Electricity: electrical systems and devices – Safety and protection of systems and devices – Ground fault protection
Patent
1981-11-13
1983-08-09
Moose, Jr., Harry E.
Electricity: electrical systems and devices
Safety and protection of systems and devices
Ground fault protection
324 51, 361 79, H02H 316
Patent
active
043982328
ABSTRACT:
Methods and apparatus for detecting a single-phase-to-ground fault on a three-phase electrical power system, and for identifying a faulted phase. A single-phase-to-ground fault is correctly distinguished from other faults, including phase-to-phase-to-ground faults, even with transmission lines which utilize series capacitors, by taking into consideration the phase-to-phase voltage which is in quadrature with the voltage to ground of the monitored phase.
REFERENCES:
patent: 4146913 (1979-03-01), Sun
Lackey D. R.
Moose Jr. Harry E.
Westinghouse Electric Corp.
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