment. The panel does not have lock-out features, but does have the ability to turn receptacles on and off where needed. Mtg. Impedance must exceed 200,000 ? to conform with NFPA No. Back boxes for the 120 Series are ordered separately. All fluorescent lighting should be on grounded power. The third opening is shaped to receive a pin (U slot) rather than a blade-shaped prong. The result is a dangerously high secondary voltage (primary + secondary) because of auto-transformer action.00 127 7. The architect can also specify the proper equipment, avoiding later difficulties. Codes and standards state that an alarm must sound and display (it must be audible and visible).0 mA of hazard current. As the diagram shows, normally we would expect 0 Volts from ground to neutral and 120 Volts from the line conductor to either ground or neutral. Three-phase isolation panels can range in size from 3. Includes the MCTBP battery pack, see page 66.9 of NFPA99 2012 addresses Isolated Power Section 6. See page 54 for panel-mounted indicator alarms which you can add to this panel.00 127 1. This assures the hospital and consulting engineer that the equipment meets all existing codes and standards. Confirmation that the impedance to ground of both conductors of the isolated system exceeds 200,000 ohms when installed. BiomedRx maintains the highest standard of service, reporting and documentation in the healthcare industry. Volt. M5IAI and M5IAI50 Some physicians prefer to monitor the hazard current of the isolated system as devices are energized during surgery.2. Certain medical conditions may render a patient particularly vulnerable to electrical shock. Mtg. Since a potential difference is required to produce a current flow, the entire ground plane can rise above ground zero as long as all metal is at the same potential.00 508 8. As with all testing, the values of leakage found at the time of test were just that. It has the same features as the M5IAI, but mounts in a 4-gang, 3 1/2 in. The unit is totally enclosed and non-ventilated to help keep out dust, dirt, recirculating air, and cleaning solutions. High Voltage To Breakers in Panel To Ground Bus 120 Vac Power In Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc. If that leakage rises above a safe threshold, the Line Isolation monitor testing and replacement services will alarm. How many of us has never received some form of electric shock? Isolated Power Systems are the best solution for reliable and safe power, particularly in the hospital environment. Line Isolation monitor testing and replacement services Available in either 5 or 10 kVA ratings.5 38 27. The control of these circuits is important not only for the safety of turning them on and off, but they also turn the remote alarm indicators on and off at the same time. Periodic testing and logging for future test required by NFPA 99 will be explained to maintenance staff.0 178 14 Typically 5. 2 For bolt-on, secondary circuit breakers, add a "B" to the end of the catalog number. This "short circuit" would disengage the circuit breaker or blow the fuse as it did when the live conductor touched the plumbing. The size of the back box will depend on the outlet options for the overall device.00 127 10.00 127 5. holes 38 14 (2 Top, 2 Bottom for mounting) Shaded areas denote possible conduit entrance Ground Bus (space for 25, 6-24 AWG including 1 lug for 1/0) Panel Is field expandable to 16 secondary branch breakers (QO220) Low Voltage Primary Circuit Breaker Electrostatic Shield High Voltage LIM Terminal Board Optional Accessories Circuit Breaker Panel Line Isolation monitor testing and replacement services H1 H2 X1 X2 L1 L2 L3 Ground RS-232 Test Meter LIM Common 12V Common 12V Hazard 12V Safe K1 Safe K1 Common K1 Hazard Transformer 7. The MCT4RC control panel comes self-contained in a flush mounting back box with stainless steel trim. Patients may also be connected to electro-medical devices, such as heating pads, EKGs, drainage pumps, monitors, otoscopes, ophthalmoscopes, and IV lines.3. Leakage Current.00 102 12. All portable equipment has the potential for leakage current. Power Ground Module Line Isolation monitor testing and replacement services Inspection and Testing 12 AWG Line Isolation monitor testing and replacement services Inspection and Testing 12 AWG Line Isolation monitor testing and replacement services Inspection and Testing 12 AWG Line Isolation monitor testing and replacement services Inspection and Testing 10 AWG Line Isolation monitor testing and replacement services Inspection and Testing 10 AWG Surgeon Support Team Line Isolation monitor testing and replacement services Inspection and Testing 12 AWG Line Isolation monitor testing and replacement services Inspection and Testing 12 AWG Line Isolation monitor testing and replacement services Inspection and Testing 18 AWG Traffic Area To Panel Patient Power Ground Module To Panel To Panel To Controlled Power Panel Control Wiring Power Runs Ground Runs Anesthetist To Surgical Light Portable Equipment Isolated Power Panel Receptacle Module Isolated Power System Inspection and Testing Conductor size to be determined by the portable equipment manufacturer.13 156 7. The push button control is still used, but it limits the number of circuits on at one time to one, and takes control of the circuit out of the room.25 83 3.00 1321 Optional Accessories Circuit Breaker Panel Line Isolation monitor testing and replacement services 14 Gauge Stainless Steel Hinged Door with Lock and Key (4) . 3 Panels available with red hospital-grade duplex receptacles. Line Isolation monitor testing and replacement services The appropriate medical engineering services must be obtained. DANGER HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH Line Isolation monitor testing and replacement services Use extreme caution, some of the following procedures are performed when circuits are energized.ufl. 8. The minimum claimed hazard level seems to be 10 microamperes (?A) with a maximum level given at 180 ?A.42 112 4. This control may be customized to meet a particular system's requirements. Should the hot wire contact the case (which could result in the case having a dangerous electrical voltage) the current will flow right to ground via the ground wire connected to the case -- we call this a "short circuit" because the current never made it to the intended device but diverted "short of the goal" and made it back to the power system through the ground wiring. The LIM is equipped with a meter (also required by code) that gives continuous indication of the system's condition. The first step is to isolate the receptacle from the grounded service. Isolated Power System Before using an isolated power system, conduct certain tests required in NFPA-99 to verify proper installation of the equipment and wiring. Interior Trim Catalog Number Back Box Transformer Catalog Number Interior Catalog Number kVA Primary Voltage Secondary Voltage Primary Circuit Breaker Secondary Circuit Breaker 2 2 Any secondary circuit breaker can be used.00 1626 62. The value of 1000 Ohms may vary between less than 100 Ohms to 20,000 Ohms depending on the condition of the patient (moisture content, muscle condition, dry skin, etc. Isolated Power Systems � Explanation We may now examine our circuit parameters more closely by using Ohm's Law and Diagram 5 Diagram 5 Reduced schematic of an Isolated Power System The impedance value of C1 and C2 is 1. One advantage to turning the circuits and remote indicators on and off is the elimination of alarms where the power is not being used. The 7.00 127 3.5 kVA Output Voltage is 120 V and 240 V Primary Voltage Line Isolation monitor testing and replacement services Inspection and Testing 208 V Interior Catalog Number Selections Selection Number Options (1) Primary voltage of dual output voltage isolation panel 2 Line Isolation monitor testing and replacement services Inspection and Testing 208 V 3 Line Isolation monitor testing and replacement services Inspection and Testing 240 V 4 Line Isolation monitor testing and replacement services Inspection and Testing 277 V 5 Line Isolation monitor testing and replacement services Inspection and Testing 480 V (2) Output voltages A Line Isolation monitor testing and replacement services Inspection and Testing 120/208 V B Line Isolation monitor testing and replacement services Inspection and Testing 120/240 V (3) Size rating of 120 V secondary winding (kVA) Eight 20/2 branch circuit breakers are installed at the factory in the 120 V section of panel's interior.00 102 RM1204NI 4 Power Lock Receptacles and 4 Ground Jack Receptacles RMDR1204NI 4 Red Duplex Receptacles and 4 Ground Jack Receptacles 4 ground jack receptacles 4 Power Lock receptacles 4 duplex receptacles 4 ground jack receptacles Dual Dimensions: Inches mm Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc. Among these considerations are: Line Isolation monitor testing and replacement services Operating and panel face temperatures Line Isolation monitor testing and replacement services Sound levels Line Isolation monitor testing and replacement services Minimum leakage Line Isolation monitor testing and replacement services Ease of maintenance Line Isolation monitor testing and replacement services Interchangeability of components Line Isolation monitor testing and replacement services Pleasing appearance Line Isolation monitor testing and replacement services Ease of installation Courtesy of Steven Engineering, Inc. Normally, this current is shunted around the patient via the ground conductor in the power cord. The MARK V Line Isolation monitor testing and replacement services represents a giant leap for the isolated power industry. For example, if the drill is plugged into the system with the ground intact and there is a fault in the drill to the grounded enclosure, that single fault converts the entire system into a grounded system.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 60 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Remote Annunciator Panels Remote Annunciator Panels Annunciator Panel for 1 to 4 Circuits Square D brand remote indicator alarms are available in an annunciator panel for monitoring from a single central location. Isolated Power provides an extra layer of protection for the patient in contact with saline-soaked sponges, anesthetic fittings and the exposed end of electrodes or catheters grounded either intentionally or by accident.0 127 14 Ground Bus (space for 25, 6-24 AWG including 1 lug for 1/0) Control Transformer L1 L2 L3 Ground RS-232 Test Meter LIM Common 12V Common 12V Hazard 12V Safe K1 Safe K1 Common K1 Hazard Brkr Sec. deep, depending on the application. The single enclosure places the receptacles at the point of usage and provides a lower resistance ground path between electrical appliances. It may be the "last one plugged in", making it easier to find.29 84 160Line Isolation monitor testing and replacement services Inspection and Testing 140Line Isolation monitor testing and replacement services Inspection and Testing 120Line Isolation monitor testing and replacement services Inspection and Testing 100Line Isolation monitor testing and replacement services Inspection and Testing 800Line Isolation monitor testing and replacement services Inspection and Testing 60Line Isolation monitor testing and replacement services Inspection and Testing 40Line Isolation monitor testing and replacement services Inspection and Testing 20Line Isolation monitor testing and replacement services Inspection and Testing SILENCE/ SILENCIO HAZARD/PELIGRO TOTAL HAZARD CURRENT IS mA SAFE/ SEGURO mA ALARM LEVEL TEST/ PRUEBA Line Isolation monitor testing and replacement services Inspection and Testing ALARM LEVEL Line Isolation monitor testing and replacement services Inspection and Testing DE NIVEL DE ALARMA 6. Considerable controversy exists about the actual danger level for a patient who has a direct electrical connection to his or her heart.1 of NFPA99 2012 states "Wet procedure locations shall be provided with special protection against electric shock. The line isolation monitor shall not alarm for a fault hazard current of less than 3.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Controlled Power Panels 53 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved Combination X-Ray Receptacle (XRIAI�XRIADI Series) With Indicator Module This unit contains a 60 A, 240 V single-phase approved X-ray receptacle plus a remote alarm indicator (described on page 54). Annunciator Panel for 13 to 16 Circuits This unit is available either surface or flush-mounted for use with a total quantity of 13 to 16 circuits. When installed, such a power system shall conform to the requirements of 6.00 1067 2. Something For Nothing � Noise Reduction The increased use of sensitive electronic systems in the hospital environment has created a growing need to supply these systems with "clean" voltage, free of noise and transients. defective equipment). The use of a central system, containing individual distribution systems for several operating rooms or CCUs, is not practical except in rare circumstances. All of these panels are available in both one-phase and three-phase configurations with 5 to 25 kVA ratings. A single ground fault condition will also not trip the main circuit breaker.50 343 Ground Receptacle 30A Twist to Lock Power Lock Receptacle 20A Hospital Use Only 14 Gauge Stainless Steel 4. The branch circuits can be divided between the two systems to keep branch circuit leakage current from exceeding the limits set by the National Fire Protection Association (NFPA) 99 Standard for Health Care Facilities. The NEC requires that an audible and visual indication of alarm be available wherever isolated power is used. The most accessible XLP wire has been low leakage wire Line Isolation monitor testing and replacement services Inspection and Testing FR-XLP (VW-1 XHHW-2).1. 56, the basis for our current standards. Surgical Facility Panels (SFP) The surgical facility panel offers another method of providing isolated power in an operating room.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Three-Phase Isolation Panels 47 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved Dimensions (cont. PG LIFELINK's experienced engineering staff can design custom-retro-fit kits to update your facility's outdated equipment.g. A LIM test may also be preferred from these devices.e." For liability and operation, has your hospital personnel, that are now maintaining your Isolated Power Systems, been trained by a proper instructor? Many hospitals had training when the equipment was first installed but after many years those individuals are no longer with the hospital. Alarm and Display Features: Status and alarms are viewed on an easy-to-read LCD display.2 � 106 � 120 Line Isolation monitor testing and replacement services Inspection and Testing 119. The Iso-Gard LIM can also be purchased separately and installed as a replacement for any outdated line isolation monitor. A wire becomes grounded when it is attached to a copper rod driven into the ground or to a convenient piece of conductive plumbing pipe, which ultimately runs into the ground.5 13. However, the resistance through the power cord ground conductor is significantly lower, providing protection for the patient.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Codes and Standards 7 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved Codes and Standards It would not be practical to attempt to reproduce the codes and standards that affect the application of isolated distribution systems in hospitals. Line Isolation monitor testing and replacement services Routinely verify that conductive surfaces are grounded in all patient areas. For example, change 15H5S22DDI to 15H5S22DNI.8. 2 Line Isolation monitor testing and replacement services Inspection and Testing patient touching the secondary wiring system). ISOLATED SYSTEM & HOT WIRE TO CASE In this situation, the Line Isolation monitor testing and replacement services will immediately detect the connection between EITHER of the isolated wires, and the case of the appliance, because all metallic cases are connected to ground. Loss of integrity in the ungrounded system does not affect the operation of life support devices. Permanently Installed Ground System (Hard Wiring) Providing proper grounding for all electrical devices assumes that they connect to a sufficient ground system which interconnects to provide an equipotential ground plane for the patient. This value is then used to calculate the Total Hazard Current (THC), which dictates what current could flow if a patient were to come in contact with a conductor to ground.5 kVA and 10 kVA ICU/CCU Panels Dual Dimensions: Inches mm Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc. This control panel contains a set of controls for the timer and two push buttons to set the clock time display. At this time, take LIM readings with all circuit breakers closed and with all circuit breakers open.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Controlled Power Panels 51 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved Interposing Contact Controlled Panels1 1 Up to 4 outlets can be controlled from these panels.5.ground fault protection, ground fault, earth fault, grounding, earthing, gfci, gfcb, electrical shock, electrocution, UL943, electricity, protection, bender, k-tec, ktec, startco, fmt, trifox, pdi, chris bender, steve kay, ground fault relays, ground fault circuit interrupters, electrocuted, smc electrical, consol, consolidation coal, coal, line power, mining safety, msha, shock, predictive maintenance, ground continuity, msp, dtec, patton and cook, marine safe, motor safe, motosafe, cutler hammer, ground fault protection, isometer, insulation monitoring, rcm, imd, ground continuity monitor, slu, rcd, trinitics, dc, ac, arc fault, solar, gen-sets, oil, petrochemical, ground detector, The LIM2010 line isolation monitor (LIM) measures the total hazard current (THC) in an isolated power system. Order the appropriate number of circuit breakers Line Isolation monitor testing and replacement services Inspection and Testing QO220. OR 27520V3 7SLP116 7SLP216 7SLP316 7SLP416 7SLP516 10H5S11DDIL 10H5S21DDIL 10H5S31DDIL 10H5S41DDIL 10H5S51DDIL 10 120 208 240 277 480 100A 60A 60A 45A 30A 10SLP116 10SLP216 10SLP316 10SLP416 10SLP516 54. RETROFIT packages are available for a fraction of the cost of a new installation!Line Isolation monitor testing and replacement servicess Isolated Power provides protection for both the patient and staff against electrical shock. Ideally suited for: Line Isolation monitor testing and replacement services Locations where space is limited Line Isolation monitor testing and replacement services Installations requiring power for both typical hospital equipment and x-ray / laser receptacles Isolated Power Panels Dual System Isolated Power Panels BENDER dual system isolated power panels contain two complete isolated power systems. The units are completely factory wired and tested. Whether an electrostatic shield is necessary in a transformer used in a hospital isolation system has been widely discussed. After all tests have been successfully completed, a written certification will show that all systems comply with codes, good installation practices and specifications. It is important to remember that an increased number of circuits will also increase the total hazard current. However, you will have just made the granddaddy of all leakage scenarios, and the Line Isolation monitor testing and replacement services should alarm strongly.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 36 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems ICU/CCU Panels H1 H2 X1 X2 L1 L2 L3 Ground RS-232 Test Meter LIM Common 12V Common 12V Hazard 12V Safe K1 Safe K1 Common K1 Hazard 7. Isolating the operating room system from normal building service is important. Obviously, conduits must be dry or the leakage characteristics designed into the system will suffer.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 22 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Design Guide Proper location of the receptacles on these two panels, plus receptacles in the isolation panel, should eliminate tripping hazards in the traffic flow area. Line Isolation monitor testing and replacement servicess Isolated Power provides protection for both the patient and staff against electrical shock. Reduced Fire Hazard 6. Conductive flooring is still required by code in all flammable and mixed facilities. Supervisory Module For Mechanical Interlock Panel (8CIIAI) This unit is a remote push button station for control of power to a portable X-ray receptacle.00 102 12. Line Isolation monitor testing and replacement services The technician gives a logbook to the hospital staff. However, as this current increases, it can become a hazard to the patient. If the other terminal of the light bulb touches the kitchen plumbing, nothing happens. The 6 in.0 686 7. Because the patient is not actively being harmed, one does not need to interrupt surgery, but the risks in the room are now much greater and prudent efforts to correct the problem are warranted. 99 Isolated Power System Inspection and Testing Health Care Facilities. Line Isolation monitor testing and replacement services Operation at either 50 or 60 Hz.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 8 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Codes and Standards The primary and secondary of the isolation transformer cannot exceed 600 volts in any isolation system supplying power to an anesthetizing area or other critical care patient area. Each hospital should maintain the necessary testing equipment to conduct these testing procedures. Duplex Receptacle 20A Hospital Grade (4) Copper Ground Bus Bar (1) 1/8" Thick x 3/4" Wide Lug (1) For Line Isolation monitor testing and replacement services Inspection and Testing 2-Line Isolation monitor testing and replacement services Inspection and Testing 14 AWG RMSI504NI 4 Ivory Single Receptacles and 4 Ground Jack Receptacles RMDR504NI 4 Red Duplex Receptacles and 4 Ground Jack Receptacles RM504NI 4 Power Lock Receptacles and 4 Ground Jack Receptacles Dual Dimensions: Inches mm Dual Dimensions: Inches mm Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc. (Leakage current may at this time be measured by connecting a mA or microamp meter from either L1 , or L2 to ground.562" Dia. It consolidates 12 individual NFPA documents or standards into one document. Features Line Isolation monitor testing and replacement services Modular, expandable gateway between BENDER communication bus and TCP/IP Line Isolation monitor testing and replacement services Gateway between BENDER communication bus and Ethernet Line Isolation monitor testing and replacement services Optional Modbus/TCP communication gateway for status information of BENDER devices Line Isolation monitor testing and replacement services Customizable features available through options Line Isolation monitor testing and replacement services Capability for remote access via LAN, WAN, and Internet L1 L2 Power Supply Class 2 GF Location Module EDS Series MK2000 Series Isolated Power System Inspection and Testing ?F Line Isolation monitor testing and replacement services LIM2010 COM460IP Ethernet Modbus/TCP OPC Modbus/TCP SCADA / BMS TCP/IP/Ethernet Modbus/TCP TCP/IP Modbus/TCP Modbus/TCP WiFi Router OPC Server MK2430 LIM2010 Line Isolation monitor testing and replacement services 4 Isolated Power Panels with Receptacles and Ground Jacks Including all of the features of standard panels, BENDER isolated power panels may also be provided with a section for hospital grade power receptacles and/or ground jacks. 5. When installing a new curtain rod at the window over the kitchen sink, one would probably use a small electric drill. These modules use standard electrical gang boxes, therefore back boxes are not included. Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc. This series is packaged in a durable flush mounting phenolic case. Clocks, Timers, & Communication Solutions Surgical Chronometer The ZT1594 surgical chronometer is a complete, microprocessor based system that displays time of day and three elapsed times. In these areas, patients are subjected to invasive procedures and connected to lineoperated, electro-medical devices. They operate in either the 12- or 24-hour time mode, depending on how the hospital wishes to use them. Leave the secondary circuit breakers in the off position. Consequently, the line isolation monitor (LIM) monitors only the wiring and its inherent leakage to that single receptacle. Schneider Electric has a variety of control schemes from push button to switches located in the operating room. Remember that everything connected to the isolated system increases the total hazard index: LIM, transformer, circuit breakers, secondary wiring, and any peripheral equipment. Schneider Electric recommends using the QO� (snap-in) circuit breaker in isolated power panels because of the ability of the breaker to grab the bus.5 120 208 240 277 480 80A 45A 40A 35A 20A 6SLP116 6SLP216 6SLP316 6SLP416 6SLP516 7H5S11DDIL 7H5S21DDIL 7H5S31DDIL 7H5S41DDIL 7H5S51DDIL 7. The Isolated Power System contains a high quality shielded isolation transformer which provides a convenient and effective means of greatly reducing or even eliminating line-to-line and line-to-ground noise on voltage feeders.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 56 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Power/Ground Modules Power/Ground Modules Power/Ground Modules Isolated Power System Inspection and Testing 120 Series Where room ground extensions and power receptacles are both required, this module offers convenience and saves much labor in field wiring. This panel works like the PLC panel, but limits the output to only one circuit at a time. The black conductor is safe to handle as long as you do not simultaneously touch the white conductor or any grounded item. 99 sets the limits of impedance to ground of the isolated system and the instructions for testing to determine compliance with the standards. The use of articulating arms (booms) is commonplace and must be considered when they are installed in a procedure room using isolated power. Consequently, a system to fit the special needs of each hospital is practical.) L1 L2 L3 Ground RS-232 Test Meter LIM Common 12V Common 12V Hazard 12V Safe K1 Safe K1 Common K1 Hazard LIM Terminal Board Panel is field expandable to 16 secondary branch breakers (QO220). Obviously, the white conductor and the kitchen plumbing have something in common. Take all possible safeguards to guarantee the transformer's isolating properties. Diagram 7 Reduced schematic of Isolated Power System with 1000 Ohm person in contact with line conductor Leakage current is now: 120V Line Isolation monitor testing and replacement services Inspection and Testing 100 microamps 1201000 Our 1000 Ohm person coming into contact with L1 has approximately doubled the leakage current to 100 microamps, which is still an extremely low level.562 dia. The system has four sevensegment displays with large, red LED characters easily read in high ambient light.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 40 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Dual Output Voltage Isolation Panels Trim The trim catalog number is DVC.4. The dual output voltage panel has space for two secondary breakers for the 208 V or 240 V side of the panel. Periodically test these pieces of equipment and tag the equipment, showing leakage current readings. The special procedures and equipment required become more complicated with the degree of electrical susceptibility of the patient. The plug has a large rubber handle. System Comparison The previous section illustrates that conductors of an isolated system are safer to handle than are the conductors of a grounded system. This type of LIM connects to ground through a high resistance so that it can measure the impedance of the total system.00 330 4. The "connection" should be below 2 milliAmperes (mA).5 7.50 114 BATTERY TEST HRS.2 � 106 Ohms, giving a line-to-ground capacitance value of: Z Line Isolation monitor testing and replacement services Inspection and Testing V Line Isolation monitor testing and replacement services Inspection and Testing 60 Line Isolation monitor testing and replacement services Inspection and Testing 1. This was not because of poor planning, but because the engineers did not receive the information needed to plan usable systems. In these locations, a "Ground Fault Current Interrupter" (GFCI) is a part of the power circuit, and it serves in an attempt to very quickly shut off power if a potentially deadly leakage to ground (e.4.00 254 11. This is not true! Today medical and nursing sciences are becoming progressively more dependent on electrical apparatus for the preservation of life of hospitalized patients.1 ohm meter.3. Appropriate actions may be taken while the system remains online. To accomplish this, Schneider Electric provides an electrostatic shield between the primary and secondary windings as standard equipment in all transformers used in hospital isolated systems. Isolation panels serving a single bed in a critical care area require only eight secondary breakers. Available as optional accessories, these alarms include various combinations of indicating lights (green Line Isolation monitor testing and replacement services Inspection and Testing safe, yellow Line Isolation monitor testing and replacement services Inspection and Testing silence, red Line Isolation monitor testing and replacement services Inspection and Testing hazard), audible alarms, and milliammeters. Line Isolation monitor testing and replacement services The ground test for power and ground receptacles is performed by applying a constant current between the room reference grounding bus and each ground contact of each receptacle, measuring the resulting voltage. Carefully study the code to determine exactly what special grounding provisions must be provided in each project. The electric drill has an electric motor which is completely enclosed in a conductive housing.5 + 7. Thus the circuit breakers and the grounded cases of appliances provide one means of protecting users. Before a designer can choose the proper electrical distribution system for a hospital, the governing body of the hospital must inform the designer about the location's use. This bulletin is not intended as a "do it yourself" manual for installation of hospital isolated systems. However, careful planning on the part of the consulting engineer, architect, contractor, and hospital personnel can reduce electrical hazards to nearly zero.3. If these values significantly increase, inspect the system and take corrective action. Courtesy of Steven Engineering, Inc. NOTE: Mount unit at least 48 in. Detailed Features of the Duplex Isolation Panel Iso-Gard LIMs Primary main circuit breakers Secondary circuit breakers (Type QO, 2-pole) Divider separates two isolation systems Type 1 enclosure with 14-gauge stainless steel trim Courtesy of Steven Engineering, Inc. The receptacle module contains a switch that sends a signal to the panel that power is required at the receptacle. Standard Type THHN wire is definitely unsuitable. This creates a nightmare situation for the hospital electrician/biomedical engineer or whoever is in charge of equipment testing. Installation Convenience The Square D brand hospital isolated power system was designed for convenient and economical installation by electrical contractors. 99. Thus touching ground has little consequence to you, if you are in such a room. Calculate an external fault impedance once every six months.75 95 Stainless Steel Cover Plate Ground Jack - 30A Twist-To-Lock Note: 8-gang back box not supplied. low profile panel is available from 3 to 10 kVA and includes a NQOD type interior, accepting snap-in or bolt-on breakers. Primary application is where the equipment ground bus in the emergency distribution panel is not conveniently located or cannot accept the large number of connections, which may be required for the area. Its position indicates how much current could flow from either conductor of the isolated system to ground if a path was provided. This Line Isolation monitor testing and replacement services may be built into the circuit breaker box for your operating room (in which case it will have a remote alarm portion located somewhere in your operating room if the circuit breakers are outside your OR), or it may be on the wall in your OR.00 127 Hinged Door with Lock and Key Power Lock Receptacles 14 Gauge 20A Hospital Use Only (8) Stainless Steel Ground Jacks 30A (6) 5.00 127 5." This, in effect, grounds the secondary through the primary.0 737 5.50 241 13. The trim has no louvers or grilles for air circulation, which contributes to safe and easy cleaning. Please contact your Schneider Electric representative for details. Models with additional features include: MK2000P: Test button MK2000C: Amber "OVERLOAD" Isolated Power System Inspection and Testing alarm LED MK2000CP: Amber "OVERLOAD" Isolated Power System Inspection and Testing alarm LED and test button MK2000CBM: Amber "OVERLOAD" Isolated Power System Inspection and Testing alarm LED, test button, and digital displays showing THC reading and Line Isolation monitor testing and replacement services Inspection and Testing isolation transformer load Isolated Power System Inspection and Testing in real-time Advanced MK Series Remote Indicators The universal remote alarm indicators and operator panels MK2430/MK800 are intended for visual and audible indication of operating status and alarm messages from BENDER systems including the LIM2010 and EDS series ground fault location evaluators. W x 4 in.00 813 Shaded areas denote possible conduit entrance 42. Trim Plate (MCTS95135) and Back Box (53007BB) These accessories, when ordered with the MCT12B digital clock, allow the timepiece to be wall-mounted. Here is a video documentation of a previous isolated power system inspection performed at the Veterans Administration Hospital, Los Angeles Lately there has been controversy in the hospital engineering community concerning the use of isolated power systems and the 2012 changes in the National Fire Protection Association standard, NFPA 99. The LIM must respond audibly and visibly when the impedance of the system degrades to the extent that 5 mA of current will flow through either conductor of the system to ground in a zero impedance fault.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems ICU/CCU Panels 35 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved Intensive Care/Coronary Care Panels These panels incorporate the same components and features as the operating room panels, but have the added feature of eight power receptacles and six approved grounding jacks which connect to a ground bus for attaching fixed equipment and building structural grounds. We use a receptacle module with a remote alarm indicator built into it for this purpose.5 7. Optionally, it can also be used to silence all audible alarms in the system. Other factors contributing to electrical susceptibility are patients with hypokalemia, acidosis, elevated catecholamine levels, hypoxemia, and the presence of digitalis.00 203 9. Design Guide I.12 79 2. A note on interpretation of the LIM reading: many variables exist to exactly what current could flow to the patient: 1. It is selectable for either 5mA or 2mA. 99, investigate the system and correct the problem. Many feel that since hospitals no longer use flammable gases, isolated power is of no benefit.00 813 12. Continuity of power is maintained on systems where interruption cannot be tolerated.562 dia. Lay out circuit feeders for minimum length, as in the case of operating room 120 V circuits. Contact Schneider Electric Medical Products for more information. Although the primary reason for Isolated Power System design and installation was not to achieve this noise reduction, but to provide a low leakage secondary power system, we must consider the "built-in" advantages of this system again when comparing isolated power with conventionally grounded systems. The shield attenuates common-made noise or disturbances that are frequently generated by equipment used in other locations such as Diathermy and X-ray equipment. Flush Catalog Number Surface Catalog Number 3H5S11DDIL 3H5S21DDIL 3H5S31DDIL 3H5S41DDIL 3 120 208 240 277 120 30A 20A 20A 15A 8-20 A 53020BB OR 29540 OR 27520 3SLP116 3SLP216 3SLP316 3SLP416 5H5S11DDIL 5H5S21DDIL 5H5S31DDIL 5H5S41DDIL 5H5S51DDIL 5 120 208 240 277 480 60A 30A 30A 25A 15A 5SLP116 5SLP216 5SLP316 5SLP416 5SLP516 6H5S11DDIL 6H5S21DDIL 6H5S31DDIL 6H5S41DDIL 6H5S51DDIL 6. The limit is usually reached when 12 to 14 branch circuits are connected. If we assume that a person has a body resistance of 1000 Ohms, and comes into contact with the live conductor, we can expect the following result, as shown in the equivalent circuit, Diagram 2. The only time a central system makes sense is when this location coincides with the closest placement of individual panels to each room. This large panel condenses many of the electrical accessories normally found in an operating room into one unit. 7 Dual Display Digital Clock and Timer The ZT1590 digital clock and timer is a complete, microprocessor-based device that displays both the time of day and elapsed time information. 2.5 7. GROUNDED SYSTEM & GFCI BROKEN GROUND & HOT WIRE TO CASE In this scenario, the circuit breaker will not protect you, because of the broken ground wire. Interior Trim Catalog Number Back Box Transformer Catalog Number Catalog Number kVA Primary Voltage Secondary Voltage Primary Circuit Breaker Secondary Circuit Breaker1, 2 1 All panels contain 8-20/2 branch breakers and are field convertible to 16-20/2 branch circuit breakers. XR29420 53015BB 53019BB 15XR22 15H5S23DDIC 208 240 90A 15XR23 15H5S32DDIC 240 208 90A 15XR32 15H5S33DDIC 240 240 90A 15XR33 15H5S42DDIC 277 208 90A 15XR42 15H5S43DDIC 277 240 90A 15XR43 15H5S52DDIC 480 208 40A 15XR52 15H5S53DDIC 480 240 40A 15XR53 25H5S22DDIC 25 208 208 125A 8�20, 30 or 60 A Secondary Circuit Breaker or a combination thereof. Back boxes for the 50 Series are customer provided.00 254 64. Your analog line isolation monitor requires monthly testing. A complete inspection of all devices for polarity. NOTE: 2-gang back box not supplied. Standard Features All Square D brand, three-phase hospital isolation panels include the following components: Line Isolation monitor testing and replacement services Hospital isolation transformer from 3.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Isolated Systems 13 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved Two paths to ground are possible, one down the ground wire in the cord into the receptacle ground, and one through the person holding the drill (who is grounded through the plumbing).00 635 31. A given area may contain equipment that requires power greater than the isolated system provides; but the hospital will not use every piece of equipment at the same time. The panel will serve various locations within the hospital. Section 3.00 406 Shaded areas denote possible conduit entrance Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc.8.50 343 Ground Receptacle 30 A Twist to Lock Red or Ivory Duplex Receptacle 20 A Hospital Grade 14 Gauge Stainless Steel 8. If additional receptacles are required, up to 16 secondary breakers can be used. V.00 203 5. Make the final selection after weighing the pros and cons of each method. It's operation is simple and any failure generally results in equipment or circuit disconnection, very quickly within less than 1 cycle.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Three-Phase Isolation Panels 45 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved Catalog Numbers To order three-phase hospital isolation panels, specify the correct catalog number for the following items: Line Isolation monitor testing and replacement services Interior Line Isolation monitor testing and replacement services Trim Line Isolation monitor testing and replacement services Backbox Line Isolation monitor testing and replacement services Transformer NOTE: The interior, trim, backbox, transformer, and optional panel mounted accessories for the LIM must each be ordered separately. When writing specifications, we suggest choosing an isolated transformer rated at 5 kVA, having a continuous overload capability of 25 to 50Line Isolation monitor testing and replacement services Inspection and Testing . Should a faulty piece of equipment be plugged into any of the output sockets of the Isolated Power System, then this would immediately cause the LIM to alarm, a warning that such an event had just occurred. 4. The low profile panel uses a common backbox for all voltages. Schneider Electric also has a line of 3-phase isolation panels to provide power in operating rooms for specialized equipment such as operating room tables and electrosurgical laser machines. If the residence was built within the last 30 years, the receptacle most likely has three openings, not two.5 kVA and 10 kVA Operating Room Panels Wiring Diagrams and Dimensions Dual Dimensions: Inches mm Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc. The technical complexities of today's hospitals require all involved parties to have a thorough understanding of the hospital's objectives. This compound is usually unnecessary, because most of the runs on an isolated system are short.PDF file you can download here. Secondary Circuit Breaker Schedule Number of Breakers Load 4 8 receptacles in panel (2 per breaker) 2 4 receptacles in anesthetist's module (2 per breaker) 2 4 receptacles in surgeon's module (2 per breaker) 1 Surgical light 1 Clocks Courtesy of Steven Engineering, Inc. The THC reading provides advanced warning of isses that are present in the system. The magnitude of this leakage current depends on the characteristics of the appliance and its insulation. We can measure the voltage drop across the system capacitance by using a high impedance voltmeter. The cord is an extra flexible Line Isolation monitor testing and replacement services Inspection and Testing 10 copper conductor with a green neoprene jacket. The Timer may be activated from the remote control MK1550 or an external contact (code blue or other monitoring output).3. The conclusion must be that the white wire is safe to handle as long as the black conductor is not handled at the same time. The proper accessories are often available at no extra cost, if they are specified when the order is placed.5 7. It could be from 1 V to approximately 240 V in a 120�120 V transformer. All materials conduct electricity to some degree. However, had the ground wire been properly connected to the equipment case, and the Line Isolation monitor testing and replacement services working, it would have given a very strong alarm with a very high current indication. The positioning of the electrical equipment in the operating room has a direct relationship to this information. The factory trained technician performs the following on-site testing: Line Isolation monitor testing and replacement services All tests on the isolated system, ground network, and LIM are in accordance with Article 517 of the National Electrical Code and with NFPA No. Installation of circuit breakers rated higher than 60A avoids UL Listing. Courtesy of Steven Engineering, Inc. 2.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 10 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Isolated Systems Give special consideration to the following potential electrically susceptible patient areas: Line Isolation monitor testing and replacement services Acute care beds Line Isolation monitor testing and replacement services Angiographic labs Line Isolation monitor testing and replacement services Cardiac catheterization labs Line Isolation monitor testing and replacement services Coronary care units Line Isolation monitor testing and replacement services Delivery rooms Line Isolation monitor testing and replacement services Dialysis units Line Isolation monitor testing and replacement services Emergency room treatment areas Line Isolation monitor testing and replacement services Human physiology labs Line Isolation monitor testing and replacement services Intensive care units Line Isolation monitor testing and replacement services Operating rooms Line Isolation monitor testing and replacement services Post-operative recovery rooms UL 2601-1 This is the UL Standard against which all medical and dental equipment is tested by the Underwriters' Laboratories. The ZT1590 has a dual-row, 7-segment display with large, red LED characters, easily read in high ambient light.5, or 10 kVA. IGD Iso-Gard� Line Isolation monitor testing and replacement services (LIM). Furthermore, no sparking occurs when either conductor touches the plumbing; the fuse or circuit breaker maintains the connection. Non-flammable anesthetizing locations can be further divided into locations that are subject to becoming wet and those that are not. This is ideal for something such as a hairdrier, in which an equipment fault can be disastrous. The snap-in breaker is recommended because of its ability to grab the bus and clamp down under heaver loads. holes 38 14 (2 Top, 2 Bottom for mounting) Panel Is field expandable to 16 secondary branch breakers (QO220) H1 H2 Low X1 X2 Voltage Primary Circuit Breaker Electrostatic Shield High Voltage Ground Bus (space for 25, 6-24 AWG including 1 lug for 1/0) L1 L2 L3 Ground RS-232 Test Meter LIM Common 12V Common 12V Hazard 12V Safe K1 Safe K1 Common K1 Hazard LIM Terminal Board Panel Is field expandable to 16 secondary branch breakers (QO220) 35.5 kVA 1 Line Isolation monitor testing and replacement services Inspection and Testing 10. If more circuits are required, consider the use of a second or even a third isolation power panel.00 762 6. See accessories for more information. Interlocking circuitry allows predetermined locations to be used at any given time. (In this example, system capacitance has been neglected as its impedance value is many times that of the neutral-ground bonding.9 of NFPA99 2012 defines a Line Isolation monitor testing and replacement services as "A test instrument designed to continually check the balanced and unbalanced impedance from each line of an isolated circuit to ground and equipped with a built-in test circuit to exercise the alarm without adding to the leakage current hazard.00 508 20. Each circuit breaker should supply two duplex receptacles, or four outlets per circuit.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 52 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Controlled Power Panels Contactor Controlled Panels1 1 Up to 8 outlets can be controlled from these panels.985 mA Allowed for System Hazard Current Alarm Band Width 0.00 432 12. PG LIFELINK's experienced engineering staff can design custom-retro-fit kits to update your facility's outdated equipment.00 254 5. THE LINE ISOLATION MONITOR The line isolation monitor is a device which continually monitors the impedance (resistance and capacitance) from all lines (single and three phase) to ground and indicates what current could flow to a patient of body resistance 1000 Ohms, should the patient come into contact with a line conductor (i. The transformer would function electrically with no indication of this failure. The upper display is a time clock and the lower display is an elapsed timer. THE GROUNDED SYSTEM Diagram 1 Diagram 1 shows the schematic of a conventionally grounded system. The power cord ground wire could easily accommodate a 5 mA fault and stay well within the requirements of NFPA No. During construction, keep conduit ends capped so they remain free from moisture. Switching between the isolated conductors and ground causes interference on the isolated system. Flush Catalog Number Surface Catalog Number 15H5S22DDI 15 208 208 90A 1-60 AMP Secondary Circuit Breaker XR29420 53015BB 53019BB 15XR22 15H5S23DDI 208 240 90A 15XR23 15H5S32DDI 240 208 90A 15XR32 15H5S33DDI 240 240 90A 15XR33 15H5S42DDI 277 208 90A 15XR42 15H5S43DDI 277 240 90A 15XR43 15H5S52DDI 480 208 40A 15XR52 15H5S53DDI 480 240 40A 15XR53 25H5S22DDI 25 208 208 125A 1-60 AMP Secondary Circuit Breaker XR29420 53015BB 53019BB 25XR22 25H5S23DDI 208 240 125A 25XR23 25H5S32DDI 240 208 125A 25XR32 25H5S33DDI 240 240 125A 25XR33 25H5S42DDI 277 208 125A 25XR42 25H5S43DDI 277 240 125A 25XR43 25H5S52DDI 480 208 65A 25XR52 25H5S53DDI 480 240 65A 25XR53 Wiring Diagram and Dimensions Transformer Line Isolation monitor testing and replacement services Typically 40. QO210 through QO260.43 392 3.?? Document what corrective action that needs to be completed to meet that standard. XR29420 53015BB 53019BB 25XR22 25H5S23PLCIR 208 240 125A 25XR23 25H5S32PLCIR 240 208 125A 25XR32 25H5S33PLCIR 240 240 125A 25XR33 25H5S42PLCIR 277 208 125A 25XR42 25H5S43PLCIR 277 240 125A 25XR43 25H5S52PLCIR 480 208 65A 25XR52 25H5S53PLCIR 480 240 65A 25XR53 Wiring Diagram and Dimensions L N 1 2 3 4 5 Electrostatic Shield Main Circuit Breaker Ground Bus (space for 25, 6-24 AWG including 1 lug for 1/0) X1 H1 H2 X2 L1 L2 L3 Ground RS-232 Test Meter LIM Common 12V Common 12V Hazard 12V Safe K1 Safe K1 Common K1 Hazard LIM Terminal Board Control Transformer Programmable Controller Customer Load Connections Auxiliary Contacts Contactor A A AX2 AX1 Low Voltage Transformer Line Isolation monitor testing and replacement services Circuit Breaker Panel 14 ga. Flush Catalog Number Surface Catalog Number 3H5S11DDI 3H5S21DDI 3H5S31DDI 3H5S41DDI 3 120 208 240 277 120 30A 20A 20A 15A 8-20 A OR 24350 53013BB 53017BB See note 2 5H5S11DDI 5H5S21DDI 5H5S31DDI 5H5S41DDI 5H5S51DDI 5 120 208 240 277 480 60A 30A 30A 25A 15A 7H5S11DDI 7H5S21DDI 7H5S31DDI 7H5S41DDI 7H5S51DDI 7. stainless steel door Primary Circuit Breaker Shaded areas denote possible conduit entrance 40. Your analog line isolation monitor requires monthly testing. BiomedRx services isolated power systems and line isolation monitors manufactured by: Amsco Auth Bender Crouse Hinds Edwards Electromagnetic Industries (EMI) Federal Pacific Federal Pioneer General Electric Hevi-Duty Hill-Rom Hospital Systems Isotrol Measurement Engineering Limited (MEL) Post Glover Russell & Stoll Square D Grainger Schneider Here is a video discussing recent controversies concerning the use and inspection of isolated power systems and line isolation monitors. Such patients cannot avoid or disconnect themselves from an electrical hazard that would be relatively harmless to a normal person. Inexpensive to build and reliable because of its simplicity, the ground detector is unaffected by and does not create any radio frequency (RF) interference.63 118 12. The following figure illustrates this example.00 813 20.00 1067 8. Schneider Electric is often asked to specify manufacturers and wire catalog numbers for the low leakage conductor.184 of NFPA99 2012 defines a Wet Procedure Location as "The area in a patient care room where a procedure is performed that is normally subject to wet conditions while patients are present, including standing fluids on the floor or drenching of the work area, either of which condition is intimate to the patient or staff.25 83 4.68 93 4. Do not accept any hospital isolation equipment unless it is listed and labeled as a complete system under this standard.00 305 4. What we commonly call "insulators," such as rubber or plastic coverings on wire, are actually just poor conductors. However, when the other terminal of the light bulb touches the kitchen plumbing, the bulb illuminates as it did when it touched both wires. A total of 90 EDS devices may be interconnected via RS-485.0 178 14 Typically 5. Square D recommends all consulting engineers who design hospitals have the hardcover "handbook" version of this document available. There are distinct advantages to integrating power ground receptacles into one enclosure, rather than in individual power receptacles scattered around the room.3. 99 describes the line isolation monitor (ground detector) required to monitor the isolated system. The 20 A ground test can also verify that all metal within the room is properly grounded. 3H5S11CDDI to 3H5S11DDDI. Poor communication causes poor planning, which will be very costly and time-consuming if the system must be modified after it is installed. This reduces the integrity of the isolated system by partially grounding it.00 559 42. In 1949, this committee published a new standard, NFPA No. The following simple analogy should help the layman understand isolated systems.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 34 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Operating Room Panels Low Profile Operating Room Panels When isolated power system panels were introduced in the 1960's, Schneider Electric offered panels from 5 to 16 in. Utilizing the latest in line isolation monitoring technology, the LIM2010 provides advanced warning of faults to help reduce downtime and increase operational efficiencies. The unit includes four power receptacles, four twist-to-lock ground jacks, and a ground bus with a generous number of lugs for external ground connections.0 737 Note: Conduit entrance on this side is not available for 15 and 25 kVA panels.00 609 58. For more than 8 circuits, contact Schneider Electric Medical Products.06 2 6. The Iso-Gard LIM has the following capabilities: Line Isolation monitor testing and replacement services Operating voltages of 85 through 265 Vac. Three-phase isolation panels can be supplied with up to four secondary branch breakers, which are rated from 10 through 60 amperes and are the 2-pole or 3-pole type. stainless steel door Primary Circuit Breaker Shaded areas denote possible conduit entrance 40.75 and 5. When specifying a surgical facility panel, consider which location is best for all concerned personnel.5 15 12 4 Backbox 53006BB Isolated Power System Inspection and Testing Isolated Power System Inspection and Testing 15 12 4 Auxiliary control MCT4RC 13. These units contain four ground jack receptacles and a ground bus.00 1524 42." RA1WM (Wall Mount) IA1C M5IAI50 M5IAI Courtesy of Steven Engineering, Inc. The conclusion from the above paragraph is that it is safe to handle the black conductor only if you do not simultaneously touch the white conductor, kitchen plumbing, or any other grounded item. The LIM2010 line isolation monitor (LIM) measures the total hazard current (THC) in an isolated power system. PG LIFELINK's experienced engineering staff can design custom-retro-fit kits to update your facility's outdated equipment. It is selectable for either 5mA or 2mA.0 1067 12.00 813 74.0 10. Back boxes for the 50 Series are customer provided. Answers There are no perfect electrical systems or infallible equipment to eliminate hospital electrical accidents. Section 6.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 66 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Digital Clocks, Timers, and Accessories Accessory Equipment Battery Pack (MCTBP) This optional battery pack is designed for use in conjunction with the model MCT12B digital clock. Figure 1: Monitoring and notification capabilities of an isolated power system Since the line isolation monitor is on an isolated power system, power interruption is not necessary and critical processes may continue to run.00 330 12. Rigid metal endoscopes, urological equipment and other metal used in surgery can make the connection to ground. Line Isolation monitor testing and replacement services Only trained personnel should perform these procedures.8.00 330 12. The Iso-Gard LIM also self tests and self calibrates once every 65 minutes eliminating the need to manually test the unit periodically. The jack also allows connection to the grounding system for testing. As previously mentioned, many large hospitals may have well in excess of 10,000 pieces of equipment. Actuation of the test switch shall activate both visual and audible alarm indicators.00 762 6. Obtain copies of all standards referenced in this bulletin from the National Fire Protection Association, Batterymarch Park, Quincy, MA 02269. Between 10 and 20 mA, the person experiences muscle contractions and finds it more difficult to release his or her hand from an electrode.00 737 16. Hospitals Our consultive, technical and educational services are designed to ensure maximum efficiency and effectiveness of patient care, while maintaining an environment of care which complies with all regulatory agencies. Circuit Breaker Protection All Schneider Electric hospital isolated systems include a primary circuit breaker and 2-pole secondary circuit breakers.7 mA. Line Isolation monitor testing and replacement services Request that patient electrical devices such as toothbrushes and shavers be battery powered. An optional rechargeable battery pack can be purchased to prevent loss of time information during a power interruption. holes 14 (2 top, 2 bottom for mounting) Shaded areas denote possible conduit entrance 27.2 of NFPA99 2012 addresses Line Isolation monitor testing and replacement servicess Section 6. Enhanced features and improved functionality make this the most flexible LIM on the market today. The NFPA No.3. Liquid spillage, cable damage, equipment misuse, or just plain heat aging through continued usage are all factors which may contribute to the decline in the insulation value. Perform periodic testing, according to this schedule: Test the LIM push-to-test button monthly.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Duplex Isolation Panels 43 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved Catalog Numbers Interior Trim Catalog Number Backbox Transformer Catalog Number Catalog Number kVA (each side) Primary Voltage Secondary Voltage Primary Circuit Breaker Secondary Circuit Breakerq Flush Catalog Number Surface Catalog Number 5/5H5S11DDI 5 + 5 120 120 60A 8 (20A) OR32730 53047BB 53053BB 5/5XR11 5/5H5S21DDI 208 30A 5/5XR21 5/5H5S31DDI 240 30A 5/5XR31 5/5H5S41DDI 277 25A 5/5XR41 5/5H5S51DDI 480 15A 5/5XR51 7/7H5S11DDI 7.5 Isolated Power System Inspection and Testing Isolated Power System Inspection and Testing Isolated Power System Inspection and Testing Rechargeable battery pack (optional) MCTBP Isolated Power System Inspection and Testing Isolated Power System Inspection and Testing Isolated Power System Inspection and Testing Isolated Power System Inspection and Testing Isolated Power System Inspection and Testing Surgical Chronometer Clock and three timers MCT14B 16. Isolated Power Systems � Explanation D.00 1067 60. Electrical shock is produced by current, not voltage.7 mA 2. In conclusion, we feel Isolated Power supplies special protection against electrical shock in "wet locations" or any area where the interruption of power cannot be tolerated.35 85 3. It virtually eliminates all of the undesirable features in the early dynamic ground detectors and line isolation monitors. Wire resistance is inversely proportional to its cross-sectional area.562 Dia. The secondary line-to-ground potential depends upon the portion of the primary winding between the ground and the fault, plus or minus the portion of the secondary winding. Be sure to determine the load of secondary equipment being used; very few cases will require a 7. BENDER type HGC hospital grade ground cords are recommended for use with this configuration.24 82 Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc. Isolated Power System with our 1000 Ohm person Diagram 3 Diagram 4 Diagram 4 assumes a typical equally distributed, balanced capacitive system where the small leakage current, 50 microamps, flow from L1 , via C1 , through the ground, and returns to L2 via C2 . UL derives its standards for performance requirements from the applicable NFPA standards and the NEC. This is an important feature in an isolating transformer since it provides for intermittent heavy loads, like those presented by hypothermia equipment.12 79 3. Advance warning system of what their equipment condition is. BiomedRx can bring any healthcare facility into compliance with NFPA code requirements.75 95 Note: 4-gang back box not supplied. There are many other requirements for the flammable anesthetizing locations; these requirements are discussed in NFPA No.00 1118 8. Be careful when connecting the ground terminal of the equipment receptacle to the grounding system; the ground terminal must connect to the ground system serving the patient who is served by the equipment receptacle. A good commercially available wire insulation for this application is cross-linked polyethylene, having a mineral filler instead of a carbon black filler.00 357 24. This gives the surgeon easy access to power for surgical equipment.00 305 MCT14B (Bottom View) MCT14B (Front View) Dual Dimensions: Inches mm 13. For more information, contact your local Schneider Electric representative. C.3." Anesthetizing Location Classifications As with NFPA No.50 343 3.0 5. UL 1047 This is the UL Standard for hospital isolating equipment. An alarm goes off if an unacceptably amount of current to the ground is possible (i. The components are factory engineered, wired, and thoroughly tested to provide the ultimate in protection, reliability, and ease of installation.00 1524 30. This panel incorporates: Line Isolation monitor testing and replacement services The isolation transformer, which is a standard low-leakage, electrostatically shielded, 220 �C insulation system Isolated Power System Inspection and Testing 80 �C temperature rise, 30 dB sound level isolating transformer Line Isolation monitor testing and replacement services A primary circuit breaker Line Isolation monitor testing and replacement services Eight secondary 2-pole circuit breakers Line Isolation monitor testing and replacement services A Square D brand Iso-Gard LIM The panel is non-ventilated and has a Line Isolation monitor testing and replacement services Inspection and Testing 304 stainless steel trim with a brushed finish.00 51 2. Even had the case of the equipment been grounded through an intact wire, still no current will flow in the system, because "ground" is not a part of the power circuit in an isolated system. The extent of difficulty encountered with these types of interference varies with the installation and design of the patient monitoring equipment. It contributes less leakage to the system because of its higher impedance connection ground.0 or 5.6 of NFPA99 2012 states "The use of an isolated power system (IPS) shall be permitted as a protective means capable of limiting ground-fault current without power interruption. This is the most controversial section. Conduct this system impedance test without any secondary equipment connected to the circuits.00 508 42. Both balanced - as many occur from using equipment with balanced RF filters - and unbalanced resistive and impedance faults are detected by the LIM. The lower the AWG, the larger the wire.g. Dynamic Ground Detector. Although the panel is designed to serve the needs of a coronary care or intensive care bed, it has been widely applied to provide power within special procedure rooms, cardiovascular laboratories, and general operating rooms.0 kVA.) Scroll down for a in-depth narrative play click to play simulation ISOLATED SYSTEM Note that in an operating room (OR) with isolated power, there is a Line Isolation monitor testing and replacement services (LIM) mounted somewhere, which gives you a reading of how much "connection" there is between the supposedly isolated wall power wires, and earth ground.00 51 8. Many hospitals and consulting engineers are unaware of this document and its requirements. MK2000P-G1 (left) & MK2000 CBM (right) RAS-04AF MK2430 (left) & MK800 (right) Isolated Power System Inspection and Testing Overload feature requires the use of BENDER STW series CTs installed in the isolated power panel. They are furnished with Type Line Isolation monitor testing and replacement services Inspection and Testing 304 brushed stainless trim. The LIM is a predictive device; by sounding an alarm, it predicts that 5 mA of current could flow from one conductor of the isolated system to ground if a path for the current is provided.2. Isolated Power reduces the ignition hazard from arcs and sparks between a live conductor and grounded metal and mitigates the hazard of shock or burn from electric current flowing through the body to ground.562 Dia. 4890BR9201 for more complete information and specifications. Voltage across the person would be: 1000 � 120 Line Isolation monitor testing and replacement services Inspection and Testing 0. This inability to sound an alarm (to recognized balanced fault systems) is the main reason codes and standards no longer allow its use.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Remote Annunciator Panels 61 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved Annunciator Panel for 9 to 12 Circuits This unit is available either surface or flush-mounted for use with a total quantity of 9 to 12 circuits. At the same time, the panel's 120 V circuits can supply power to convenience receptacles, surgical lights, X-ray film illuminators, sterilizers, and other 120 V appliances commonly found in operating rooms. Line Isolation monitor testing and replacement services Iso-Gard Series D microprocessor-controlled line isolation monitor (LIM) manufactured by Schneider Electric. This includes the technicians responsible for maintaining the systems. The code demands that the Line Isolation monitor testing and replacement services Inspection and Testing 1 conductor in the system be color-coded orange, the Line Isolation monitor testing and replacement services Inspection and Testing 2 conductor color-coded brown, and the ground conductor color-coded green. This ground jack provides connection to the grounding system for redundant grounding of exceptionally hazardous equipment. This impedance must be greater than 200 kilohm (k?) for either line to ground. Be sure they are clearly visible to personnel. However, it can be located in a more convenient location. In this example we will examine why our 1000 Ohm person is greatly protected from potentially lethal shock hazards. Grounded Wiring Modern housing systems have grounded wiring, in which both the neutral (connected to power company neutral wire) and grounded wires (connected to equipment) are grounded. We have built an enviable reputation for reliability, low sound levels, and minimum inherent leakage. They may also lie in pools of fluid. 2. Unshielded Transformer Shielded Transformer Courtesy of Steven Engineering, Inc. A few minutes, hours, or even a few days later, the equipment may have been exposed to environmental conditions which caused further decline in insulation integrity. 2. This panel configuration is ideally suited for having a centralized location for receptacles and ground jacks. If it does exceed 2 V, inspect the ground for proper connection and properly sized wire.0 737 Note: Conduit entrance on this side is not available for 15 and 25 kVA panels. It is believed that approximately 1,000 ? of resistance lies between the patient's heart and external body parts.00 381 32. In these areas, the patient may come in contact with ordinary appliances, such as nurse call systems, electrical beds, examining lamps, telephones, and entertainment devices. The PLC controlled power panel puts control of the circuit in the rooms and can be programmed to allow more then one circuits to be energized at a time. The special circuitry developed by Schneider Electric monitors both sides of the line continuously, eliminating the need for switching. The Line Isolation monitor testing and replacement services (LIM) continuously monitors the Isolated Power System and immediately detects line-to-ground faults.3. Also check for audible and visible alarms attached to the LIM. The leakage current could result in potential differences between pieces of equipment and could flow through vital organs of the patient, if a patient current path is established. Courtesy of Steven Engineering, Inc. Countertop areas may be served with grounded power when the power used is restricted to this area.00 305 6.5 5. For example, the grounding conductor in a power cord is Line Isolation monitor testing and replacement services Inspection and Testing 18 AWG; it represents about 0.00 1016 Optional Accessories Secondary Breakers Line Isolation monitor testing and replacement services 14 Gauge Stainless Steel Hinged Door with Lock and Key Transformer Shaded areas denote possible conduit entrance 16. Isolated Power Systems � Explanation 4. Line Isolation monitor testing and replacement services If included in the team, the hospital maintenance engineer will better understand the isolated system. A minimum wall thickness of 2/64-in. That is that they are grounded.3.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Design Guide 21 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved IV. This induces a current in the secondary winding, which is completely insulated from the primary winding by electromagnetic induction. Control Panel (MCTCT) Designed to operate with the MCT12B digital clock (see above). On a 120 V system, this corresponds to 600 ?A when measured through a milliammeter connected between line and ground. This demonstrates the energy used when any household appliance is run. Line Isolation monitor testing and replacement services Totally enclosed, non-ventilated design helps prevent air-borne dust, lint, or germs from recirculating through the panel.75 95 Stainless Steel Cover Plate Ground Jack - 30A Twist-To-Lock Note: 8-gang back box not supplied.3.00 203 1.50 (4) .50 (4) . By utilizing the EDS series devices, the source of the fault in the isolated power system can be identified within seconds. Since the amount of wire is often proportional to the number of circuit breakers, keep the number of circuit breakers to a minimum. The resistance depends on the body mass and moisture content. 4. The design also helps keep cleaning solutions out of the panel when the walls are scrubbed down by housekeeping staff. This causes the primary circuit breaker to open, removing the unit from service. R Line Isolation monitor testing and replacement services Inspection and Testing E I C Line Isolation monitor testing and replacement services Inspection and Testing 1 0. Isolated Power also protects the patient and staff against electrical shock due to defective patient-care-related electrical appliances. The grounding system permits intermingling of electric appliances located near or applied to the patient without the hazard of leakage or fault current to the patient. The line isolation monitor is a critical component of an isolated power system. This device was designed with the user in mind. A cup of very hot coffee would not be a hazard for a normal person; however, it is a potential disaster for the nerve-impaired individual. Reduced Shock Hazard A.00 305 Silence Hazard Safe Remote Indicator Dual Dimensions: Inches mm 8CIIAI Dimensions 12 Gauge Stainless Front Cover Remote Indicator 10. Failure to use the grounding conductor in power cords causes a dangerous electrical hazard.00 152 14. The unit can also drive external analog meters as found in many remote alarm units such as the Square D brand remote alarm with ammeter. When this predetermined limit is exceeded, the green light goes out, the red indicator illuminates, and an audible signal sounds. The front trim is Line Isolation monitor testing and replacement services Inspection and Testing 304 stainless steel with a Line Isolation monitor testing and replacement services Inspection and Testing 4 brushed finish." Although these isolated systems are very important to hospital operations, many hospital staff lack even a basic understanding of how isolating systems work. However, when just the ground wire is broken and NO OTHER FAULTS are present, no harm occurs. Regulations Post-1984 Isolated power systems are no longer required in operating rooms as of 1984, thus some modern equipment may offer the potential for electrocution, although this risk is reduced by the use of ungrounded batteries for power, double insulating equipment, and isolating patients from equipment (Morgan and Mikhail 23-23). holes 14 (2 Top, 2 Bottom for mounting) Shaded areas denote possible conduit entrance 3 kVA and 5 kVA Operating Room Panels 7. 42.0 178 15. Such occurrences on an Isolated Power System would, as described above, result in the LIM alarming and a warning being issued of potential fault hazard.00 203 32.50 38 52.00 330 4. This selection process requires close communication between the hospital administration, medical staff, and the consulting electrical engineer. However, since the position of the head of the operating room table can be varied, the hospital personnel should advise the electrical engineer of the table's standard position. The LIM2010 has an automatic self-calibration and self-check feature. Enclosures Enclosure back boxes are constructed of cold-rolled steel that is degreased, phosphatized, and finished in gray baked enamel. This is interesting, as many of the Line Isolation monitor testing and replacement servicess still in use are older, often analog units that are set to alarm at only 2 mA.00 305 16.88 581 Back Front Maximum Above Floor Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc. 99. Connect the ground terminal of the LIM, which monitors the controlled power panel, to the equipment ground bus in the emergency distribution panel serving the 120 V isolated systems within these areas. When the predicted leakage current to ground returns to an acceptable level, the unit automatically resets.1V 1201000 Voltage across C2 would be: 1. Back boxes for the 120 Series are ordered separately. Person 120V 0. Including a meter that displays hazard current in the amount of current that would flow through a low impedance ground fault on the ungrounded electrical system; hazard current is predicted fault current. If designated as a wet location, extra electrical protection is required. There are several ways to isolate power, but the most common and economical is to use an isolating transformer.50 114 4.00 762 24. 3. Electrostatic Shield Main Circuit Breaker X1 H1 H2 X2 Low Voltage High Voltage LIM Terminal Board Typical of 4 Circuits L1 L2 L3 Ground RS-232 Test Meter LIM Common 12V Common 12V Hazard 12V Safe K1 Safe K1 Common K1 Hazard Ground Bus (space for 25, 6-24 AWG including 1 lug for 1/0) Circuit 1 Circuit 2 Circuit 3 Circuit 4 To Ground Bus Control Transformer Circuit 1 Circuit 2 Circuit 4 Circuit 3 50 A 50 A 50 A 50 A A AX1 AX2 A A AX1 AX2 AX1 AX2 1 2 3 4 5 A AX1 AX2 To Ground Bus To Ground Bus To Ground Bus 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc.00 283 4. Hospitals may choose to employ their own medical engineering personnel, share this personnel with other hospitals, or contract with an outside vendor to service medical equipment. Person 120mA 100 microamp (with 50 microamp initial leakage) (5. Advance warning of equipment failure Please note the copy of NFPA News Brief referring to electrical shocks in operating rooms which have installed grounded power.3. Upgrade to a digital MARK V LIM. This amount of current will produce a slight tingling feeling through the fingertips. 76BM, published in 1971. The most generally acceptable method is a PLC controlled system using the switch in the receptacle module.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 6 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Electrical Hazards The following figure illustrates the origin and path of leakage current. Presentation Dual Voltage Panels � System designed to support 120 V Surgical Applications as well as 208V (240V) Medical lectrical Equipment in one common back box and trim Duplex Panels � Allow for two systems to leverage one back box and trim Ideal for expanding needs in surgical applications for power needing multiple systems Reduced depth solution to supply one single circuit for 208V or 240V in one of the compartments well supplying the 120 V requirements from the other Compartmentalize with a none removable barrier supporting applications where both Standard and Emergency Power is required (Life Support) Standard Panels � Compact solution for all 120 V distribution power applications Control Panels � Designed to support multiple rooms with 208V (240V) Medical Electrical Equipment applications, PLC Controlled to limit the number of energized circuits Isolated Power Systems Isolated power systems offer an invaluable advantage: Early detection allows for critical systems to remain online in a single fault condition.5 kVA and above. The batteries are rechargeable, which eliminates the need to replace dead batteries. We also provide applications assistance and in-service education to your clinical and biomedical engineering staff. No branch circuit should be longer than 150 ft. When one terminal of the light bulb touches the black conductor, nothing happens. In critical care areas, where one transformer serves one bed, a 3 kVA transformer is recommended.00 305 Safe/Silence Hazard Stainless Steel Trim IA12CI Dual Dimensions: Inches mm 13. All features, as well as the device setup, may be carried out with the four, onboard pushbuttons, or on an optionally connected MK1550 clock remote. For a 120 V system, this compares to 600 ?A.00 152 6 and 9 kVA, 3-Phase Flush Panel 6 and 9 kVA, 3-Phase Surface Panel 21. Its operation is based on a patented principle implemented using reliable and time-tested hybrid technology.562 dia. Our representatives are professionals in the installation, repair, calibration and preventative maintenance of all modalities of biomedical and medical imaging equipment. The panel includes: Line Isolation monitor testing and replacement services Isolation transformer, rated to your requirements Line Isolation monitor testing and replacement services Primary circuit breaker Line Isolation monitor testing and replacement services Eight (8) 2-pole circuit breakers, field expandable to 16 Line Isolation monitor testing and replacement services LIM2010 Line Isolation monitor testing and replacement services Line Isolation monitor testing and replacement services Compatible with BENDER's EDS ground fault location system Isolated Power Panels for X-Ray / Laser Equipment Isolated power panels may also be configured to feed x-ray and laser equipment at intervals up to 60 A (within the power rating of the panel). In spite of this great versatility, all Square D brand modules interface with each other perfectly.00 102 Safe/Silence Hazard Stainless Steel Trim IA4CI Dual Dimensions: Inches mm 13.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 12 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Isolated Systems The following illustration shows how a transformer is constructed and connected to a receptacle.0 305 1. A divider in the unit's backbox separates the systems from top to bottom and front to back.0 kVA copper wound, low leakage, with electrostatic shield. Remote Indication RAS Remote Annunciator Station RAS series remote annunciator stations utilize multiple MK series remote indicators, each connected to a line isolation monitor.3. Devices with broken or damaged ground wires should be taken out of service and repaired.5 38 27. A hazardous level of current could be maintained since the human body has sufficient resistance to keep the current below the level required to disengage the circuit breaker or blow the fuse. NFPA No.00 203 9.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Isolated Systems 11 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved In this example, consider an electrical receptacle in the counter area of a household kitchen. Here is a video documentation of a previous isolated power system inspection performed (in English and Spanish) at Kindred Hospital in South Bay, California. This requires close coordination with the medical staff of the facility, to ensure the designer understands current medical procedures as well as possible future procedures.00 508 30. Similar to a standard distribution panel or load center, it can supply both 120/208 V or 120/240 V of ungrounded, isolated, single-phase power using only one isolation transformer. 2 Transformer included for 3 kVA and 5 kVA when interior is ordered.00 1067 29. In addition, we provide video documentation of all service visits. An externally applied current of 50 mA causes pain, possibly fainting, and exhaustion.0 686 7. The main ground connection in the module accommodates up to a Line Isolation monitor testing and replacement services Inspection and Testing 1/0 cable. The GFCI detects this quickly, and shuts off power to the system.562 Dia. Line isolation monitor Definition Intro: Electrocution To receive a shock, persons need body contact with two separate conductive materials at different voltage potentials to complete a circuit. It is the document used by most inspectors. Patients who are anesthetized, or are demobilized through illness, restraints, or drug therapy, also have a higher degree of electrical susceptibility than normal individuals. AX1 X1 H1 AX2 H2 X2 C1 A1 A2 A3 B1 B2 B3 C2 C3 D1 D2 D3 8 station interlock switch w/Off position station "A" shown. C. Press the push-to-test button on the LIM to ensure its test capability. This equipment includes elapsed time indicators for the operating room. This also allows someone to change circuits at will. Equipment used in the OR is NOT normally grounded, but the equipment casing is � this configuration protects this patient, as the secondary wiring system, which is not grounded, requires two faults in order to shock the patient (fault no.00 127 5. Line Isolation monitor testing and replacement services Additional QO220 circuit breakers to increase panel from 8 to 16 branch circuits. PowerLock Receptacle 20A Hospital Grade (4) Copper Equalizer Ground Bus Bar (1) 1/8" Thick x 3/4" Wide Lug (1) For Line Isolation monitor testing and replacement services Inspection and Testing 2-Line Isolation monitor testing and replacement services Inspection and Testing 14 AWG 4. Advantages The duplex hospital isolation panel provides the following advantages: Line Isolation monitor testing and replacement services Slim design to minimize the amount of horizontal wall space used in the operating room.81 97 3.) The M5IAI is the original remote indicator with a meter. In order for harm to occur, electrical current must pass through the patient (or other human) in a complete circuit from one of the two conductors from the power company, to the other.00 1372 29. Installation of circuit breakers rated higher than 60A voids the UL Listing. When laying out the operating room electrical system, the location of power and ground receptacles is significant. The most susceptible patient is the one exposed to externalized conductors, diagnostic catheters, or other electric contact to or near the heart. All panels are designed to accept up to 16 secondary breakers per UL. Any help that can be given to let the equipment operator know that his/her device is in a correct and safe condition is a benefit to both patient and operator alike.00 102 3. These difficult runs can be anticipated and provided for by using oversized conduits to ease the situation.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 44 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Three-Phase Isolation Panels Three-Phase Isolation Panels Three-phase hospital isolation panels are intended for use as a power supply for equipment such as surgical lasers, laminar airflow systems, and other three-phase specialty equipment used in hospital operating rooms. See page 66. This device continually monitors all potential parallel leakage paths to ground.2 No. Suggested boxes are gangable outlet boxes. BiomedRx testing of isolated power systems exceeds the requirements of NFPA 99 6. In the unshielded transformer in the figure above, this failure occurred at "X. We must never neglect the fact that a leakage on a grounded system will return via the low impedance of the parallel paths to ground�for example, our 1000 Ohm person. Member organizations benefit from bulk purchasing discounts, technical training, and earning opportunities in support of our asset management and manufacturer support services.0 10.00 152 5. At the same time, the Iso-Gard LIM uses an advanced methodology to monitor hazard current without interfering with other sensitive patient monitoring equipment. The alarms should operate in the safe condition and in the alarm condition. You should observe a slight meter deflection, indicating the monitor hazard current plus the hazard current for the isolation panel.00 508 20. In this situation, one should unplug devices to find out which one may have the problem. It mounts in a 53008BB backbox (ordered separately). When the two conductors touch each other, a violent arc results, part of the conductor melts, and the fuse opens or the circuit breaker trips. They are both "floating".0 208 208 240 240 277 277 480 480 208/120 240/120 208/120 240/120 208/120 240/120 208/120 240/120 DVT522 DVT523 DVT532 DVT533 DVT542 DVT543 DVT552 DVT553 7.76 908 15 and 25 kVA, 3-Phase Flush Panel 60. A thorough study of applicable codes and standards is required to effectively design a project.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 28 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Electrical Maintenance Adapters and Extension Cords The use of extension cords in patient areas and anesthetizing locations often presents an electrical hazard. Power and ground cords can be dangerous to circulating personnel; so, whenever possible, locate receptacles so cords do not lie within the major traffic area. Enhanced features and improved functionality make this the most flexible LIM on the market today. Thus, everything attached to the secondary conductors of an isolating transformer will partially ground the system. Order the appropriate number of circuit breakers Line Isolation monitor testing and replacement services Inspection and Testing QO220. Proof of the engineered superiority of Square D brand products is found throughout the country in numerous installations, many dating to the earliest applications of isolating transformers. Even if a person contacts two pieces of metal, both at 10 V, a current path will not develop. Since the patient provides a grounding path via the attendant and pacemaker, a current divider will result. Straight-blade single, straight-blade duplex, and twist-to-lock receptacles can be provided in a wide array of combinations. Optional Accessories Optional items available with these panels are: Line Isolation monitor testing and replacement services Panel- or remote-mounted indicator alarms with or without analog LIM meter.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Codes and Standards 9 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved Both types of anesthetizing locations must be further classified as "wet" or "not wet" areas.2 mA Allowed for System Hazard Current 4. Section 6.562 Diameter Mounting Holes 14 16. In order for harm to occur, electrical current must pass through the patient (or other human) in a complete circuit from one of the two conductors from the power company, to the other.5 12 4 4 Backbox 53008BB Isolated Power System Inspection and Testing Isolated Power System Inspection and Testing 12 4 4 Courtesy of Steven Engineering, Inc.00 25 4.00 1829 20.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Electrical Hazards 5 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved Surgical techniques bypass the patient's body resistance and expose the patient to electrical current from surrounding equipment. Person Line Isolation monitor testing and replacement services Inspection and Testing Current flowing through our 1000 Ohm person Grounded Isolated Power System V. Conductors for the isolated ungrounded system must be color-coded: Line Isolation monitor testing and replacement services Orange for conductor Line Isolation monitor testing and replacement services Inspection and Testing 1 Line Isolation monitor testing and replacement services Brown for conductor Line Isolation monitor testing and replacement services Inspection and Testing 2 Line Isolation monitor testing and replacement services Green for the grounding conductor Line Isolation monitor testing and replacement services Where three-phase isolated systems are used, yellow for conductor Line Isolation monitor testing and replacement services Inspection and Testing 3 NFPA No. Section 6. See page 54 for panel-mounted indicator alarms which can be added to this panel. The following figure illustrates the size of power and ground conductors and their correct routing in a typical operating room. However, in many grounded system operating rooms, GFCI protection is not utilized, primarily because in the event of a leakage current --whether a person is being harmed or not -- the power will be shut OFF and that carries a risk as well. The visual and alarms shall be activated. This causes a higher than desired leakage and can cause the total resistance to be below what is required by NFPA-99. If the panel location is inaccessible or inconvenient for operating personnel, the push button station is available in a separate module that can be installed at the nurses' station or any other convenient location. The LIM monitors all circuitry from the isolation transformer via circuit breakers and power and ground modules and finally to each piece of connected equipment. NOTE: Keep in mind that this meter merely predicts the possibility of the condition; it does not indicate that current is actually flowing. This situation may be represented by the equivalent circuit shown in Diagram 6. 99 specifies the "Grounding System.0 1016 42.00 102 13. The cords are designed to withstand hard usage. 99.00 76 3.562 dia. Features include: Line Isolation monitor testing and replacement services Normal operation indicator (green LED) Line Isolation monitor testing and replacement services Connection monitoring alarms Line Isolation monitor testing and replacement services Total hazard current Line Isolation monitor testing and replacement services Device errors Line Isolation monitor testing and replacement services Overload Isolated Power System Inspection and Testing Line Isolation monitor testing and replacement services Test results Line Isolation monitor testing and replacement services Over-temperature Line Isolation monitor testing and replacement services Measured values Line Isolation monitor testing and replacement services Location of fault from EDS device Line Isolation monitor testing and replacement services Audible and visual indication During normal operation, the MK2430/MK800 indicates the overall status of the system.50 343 8. In this example, we assume that nonisolated patient monitoring leads are used. The 5 kVA isolation transformer from Schneider Electric is capable of a 150Line Isolation monitor testing and replacement services Inspection and Testing continuous overload within its maximum designed temperature. The LIM does not interrupt electrical service. Follow the test procedures listed below: LIM Test 1. The alarm condition does not mean there is imminent danger to the patient or anyone else. The portable electric drill probably has a three-prong plug.0 5. It contributes only 50 ?A of leakage to the system, about one percent of the system's usable capacity. Because of the size of hospital electrical systems, it is difficult to establish and follow a maintenance program which includes the entire hospital. The entire panel assembly is listed under UL Standard 1047, Hospital Isolated Power Systems. Periodic testing for isolated power systems is required in NFPA-99.00 356 24.6. The full load design temperature, however, is limited to an 80 �C maximum rise. The LIM2010 may be configured for additional alarms, including transformer overload and overtemperature, overvoltage and undervoltage, and more. Because this section is subject to individual interpretation by local Code authorities, work closely with these authorities before selecting the equipment to be powered from standard grounded systems. With the broken ground, no alarm goes off, and now the case of the device is connected to the power system voltage. This protection, however, may not be adequate for frequent or serious disturbances.0 5.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Power/Ground Modules 59 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved Ground Modules Isolated Power System Inspection and Testing 120 and 50 Series Ideal for room ground bus extensions to make ground connections in large operating rooms convenient. Typical Operating Room Ground System Line Isolation monitor testing and replacement services Inspection and Testing 10 AWG Conductor Power/Ground Module RM 120-4N Power/Ground Module RM 120-4N Power/Ground Module RM 120-4N Size Conductor Per Code Size Conductor Per Article 250 of NEC Substation Distribution Panel Isolation Panel Courtesy of Steven Engineering, Inc. Typical configurations include an x-ray or laser power receptacle matching the NEMA plug configuration of the equipment. HGC Series-Hospital Grade Ground Cords and Jacks BENDER hospital grade ground cords are available in various lengths for implementing an equal-potential environment. While there are some panels designed to accept a ventilated trim, Schneider Electric recommends that these panels be placed in areas that are not required to maintain a sterile atmosphere, such as a non-sterile corridor. Line Isolation monitor testing and replacement services, testing device that continually measures the balanced and unbalanced impedance from line-to-ground on each line of an ungrounded electrical system. Examples of items that partially ground the system, without making direct connection to ground, include the following: Line Isolation monitor testing and replacement services Insulated wires enclosed in grounded metal conduit Line Isolation monitor testing and replacement services Electrical components within permanently installed electrical equipment Line Isolation monitor testing and replacement services Electrical components within portable devices housed in grounded enclosures (commonly referred to as the capacitance of the system) Because an isolated system can easily become grounded without giving any indication to the user, a way must be found to monitor the integrity of the isolation in the system. The principles are no different outside the operating room.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Iso-Gard LIM 62 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Iso-Gard� Line Isolation monitor testing and replacement services (LIM) The Iso-Gard LIM is a distinct fifth-generation line isolation monitor. For example, a patient who has impaired nerve sensitivity cannot detect heat. Wiring Diagram H1 X1 X2 X3 X4 H2 Electrostatic Shield Secondary Main Secondary Main 208V Circuit Ground Bus (space for 25, 6-24 AWG including 1 lug for 1/0) LIM Terminal Board L1 L2 L3 Ground RS-232 Test Meter LIM Common 12V Common 12V Hazard 12V Safe K1 Safe K1 Common K1 Hazard LIM Terminal Board L1 L2 L3 Ground RS-232 Test Meter LIM Common 12V Common 12V Hazard 12V Safe K1 Safe K1 Common K1 Hazard To Ground Bus To Ground Bus To Ground Bus Primary Primary Circuit Breaker 120V Circuit Panel is field expandable to 16 secondary branch circuit breakers (QO220) Panel is field expandable to 2 secondary branch circuit breakers (QO) Courtesy of Steven Engineering, Inc.3 of NFPA99 2012 addresses Performance Criteria and Testing for Isolated Power Systems.00 102 4. Parallel leakage return paths will also bypass a portion of the leakage current from the patient.g. For more than 4 circuits, contact Schneider Electric Medical Products." Section 6. Like the mechanical interlock panel, this panel will serve various locations.25 83 4. Holes 1.00 203 40. Insist that any line isolation monitor installed in the facility have a UL component recognition under this standard. Reduced shock hazard 2. Verification that all applicable sections of code requirements are being met. Even in the most sophisticated operating rooms, the equipment load rarely exceeds 5 kVA.2. The ORICAC has a 2 mA milliammeter, while the ORICA5C has a 5 mA milliammeter. We are the first organization to offer online training for biomedical equipment maintenance technicians. This provides an additional layer of safety to protect both operators and patient alike. Dimensions Finished Floor 10. 99. panels were put aside in favor of the standard panels previously mentioned. Single Receptacle 20A Hospital Grade (4) Copper Ground Bus Bar (1) 1/8" Thick x 3/4" Wide Lug (1) For Line Isolation monitor testing and replacement services Inspection and Testing 2-Line Isolation monitor testing and replacement services Inspection and Testing 14 AWG 4. This gives the hospital personnel a choice of what to do since the equipment may be supporting the patient's life.38 86 1. When a Square D brand controlled power panel is used, locate it as centrally as possible in the area it will serve.2 � 106 Ohms I 50 � 10-6 C Line Isolation monitor testing and replacement services Inspection and Testing 1 Line Isolation monitor testing and replacement services Inspection and Testing 1 w. The situation has worsened over the years because of the increasing presence of electrical diagnostic and treatment equipment. The circuit is selected by means of a switch located in the receptacle module or at a push button station in the panel or located in a secure area. Electric Equipment Power Cord Grounding The green grounding conductor in an equipment power cord prevents static potentials from reaching dangerous values on noncurrent carrying parts such as housings, cases, and boxes of electrical appliances. Courtesy of Steven Engineering, Inc. Equipment that connects directly to patients should have its patient leads checked for leakage current. H2 H1 X2 X1 X Failures in the primary, which normally cause a dangerous secondary voltage condition, are shorted through the shield, thus activating the primary protective device. These are great devices and are highly recommended. Hospital Isolated Power Systems Overview and History 3 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved Overview This catalog has three purposes: Line Isolation monitor testing and replacement services To demonstrate to hospitals the need for isolated systems Line Isolation monitor testing and replacement services To guide the engineer in the application of hospital ungrounded systems Line Isolation monitor testing and replacement services To describe in detail the Square D� brand equipment used to design effective and economical isolated ungrounded systems Schneider Electric has been building isolating transformers for hospital use since the first equipment standards appeared in 1944. The acceptable protection is the same as that defined for NFPA No.00 330 12. 2. Devices with broken or damaged ground wires should be taken out of service and repaired. Digital Clock or Timer The Clock/Elapsed timers are complete microprocessor based units that display either time of day or elapsed time information.00 152 12. Once a ground fault is detected, the test pulse generated by the LIM2010 is scanned by the EDS491/EDS461 to locate a ground fault down to the load level. These two currents should be exactly identical, whatever they are.00 203 42.50 241 13.1 of NFPA99 2012 states "A record shall be maintained of the tests required by this chapter and associated repairs or modification. 99, which is included as a reference in Article 517.2(C) of NFPA99 2012 addresses isolated power with regard to Critical Care Areas and states "Where used in locations such as critical care areas, isolated power panels shall be permitted in those locations. The GFCI, if present, will also not make any disconnection because, up to this point, current is not making it out of the hot wire and not returning through the cold wire. This test can also be conducted with an 0�0. A push button station located in the panel controls the interlocking system. Current codes and standards for new construction of critical care areas require that no more than 40 mV exist between the reference point and exposed conductor surfaces in the patient's vicinity.00 178 27. System Design A. All of our service visits are documented in Hi-definition digital video, and provided to our clients online via this company extranet. Line Isolation monitor testing and replacement services Both analog and digital hazard current indication. Multiple LIM2010 devices may also be controlled by a single, intellgent remote station. Because of the PLC, multiple locations can be served at one time. Back Box The back box catalog number selections include: Flush back box Line Isolation monitor testing and replacement services Inspection and Testing DVBF Surface back box Line Isolation monitor testing and replacement services Inspection and Testing DVBS NOTE: Other receptacles are available. The Iso-Gard LIM is manufactured in the United States by Schneider Electric. For more than 8 circuits, contact Schneider Electric Medical Products. When manufacturers design and build complete systems, many factors are considered: proper and attractive packaging, convenient design, and ease of maintenance. This enables the engineer to perform maintenance more conveniently and efficiently. In extreme cases, it becomes impossible to use equipment such as an EEG without disconnecting the LIM. On the other hand, a leakage current of 10 to 180 ?A can injure the patient. For various safety reasons (there are advantages to grounded systems), one of the 2 wires supplying your outlet with power is connected to earth ground, via a grounded connection back at your service entrance box , somewhere in your house. This location must be designed to comply with NEC Article 501. We may now reduce our equivalent circuit as follows: Now we can calculate what happens should our 1000 Ohm person come into contact with either L1 or L2 ." Section 3. Normally the metallic case of appliances is connected to earth ground via the ground wire.2 of NFPA99 2012 states "The system shall be permitted to be installed where it conforms to the performance requirements specified in 6. If a hairdryer were connected to an ungrounded system, and developed a fault, the person touching the hairdryer might offer a low resistance alternative pathway and thus receive a shock, whereas if the hairdryer were grounded, most of the electricity would pass through the ground wire (although a small amount might pass through the individual) Primary vs. It is the purpose of this document to explain the other advantages that Isolated Power Systems offer. In the event of power outage, both clock and timer functions will continue to work for at least 24 hours. The fault impedance should be inserted directly into the LIM with all secondary wiring disconnected.00 305 72. We also offer many employment opportunities worldwide. H x 8 in. Locate an additional module behind the surgeon, near the head of the table.00 1880 1829 20.00 305 4.0 mA 0 0.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 16 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Grounding This figure compares the degree of interference produced by the Iso-Gard LIM with older LIMs.) L1 L2 L3 Ground RS-232 Test Meter LIM Common 12V Common 12V Hazard 12V Safe K1 Safe K1 Common K1 Hazard LIM Terminal Board Panel is field expandable to 16 secondary branch breakers (QO220). The location of this panel is important; correct placement will keep electrical and ground cords out of the traffic area. One of them is usually black, the other white. Kitchen Plumbing as a Ground Receptacle White Wire Black Wire Fixture Courtesy of Steven Engineering, Inc. Line Isolation monitor testing and replacement servicess from PG LIFELINK continuously monitor the Isolated Power System in the operating room and detects any faults immediately. No DIP switch configuration is required. Transformer Construction Receptacle Black Wire Core Steel Secondary Winding Primary Winding Isolating Transformer White Wire Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 30 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Isolation Panel Components Isolation Panel Components Square D brand hospital isolation panel components eliminate the difficulty in coordinating an effective isolated power distribution system for hospital anesthetizing locations and electrically susceptible patient areas. It is a common procedure to use a single isolated system to supply these circuits for more than one operating room. Leakage Currents Electric equipment operating in the patient vicinity, even though operating perfectly, may still be hazardous to the patient. Ground Jacks In previous codes, provisions for grounding conductive non-electrical devices were dictated. We have made these calculations first order, and as simple as possible so that only a basic knowledge of Ohm's Law is sufficient to understand the system concepts. The MARK V Line Isolation monitor testing and replacement services represents a giant leap for the isolated power industry.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 38 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Dual Output Voltage Isolation Panels Catalog Numbers To order dual output voltage hospital isolation panels, specify the correct catalog number for the following items: Line Isolation monitor testing and replacement services Interior Line Isolation monitor testing and replacement services Trim Line Isolation monitor testing and replacement services Transformer Line Isolation monitor testing and replacement services Back box NOTE: The interior, trim, transformer, back box, and optional panel mounted accessories for the LIM must be ordered separately.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 4 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Electrical Hazards In 1982, NFPA No. In the following example, we will use the configuration shown on page 22. This would increase system hazard current.00 381 3. By interconnecting all metal surfaces within the patient area, potential differences between the metal surfaces can be kept to a minimum. For proper continuity, test the ground system associated with the isolated power system before its initial use. This is extremely difficult to do since the availability of these wires differs from region to region. Line Isolation monitor testing and replacement services Combination 3-pole, 4-wire receptacle and indicator alarm module similar to the Square D brand X-Ray Indicator/Receptacle Module Line Isolation monitor testing and replacement services Inspection and Testing XR-IAI.0 1016 42. If one of its terminals touches the white conductor in the receptacle, nothing happens. by 8 in.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Remote Alarm Indicators 55 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved Wall-Mounted Indicators When the flow to ground is within the predetermined limits for the circuits being monitored, a constant green light remains illuminated. This 120 mA could prove extremely dangerous for our 1000 Ohm person. While these requirements are considerably reduced in the NEC and NFPA No." Section 6. Description Catalog Number Dimensions (in. RETROFIT packages are available for a fraction of the cost of a new installation! Line Isolation monitor testing and replacement servicess Isolated Power provides protection for both the patient and staff against electrical shock. Schneider Electric recommends that no more then four outlets (2 duplex receptacles) be fed from one circuit.0064 ohms/foot.1. Section 6. In an unshielded transformer, a potentially hazardous condition exists if the insulation between the primary and secondary fails for any reason.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system Hospital Isolated Power Systems Isolation Panel Components 31 04/2008 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved Individuals coming in contact with a secondary lead and ground would complete the circuit and current would flow through their bodies.) NOTE: This is not recommended on a grounded system! Schematic representation of an Isolated Power System B. The combination of these elements presents a challenge to increase electrical safety. Rather than use half the system capacity for the LIM, this unit reduces LIM contribution to less than 25Line Isolation monitor testing and replacement services Inspection and Testing of the system's capacity.2 � 106 C Line Isolation monitor testing and replacement services Inspection and Testing 2.00 406 16. Both sides are independently configurable. The duplex hospital isolation panel accommodates 16 branch circuit breakers for each of its two systems. The ground in this case is the kitchen plumbing fixture. Log voltage and millivolt readings for criteria for acceptability for new construction or existing rooms. 29-M1989. This is significantly better than the other brands on the market which sound between 4. The front trim is Line Isolation monitor testing and replacement services Inspection and Testing 304 stainless steel with a brushed finish, ensuring corrosion resistance and ease of cleaning. For isolation systems with a 120 V secondary, the hazard current limit is 600 ?A for the fixed wiring on the secondary of the isolation transformer.00 305 40. The operator can now choose to remove the equipment or continue to use it by taking extra caution that this may cause a serious hazard to the patient or operator should either come into contact with the other line conductor.0 1016 (4) . XRM Series-X-Ray/Laser Receptacle Modules Used in conjunction with circuit-controlling isolated power panels, XRM series modules provide a convenient source of power for portable x-ray and laser equipment. 99, which was updated in 1984, 1987, 1990, 1993, 1996, and 1999, and in Chapter 4, which was updated in 2002.00 1245 51. The section is field expandable to 16 branch circuit breakers by ordering additional circuit breakers, Schneider Electric catalog no. This is because every piece of electrical equipment produces a leakage current. If the drill is in good repair and the enclosure is properly grounded through the power plug, the procedure is safe.0 127 29. The 5 in. The M5IAI50 is a smaller version. The only indicator alarm operating is the energized circuit. Pressing the silencing switch disconnects the audible signal. In the past, most equipment operated on 60 A circuits.0 mA. The consulting electrical engineer must be the nucleus of the team that makes the decisions. 99, anesthetizing locations are classified as: Line Isolation monitor testing and replacement services Hazardous locations which use flammable anesthetics.6. The calculated resistance should be below 0. However, each team member contributes vital information to the system design. 99. To conduct this test, place a 0�1 milliammeter between either line to ground and measure the current. Electrostatic Shield Main Circuit Breaker Customer Load Connections Pri.5 120 208 240 277 480 120 80A 45A 40A 35A 20A 8-20A IC29510 53029BB 53037BB 7XR11 7XR21 7XR31 7XR41 7XR51 10H5S11CDDI 10H5S21CDDI 10H5S31CDDI 10H5S41CDDI 10H5S51CDDI 10 120 208 240 277 480 120 100A 60A 60A 45A 30A 8-20A IC29510 53029BB 53037BB 10XR11 10XR21 10XR31 10XR41 10XR51 Courtesy of Steven Engineering, Inc. General Application Criteria A.00 1880 32. Whether snap-in or bolt-on breakers are used, it is extremely important that the dead front for the panel be properly installed. The leakage consists of any current, including capacitively coupled current, not intended to be applied to a patient, but which may pass from exposed metal parts of an appliance to ground or to other accessible parts of an appliance. Ten secondary circuit breakers are recommended for the panel in this example.98 177 Clock Display Timer MCT12B Dual Dimensions: Inches mm 3. Push button control can be substituted for the switch in the receptacle module.2. The information contained here regarding codes and standards is current as of this writing. When designing the modules that make up its systems, the Schneider Electric engineering department considered every important requirement for isolated systems.3. This static charge could be a hazard to the patient and attendant if it ignited some flammable gas or material, or if it discharged to the patient as a shock.4. Transformers All transformers for the dual output voltage isolation panels are single-phase only. Energize the isolation panel by closing the primary circuit breaker. In addition to biomedical engineering and equipment maintenance services, BiomedRx now offers testing and certification of isolated power systems and line isolation monitors.0 127 29. NOTE: Should our person have a reduced ohmic resistance, due to excessive moisture or internal body connections, we could expect potentially lethal current to flow.00 406 Primary Breaker 1. When specifying a surgical facility panel, consider which location is best for all concerned personnel. The maintenance program should apply to all patient care areas; but it is of greatest importance for special care units where the most seriously ill patients and the most complex equipment co-exist.) Trim Backbox HWHWD Dual Display Clock/Timer1 1 MCTS-95135 trim and 53007BB backbox must be ordered when installing clock/timers in building walls Clock/Timer with separate displays MCT12B 4.50 419 13. The Square D brand remote alarms for the Iso-Gard LIM operate at 12 Vac and do not add any additional hazard current to the isolated power system being monitored. Under continuous full load and normal hospital ambient conditions, the front trim panel's total temperature will be no greater than 50 �C.2. If no receptacle is selected, the section is field expandable to two branch circuit breakers by ordering Schneider Electric catalog no. The Iso-Gard LIM, with its microprocessor-based technology, is impervious to all types of electrical noise interference found in hospital operating rooms. IPS with our grounded 1000 Ohm person in contact with the line conductor in each system. Your analog line isolation monitor requires monthly testing. This commonly results from using two-prong plugs and receptacles, improper use of adapters, use of two-wire extension cords, and the use of damaged electrical cords or plugs. NFPA No." Ungrounded System To convert available power from a receptacle into an ungrounded service is possible. 56. Corrective steps are taken if improper operation is observed. In addition, connect a minimum Line Isolation monitor testing and replacement services Inspection and Testing 10 AWG ground wire between the controlled power panel and the equipment receptacle.0 1067 12. should be demanded for use in 120 V, 208 V, and 240 V applications. Upon completion of testing, a technician shall meet with hospital medical and maintenance staff to explain the operation of isolated power systems; explain alarm procedures and answer any questions. The cord's overall diameter is 5/16 in. Holes Top and Bottom 20. In three-phase systems, the third conductor shall be color-coded yellow. Line Isolation monitor testing and replacement services Hazard current alarm levels of 2. However, Schneider Electric limits the temperature rise of the isolation transformer to 80 �C maximum, further ensuring system reliability on all standard transformers. Long C-25 Clip with Slip-On Insulator Furnished P753N Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc. This can be done by connecting two to four receptacles to one circuit breaker. The yellow indicator illuminates, reminding personnel that the audible signal is disconnected. On the other hand, Line Isolation monitor testing and replacement services Inspection and Testing 10 AWG only represents 0. Only the accessories are optional. Contact Medical Products Marketing when multiple secondary circuits are necessary or for the availability of UL Listing. Courtesy of Steven Engineering, Inc. Features Features of the duplex hospital isolation panel include: Line Isolation monitor testing and replacement services Two complete isolated power systems in one enclosure. The components in an isolated power system can be purchased separately; however, it is much easier and makes more sense to purchase a complete system. All features, as well as device setup, are carried out on the connected MK1554 chronometer remote. The conclusion from the previous paragraph is that current flows from the black wire to any grounded conductive surface, of which there are many.00 610 (4) . Since they are digital, they instantly reset, which eliminates annoying time delays for mechanical resets. The design prevents accidental entry into the transformer section when operating the circuit breakers or LIM test circuit.00 381 32. Each remote indicator is powered directly by the LIM2010 line isolation monitor, located at the isolated power panel. These combined annunciator panel units meet this need.00 1067 20.5 38 27. Long Line Isolation monitor testing and replacement services Inspection and Testing 10 Super Flex RC 600V Cable 15 Ft. Contact Schneider Electric Medical Products for more information. NFPA-99 requires yearly testing of Isolated Power Panels. Surgical facility panels are custom designed and assembled; this allows each hospital to specify the individual components needed in that hospital. The MK series LIM remote indicator may also be built into the module for displaying the status of the connected LIM.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-Isolated Power system 64 Isolated Power System Inspection and Testing 1998�2008 Schneider Electric All Rights Reserved 04/2008 Hospital Isolated Power Systems Digital Clocks, Timers, and Accessories Dual Display Clock/Timer (MCT12B) This dual display timepiece is designed for surgical or patient care areas where simultaneous clock/timer displays are needed. The unit is available in 5 or 10 kVA ratings and includes a stainless steel cover.2.4.00 254 7. Line Isolation monitor testing and replacement services All medical equipment must be defined and inventoried. 14 ga. This insulation system allows, by NEMA�ANSI standards, a temperature rise of 150 �C above a 40 �C ambient. RA1WM The RA1WM consists of the RA1 remote alarm indicator and a stainless steel, decorator-style cover plate.).50 89 15.6. This means, for a piece of electrical equipment using a Line Isolation monitor testing and replacement services Inspection and Testing 18 AWG ground wire in a 15-ft power cord, no more than 416 mA of fault current could develop without exceeding the 40 mV potential difference requirement.0 5. The table below shows the approximate expected hazard currents per foot of power conductor, using the various wiring schemes described in the preceding paragraphs.00 178 15. Figure 2: The LIM2010 line isolation monitor in the alarm condition The LIM2010 clearly displays the total hazard current on the face of the panel, as well as providing an audible alarm.0 305 (4) . The LIM2010 is intended for use as part of an isolated power system that conforms with the applicable requirements of ANSI/NFPA 99, ANSI/NFPA 70, and CAN/CSA-C22. A risk assessment by the health care governing body can in fact deem an operating room not to be a wet procedure location. For facilities with limited equipment, a contactor control panel can be designed to fit individual needs. Secondary Wiring Primary wiring in an operating room (from the main alternating current power supply) is normally grounded. All hospitals should have copies of the current standards for reference; the design engineer must have this information available. 29-M1989." Section 6.00 813 14. Square D brand isolation power panels use the QO snap-in breaker as standard.25 57 Lug Furnished Ground Plug Rubber Handle Ground Plug Rubber Handle P751N P753N Line Isolation monitor testing and replacement services Inspection and Testing 10 RC 600V Cable 15 Ft. The transformer will thus be designed to operate at a relatively cool normal temperature, but will still be able to handle future demands which exceed today's norm. Annunciator Panel for 5 to 8 Circuits This unit is available either surface or flush-mounted for use with a total quantity of 5 to 8 circuits.3.00 102 MCT4RC Dual Dimensions: Inches mm Courtesy of Steven Engineering, Inc. UPDATE your Isolated Power Panels with NEW TECHNOLOGY! Improve your Operating Room performance with the NEW Mark V LIM from PG LIFELINK. The size of the hospital, presence of other hospitals in the area, and regional demographics will help each hospital make the appropriate decisions about testing personnel. The electrical portion of the motor must be completely insulated from the conductive enclosure. However, if that ground wire is broken, the case will become "hot" and the circuit breaker will not blow.0 127 29. Line Isolation monitor testing and replacement services Ability to provide both critical service and normal service power from one isolation panel. Interior Trim Catalog Number Back Box Transformer Catalog Number Interior Catalog Number kVA Primary Voltage Secondary Voltage Primary Circuit Breaker Secondary Circuit Breaker Flush Catalog Number Surface Catalog Number 15H5S22PLCIR 15 208 208 90A 8�20, 30 or 60 A Secondary Circuit Breaker or a combination thereof.18 208 3. This unit can connect to that point by a single conductor. This includes standing fluids on the floor or drenching of the work area, either of which condition is intimate to the patient or staff. If no receptacle is selected, the section is field expandable to two branch circuit breakers by ordering additional circuit breakers, Schneider Electric catalog no.437 Diameter Mounting Holes 11 30.00 838 Optional Accessories Circuit Breaker Panel Line Isolation monitor testing and replacement services Hinged Door with Lock and Key 14 Gauge Stainless Steel Transformer (4) .00 305 6.00 508 6. C. In a room powered by an Isolated Power System, you can stand with bare feet on a wet floor and touch an outlet wire with little chance of being harmed.1 states "The Health Care Facilities shall provide programs of continuing education for its personnel. A 2 mA meter is available for either style by changing the "M5" in the catalog number to "MM. Holes Selector Switch 14 ga. UPDATE your Isolated Power Panels with NEW TECHNOLOGY! Improve your Operating Room performance with the NEW Mark V LIM from PG LIFELINK. Square D brand isolation panels use a non-ventilated enclosure for most panel designs. Line Isolation monitor testing and replacement services Stainless steel trim with lockable door to restrict unauthorized access to circuit breakers and line isolation monitors. Article 517-20(a) of the 1993 National Electrical Code states that 15 and 20 ampere, 125 Volt, single phase receptacles supplying wet locations shall be provided with ground fault circuit interrupters if interruption of power under fault conditions can be tolerated, or an isolated power system, if such interruption cannot be tolerated. Medical Equipment Maintenance The increased use of biomedical instruments presents another maintenance responsibility. Interior Code Numbers (1) (2) (3) (4) (5) (6) (7) (8) Interior Catalog Number DVP 2 B 7 6 6 R X D 208/240 V Receptacle Line Isolation monitor testing and replacement services Inspection and Testing 2 is NEMA Type 6 � 50R 208/240 V Receptacle Line Isolation monitor testing and replacement services Inspection and Testing 1 is Hubbell IN16494 120 V Receptacles Colored Red Six 120 V Receptacles Six 30A Green Ground Jacks Size Rating of 120 V Transformer Secondary is 7.5 4. Current codes and standards require that all conductive surfaces within the patient vicinity must be properly grounded