分(fen)(fen)(fen)裂導(dao)(dao)線(xian)(xian)(xian)(xian)是由三根或(huo)四根單芯導(dao)(dao)線(xian)(xian)(xian)(xian)經過某種工藝制造(zao)在一(yi)起的(de)一(yi)種可(ke)分(fen)(fen)(fen)裂的(de)導(dao)(dao)線(xian)(xian)(xian)(xian),或(huo)者稱(cheng)導(dao)(dao)線(xian)(xian)(xian)(xian)束, 這(zhe)種分(fen)(fen)(fen)裂導(dao)(dao)線(xian)(xian)(xian)(xian)不(bu)僅僅是形式上與常規(gui)導(dao)(dao)線(xian)(xian)(xian)(xian)不(bu)同(tong),由于分(fen)(fen)(fen)裂導(dao)(dao)線(xian)(xian)(xian)(xian)可(ke)使導(dao)(dao)線(xian)(xian)(xian)(xian)周(zhou)圍(wei)磁(ci)場分(fen)(fen)(fen)布改(gai)變(bian),從而(er)等效地增(zeng)大了(le)(le)導(dao)(dao)線(xian)(xian)(xian)(xian)半徑,減(jian)小(xiao)了(le)(le)導(dao)(dao)線(xian)(xian)(xian)(xian)電抗(kang)；同(tong)時(shi)也改(gai)變(bian)了(le)(le)導(dao)(dao)線(xian)(xian)(xian)(xian)周(zhou)圍(wei)的(de)電場分(fen)(fen)(fen)布, 使導(dao)(dao)線(xian)(xian)(xian)(xian)的(de)電納(na)也相應增(zeng)大.

 交流輸電線(xian)(xian)(xian)(xian)(xian)路的電暈損失主要與導(dao)(dao)(dao)(dao)(dao)(dao)線(xian)(xian)(xian)(xian)(xian)表(biao)面(mian)場(chang)(chang) 強(qiang)和天氣有關(guan),根據絕緣(yuan)水平(ping)要求(qiu)(qiu)確定了相(xiang)間距離 后(hou),導(dao)(dao)(dao)(dao)(dao)(dao)線(xian)(xian)(xian)(xian)(xian)表(biao)面(mian)場(chang)(chang)強(qiang)主要與導(dao)(dao)(dao)(dao)(dao)(dao)線(xian)(xian)(xian)(xian)(xian)分(fen)裂數、分(fen)裂間距和 子(zi)導(dao)(dao)(dao)(dao)(dao)(dao)線(xian)(xian)(xian)(xian)(xian)直(zhi)徑(jing)(jing)有關(guan),分(fen)裂數越多(duo),子(zi)導(dao)(dao)(dao)(dao)(dao)(dao)線(xian)(xian)(xian)(xian)(xian)直(zhi)徑(jing)(jing)越大, 表(biao)面(mian)場(chang)(chang)強(qiang)越小.擴(kuo)徑(jing)(jing)導(dao)(dao)(dao)(dao)(dao)(dao)線(xian)(xian)(xian)(xian)(xian)通過支撐鋁線(xian)(xian)(xian)(xian)(xian)疏繞的方(fang)式 擴(kuo)大了導(dao)(dao)(dao)(dao)(dao)(dao)線(xian)(xian)(xian)(xian)(xian)外(wai)徑(jing)(jing),這樣可減(jian)小導(dao)(dao)(dao)(dao)(dao)(dao)線(xian)(xian)(xian)(xian)(xian)表(biao)面(mian)的電場(chang)(chang)強(qiang)度和電暈放(fang)電,降(jiang)(jiang)低噪聲,減(jian)少對無線(xian)(xian)(xian)(xian)(xian)電的干(gan)擾.相(xiang) 對于常規導(dao)(dao)(dao)(dao)(dao)(dao)線(xian)(xian)(xian)(xian)(xian),擴(kuo)徑(jing)(jing)導(dao)(dao)(dao)(dao)(dao)(dao)線(xian)(xian)(xian)(xian)(xian)重(zhong)量較輕,安裝(zhuang)敷設(she)后(hou)的 塑蠕伸長減(jian)小,導(dao)(dao)(dao)(dao)(dao)(dao)線(xian)(xian)(xian)(xian)(xian)永(yong)久變形減(jian)少,在滿足輸送(song)容 量要求(qiu)(qiu)和環境保護指(zhi)標的前提下,可大幅降(jiang)(jiang)低線(xian)(xian)(xian)(xian)(xian)路 整體(ti)造價.簡單說(shuo)來(lai),擴(kuo)徑(jing)(jing)導(dao)(dao)(dao)(dao)(dao)(dao)線(xian)(xian)(xian)(xian)(xian)是從常規導(dao)(dao)(dao)(dao)(dao)(dao)線(xian)(xian)(xian)(xian)(xian)中抽取數股 鋁線(xian)(xian)(xian)(xian)(xian)后(hou)繞制而成的.