Thermal Field Simulation and Analysis of Tulip Contact Based on Virtual Material Method

In order to analyze the temperature distribution of circuit breaker tulip contact, a thermal field simulation model for contact is built combined with electromagnetic-stress-thermal coupled finite element and virtual material method which models resistance characteristics contact. The rise characteristic contacts under rated current conditions short-circuit analyzed model. Results show that can describe contraction additional at end finger simultaneously, so as simulate partial high interface. Then, influence spring pressure uniformity on analyzed. decrease imbalance may lead an increase in proposed be used reference design overheating analysis