Dynamical Simulation and Optimization of Operating Mechanism for Rotating Two-Breakers Molded Case Circuit Breaker

Adopting ADAMS, a virtual prototype technique software to build a novel dynamical model of rotating two-breakers modeled case circuit breaker operating mechanisms and also to make the dynamic motion simulation. On base of the above, the influences of several main factors on the breaking speed such as the stiffness of main spring, the relative position of the links, the mass of each moving components have been investigated. The mechanism was optimized by taking the position of the key shaft as the design variable. This paper offers a reference to the design of the new generation of the low voltage modeled case circuit breaker.