H - Electricity – 02 – H
Patent
H - Electricity
02
H
H02H 3/16 (2006.01) H02H 3/33 (2006.01) H02H 1/04 (2006.01) H02H 1/06 (2006.01) H02H 3/00 (2006.01) H02H 3/347 (2006.01)
Patent
CA 2093061
A leakage current protection device, such as a ground fault circuit interrupter (GFCI), is provided that can be used in single phase or polyphase systems, with a range of input voltages from 70 to 264 volts AC, frequencies of 50 or 60 hertz, and ground fault trip currents of 6 to 30 milliamperes. A leading power factor circuit is connected to the secondary winding of the GFCI differential transformer to permit the magnetic circuit to respond to pulsating DC signals. Provision is made for continuing to provide GFCI protection in the event of an open neutral lead, with a timing circuit to prevent current flow to the ground lead until current flow in the neutral lead is completely discontinued. Various types of circuit interrupting devices, such as a circuit breaker or a power converter, may be selectively utilized.
Finlayson & Singlehurst
Technology Research Corporation
LandOfFree
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