FIELD: electricity.
SUBSTANCE: device for control of isolation of electrical supply system with isolated neutral contains high-voltage connecting wires, a contactor of the measuring circuit, and a ground contactor. In parallel to the contacts of the grounding contactor, a diode bridge with a search current modulator is connected. This provides the possibility of connecting the electricity network phase through a commutation switch, current limiting capacitor, contactor contact of the measuring circuit and contact of grounding contactor to the contour of the ground.
EFFECT: implementation of selective control of leakage or phase-to-ground closure in a branched power supply system with isolated neutral, identification of an element with damaged insulation prior to emergence of an emergency mode.
2 cl, 2 dwg
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