目前大站电气集中设备中稳定信号电源是由大站电源系列中的调压屏来完成的。近几年电源屏运用中经常发生调压三相电机烧损的故障,此类故障是由电机缺相造成的。电机缺相主要是三相电源的熔丝器接触不良或三相交流接触器接点接触不齐等,三相电源回路中有一相接触不良……等原因造 At present, the stable signal power in the electric station of the large station is completed by the voltage-regulating screen in the station’s power supply. In recent years, the use of power screen often occur three-phase voltage regulator burned fault, such failure is caused by the motor phase loss. Motor phase loss is mainly three-phase power fuse contacts poor or three-phase AC contactor contacts missing, three-phase power circuit has a bad contact ...... and other reasons