Stored-spring-energy drive for a high-voltage circuit breaker

Details Stored-spring-energy drive for a high-voltage circuit breaker Stored-spring-energy drive for a high-voltage circuit breaker

H - Electricity

01

H

306/328

H01H 5/00 (2006.01) H01H 3/30 (2006.01)

Patent

CA 1328121

ABSTRACT OF THE DISCLOSURE In a stored-spring-energy type actuator mechanism for a high-voltage circuit breaker, energy is stored in a spiral spring in order to switch on the circuit breaker and also to load a switch-off spring of the circuit breaker. To store sufficient energy for more than one switch-on operation, a fluid-pressure accumulator is provided in which sufficient energy is stored to wind up the spiral spring at least one additional time through a fluid-pressure motor. Between the pressure accumulator and the motor is a control valve which opens when the spiral spring is partly unloaded, causing the hydraulic motor to rewind the spring.

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