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Electrical protective device for electro-medical appts. - contains isolation transformer and resistive insulation monitor with safety switching
Electrical protective device for electro-medical appts. - contains isolation transformer and resistive insulation monitor with safety switching
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机译:电子医疗设备的电气保护装置。 -包含隔离变压器和带安全开关的电阻绝缘监控器
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摘要
The device for protecting against contact currents consists of an isolation transformer (TR) and an insulation monitor (IU). The protected person (P) is connected via a resistor (R3) to the centre tapping of a potential divider (R1,R2) which is connected to the transformer secondary. A current change in the three resistors caused by a single or double insulation failure triggers a warning signal and/or the switching off of the device and/or the activation of a redundant protection device. ADVANTAGE - Ensures safe operation of one or more electrical devices irrespective of local safety measures and ambient conditions.
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