操作过电压对电机过电压保护存在问题的改进

Problems existed in over-voltage protection of electric motor and improvement based on over-voltage in operation

介绍了真空断路器运行中操作过电压及其危害 ,以山西铝厂热电分厂为例对其存在的有保护 (MOA)的缺陷进行分析 。

In this paper the over voltage in operation and its damages in operational phase of vacuum circuit breaker are introduced. And taking thermoelectric plant as example the existing defects is analyzed. Meanwhile, according to the new MOP interphase over voltage protector its application potential is predicted.