Changeover and monitoring moduleUFC107E

Changeover and monitoring module with single fault tolerance for medical IT systems featuring a built-in insulation fault location system Further measures to increase the electrical safety • Continuous functional monitoring of the actuation devices and automatic processes (coil, control contacts, connections)• Monitoring of essential connecting leads such as to– current transformers – transformer temperature sensorsMonitoring for short-circuits upstream and at the output of the changeover device and the pre-defined switching behaviour. Functions in accordance with IEC 60364-7-710 / DIN VDE 0100-710 (VDE 0100-710) Product description • Voltage monitoring with control function– on the preferred supply (Line 1) – on the second supply (Line 2) – at the output of the changeover module (Line 3) • Variable changeover period t ≤ 0.5…20 s • Protection against wrong operation by multiple interlocking • Cables laid to resist short-circuits and earth faults • Control circuit with single fault tolerance • Automatic return on recovery of the voltage • Functional testing including checking of the operating times • Insulation, load current and temperature monitoring for IT systems in group 2 medical locations• Monitoring of the system/PE connections of the insulation monitoring device The factory-made modules of the UFC107E series are used to change over (t ≤ 0.5 s) between two supply sources (AV/SV resp. SV/UPS) and for IT system monitoring in medical locations. The UFC107E features an insulation fault location system to localize insulation faults in 6, 12, 18 or 24 outgoing circuits during operation. Each outgoing circuit has a two-pole circuit breaker. Status indication and alarm texts on the alarm indicator and operator units takes place via bus technology. The module is suitable for mounting onto all common DIN rail systems (equipment racks have to be provided by the customer). Single fault tolerance The changeover modules continuously monitor the functions and in this way ensure that an individual, foreseeable error cannot lead to a failure of the power supply specification at the output of the automatic changeover and monitoring module: (DIN VDE 0100-710: 2002-11 para. 710.521.6 control circuits). Indications/messages • Plain text messages display for all essential operating, fault and alarm messages • Information exchange between alarm indicator and operator units via BMS bus • Common alarm contact with protective separation in accordance with EN 50178 for insulation fault location systems Description of the changeover function In fault-free condition, the preferred supply line is switched on. If the voltage drops below the set response value, changeover to the second supply will automatically take place. The changeover period can be set individually. In order to ensure operational readiness, the second line as well as the output of the changeover module (Line 3) are monitored too. On voltage recovery, return to the preferred supply line occurs automatically. Owing to variable delay times (return transfer time or delay time), the UFC module meets the individual installation-specific requirements (e.g. coordination of several changeover modules, reduction of switching energy). The function of the changeover module can be tested via the test button.
2.2 UFC107E – Typical example Device features • Complete solution for changeover, IT system monitoring and insulation fault location• Factory-made, tested module for installation that saves both time and costs• Variable changeover period t ≤ 0.5…20 s • Concise IT system monitoring (insulation, load, transformer temperature)• Insulation fault location during operation • Fast localization of faulty subcircuits • Insulation fault location system for 6…24 subcircuits• Two-pole professional circuit breakers for each subcircuit • Suitable for all common DIN rail systems • Screwless-type connection technique • Bus technology for easy installation and reduced fire load • Clear menu structure with LC display allows easy parameter setting• Power supply for MK2430/MK800
40 Main catalogue part 2 – 05.2008/Hospital engineering