Ground-fault detection system

Details Ground-fault detection system Ground-fault detection system

1975-04-22

1976-06-15

Moose, Harry

317 27R, H02H 328

Patent

active

039639630

ABSTRACT:
A neutral ground fault detector couples oscillations from a local oscillator into the neutral conductor of an electric power transmission system whenever a ground-fault appears thereon. Oscillations appearing on the neutral conductor during ground-fault conditions are synchronously detected by homodyning them with oscillations obtained directly from the local oscillator, thereby to otain a direct-current indication of the ground fault on the neutral conductor.

REFERENCES:
patent: 3597656 (1971-08-01), Douglas
patent: 3611035 (1971-10-01), Douglas
patent: 3857069 (1974-12-01), Howell

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