Drive for a high-tension circuit breaker

Details Drive for a high-tension circuit breaker Drive for a high-tension circuit breaker

1984-02-28

1986-04-08

Macon, Robert S.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200 82B, H01H 3354

Patent

active

045815100

ABSTRACT:
An electrical high-tension circuit breaker with main contacts and auxiliary contacts in parallel to the main contacts. Both sets of contacts are actuated by hydraulic drives which are fed from a hydraulic accumulator. The drive of this circuit breaker is of high reliability and small size considering the power to be switched. This is achieved with a main drive which contains a piston-cylinder arrangement which can be pressurized with hydraulic fluid via a main valve and a secondary drive which is actuated via a valve arrangement. The valve arrangement is controllable as a function of the position of the main contacts and/or the auxiliary contacts. With this drive, failure-susceptible elements, such as catches, mechanical dampers and couplings, are avoided. The drive is preferably for high-tension circuit breakers for voltages above 220 kV.

REFERENCES:
patent: 2676285 (1954-04-01), Jansson et al.
patent: 3655931 (1972-04-01), Circle

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