Ground-fault detection system

Details Ground-fault detection system Ground-fault detection system

G - Physics

01

R

324/58.03

G01R 31/02 (2006.01) G01R 31/08 (2006.01) H02H 3/33 (2006.01)

Patent

CA 1056916

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 obtain a direct-current indication of the ground fault on the neutral conductor.

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