Open circuit detector

Details Open circuit detector Open circuit detector

1975-12-08

1977-05-10

Duggan, Donovan F.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Ground fault protection

3072021, H02H 316

Patent

active

040230732

ABSTRACT:
Apparatus is disclosed for monitoring an alternating current circuit having a three wire connection, wherein alternating voltage power is applied between two wires and the third wire is a circuit ground. The apparatus detects an open ground circuit and opens a circuit breaker to disconnect the voltage over the two alternating current wires whenever an open ground circuit is detected.

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patent: 3595228 (1971-07-01), Simon et al.
patent: 3696364 (1972-10-01), Lavelle
patent: 3823342 (1974-07-01), Burr et al.
patent: 3903430 (1975-09-01), Arns

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