IC693CPU360RR 運(yùn)行中的電動機(jī),如果電流不超過該電動機(jī)的額定電流就說明電路上基本沒什么問題,如果沒有改變原負(fù)荷,要檢測電壓是否于額定電壓,一般380V就正負(fù)5%正常??喘h(huán)境溫度是否過高。軸承是否缺油。散熱風(fēng)扇是否損壞。
(1)負(fù)載過大。應(yīng)減輕負(fù)載或更換較大容量的電動機(jī)。
(2)兩相運(yùn)轉(zhuǎn)。應(yīng)檢查熔絲是否熔斷、開關(guān)接觸點(diǎn)的接觸是否良好,排除故障;
(3)電動機(jī)風(fēng)道阻塞。應(yīng)清除風(fēng)道灰塵或油垢;
(4)環(huán)境溫度升高。應(yīng)采取降溫措施;
(5)定子繞組匝間或相間短路。用兆歐表或萬用表檢查二相繞組間的絕緣電阻;用電流平衡法檢查三相繞組電流,電流大的相為短路相,也可用短路偵察器檢查繞組匝間是否短路;
(6)定子繞組接地??捎萌f用表或指示燈檢查,電阻為零的為接地相;
(7)電源電壓過低或過高。用萬用表的電壓檔或電壓表檢查電動機(jī)輸入端電源電壓。
IC693CPU360RR
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IC693CPU360RR