Hybrid circuit breaker

Details Hybrid circuit breaker Hybrid circuit breaker

1985-07-11

1986-10-14

Macon, Robert S.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200145, H01H 3316

Patent

active

046174354

ABSTRACT:
A hybrid circuit breaker is formed with a vacuum interrupter, a breaking resistor connected in parallel to the vacuum interrupter, an SF.sub.6 gas interrupter connected in series to the breaking resistor and a spring mechanism for actuating the vacuum interrupter so that a circuit current to be interrupted is commutated to the breaking resistor. A plurality of the above hybrid circuit breakers are connected in series in an EHV/UHV electric power system. The spring mechanism is provided exclusively for the commutation action of the vacuum interrupter. The output power from a breaker driver is fully used to circuit-open the gas interrupter, thereby shortening the maximum current feeding period of the breaking resistor.

REFERENCES:
patent: 3863041 (1975-01-01), Rostron et al.
patent: 4087664 (1978-05-01), Weston
patent: 4204101 (1980-05-01), Dethlefsen
patent: 4555603 (1985-11-01), Aoyama

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