Ground fault detecting device for use with a DC circuit

Details Ground fault detecting device for use with a DC circuit Ground fault detecting device for use with a DC circuit

1982-02-24

1984-02-07

Moose, Jr., Harry E.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Ground fault protection

361 49, H02H 316

Patent

active

044306830

ABSTRACT:
A ground detecting device for detecting a ground fault in a DC circuit, through which a DC power produced by converting a poly-phase AC power by an AC-DC converter is transmitted and which is connected at an earth point to the earth, is arranged to detect an earth current flowing through the earth point and extract a DC component, if any, from the detected earth current and to judge whether a ground fault has occurred or not by comparing the level of the DC component with a predetermined reference level.

REFERENCES:
patent: 3609534 (1971-09-01), Gurevich

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