Electricity: electrical systems and devices – Safety and protection of systems and devices – Automatic reclosing
Patent
1985-03-14
1990-06-05
Envall, Jr., Roy N.
Electricity: electrical systems and devices
Safety and protection of systems and devices
Automatic reclosing
361 96, H02H 722
Patent
active
049318969
ABSTRACT:
A distribution line switchgear control which is particularly suitable for use with recloser switchgear which requires small amounts of power from the control for operation. The control is most usefully powered for continued operation by small amounts of line current provided through a power source current transformer and includes multiple capacitors which are arranged in a cascaded control power supply having a plurality of isolated stages. The line current is precisely monitored through current transformers by the control which causes the recloser to trip, reclose and lockout, as is appropriate to protect the distribution line and distribution electricity. Inhibit means prevent the control from issuing a trip signal, unless sufficient energy exists in a trip portion of the cascaded power supply. A variety of volatile timers and counters enable the control to cause the recloser to trip, reclose and lockout. Initialization means, sensing the cascaded power supply, and a non-volatile state memory responsive to trip, close and lockout signals of the control, cause the initialization of the volatile and non-volatile elements to prevent inappropriate control signals.
REFERENCES:
patent: 3116439 (1963-12-01), Riebs
patent: 3381176 (1968-04-01), Riebs
patent: 3405318 (1968-10-01), Gilker
patent: 3412289 (1968-11-01), Gilker
patent: 3604983 (1971-09-01), Levin et al.
patent: 3662220 (1972-05-01), Riebs
patent: 3878436 (1975-04-01), Bogel
patent: 4000446 (1976-12-01), Vandevier et al.
patent: 4027203 (1977-05-01), Moran et al.
patent: 4103316 (1978-07-01), Kaneko
patent: 4131929 (1978-12-01), Moran
patent: 4161761 (1979-07-01), Moran
patent: 4223365 (1980-09-01), Moran
patent: 4250532 (1981-02-01), Dais
patent: 4293834 (1981-10-01), Date etal.
patent: 4345292 (1982-09-01), Jaeschke et al.
patent: 4352138 (1982-09-01), Gilker
patent: 4393431 (1983-07-01), Gilker
patent: 4428022 (1984-01-01), Engel et al.
patent: 4562506 (1985-12-01), Moran
Information of Togami Automatic Sectionalizer, "DM System", Togami Electric Mgs. Co., date unknown.
IC OP AMP Cookbook, Jung, Figures 5-9, 5-13, 1974.
McGraw-Edison Service Publications, KFE 10,001-E, KFE 10,002-E, May 1983.
Blish Nelson A.
Cooper Industries Inc.
Cox Hubert E.
Envall Jr. Roy N.
Scott Eddie E.
LandOfFree
Distribution line switchgear control with isolated cascaded powe does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Distribution line switchgear control with isolated cascaded powe, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Distribution line switchgear control with isolated cascaded powe will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-495881