新疆风采18选7

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发布时间:2019-06-17 09:33:38  浏览次数:

  

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1.兆欧表法。检查时,应根据三相电机的额定电压选择兆欧表的电压等级。低压三相电机采用500V的兆欧表。用兆欧表测量各相绕组对地的绝缘电阻,当兆欧表读数为零时,说明被测相绕组有接地故障;若兆欧表指针在零时处摇摆不定,则说明被测相绕组的绝缘有击穿现象。这种方法一般只能检查出是哪一相绕组接地,而不能查出接地点的位置。

  

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新疆风采18选7  3.GUANCHAFA。YOUYUJIEDIDIANWANGWANGJIECHUBULIANG,DIANLIULIUGUODIDIANSHIHUIFARE,CHANGCHANGCHUXIANJUEYUANPOLIEHEJIAOHEIDEHENJI,ZHEIXIEBUWEIDEGUZHANGKEYIYONGZHIJIEGUANCHADEFANGFALAIJIANCHA。

  

新疆风采18选7  4.MAOYANFA。ZAIDINGZITIEXINYURAOZUZHIJIANJIAYIJIAODIDIANYA,DANGDIANLIULIUGUOGUZHANGDIANSHI,SHIJUEYUANSHAOSUNERMAOYANHUOCHANSHENGHUOHUA。ZAIMAOYANCHUHUOCHUXIANHUOHUACHUZUOHAOBIAOJI,GAIDIANJIUSHIJIEDIDIAN。ZHIDEZHUYIDESHI,JIADIANYASHI,LIUGUOGUZHANGDIANDEDIANLIUYINGKONGZHIZAIEDINGDIANLIUDE20%~50%WEIYI。ZHEIZHONGFANGFAYIBANYONGYUBUWANQUANJIEDIDEQINGKUANG。


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