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电气绝缘的小知识

来源:上海诚格    时间:2017-11-08    阅读:

一、为什么要测绝缘

因为电动机或其他电气设备2元彩票停用或备用时间较长时,由于受潮或有大量积灰,影响电气设备的绝缘;长期使用的电气设备,绝缘也有可能老化,端线松弛。测量电气设备的绝缘就能发现这些问题,以便及时采取措施,不影响电气设备的运行或切换使用 。

ZHU:SHOUCHAOZENMEYINGXIANGJUEYUAN?DANGBEICEDIANQISHEBEIBIAOMIANXICHAOHUOCIJUEYUANBIAOMIANXINGCHENGSHUIMOHUISHIXIELOUDIANLIUZENGJIASHIJUEYUANDIANZUXIANZHUJIANGDIERYINGXIANGJUEYUAN。

二、吸收比

DUIYUDIANLIBIANYAQI、DIANLIDIANRONGQI、JIAOLIUDIANDONGJIDENGGAOYADIANQISHEBEI,WEILEKAOCHAQIJUEYUANDESHOUCHAOQINGKUANG,CHULECELIANGTAMENDEJUEYUANDIANZUWAI,HAIYAOCELIANGXISHOUBI。XISHOUBITONGCHANGYONGJIAYAHOU60MIAOHE15MIAOSHIDEJUEYUANDIANZUBIZHIBIAOSHI,JIWEIK,JIK=R60/R15。RUGUOKZHIDA,BIAOMINGJUEYUANGANZAO;RUGUOKZHIXIAO,BIAOMINGJUEYUANYISHOUCHAO。YIBANLAISHUO,WEISHOUCHAODEJUEYUAN,QIKZHIDAYU1.3;ERDANGKZHIJIEJINYU1SHI,ZESHUOMINGJUEYUANYISHOUCHAOHUOYOUJUBUQUEXIAN 。

三、绝缘测量的工具

1、ZHONGLEI:

SHOUYAOSHIYAOBIAO

DIANZISHIYAOBIAO

DIANZISHUZISHIYAOBIAO

2元彩票2、ZHAOOUBIAODEEDINGDIANYAYINGGENJUBEICEDIANQISHEBEIDEEDINGDIANYALAIXUANZE。CELIANG500VYIXIADESHEBEI,XUANYONG500VDEZHAOOUBIAO;EDINGDIANYAZAI500VYISHANGDESHEBEI,YINGXUANYONG2500VDEZHAOOUBIAO。

2元彩票3、RUHEJIANCHAZHAOOUBIAOSHIFOUWANHAO?

JIANGZHAOOUBIAOSHUIPINGQIEPINGWENFANGZHI,JIANCHAZHIZHENPIANZHUANQINGKUANG:JIANGE(JIEDIDUAN)、L(XIANLU)LIANGDUANKAILU,YIYUE120r/minDEZHUANSUYAODONGSHOUBING,GUANCHAZHIZHENSHIFOUZHIDAO“∞”CHU;RANHOUJIANGE (JIEDIDUAN)、L(XIANLU)LIANGDUANDUANJIE,HUANMANYAODONGSHOUBING,GUANCHAZHIZHENSHIFOUZHIDAO“0”CHU,JINGJIANCHAWANHAOCAINENGSHIYONG。

四、安规中对于测量绝缘的规定

1、SHIYONGYAOBIAOCELIANGGAOYASHEBEIJUEYUAN,YINGYOULIANGRENDANREN。

2、CELIANGYONGDEDAOXIAN,YINGSHIYONGJUEYUANDAOXIAN,QIDUANBUYINGYOUJUEYUANTAO。

3、CELIANGJUEYUANSHI,BIXUJIANGBEICESHEBEICONGGEFANGMIANDUANKAI,YANMINGWUDIANYA,QUESHIZHENGMINGSHEBEIWURENGONGZUOHOU,FANGKEJINXING。

4、ZAICELIANGZHONGJINZHITARENJIEJINSHEBEI。

5、ZAICELIANGJUEYUANQIANHOU,BIXUJIANGBEICESHEBEIDUIDIFANGDIAN。CELIANGXIANLUJUEYUANSHI,YINGQUDEDUIFANGYEXUHOUFANGKEJINXING。ZAIYOUGANYINGDIANYADEXIANLUSHANG(TONGGANJIASHEDESHUANGHUIXIANLUHUODANHUILUYULINGYIHUIXIANLUYOUPINGXINGDUAN)CELIANGJUEYUANSHI,BIXUJIANGLINGYIHUIXIANLUTONGSHITINGDIAN,FANGKEJINXING。

6、LEIDIANSHI,YANJINCELIANGXIANLUJUEYUAN。

2元彩票7、ZAIDAIDIANSHEBEIFUJINCELIANGJUEYUANDIANZUSHI,CELIANGRENYUANHEYAOBIAOANFANGWEIZHI,BIXUXUANZESHIDANG,BAOCHIANQUANJULI,YIMIANYAOBIAOYINXIANHUOYINXIANZHICHIWUCHUPENGDAIDIANBUFEN。YIDONGYINXIANSHI,BIXUZHUYIJIANHU,FANGZHIGONGZUORENYUANCHUDIAN。

五、测量时的注意事项

1、BUNENGZAISHEBEIDAIDIANDEQINGKUANGXIACELIANGQIJUEYUANDIANZU。CELIANGQIANBEICESHEBEIBIXUQIEDUANDIANYUANHEFUZAI,BINGJINXINGFANGDIAN;YIYONGZHAOOUBIAOCELIANGGUODESHEBEIRUYAOZAICICELIANG,YEBIXUXIANJIEDIFANGDIAN。

2元彩票2、ZHAOOUBIAOCELIANGSHIYAOYUANLIDADIANLIUDAOTIHEWAICICHANG。

3、YUBEICESHEBEIDELIANJIEDAOXIANYINGYONGZHAOOUBIAOZHUANYONGCELIANGXIANHUOXUANYONGJUEYUANQIANGDUGAODELIANGGENDANXINDUOGURUANXIAN,LIANGGENDAOXIANQIEJIJIAOZAIYIQI,YIMIANYINGXIANGCELIANGZHUNQUEDU。

2元彩票4、CELIANGGUOCHENGZHONG,RUGUOZHIZHENZHIXIANG“0”WEI,BIAOSHIBEICESHEBEIDUANLU,YINGLIJITINGZHIZHUANDONGSHOUBING。

2元彩票5、CELIANGGUOCHENGZHONGBUDECHUJISHEBEIDECELIANGBUFEN,YIFANGCHUDIAN。

6、CELIANGDIANRONGXINGSHEBEIDEJUEYUANDIANZUSHI,CELIANGWANBI,YINGDUISHEBEICHONGFENFANGDIAN。

六、绝缘合格标准

2元彩票6 kVDIANQISHEBEIJUEYUANDIANZUZHIBUXIAOYU6 MΩ,BINGCEXISHOUBIR60"/R15",BIZHIBUDIYU1.3。400VJIYIXIADIANQISHEBEIJUEYUANDIANZUZHIBUXIAOYU0.5 MΩ。

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