检测大型(xing)电机故障的方法大概可(ke)以分为以下(xia)四种：

1、靠触(chu)觉用手摸(mo)机壳表(biao)面可以发(fa)现大(da)型(xing)电机的温度(du)过高和震动现象造成震动的原因是：

机(ji)械负(fu)载不(bu)(bu)(bu)平衡(heng)、各紧(jin)固(gu)部件有松动(dong)现(xian)象、大型电(dian)机(ji)基(ji)础强度不(bu)(bu)(bu)够、联轴(zhou)器连接(jie)不(bu)(bu)(bu)当、气隙不(bu)(bu)(bu)均或混入杂(za)物、电(dian)压不(bu)(bu)(bu)平衡(heng)、单相(xiang)运转(zhuan)、绕组故障(zhang)、轴(zhou)承(cheng)故障(zhang)等。造成大型电(dian)机(ji)温度过(guo)高(gao)的(de)原因是(shi)过(guo)载、冷却风道堵塞(sai)、单相(xiang)运转(zhuan)、匝间(jian)短(duan)路、电(dian)压过(guo)高(gao)或过(guo)低(di)、三相(xiang)电(dian)压不(bu)(bu)(bu)平衡(heng)、加速(su)特性(xing)(xing)不(bu)(bu)(bu)好使(shi)起(qi)动(dong)时间(jian)过(guo)长、定子(zi)和转(zhuan)子(zi)相(xiang)擦、起(qi)动(dong)器接(jie)触(chu)不(bu)(bu)(bu)良、频繁起(qi)动(dong)和制(zhi)动(dong)或反接(jie)制(zhi)动(dong)、进口风温度过(guo)高(gao)、机(ji)械卡住(zhu)等。用手摸大型电(dian)机(ji)表面估计温度高(gao)低(di)时，由(you)于每个人的(de)感觉不(bu)(bu)(bu)同，带有主观(guan)性(xing)(xing)，因此要由(you)经验来决定。

2、靠嗅(xiu)觉可以发(fa)现焦味、臭味造(zao)成这(zhei)种现象(xiang)的原因是：

大型(xing)电机(ji)过热、绕(rao)组烧(shao)毁(hui)、单相(xiang)运(yun)转、绕(rao)组故障、轴承故障等。

3、首先是外观检(jian)查，靠(kao)视觉可以(yi)发(fa)现(xian)下列异常现(xian)象：

大(da)型(xing)电(dian)(dian)(dian)(dian)(dian)机外部紧固件是(shi)否有(you)松动，零部件是(shi)否有(you)毁(hui)坏，设(she)备表(biao)(biao)面是(shi)否有(you)油污、腐蚀现(xian)象；大(da)型(xing)电(dian)(dian)(dian)(dian)(dian)机的(de)各接触(chu)点和连(lian)接处是(shi)否有(you)变色、烧痕和烟迹等(deng)现(xian)象。发生这些现(xian)象原因是(shi)由于(yu)大(da)型(xing)电(dian)(dian)(dian)(dian)(dian)机局部过(guo)(guo)(guo)热、导(dao)体接触(chu)不良或绕组烧毁(hui)等(deng)；仪(yi)表(biao)(biao)指(zhi)示是(shi)否正(zheng)常。电(dian)(dian)(dian)(dian)(dian)压(ya)表(biao)(biao)无指(zhi)示或不正(zheng)常，则(ze)表(biao)(biao)明(ming)电(dian)(dian)(dian)(dian)(dian)源电(dian)(dian)(dian)(dian)(dian)压(ya)不平(ping)衡、熔丝烧断、转子(zi)三相电(dian)(dian)(dian)(dian)(dian)阻(zu)不平(ping)衡、单相运转、导(dao)体接触(chu)不良等(deng)。电(dian)(dian)(dian)(dian)(dian)流表(biao)(biao)指(zhi)示过(guo)(guo)(guo)大(da)，则(ze)表(biao)(biao)明(ming)大(da)型(xing)电(dian)(dian)(dian)(dian)(dian)机过(guo)(guo)(guo)载、轴承故障、绕组匝(za)间短路等(deng)；大(da)型(xing)电(dian)(dian)(dian)(dian)(dian)机停转，造成的(de)原因有(you)：电(dian)(dian)(dian)(dian)(dian)源停电(dian)(dian)(dian)(dian)(dian)、单相运转、电(dian)(dian)(dian)(dian)(dian)压(ya)过(guo)(guo)(guo)低、大(da)型(xing)电(dian)(dian)(dian)(dian)(dian)机转矩(ju)太(tai)小、负(fu)载过(guo)(guo)(guo)大(da)、电(dian)(dian)(dian)(dian)(dian)压(ya)降(jiang)过(guo)(guo)(guo)大(da)、轴承烧毁(hui)、机械卡住等(deng)。

4、采(cai)用听(ting)诊(zhen)棒靠听(ting)觉可以听(ting)到大(da)型(xing)电(dian)(dian)(dian)机的(de)各种(zhong)杂音，其中包括电(dian)(dian)(dian)磁噪声、通风噪声、机械摩(mo)擦声、轴(zhou)承杂音等，从(cong)而可判断出大(da)型(xing)电(dian)(dian)(dian)机的(de)故障原(yuan)因。

引起噪声大的原因在机械方面有：

轴(zhou)承故障(zhang)、机械不(bu)平(ping)衡、紧固螺钉(ding)松动、联(lian)轴(zhou)器连接(jie)不(bu)符要求、定转子铁(tie)心相擦(ca)等；在电气方(fang)面有：电压不(bu)平(ping)衡、单相运行、绕组有断(duan)路或击穿(chuan)故障(zhang)、起动性能(neng)不(bu)好、加(jia)速性能(neng)不(bu)好等。

通过阅读以上内容，想(xiang)必您(nin)一定掌握了检(jian)测大型电(dian)(dian)(dian)机(ji)(ji)(ji)(ji)故障的方法，希望(wang)能对(dui)您(nin)有(you)所帮助。山东子昂机(ji)(ji)(ji)(ji)电(dian)(dian)(dian)设备有(you)限公司(si)是一家专注高低(di)压(ya)电(dian)(dian)(dian)机(ji)(ji)(ji)(ji)、电(dian)(dian)(dian)气产(chan)品(pin)的维修(xiu)(xiu)、研(yan)发、生产(chan)、销售和服(fu)务为(wei)一体的科技型企(qi)业。本(ben)公司(si)专业维修(xiu)(xiu)：西(xi)安西(xi)玛电(dian)(dian)(dian)机(ji)(ji)(ji)(ji)、上海电(dian)(dian)(dian)机(ji)(ji)(ji)(ji)、中电(dian)(dian)(dian)电(dian)(dian)(dian)机(ji)(ji)(ji)(ji)、兰(lan)州电(dian)(dian)(dian)机(ji)(ji)(ji)(ji)、湘潭电(dian)(dian)(dian)机(ji)(ji)(ji)(ji)、佳木(mu)斯电(dian)(dian)(dian)机(ji)(ji)(ji)(ji)、沈(shen)阳电(dian)(dian)(dian)机(ji)(ji)(ji)(ji)、江西(xi)东元电(dian)(dian)(dian)机(ji)(ji)(ji)(ji)、无锡电(dian)(dian)(dian)机(ji)(ji)(ji)(ji)、六(liu)安电(dian)(dian)(dian)机(ji)(ji)(ji)(ji)、ＡＢＢ电(dian)(dian)(dian)机(ji)(ji)(ji)(ji)、西(xi)门子电(dian)(dian)(dian)机(ji)(ji)(ji)(ji)等(deng)(deng)各大型高低(di)压(ya)电(dian)(dian)(dian)机(ji)(ji)(ji)(ji)、直(zhi)流电(dian)(dian)(dian)机(ji)(ji)(ji)(ji)、发电(dian)(dian)(dian)机(ji)(ji)(ji)(ji)、防爆电(dian)(dian)(dian)机(ji)(ji)(ji)(ji)及(ji)同(tong)步电(dian)(dian)(dian)机(ji)(ji)(ji)(ji)维修(xiu)(xiu)、维护、保养及(ji)现场拆检(jian)等(deng)(deng)服(fu)务。