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武汉履带吊出租欧洲杯外围 > 吊车资讯 > 吊车起重机保护系统之电气线路对地绝缘电阻,接地保护
吊车起重机保护系统之电气线路对地绝缘电阻,接地保护
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欧洲杯外围HUBEIWUHANLVDAIDIAOCHUZUGONGSI

时间 : 2019-11-18 08:33 浏览量 : 18

吊车起重机保护系统之电气线路对地绝缘电阻,接地保护
吊车起重机保护系统之电气线路对地绝缘电阻

    按照设备的电压等级确定检验所用兆欧表电压。断开电源,人为使起重机械上的接触器、开关全部处于闭合状态,使起重机械电气线路全部导通,将兆欧表L端接于电气线路,E端接于起重机械金属结构或者接地极上,测量绝缘电阻值;也可以釆用分段测量的方法。测量时应当将容易击穿的电子元件短接。

    应符合以下要求:

1.EDINGDIANYAXIAOYUHUOZHEDENGYU500VSHI,BUDIYU1.0MΩ;FANGBAOQIZHONGJIBUDIYU1.5MΩ;

2.JUEYUANQIZHONGJIXIE,YONG1000VZHAOOUBIAOCELIANGDIANQIXIANLUDUIDI、DIAOGOUYUHUALUN、QISHENGJIGOUYUXIAOCHEJIA、XIAOCHEJIAYUDACHEDEJUEYUANZHI,QIZHIJUNBUDIYUl.0MΩ。

起重机保护系统之接地保护

    QIZHONGJIDIANQISHEBEIDEJIEDI,SHIYIQIZHONGJIZHENGTIJINSHUJIEGOUZUOWEIJIEDIGANXIANDE。YINCI,QIZHONGJIDIANQISHEBEIDEJIEDI,JIUSHISHIDIANQISHEBEIZHENGCHANGSHIBUDAIDIANDEJINSHUWAIQIAOYUQIZHONGJIDEZHENGTIJINSHUJIEGOUXIANGLIANJIE。ZHENGTIJINSHUJIEGOUZHIJIANCAIYONGFEIHANJIELIANJIESHI,YINGLINGSHEJIEDIGANFUCHIXIANGYOUZHE⑸DANGDIANQISHEBEIDEJINSHUWAIQIAOZHIJIEGUDINGZAIJINSHUJIEGOUSHANG,BINGYOUKEKAODEDIANQILIANJIESHI,BUBILINGSHEDIANQILIANJIEXIAN。DANGJINSHUJIEGOUBIAOMIANTUYOUYOUQIHUOYANZHONGFUSHI,YOUKENENGZAOCHENGBUKEKAODEDIANQILIANJIESHI,DIANQISHEBEIJINSHUWAIQIAOYINGSHEJIEDIZHIXIAN。JIEDIZHIXIANBIXUCAIYONGTONGXIAN,ZUIXIAOJIEMIANLUODAOTIWEI4mm2,JUEYUANDAOXIANWEI1.5mm2。PANDINGSHANGSHUJIEDILIANJIESHIFOUKEKAO,KECAIYONGWANYONGBIAOR×1DANGHUOJIECHUDIANZUCELIANGYIJINXINGCELIANG。CAIYONGWANYONGBIAOCELIANGSHI,DUSHUYINGWEILING;CAIYONGJIECHUDIANZUCELIANGYICELIANGSHI,JIECHUDIANZUBUDAYU0.1Ω。

(一)电气设备接地

1.DIANQISHEBEIZHENGCHANGQINGKUANGLUHUAI?GUNNAIYIDUSHAJIQIKANGZHONGBENYOUDU┑GUNLIAOCHUANG;そYONGPOBI?YINGHE2.QIZHONGJIXIESHANGSUOYOUDIANQISHEBEIWAIQIAORUJINSHUDAOXIANGUAN、JINSHUZHIJIAJIJINSHUXIANCAO,JUNGENJUPEIDIANWANGQINGKUANGJINXINGKEKAOJIEDI(BAOHUJIEDIHUOZHEBAOHUJIELING)。

(二)金属结构接地

1.接地线

欧洲杯外围(1)JIANCHASHIFOUSHEZHIZHUANYONGJIEDIXIAN,JINSHUJIEGOUDELIANJIEYOUFEIHANJIECHU,SHIFOUCAIYONGLINGZHUANGSHEJIEDIGANXIANHUOZHEKUAJIEXIANDECHULI;

(2)JIANCHASHIFOUANZHAOGUIDINGJINYONGJINSHUJIEGOUHEJIEDIZUOWEIZAILIULINGXIAN(DIANQIXITONGDIANYAWEIANQUANDIANYACHUWAI)。

2.接地电阻

CAIYONGJIEDIDIANZUCELIANGYICELIANGQIZHONGJIXIEJIEDIDIANZU。CELIANGZHONGFUJIEDIDIANZUSHI,BAPEXIANCONGJIEDIZHUANGZHISHANGDUANKAI,YINGFUHEYIXIAYAOQIU:

(1)CAIYONGTNJIEDIXITONGSHI,PEXIANZHONGFUJIEDIMEIYICHUDEJIEDIDIANZUBUDAYU10Ω(CELIANGSHIBAJIEDIXIANCONGZHONGFUJIEDITISHANGDUANKAI);

欧洲杯外围(2)CAIYONGTTJIEDIXITONGSHI,QIZHONGJISHEZHILOUDIANBAOHUZHUANGZHI,DIANQISHEBEIDEWAILUKEDAODIANBUFEN(DIANYUANBAOHUJIEDIXIAN)DEJIEDIDIANZUBUDAYU4Ω;

(3)CAIYONGITJIEDIXITONGSHI,QIZHONGJIDIANQISHEBEIDEWAILUKEDAODIANBUFEN(DIANYUANBAOHUJIEDIXIAN)DEJIEDIDIANZUBUDAYU4Ω。


起重机械主要电气保护系统的功能与要求

欧洲杯外围WEILEBAOHUDIANQISHEBEIJIGONGZUORENYUANDEANQUAN,QIZHONGJIDIANQIKONGZHIXITONGDOUYAOSHEZHIBIYAODEDIANQIBAOHUCUOSHI,YIBANYOUZHUGELIKAIGUAN,DUANLUBAOHUHESHIYABAOHU,LINGWEIBAOHU,DIANDONGJIDEGUOZAIBAOHU、CHAOSUBAOHU,JINJIDUANDIANKAIGUAN,TONGDAOKOULIANSUOBAOHU,YIJIJIEDIBAOHU、DIANQIJUEYUANDENG。

电器保护系统功能类别

YI,GELIKAIGUAN

ER,DUANLUBAOHU

SAN,SHIYA,QIANYAHEBAOHU

SI,LINGWEIBAOHU

五,过载保护

LIU,CHAOSUBAOHU

QI,JINJIDUANDIANKAIGUAN

BA,TONGDAOKOUANQUANSUOBAOHU

JIU,ZHILIUDIANDONGJISHICIBAOHU

SHI,JIEDIBAOHU

十一,电气线路对地绝缘电阻

REMENTUIJIAN:

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