Abstract
In order to study the mechanical characteristics of the vacuum circuit breaker, virtual prototype technology is used to establish a dynamic simulation model of the operating mechanism of the VS1 vacuum circuit breaker, and the dynamic characteristics of the opening and closing process of the circuit breaker are obtained. Then on this basis, in order to reduce the closing bounce of the circuit breaker, the various parameters of the mechanism that affect the closing bounce are selected as design variables for optimization and improvement. The simulation results prove that appropriately increasing the preload of the contact spring can effectively reduce the closing bounce.
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