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三相短路接地線安裝指南

點擊次數:2758 更新時間:2019-12-28

三相短路接地線安裝指南
   地線國家規定技術標準

    (1)在各接線端子(zi)之間測量直流電阻,對于(yu)25mm、35mm、50mm、70mm、95mm、120mm的(de)各種截面,平均(jun)每米的(de)電阻值(zhi)應分別小于(yu)0.79、0.56、0.40、0.28、0.21、0.16,周(zhou)期不超(chao)過五年。

    (2)操作棒的工(gong)頻耐壓(ya)試驗,10KV、35KV、63KV、110KV、220KV接地棒分別(bie)(bie)要通(tong)過(guo)在45KV、95KV、175KV、220KV、440KV打耐壓(ya),保持(chi)一分鐘不(bu)擊穿。而330KV、500KV接地棒要分別(bie)(bie)在380KV、580KV上打耐壓(ya),保持(chi)五(wu)分鐘不(bu)擊穿。

    使用方法:首(shou)先核實(shi)接(jie)(jie)(jie)(jie)地(di)(di)(di)(di)棒(bang)的(de)(de)電(dian)壓等級與操作設備的(de)(de)電(dian)壓等級是否一致。如果一致則需要開始安裝,將接(jie)(jie)(jie)(jie)地(di)(di)(di)(di)軟銅線(xian)分相上(shang)(shang)(shang)的(de)(de)雙眼接(jie)(jie)(jie)(jie)線(xian)端(duan)子(zi)固定在接(jie)(jie)(jie)(jie)地(di)(di)(di)(di)棒(bang)上(shang)(shang)(shang)的(de)(de)接(jie)(jie)(jie)(jie)電(dian)夾(接(jie)(jie)(jie)(jie)電(dian)夾有(you)固定式和活動式)相應位置上(shang)(shang)(shang),將接(jie)(jie)(jie)(jie)地(di)(di)(di)(di)線(xian)合(he)相上(shang)(shang)(shang)的(de)(de)銅接(jie)(jie)(jie)(jie)線(xian)端(duan)子(zi)固定在接(jie)(jie)(jie)(jie)地(di)(di)(di)(di)夾或地(di)(di)(di)(di)針上(shang)(shang)(shang),構成一套完整的(de)(de)接(jie)(jie)(jie)(jie)地(di)(di)(di)(di)線(xian)。安裝好后要掛接(jie)(jie)(jie)(jie)地(di)(di)(di)(di)線(xian),掛接(jie)(jie)(jie)(jie)地(di)(di)(di)(di)線(xian)時先連結接(jie)(jie)(jie)(jie)地(di)(di)(di)(di)夾,后接(jie)(jie)(jie)(jie)接(jie)(jie)(jie)(jie)電(dian)夾;拆(chai)除(chu)接(jie)(jie)(jie)(jie)地(di)(di)(di)(di)線(xian)時,必須按程序(xu)先拆(chai)接(jie)(jie)(jie)(jie)電(dian)夾,后拆(chai)接(jie)(jie)(jie)(jie)地(di)(di)(di)(di)夾。

短(duan)(duan)路(lu)(lu)接地線接地引導線標稱截面有:16、mm2;,、25mm2;,、35mm2;,50mm2;,70mm2;,95mm2;可根據(ju)電(dian)壓等級及額定短(duan)(duan)路(lu)(lu)電(dian)流(liu)大小進行選擇

    攜帶型短(duan)路(lu)接地(di)(di)棒(線(xian)(xian)(xian)(xian)(xian)),掛鉤螺(luo)(luo)(luo)旋(xuan)壓(ya)(ya)緊(jin)(jin)式接地(di)(di)線(xian)(xian)(xian)(xian)(xian)應(ying)妥善保管。每次使(shi)用前,均(jun)應(ying)仔(zi)細檢查大平(ping)口螺(luo)(luo)(luo)旋(xuan)壓(ya)(ya)緊(jin)(jin)式接地(di)(di)線(xian)(xian)(xian)(xian)(xian),鴨嘴式撞擊線(xian)(xian)(xian)(xian)(xian)夾接地(di)(di)線(xian)(xian)(xian)(xian)(xian)是(shi)(shi)否(fou)完好,軟銅線(xian)(xian)(xian)(xian)(xian)無(wu)祼露,螺(luo)(luo)(luo)母不(bu)(bu)松脫,否(fou)則(ze)不(bu)(bu)得(de)(de)使(shi)用。高(gao)(gao)壓(ya)(ya)接地(di)(di)線(xian)(xian)(xian)(xian)(xian)導(dao)線(xian)(xian)(xian)(xian)(xian)護(hu)層不(bu)(bu)出(chu)現(xian)爆裂(lie)皺折,導(dao)線(xian)(xian)(xian)(xian)(xian)解體檢查,其損傷的導(dao)線(xian)(xian)(xian)(xian)(xian)股數不(bu)(bu)應(ying)該超過1%,則(ze)認為試驗通(tong)過。在(zai)實際進行(xing)使(shi)用的時候,我們要注意就(jiu)(jiu)此三(san)相(xiang)短(duan)路(lu)不(bu)(bu)接地(di)(di)或者是(shi)(shi)三(san)相(xiang)分別單獨接地(di)(di)也都(dou)會顯得(de)(de)非常的可靠(kao),也正(zheng)是(shi)(shi)因為如此,高(gao)(gao)壓(ya)(ya)接地(di)(di)線(xian)(xian)(xian)(xian)(xian)說白了就(jiu)(jiu)是(shi)(shi)保護(hu)工作人員免遭(zao)傷害(hai)有效的措(cuo)施。

所(suo)需設備(bei):

    接地棒3個、三相短路接地線(三根頭線、一根尾線)、地夾一個。
    首先將接地棒頭部螺絲取下(共2個),將三相短路接地線頭線部放在接地棒上,與螺絲口重合,然后安裝上螺絲;三個接地棒分別進行此項操作。如圖1、圖2所示;
    其次將地夾螺絲取下,尾線安裝于地夾之上,安裝上螺絲,終完成安裝,如圖3所示