Circuit breaker

Details Circuit breaker Circuit breaker

1993-04-16

1994-11-22

Pellinen, A. D.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200145, 200148D, H01H 3334, H01H 3342, H01H 3352

Patent

active

053671341

ABSTRACT:
In a closing operation of a circuit breaker with resistor contact, a resister contact is closed prior to closing of a main contact by the same first hydraulic operation system. In opening operation, the resistor contact is driven by a second hydraulic operation system used to close the main contact after operating the main contact by the first hydraulic operation system. Opening timing of the resistor contact is controlled by a mechanical interlock mechanism or hydraulic control circuit.

REFERENCES:
patent: 4215256 (1980-07-01), Sakaguchi et al.
patent: 4454394 (1984-06-01), Toyoda
patent: 4581510 (1986-04-01), Bischofberger et al.

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