Actuator mechanism for a high-voltage circuit breaker
AssigneeSprecher Energie AG
InventorMax Kuhn
Life of this patent
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Abstract
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 ring 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.
Claims13
A stored-spring-energy type actuator mechanism for a high-voltage circuit breaker comprising the circuit breaker, a spring-energy accumulator, loading means for charging the spring-energy accumulator with energy, and transmission means for converting released energy of the accumulator into operation of the circuit breaker, wherein the loading means includes a fluid-pressure operated motor connected with the spring-energy accumulator, said fluid-pressure operated motor comprises a high pressure motor connection and a low-pressure motor connection, fluid supply means for the fluid-pressure operated motor including a fluid-pressure accumulator having an energy capacity corresponding to an energy requirement for charging the spring-energy accumulator at least one time and connected to the high-pressure motor connection, and a control valve means for controlling flow of fluid from the fluid-pressure accumulator to the motor, and control means operable by the spring-energy accumulator for opening the control valve when the spring-energy accumulator is partly loaded.
Dependencies are inferred from the claim text.