FIELD: instrumentation.
SUBSTANCE: proposed device comprises solenoid relay and rectifier diodes, their number corresponding to that of circuit phases and their cathodes being integrated and connected to dynistor anode. Besides, it incorporates extra relay. Note here that one control coil output lead is connected to controlled circuit phase while second output lead is connected to rectifier diode anode. Dynistor cathode is connected to chassis.
EFFECT: detecting phase with decreased insulance or complete phase earthing to chassis.
1 dwg
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