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電(dian)(dian)(dian)動(dong)機(ji)(ji)啟動(dong)后電(dian)(dian)(dian)動(dong)機(ji)(ji)保護(hu)器(qi)(qi)(qi)(qi)(qi)(qi)不顯(xian)示，并不一(yi)定是(shi)(shi)電(dian)(dian)(dian)動(dong)機(ji)(ji)保護(hu)器(qi)(qi)(qi)(qi)(qi)(qi)壞了，首(shou)先要檢測電(dian)(dian)(dian)動(dong)機(ji)(ji)保護(hu)器(qi)(qi)(qi)(qi)(qi)(qi)的供電(dian)(dian)(dian)電(dian)(dian)(dian)源(yuan)是(shi)(shi)否接(jie)觸不良，有(you)部分電(dian)(dian)(dian)動(dong)機(ji)(ji)保護(hu)器(qi)(qi)(qi)(qi)(qi)(qi)是(shi)(shi)通過(guo)接(jie)線(xian)端子(zi)(zi)方便插拔，有(you)時候接(jie)線(xian)端子(zi)(zi)沒(mei)有(you)壓(ya)到(dao)底，導致保護(hu)器(qi)(qi)(qi)(qi)(qi)(qi)供電(dian)(dian)(dian)電(dian)(dian)(dian)源(yuan)沒(mei)有(you)給(gei)到(dao)位，所以(yi)保護(hu)器(qi)(qi)(qi)(qi)(qi)(qi)不顯(xian)示。第二是(shi)(shi)電(dian)(dian)(dian)動(dong)機(ji)(ji)保護(hu)器(qi)(qi)(qi)(qi)(qi)(qi)已損壞，因自身變壓(ya)器(qi)(qi)(qi)(qi)(qi)(qi)燒壞，從(cong)而無法顯(xian)示。如(ru)果電(dian)(dian)(dian)動(dong)機(ji)(ji)保護(hu)器(qi)(qi)(qi)(qi)(qi)(qi)運行(xing)指示燈亮，電(dian)(dian)(dian)動(dong)機(ji)(ji)啟動(dong)時，電(dian)(dian)(dian)流不顯(xian)示時就需要檢查保護(hu)器(qi)(qi)(qi)(qi)(qi)(qi)的采樣(yang)互感器(qi)(qi)(qi)(qi)(qi)(qi)或連接(jie)線(xian)是(shi)(shi)否正常。   通過(guo)以(yi)(yi)上描(miao)述，我(wo)們可以(yi)(yi)很好的判斷是保(bao)(bao)護器自身問題還是保(bao)(bao)護器供電(dian)電(dian)源沒有給到位。