屏蔽電纜能做零線用嗎?
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來源：金環宇電纜發布日期：2021-07-07 11:03
回答是否認的，緣故(gu)以下：
在三(san)(san)相(xiang)四線(xian)(xian)(xian)(xian)制供(gong)電(dian)(dian)系(xi)(xi)統路(lu)線(xian)(xian)(xian)(xian)中，變電(dian)(dian)器低電(dian)(dian)壓側電(dian)(dian)磁線(xian)(xian)(xian)(xian)圈(quan)按(an)星形接法(fa)，星觸(chu)點(dian)的(de)導(dao)線(xian)(xian)(xian)(xian)為零(ling)(ling)線(xian)(xian)(xian)(xian)。別的(de)三(san)(san)個抽頭(tou)為火(huo)線(xian)(xian)(xian)(xian)零(ling)(ling)線(xian)(xian)(xian)(xian)A,B,C三(san)(san)相(xiang)。從火(huo)線(xian)(xian)(xian)(xian)零(ling)(ling)線(xian)(xian)(xian)(xian)排出的(de)電(dian)(dian)流量(liang)(liang)經用電(dian)(dian)量(liang)(liang)機(ji)器設(she)(she)備(bei)(bei)與(yu)零(ling)(ling)線(xian)(xian)(xian)(xian)組成供(gong)電(dian)(dian)系(xi)(xi)統控制回路(lu)。一(yi)切(qie)正常工作中時火(huo)線(xian)(xian)(xian)(xian)零(ling)(ling)線(xian)(xian)(xian)(xian)注入用電(dian)(dian)量(liang)(liang)機(ji)器設(she)(she)備(bei)(bei)和經用電(dian)(dian)量(liang)(liang)機(ji)器設(she)(she)備(bei)(bei)排出至(zhi)零(ling)(ling)線(xian)(xian)(xian)(xian)的(de)電(dian)(dian)流量(liang)(liang)應(ying)當(dang)相(xiang)同(tong)，不(bu)然會導(dao)致供(gong)電(dian)(dian)系(xi)(xi)統路(lu)線(xian)(xian)(xian)(xian)中性線(xian)(xian)(xian)(xian)偏移，某兩相(xiang)相(xiang)電(dian)(dian)壓上升。因此 規定零(ling)(ling)線(xian)(xian)(xian)(xian)的(de)電(dian)(dian)纜線(xian)(xian)(xian)(xian)徑在三(san)(san)相(xiang)四線(xian)(xian)(xian)(xian)制供(gong)電(dian)(dian)系(xi)(xi)統路(lu)線(xian)(xian)(xian)(xian)應(ying)該(gai)與(yu)火(huo)線(xian)(xian)(xian)(xian)零(ling)(ling)線(xian)(xian)(xian)(xian)等徑。
電(dian)纜線(xian)(xian)中的(de)(de)屏(ping)蔽(bi)電(dian)線(xian)(xian)的(de)(de)功(gong)(gong)效(xiao)是避(bi)免 線(xian)(xian)芯被干擾信號，不具有載流功(gong)(gong)效(xiao)，因此 不可以做為(wei)供電(dian)系統(tong)路(lu)(lu)線(xian)(xian)零線(xian)(xian)應用。此外屏(ping)蔽(bi)電(dian)線(xian)(xian)在安裝上規定應靠譜(pu)接地裝置(zhi)，線(xian)(xian)芯路(lu)(lu)線(xian)(xian)絕緣層毀壞走電(dian)電(dian)流量可由(you)屏(ping)蔽(bi)電(dian)線(xian)(xian)接地裝置(zhi)后靠譜(pu)導進地面(mian)，減少走電(dian)路(lu)(lu)線(xian)(xian)電(dian)勢差。
因(yin)此 電(dian)(dian)纜線(xian)的屏蔽(bi)電(dian)(dian)線(xian)不可以(yi)做(zuo)零線(xian)應(ying)用，由于它是(shi)極不安(an)全(quan)又不符電(dian)(dian)纜的安(an)全(quan)性應(ying)用規章(zhang)。電(dian)(dian)流(liu)量不可以(yi)走(zou)屏蔽(bi)網或鋼鎧!會起火短路故(gu)障，會失火短路，連電(dian)(dian)等(deng)等(deng)問(wen)題。
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