针对励磁整流柜主熔断器连续多次异常熔断的故障情况,分析了导致可控硅熔断器熔断的可能因素。在对可控硅触发波形的检查中,找到了引起这一故障的原因并通过更换移相触发板,彻底排除了故障。

Based on the frequent abnormal main fuse blowing faults in the excitation rectifier cabinet,the cause analysis for the blowing faults of silicon controlled fuse is carried out.This paper identifies the reason in the examination of silicon controlled trigger waveform and eliminates the faults thoroughly by replacing the phase-shifting trigger plate.