辽宁11选5

新黎明科创控股有限辽宁11选5详情

工地用一级防爆配电箱重复接地操作(配图)

发布时间:2019-03-25 14:03:00 查看次数:

工地用一级防爆配电箱配电系统介绍:


辽宁11选51、GONGDIYONGYIJIFANGBAOPEIDIANXIANGDEPEIDIANXITONGFENWEITN-C-S,TN-S;


2、TN-C-SXITONGSONGCHUDESHIPENXIAN,DAOYONGHUQIANXUXIANZHONGFUJIEDI,ZAIFENWEINHEPE,NXIANBUYUNXUZAIJIEDI,PEXIANKEYIZAIJIEDI;


3、TN-S,TUIJIANDEZUOFASHIZONGJIEDIXIANGLIANJIEDAOJIEDIWANGSHANG,ZAIYOUZONGJIEDIXIANGDAODIANQIJUDEPEMUXIAN,ZAIYOUPEMUXIANYIDIANJIEDAONMUXIAN,NMUXIANZAIYUBIANYAQIZHONGXINGDIANLIANJIE;


4、CHUCIYIWAI,NXIANBUYINGZAIYUPEXIANLIANJIE,JIBUYUNXUZAIJIEDI;


辽宁11选55、PEXIANKEYIDUODIANJIEDI,DUOYIDIANHAO。


防爆配电箱接地线截面相关参数.jpg


根据上图,可以对工地用一级防爆配电箱做如下解释:


一、先认识下图纸上的相关符号:


辽宁11选51、KW(QIANWA)DEFUHAOJIUSHIZHIYOUGONGGONGLVP;


辽宁11选52、KVA(QIANFUAN)DEFUHAOSHIZHIJIUSHISHIZAIGONGLVS;


辽宁11选53、HAIYOUKvar(QIANFA)DEFUHAOSHIZHIWUGONGGONGLVQ;


4、SHIZAIGONGLVBAOHANLEWUGONGGONGLVHEYOUGONGGONGLV;


5、CONGSHANGKEZHI:ZHIYOUWUGONGGONGLVWEILINGSHI(CHUNDIANZUFUZAI),SCAIDENGYUP,TONGCHANGLIANGZHEYAOHUANSUANSHIBUKEYIDE,YINWEIZHEISHI2GEBUTONGDEWULILIANG;


二、工地用一级防爆配电箱重复接地要用到的计算:


1、ZAIDANXIANG:

 

S=UI ,P=UI*COSφ,SHIZHONG:COSφ:GONGLVYINSHU;


2、ZAISANXIANG:

 

S=1.732UI ,P=1,732UI*COSφ,SHIZHONG P:YOUGONGGONGLV,U*I:SHIZAIGONGLV,COSφ:GONGLVYINSHU;


DANGDUICHENGSANXIANGDIANLUZHONG:P=1.732*UICOSφ;

辽宁11选5  

辽宁11选5ZAISANXIANGBUDUICHENGDIANLUZHONG:PZONG=Pa+Pb+Pc;


3、JUGELI:


辽宁11选5ZAIXUANZEBIANYAQIRONGLIANGDESHIHOU,CHULEDIANDONGJIRONGLIANGWAIHAIYINGKAOLVDIANJIDEGONGLVYINSHU,RUGONGLVYINSHUWEI0.9,NAMEBIANYAQIDERONGLIANGJIUYAODAYUDIANDONGJIRONGLIANGBAIFENZHISHI,HAIYINGZENGJIAYIXIEANQUANRONGLIANGJIUXING。


ZHU:


辽宁11选5JUTIXUYAOKANNIDEFUSHEFANGSHIYIJIFUSHEHUANJINGLAIQUEDINGDE,XIANGXIDEKEYIQUKAN05D1 P89YEYIHOUDEXIANGGUANSHUJU。


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