擴(kuo)徑(jing)(jing)導線在超高(gao)壓(ya)和特高(gao)壓(ya)輸(shu)(shu)電(dian)工程中有很(hen)大的應用(yong)空間，尤其在高(gao)海拔(ba)地區(qu)有著更為廣闊(kuo)的前(qian)景。擴(kuo)徑(jing)(jing)鋼芯鋁絞線LGKK適用(yong)于(yu)高(gao)低(di)壓(ya)輸(shu)(shu)電(dian)線中電(dian)廠及變電(dian)站配(pei)電(dian)線路。

擴徑導線(xian)的(de)產品用(yong)途(tu)：本產品適用(yong)于(yu)高低(di)壓輸電(dian)(dian)(dian)線(xian)中電(dian)(dian)(dian)廠及變電(dian)(dian)(dian)站(zhan)配電(dian)(dian)(dian)線(xian)路、母線(xian)等。減少電(dian)(dian)(dian)暈損失，節(jie)約有色金屬。

擴(kuo)徑導線的(de)性能特(te)點(dian):線膨脹系數較(jiao)好，電暈損失小，有良好的(de)散熱性。

擴(kuo)徑導(dao)(dao)線(xian)是以滿足技術(shu)條件的(de)常規導(dao)(dao)線(xian)規格(ge)為(wei)基準(zhun)，采(cai)取擴(kuo)大導(dao)(dao)線(xian)外徑技術(shu)，在保證電暈所要求(qiu)的(de)導(dao)(dao)線(xian)外徑前提下(xia)，減(jian)少(shao)(shao)導(dao)(dao)線(xian)的(de)鋁截面(mian)，從而減(jian)少(shao)(shao)導(dao)(dao)線(xian)的(de)總重量(liang)，減(jian)少(shao)(shao)鐵塔荷載和(he)結構重量(liang)，極大地(di)降低線(xian)路造價。

當線(xian)(xian)(xian)路(lu)的(de)(de)電(dian)壓超過220kv時，為了降低線(xian)(xian)(xian)路(lu)電(dian)抗和電(dian)暈損(sun)耗，通常采用(yong)擴徑(jing)導線(xian)(xian)(xian)。擴徑(jing)導線(xian)(xian)(xian)就是(shi)把普通的(de)(de)導線(xian)(xian)(xian)做(zuo)成中空（里面用(yong)多股鋼芯線(xian)(xian)(xian)和支撐(cheng)層做(zuo)成）或者減(jian)少其中部分層單線(xian)(xian)(xian)數(shu)量（使該層單線(xian)(xian)(xian)間(jian)存在一定數(shu)量空隙），最終達(da)到增加導線(xian)(xian)(xian)的(de)(de)等效半徑(jing)的(de)(de)目的(de)(de)。