Electrical safety costs little ... ... a human life is priceless

Electrical safety in hospitals is vital The benefits offered by modern medical knowledge and technical equipment are overruled by unexpected loss of electrical power. In certain medical rooms like ICU, OT, time is of the essence and the absolute reliability of electrical systems is of vital importance. Safe and secure electrical power systems Bender systems have provided the answer for reliable and cost effective electrical safety solutions for healthcare facilities for over 70 years. Hospitals around the world rely on Bender products and the technical sup­ ort of Bender engineers, where p m...

Bender - Electrical safety in hospitals Bender: your partner in the application of the new l Five most important topics concerning A. Which power supply system ensures maximum safety ? The highest demands are made in Group 2 B. How do you avoid dangerous overloads ? C. How do you inform your staff ? D. How do you avoid dangers in case of public electricity supply failure? E. What else can you do for increased safety ? Insulation fault location in IT systems with the EDS461 TN-S systems: advance information with RCM and RCMS 14 Alarm and control panels 30 IT System Distribution Boards Insulation...

We want to inform you about the five most important topics concerning electrical safety in healthcare facilities as follows: A Which power supply system ensures maximum safety? B How do you avoid dangerous overloads? C How do you inform your staff? D How do you avoid dangers in case of public electricity supply failure? E What else can you do for increased safety?

Which power supply system ensures maximum safety? Safety standards in medical locations According to IEC 60364-7-710: 2002-11, the medical procedures carried out in a room, define the group classifications of medical locations. 710.3.5 Group 0 M edical locations where no applied parts are intended to be used. 710.3.6 Group 1 Medical locations where applied parts are intended to be used, as follows: ■■ Externally I nvasively to any part of the body, but not to the heart, except where 710.3.7 applies. The highest demands are made in Group 2 medical locations A first fault must not result in power...

IT systems (unearthed systems) – for a reliable power supply The IT system in medical locations The use of an IT system is the backbone of a reliable power supply c in medi­ al locations. Contrary to an earthed system (TN system) d there is no con­ uctive connection between active conductors and the protective earth­ng conductor within the IT system. i Special brochure for: NEC/NFPA/UL/CSA/JES/AS Thus four essential demands are met: W hen a first insulation fault occurs the power supply is not interrupted by the tripping of a protective device. Medical electrical equipment continues to function....

I nsulation monitoring – safety plus thanks to advance information The medical IT system consists of an isolating transformer, a monitoring device to monitor the insulation resistance, transformer load and temperature and a remote alarm indicator and test combination, installed in the operating theatre or at a manned nurse station nearby. Continuous insulation monitoring (IEC 60364-7-710: 2002-11, section 413.1.5) ensures that a deterioration in insulation resistance is immediately detected and signalled but (this is the decisive factor) there is no power supply interruption and continuity of...

H ow do you avoid dangerous overloads? Load and temperature monitoring The load an IT system transformer can put at the user’s disposal is not endless. Therefore monitoring of overload and transformer temperature according to IEC 60364-7-710 2002-11, section 413.1.5 is required. ■■ easurement and indication of excessive heating of the M transformer sensed by PTC resistors. [>°C] ■■ M easuring and recording of the load current sensed via measuring current transformers. [>A] In the main feeder of the IT system trans­ ormer, overcurrent f protective devices are only used for protection against shortcircuits,...

How do you inform your staff? Continuous information about the status of the electrical installation is vital where reliability of supply is of paramount importance. Remote alarm indicator and test combination MK series The remote alarm indicator and test combinations of the MK series meet the requirements of IEC 60364-7-710: 2002-11, section 413.1.5, for modern information and communication systems in hospitals in various ways. Installed in medical locations, the MK series provides audible and visual signals, to immediately inform the staff. The MK2430 contains a seven-seg­ ent-display to indicate...

How do you avoid dangers in case of public electricity supply failure? Due to the vital importance of electrical safety in hospitals, healthcare facilities mostly have at least two independent c sources of power supply at their disposal (e. g. public electri­ ity supply, generators, UPS). In this way, power failures of the public electricity supply do not lead to a failure of medical electrical equipment that exposes patients to danger. According to IEC 60364-7-710: 2002-11, section 313, in medical c t lo­ a­ ions, the distribution system should be designed and installed to facilitate the automatic...

D Three supply options for IT systems: IT system with one supply cables IT system with two supply cables IT system with two supply cables and a special safety power supply source 1. One supply cable The IT system is supplied by only one supply cable. If the supply cable is interrupted, a complete power failure is tolerated. (This system is not permitted in Ger­ any and Austria). m 2. Two supply cables The IT system is supplied by two supply cables. In the event the first cable fails, automatic transfer to the second cable, takes place. 3. wo supply cables but with a safety T power source The...

What else can you do for increased safety? Insulation fault location for critical rooms Insulation fault location in IT systems with the EDS151 system In medical locations, IT systems with l insu­ation monitoring are intended to supply medical electrical equipment. That ensures reliable power supply, even when a first fault occurs. In addition a fast location and elimination of the insulation fault is required. Particularly in the view of the variety of elec­ rical equipment (e. g. socket outlet t circuits) used in intensive care units, insulation fault location is disruptive and costly in terms...