断相与相序保护继电器 指示灯不亮的问题 正泰XJ3-G型断相与相序保护继电器通电后不亮是不是坏了

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可能是指示灯有虚焊，或电容处有虚焊。可以拿掉外壳看一下

扩展阅读：如何判断空调相序错了 ... 相序保护器正常指示灯 ... 显示器故障大全图 ... 相序保护器接线视频 ... 相序保护器坏了症状 ... 高压柜相序报警 ... 电源相序检测照片 ... 相序继电器接法详解 ... 电梯相序的接法 ...