Fail safe ground fault circuit

Details Fail safe ground fault circuit Fail safe ground fault circuit

H - Electricity

01

H

H01H 83/02 (2006.01) H02H 9/08 (2006.01) H02H 3/05 (2006.01)

Patent

CA 2317782

A ground fault circuit for a poly-phase circuit is disclosed. The ground fault circuit provides a plurality of current limiting impedance paths from a neutral of the poly-phase circuit to ground. A sensing circuit monitors the paths and may indicate failure of one of the paths. The sensing circuit, may, for example sense the net impedance of the plurality of paths and note an alarm in the event of an increased or decreased impedance, indicative of an open or short circuit along either path.

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