6GK1901-1BB30-0AE0
通過聞電動機的氣味也能判斷及預防故障。
打開接線盒用鼻子嗅
看是否有焦糊味，若發現有特殊的油漆味，說明電動機內部溫度過高；若發現有很重的糊味或焦臭味，則可能是絕緣層維修網被擊穿或繞組已燒毀。
如果沒有味道，還需要用兆歐表測其繞組與外殼之間的絕緣阻值低於0.5兆，得進行烘幹處理。阻值為零，說明已經損壞。
摸電動機一些部位的溫度也可判斷故障原因。
為確保，用手摸時應用手背去碰觸電動機外殼、軸承周圍部分。
若發現溫度異常，其原因可能有以下幾種：
1.通風不良。如風扇脫落、通風道堵塞等。
2.過載。致使電流過大而使定子繞組過熱。
3.定子繞組匝間短路或三相電流不平衡。
4.頻繁啟動或制動。
5.若軸承周圍溫度過高，則可能是軸承損壞或缺油所致。
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