Automatic or manual circuit restoration apparatus after a prescr

Details Automatic or manual circuit restoration apparatus after a prescr Automatic or manual circuit restoration apparatus after a prescr

1989-11-22

1992-03-17

DeBoer, Todd E.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific voltage responsive fault sensor

361 59, 361 75, 361 86, H02H 324

Patent

active

050973797

ABSTRACT:
A circuit is provided which responds to single or multiphase low or lost voltage situations and in the case of multiphase systems to phase reversals or shifts to disconnect a single or multiphase load from its source. A timing circuit is provided which prevents reactivation of the load until a prescribed time interval has elapsed. The reactivation may be either automatic or manual.

REFERENCES:
patent: 3541392 (1970-11-01), Vargo et al.
patent: 3809963 (1974-05-01), Hutchinson
patent: 3940664 (1976-02-01), Matsko
patent: 4011484 (1977-03-01), Paice et al.
patent: 4333119 (1982-06-01), Schoenmeyr
patent: 4538197 (1985-08-01), Breen
patent: 4644438 (1987-02-01), Puccinelli et al.
patent: 4680706 (1987-07-01), Bray
patent: 4698718 (1987-10-01), Chow et al.

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