Electricity: electrical systems and devices – Safety and protection of systems and devices – Ground fault protection
Patent
1979-03-26
1980-11-11
Moose, Jr., Harry E.
Electricity: electrical systems and devices
Safety and protection of systems and devices
Ground fault protection
361 46, H02H 3347
Patent
active
042336392
ABSTRACT:
A ground fault circuit interrupting (GFCI) device is utilized to control either an industrial circuit breaker or a contactor in protecting a large power distribution circuit against ground faults. The GFCI device is equipped with switch contacts which are actuated incident with tripping of the GFCI device. The switch contacts control energization of an actuator adapted to the circuit breaker or contactor. A ground fault sensor responds to ground faults on the distribution circuit by injecting a current imbalancing signal into the GFCI device, causing it to trip. The consequent switch contact actuation initiates operation of the circuit breaker or contactor to interrupt the distribution circuit.
REFERENCES:
patent: 3787708 (1974-01-01), Hobson, Jr.
patent: 3789268 (1974-01-01), Klein
patent: 4044395 (1977-08-01), Eckart
patent: 4156884 (1979-05-01), Eckart et al.
Eckart Gregory C.
Klein Keith W.
Palmieri Joseph M.
Bernkopf Walter C.
Cahill Robert A.
General Electric Company
Moose Jr. Harry E.
Schlamp Philip L.
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