Ground fault electrical switching apparatus for coordinating...

Details Ground fault electrical switching apparatus for coordinating... Ground fault electrical switching apparatus for coordinating...

H - Electricity

02

H

H02H 3/16 (2006.01) H02H 7/30 (2006.01) H02H 3/33 (2006.01)

Patent

CA 2260525

A ground fault circuit breaker includes separable contacts for interrupting current flow in a protected AC electric system when opened. The protected AC electric system includes a ground fault switch, such as a ground fault receptacle having a people protection ground fault trip curve, downstream from the ground fault circuit breaker. A current transformer generates an AC sensor signal representative of AC current flowing from the protected AC electric system to ground. A ground fault controller, connected to the current transformer, generates a ground fault trip signal as a function of the AC sensor signal and an equipment protection ground fault trip curve. A trip means, which is responsive to the ground fault trip signal, opens the separable contacts.

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