Electricity: electrical systems and devices – Safety and protection of systems and devices – Ground fault protection
Reexamination Certificate
2007-11-27
2007-11-27
Sherry, Michael (Department: 2836)
Electricity: electrical systems and devices
Safety and protection of systems and devices
Ground fault protection
Reexamination Certificate
active
11250115
ABSTRACT:
A ground-fault circuit-interrupter method and system for three-phase electrical power systems including a plurality of GFCI units and a processor forming a ground-fault circuit interrupting system for use in a three-phase power distribution network including a three-phase source of electrical power, a three- or four-wire main circuit, and a plurality of three- or four-wire feeder circuits connected across the main circuit. A GFCI unit is provided in the main circuit and in each of the feeder circuits. The processor is programmed to continuously monitor the main GFCI unit and each feeder GFCI unit to determine when and where a fault has occurred and, in response thereto, to interrupt the faulted circuit and to inhibit tripping of the non-faulted circuits. The novel GFCI system is applicable for solidly-grounded, resistance-grounded, or ungrounded as well as other three-phase systems.
REFERENCES:
patent: 3840783 (1974-10-01), Eckart
patent: 4138707 (1979-02-01), Gross
patent: 4156884 (1979-05-01), Eckart et al.
patent: 4205358 (1980-05-01), Washington
patent: RE30304 (1980-06-01), Eckart
patent: 4685022 (1987-08-01), Nichols, III et al.
patent: 5629825 (1997-05-01), Wallis et al.
patent: 5786971 (1998-07-01), Chan et al.
patent: 5793587 (1998-08-01), Boteler
patent: 6459269 (2002-10-01), Jones
patent: 6671150 (2003-12-01), Elms et al.
patent: 6731482 (2004-05-01), Juncu
patent: 7117105 (2006-10-01), Premerlani et al.
patent: 7180300 (2007-02-01), Premeriani et al.
Bender Product Brochure “Ground Fault Location in AC & DC Systems Made Easy with Bender Eds and RCMS systems”, no date avalable.
Benenson Boris
Buchanan & Ingersoll & Rooney PC
Chevron U.S.A. Inc.
Sherry Michael
LandOfFree
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