Electricity: electrical systems and devices – Safety and protection of systems and devices – Ground fault protection
Patent
1981-05-04
1982-08-17
Salce, Patrick R.
Electricity: electrical systems and devices
Safety and protection of systems and devices
Ground fault protection
361113, H02H 333
Patent
active
043452892
ABSTRACT:
A fault signal integrating capacitor and a comparator responsive to an integrated fault signal voltage are connected in feedback circuit fashion such as to provide for the generation of a succession of thyristor gate triggering pulses to insure reliable current activation of a trip solenoid acting to effect separation of circuit interrupting contacts.
REFERENCES:
patent: 2953738 (1960-09-01), Bright
patent: 3852642 (1974-12-01), Engel
patent: 3973171 (1976-08-01), Howell
patent: 4180841 (1979-12-01), Engel
patent: 4216516 (1980-08-01), Howell
patent: 4290004 (1981-09-01), Smith
Bernkopf Walter C.
General Electric Company
Jacob Fred
Menelly Richard A.
Salce Patrick R.
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