Circuit breaker with leakage current detecting functions

Details Circuit breaker with leakage current detecting functions Circuit breaker with leakage current detecting functions

1991-01-10

1992-12-15

DeBoer, Todd E.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

361 96, 340663, H02H 308

Patent

active

051722933

ABSTRACT:
A circuit breaker has leakage current detecting functions, that is leakage detection, leakage alarm and disconnection the circuit in the leakage state from the power source side; in order to conduct such functions, the circuit breaker comprises a magnetic release device for disconnecting a circuit in the leakage state, a zero-phase current transformer for detecting a leakage current, a sensitivity selector, an amplifier and a leakage relay for issuing a leakage alarm signal.

REFERENCES:
patent: 3745414 (1973-07-01), Frantti et al.
patent: 4338647 (1982-07-01), Wilson et al.
patent: 4831496 (1989-05-01), Brant et al.

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