IC693CPU313LT
電機過熱甚至冒煙？
1、故障原因
①電源電壓過高；
②電源電壓過低，電動機又帶額定負載運行，電流過大使繞組發(fā)熱；
③修理拆除繞組時，采用熱拆法不當，燒傷鐵芯；
④電動機過載或頻繁起動；
⑤電動機缺相，兩相運行；
⑥重繞后定于繞組浸漆不充分；
⑦環(huán)境溫度高電動機表面污垢多，或通風道堵塞。
2、故障排除
①降低電源電壓（如調(diào)整供電變壓器分接頭）；
②提高電源電壓或換粗供電導線；
③檢修鐵芯，排除故障；
④減載；按規(guī)定次數(shù)控制起動；
⑤恢復三相運行；
⑥采用二次浸漆及真空浸漆工藝；
⑦清洗電動機，改善環(huán)境溫度，采用降溫措施。
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