Corded leakage-current detection and interruption apparatus

Details Corded leakage-current detection and interruption apparatus Corded leakage-current detection and interruption apparatus

H - Electricity

01

H

H01H 83/00 (2006.01) G01R 31/02 (2006.01) H01H 83/02 (2006.01) F24F 11/00 (2006.01)

Patent

CA 2536648

A leakage-current detection and interruption apparatus includes a plug adapted to receive an alternating current voltage, pairs of separable contacts adapted to receive the AC voltage from the plug, and an operating mechanism adapted to open and close the contacts. A power cord includes line and neutral power conductors adapted to conduct the AC voltage from the contacts to the load, a ground conductor, and two non-load carrying, non-ground conductors. One or both of the conductors do not shield one or both of the power conductors. A detection circuit is adapted to detect cord faults. The detection circuit includes a ground fault detection circuit having a current transformer with an opening through which the power conductors pass. The ground fault detection circuit cooperates with the non-load carrying, non-ground conductors to detect one or more of the cord faults and with the operating mechanism to interrupt the detected faults.

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