什么導致起重機電動機溫度異常
電機是起重機的(de)(de)驅動(dong)(dong)設備(bei)同時(shi)也是(shi)設備(bei)的(de)(de)核心(xin)部(bu)件(jian)。 如果有問題,整機(ji)無法正常運行(xing),所以我(wo)們應該盡量避(bi)(bi)免(mian)(mian)相關問題的(de)(de)發生。但是(shi)由(you)于工作環(huan)境復雜,我(wo)們無法準確預測(ce)各種因(yin)素(su)對起(qi)重(zhong)機(ji)電(dian)機(ji)的(de)(de)影(ying)響,因(yin)此不能(neng)完(wan)全避(bi)(bi)免(mian)(mian)故障(zhang)。其中,起(qi)重(zhong)設備(bei)的(de)(de)電(dian)動(dong)(dong)機(ji)溫(wen)度過高是(shi)什么(me)造成的(de)(de)呢?
首先,可能是電(dian)(dian)(dian)(dian)動機的電(dian)(dian)(dian)(dian)源電(dian)(dian)(dian)(dian)壓(ya)過高,這(zhe)會增加(jia)反電(dian)(dian)(dian)(dian)動勢(shi),磁(ci)(ci)通(tong)和(he)磁(ci)(ci)通(tong)密度,導(dao)(dao)致磁(ci)(ci)芯和(he)繞組過熱。 當然(ran),在類(lei)似情況(kuang)下可能會出現電(dian)(dian)(dian)(dian)壓(ya)過低的情況(kuang),因此如(ru)果此時(shi)起動電(dian)(dian)(dian)(dian)機的電(dian)(dian)(dian)(dian)磁(ci)(ci)轉矩保(bao)持不變,則磁(ci)(ci)通(tong)量(liang)會減(jian)小,轉子電(dian)(dian)(dian)(dian)流也會相應增加(jia),導(dao)(dao)致銅(tong)損增加(jia)。 繞組。
除了過(guo)高(gao)過(guo)低的電(dian)(dian)壓之(zhi)外,不對(dui)稱的電(dian)(dian)壓也會使(shi)三相電(dian)(dian)動機走(zou)單(dan)相,那么運行的二相繞組(zu)就會因通(tong)過(guo)大電(dian)(dian)流而過(guo)熱。由上述可見,一旦發現(xian)起重機的電(dian)(dian)動機溫度過(guo)高(gao),就要考(kao)慮電(dian)(dian)源(yuan)的問題,其他(ta)再排(pai)查其他(ta)因素并(bing)采取相應的解(jie)決措施。
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