Oleopneumatic control system for electric circuit-breakers

Details Oleopneumatic control system for electric circuit-breakers Oleopneumatic control system for electric circuit-breakers

1984-05-29

1987-06-02

Look, Edward K.

Power plants

Pressure fluid source and motor

With control means for structure storing work driving energy

60413, 91461, 200 82B, F16D 3102

Patent

active

046692657

ABSTRACT:
The times of response of a circuit-breaker control system to breaker-closing orders are reduced by means of a unit comprising a pressure reducer and a low-capacity compensating hydraulic accumulator, the unit being connected to the portions of the hydraulic control circuit which are alternately pressurized and depressurized. The hydraulic accumulator resupplies oil at reduced pressure to the portions of circuit in which there is a lack of oil or which are filled with emulsified oil as a result of depressurization operations.

REFERENCES:
patent: 2977762 (1961-04-01), Dilworth
patent: 3969985 (1976-07-01), Grieger et al.
patent: 4204461 (1980-05-01), Gratzmuller
patent: 4213020 (1980-07-01), Freeman
patent: 4463818 (1984-08-01), Sonneborn
patent: 4475710 (1984-10-01), Leupers
Robert Bonnefille, Techniques de l'Ingenieur, "Electrotechnique", pp. D657-5 and D657-6.

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