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自动化仪表接地知识与规范

更新时间: 2017年06月19日 所属类别: 知识百科 阅读量:

一、接地应用范围

conggongchengshejidejiaoduchufa,anbaohujiedi、gongzuojiedi(yibiaoxinhaohuilujiedi、benzhianquanxitongjiedi、pingbijiedi)、fangjingdianjiedihefangleijiedidengfenleijinxingguiding。zaijiedifangfashangcanzhaoleguoneiwaixiangguanguifan,guidingleyibiaojikongzhixitongjiediyudianqizhuanyedediyapeidianxitongjiediheyi,yibiaojikongzhixitongdebaohujiedi、yibiaoxinhaohuilujiedi,pingbijiedi、benzhianquanxitongjiedi、fangjingdianjiedihefangleijiedigongyongjiedizhuangzhi。

仪表接地规范图

二、接地分类

1、保护接地

yibiaojikongzhixitongdebaohujiediyudianqizhuanyedebaohujiedidedingyihegainianshixiangtongde,suoyiyouguanguidingyingdangshitongyide,yingdangandianqizhuanyedeyouguanbiaozhunguifanhefangfajinxingsheji。

百家乐官网tongchangxuyaozuojiedidezikongshebeiru: yibiaopan、yibiaoju、yibiaoxiang、dcs/plc/edsdejijuhecaozuozhan、yibiaogongdianshebei、dianlanqiaojia、chuanxianguan、jiexianhejikaizhuangdianlandekaizhuangceng,yijikongzhishineidefangjingdiandiban。

yibanlaijiang,shiyongdc24vweidianyuandexianchangyibiao、biansongqidengwuteshuyaoqiudekebuzuobaohujiedi。

保护接地的方法

xianchangyibiaoqiaojia、chuanxianguanyingmeige30myongjiedixianyuyijiedidejinshugoujianxianglian。tebieyaozhichudeshi,xianchangjiedijuebunengliyongchucun、shusongkeranxingjiezhidejinshushebei、guandaoyijiyuzhixiangliandejinshugoujianjinxingjiedi。

百家乐官网kongzhishideyibiaozikongshebei、jiju、yibiaopandengyingdandushezhibaohujiedihuiliupai。qijieditikeyudianlixitongdejieditigongyong。

百家乐官网yibiaobaohujiedilianjiexianbiaoshiyanseweilvse。

2、工作接地

yibiaojikongzhixitonggongzuojiedibushiyongyuyibiaojikongzhixitongneibudedianlubandejiedi。zhengquedejiedishixiaochuganraodezhongyaocuoshi。yibiaoxinhaofengelixinhaoyufeigelixinhao,jiedidefangshiheyuanzebuyiyang。

2.1信号回路接地

百家乐官网zaifeigelidexinhaoxitongzhong,yingjianliyigetongyidexinhaocankaodian。jijinxingxinhaohuilujiedi。tongchangweizhiliudianyuandefujijiedi。shiyongfeigelidexinhaoxitongshizaishejizhongyibandeshouxuanfangfa。zaiyunxingshi,xitongshoudaoganraodeqingkuangjiqishaojian。

zaigelidexinhaoxitongzhong,gelixinhaokebujiedi。zheilizhidegelishimeiyigeshuru/shuchuxinhaoyuqitashurushuchuxinhaodedianlushijueyuande。zuodaodianyuanduli、xianghugeli、cankaodianfukong。zaihuilujiaoduodexitong,buyaoqingyishiyongzheizhongfangfa。

jiedixianyansebiaoshiweihuang/lvxian。

2.2屏蔽接地

百家乐官网dianlandepingbiceng、pairaoxianyingzuopingbijiedi。

百家乐官网zaiqiangleijiqu,shiwaijiakongbudaipingbideputongduoxindianlan,beiyongxinyingpingbijiedi。zhuyaoshiweilebimianleidianzaixinhaoxianluganyingchugaodianya。

百家乐官网xianchangjiexianxiangnei,duanziliangcededianlanpingbixianyingzaixiangneijinxingkuajie。

tongyixinhaohuilu,tongyipingbicengyinggaidandianjiedi。

yibanpingbijiediyingzaikongzhishiyicejiedi。

jiedixianyansebiaoshiweihuang/lvxian。

2.3本质安全接地

benzhianquanxitongjieditongchangtaolundeshiqinashianquanzhajiedi。congdianqijiexianshang,qinashianquanzhadebenzhianquanxitongjiediyuyibiaoxinhaohuilujiedishifenbukaide。danbenanxitongjiedidegongzuoyuanlihezuoyongyuyibiaogongzuojiedibutong,leisiyushebeibaohujiedi。

百家乐官网qinaanquanzhadehuiliupaibixuyuzhiliudianyuangonggongduanxianglian(zhuyaoshibaozhengdangdianyuanguzhangshinenggouduiweixianchangsuojinxingbaohu)。qihuiliupaihuodaoguizuobenanjiedi。

zaikongzhineiyingshezhibenanjiedihuiliupai。

jiedixianyansebiaoshiweilan/lvxian。

2.4fangleijiediyibiaogongdianxitongdefangleibaohujijiedilianjieyoudianqizhuanyeanyouguanguidingshishi,suoyijinguidingleyibiaofangleijiedideneirong。

自动化仪表接地知识图

三、接地方法

1、保护接地

百家乐官网yibiaojikongzhixitongdebaohujiedishuyudiyapeidianxitongjiedi,suoyiyingandianqizhuanyedeyouguanbiaozhunguifanhefangfajinxing,bingyingjierudianqizhuanyedediyapeidianxitongjiediwang,jidengdianweigongyongjiediwang。

genjuguojiabiaozhungb50057《jianzhuwufangleishejiguifan》,“dengdianweilianjie(equipotential bonding)”dedingyiwei: jiangfenkaideshebei、zhudaodianwutiyongdaotihuodianyongbaohuqilianjieqilaiyishigeshebei、wutizhijiandedianweixiangdeng。

2、工作接地

百家乐官网xinhaojipingbijiedihuiliupai、benanjiedihuiliupaitongguogezidejiedixianjiezhigongzuojiedihuiliupai。

jiushiniandaiyilai,yixiexiangguanguidingdoumingquezhichu,dangdianqizhuanyebajianzhuwu、zhuangzhidejinshuzhicheng、gangjiegou、jinshuguandao、wudingjiagoudengquanbujiedihou,yibiaogongzuojiedikeyudianqizhuanyeheyongjiedizhuangzhi。zheiyangkejianxiaoleijishanghai,jiangdiganrao。dangdianqizhuanyeweizuozheizhongjiedilianjieshi,yibiaogongzuojiediyingcaiyongdandujieditijiedi。jieditiyingyudianqijieditibuxiaoyu5mdejuli。jiedidianzuyingbudayu4oumu。

suirangongzuojiedihebaohujiedizuizhongshilianjiezaiyiqide,danzheiliangleijiediyingfenbielianjiehuizong,buyinghunjie。

百家乐官网weishianquanzhanengzaibaijialeguanwangdianyuanguzhangshishixianduiweixianchangsuodebaohugongneng,anquanzhajiediyoubixuyubaijialeguanwanggongdiandezhongxianxianglian。zheijiujuedingleanquanzhajiedizuizhongyingshidianqixitongjiedi。anquanzhajiedihuiliupaiyubaijialeguanwanggongdiandezhongxianqishidianxiangliandezuijiandankekaodefangfashiyongdaoxianlianjie。

3、防静电接地

jingdianfangdiandetedianshigaodianya、xiaodianliu、shijianduan。yizhihuoxiaochujingdianfangdianyingcaiquduozhongcuoshi,chujinliangbimianchanshengjingdianwai,jishixiefangjingdianshiyouxiaoshouduanzhiyi。yibiaojikongzhixitongdefangjingdianjiedibijiaojiandan,jingdiandaotiduididexiefangdianzutongchangshi104~106ωshuliangjide,suoyi,henduoxiangyingdeguifan、ziliaoguidingyongyufangjingdianjiedidedianzuwei100ω。bingqie,fangjingdianjiediyingyuqitajiedixitonggongyongjiedizhuangzhi。

4、防雷接地

百家乐官网yibiaojikongzhixitongfangleijiedijinshiyibiaojikongzhixitongfangleigongchengdeyigezuchengbufen,jinduiyibiaojikongzhixitongfangleijiedizuochuyibanguiding。

guojiabiaozhungb50057《jianzhuwufangleishejiguifan》tigonglehenhaodeyijuhecankao,guidinglefangzhijilei、fangleidianganyinghefangleidianboqinru。

四、接地系统术语

jiedijihuoditi: mairudizhongzhijieyudadijiechubingyudadixingchengdianqilianjiedejinshudaoti,chengweijiedijihuoditi。

jiedizongganxian: yonglailianjiejiedijiyuzongjiedibandedaoti,chengweijiedizongganxian(dianqizhuanyechengweijiedizongxian)。

百家乐官网zongjiediban: weilefangbianlianjiegongzuojiedihuizongban、baohujiedihuizongbandenghejiedizongganxianershezhidejinshuban,chengweizongjiediban(dianqizhuanyechengweizongjiediduanzi、jiedimupai)。

百家乐官网baohujiedihuizongban: weibianyulianjiebaohujiediganxiandengershezhidejinshuban,chengweibaohujiedihuizongban。

gongzuojiedihuizongban: weibianyulianjiegongzuojiediganxianershezhidejinshuban,chengweigongzuojiedihuizongban。

jiediganxian: yongyulianjieduogetongleijiedihuiliupai、gexujiedideshebeiyujiedihuizongbandedaoxian,chengweijiediganxian。jiediganxianyeyongyulianjiezongjiedibanyugongzuojiedihuizongbanhuobaohujiedihuizongban。

五、接地连接方法

百家乐官网yibiaojikongzhixitongdejiedilianjiecaiyongfenleihuizong,zuizhonglianjiedefangshi。genjujutiyingyongqingkuang,baohujiedihuizongbanhezongjiedibankeyifenbieshezhi,yekeyiheyong。

六、接地电阻

yibiaojikongzhixitongdejiedidianzuweidianqizhuanyedediyapeidianxitongjiedizhuangzhidejiedidianzu,yinggenjudianqizhuanyeyouguanbiaozhunguifanqueding,yibanqingkuang,buyingdayu4ω。

jiedizhuangzhidejiedidianzudeshuzhidengyujiedizhuangzhiduididianyayutongguojiedijiliurudizhongdianliudebizhi。antongguojiedijidegongpinbaijialeguanwangdianliujisuanchudedianzuchengweizhupinjiedidianzu。

百家乐官网gb50057《jianzhuwufangleishejiguifan》guidinglefangleijiedidejiedidianzuweichongjijiedidianzu,guidingdedianxingzhiweibudayu10ω。genjugb50057guiding: fangleidianganyingdejiedizhuangzhiyinghedianqishebeijiedizhuangzhigongyong。

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