三相五線制電纜型號大全
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來源:金環宇電纜發布日(ri)期:2020-03-12 15:45
五(wu)芯電(dian)纜(lan)由5根相互絕緣的導線(xian)(xian)絞合而成。外有(you)加電(dian)纜(lan)保(bao)護(hu)層。常(chang)用於:三相五(wu)線(xian)(xian)制中。
三相(xiang)五線(xian)(xian)制(zhi)中五線(xian)(xian)指的是:3根(gen)(gen)相(xiang)線(xian)(xian)加(jia)一根(gen)(gen)地(di)線(xian)(xian)一根(gen)(gen)零(ling)線(xian)(xian)。一般用(yong)途最廣的低壓(ya)輸電(dian)方(fang)式(shi)是三相(xiang)四(si)線(xian)(xian)制(zhi),采用(yong)三根(gen)(gen)相(xiang)線(xian)(xian)加(jia)零(ling)線(xian)(xian)供(gong)電(dian),零(ling)線(xian)(xian)由變壓(ya)器中性點引出(chu)并(bing)接地(di),電(dian)壓(ya)為(wei)380/220V,取任意(yi)一根(gen)(gen)相(xiang)線(xian)(xian)加(jia)零(ling)線(xian)(xian)構成220V供(gong)電(dian)線(xian)(xian)路供(gong)一般家庭用(yong),三根(gen)(gen)相(xiang)線(xian)(xian)間電(dian)壓(ya)為(wei)380V,一般供(gong)電(dian)機(ji)使用(yong)。
五芯電纜線有哪些型號規格
我國電力 電纜(lan)的標(biao)稱截面積(ji)系列為(wei)2.5、4、6、10、16、25、35、50 、70、95、120、150、185、240、300、400、500、600mm2
纜芯(xin)分為五芯(xin)型(xing)、“3+2”芯(xin)型(xing)和“4+1”芯(xin)型(xing)。
“3+2”芯型
五芯電纜適用(yong)于TN-S和(he)TN-C-S系(xi)統(國(guo)內早期稱三(san)相五線(xian)(xian)制),其中(zhong)三(san)根線(xian)(xian)為工作線(xian)(xian)(L1/L2/L3或(huo)A/B/C),一根線(xian)(xian)為零線(xian)(xian)(N(NETUAL)線(xian)(xian)或(huo)中(zhong)性(xing)線(xian)(xian)),一個(ge)為保護(hu)線(xian)(xian)(PE/E線(xian)(xian)或(huo)地線(xian)(xian))。相對于TN-C或(huo)TT系(xi)統來(lai)說,TN-S和(he)TN-C-S零線(xian)(xian)取自變壓器中(zhong)性(xing)點,能降低不均衡(heng)電流(liu)對電路的(de)影響,PE線(xian)(xian)和(he)N線(xian)(xian)分(fen)開避免三(san)相不均衡(heng)時保護(hu)線(xian)(xian)帶電,且N線(xian)(xian)可以(yi)裝(zhuang)漏電保護(hu)器。所以(yi)目前所有民用(yong)電氣(qi)系(xi)統和(he)大部分(fen)工業電氣(qi)系(xi)統都采用(yong)TN-C-S或(huo)TN-S系(xi)統。