【摘要】 组成塑壳断路器内部结构的各部分在三相短路开断过程中的作用各不相同，文中根据它们的功能和特点分别建立数学模型。通过计算机仿真，得到了准确的短路开断特性。建立了链式电弧模型，并结合激波理论，分析电弧的运动。更多还原

【Abstract】 The components in molded case circuit breaker have different functions during interruption process in three phase short circuit.According to their specific properties,numerical models are set up and combined togehter to get more accurate switching characteristics by computer simulation.In this paper a chain arc model coupled with classic shock wave theory is built to analyze the motion of arc.更多还原