擴(kuo)(kuo)徑(jing)導線(xian)(xian)是以滿足技術(shu)條件的(de)(de)常規(gui)導線(xian)(xian)規(gui)格為基準，采取(qu)擴(kuo)(kuo)大(da)導線(xian)(xian)外徑(jing)技術(shu)，在(zai)(zai)保證電(dian)暈(yun)所要求(qiu)的(de)(de)導線(xian)(xian)外徑(jing)前提下，減(jian)少(shao)導線(xian)(xian)的(de)(de)鋁(lv)截面，從而(er)減(jian)少(shao)導線(xian)(xian)的(de)(de)總(zong)重量，減(jian)少(shao)鐵塔荷(he)載和結構重量，極大(da)地降(jiang)低線(xian)(xian)路(lu)造(zao)價。擴(kuo)(kuo)徑(jing)導線(xian)(xian)在(zai)(zai)超高(gao)壓和特高(gao)壓輸電(dian)工程中(zhong)有(you)很大(da)的(de)(de)應(ying)用(yong)空間，尤其(qi)在(zai)(zai)高(gao)海(hai)拔(ba)地區有(you)著更為廣闊(kuo)的(de)(de)前景。

擴(kuo)徑(jing)導(dao)線(xian)(xian)(xian)(xian)(xian)(xian)是在普通的鋼芯絞線(xian)(xian)(xian)(xian)(xian)(xian)基礎上開發的一種新型特殊導(dao)線(xian)(xian)(xian)(xian)(xian)(xian)，是目前為止外(wai)徑(jing)最(zui)大(da)的架空導(dao)線(xian)(xian)(xian)(xian)(xian)(xian)。擴(kuo)徑(jing)鋼芯鋁絞線(xian)(xian)(xian)(xian)(xian)(xian)也(ye)叫(jiao)擴(kuo)徑(jing)空心(xin)母線(xian)(xian)(xian)(xian)(xian)(xian)，由多(duo)層(ceng)鋁線(xian)(xian)(xian)(xian)(xian)(xian)反(fan)向絞合而成，中間為圓(yuan)形(xing)中空結構。產品(pin)適用于高低壓(ya)輸電(dian)(dian)線(xian)(xian)(xian)(xian)(xian)(xian)中電(dian)(dian)廠及變電(dian)(dian)站配(pei)電(dian)(dian)線(xian)(xian)(xian)(xian)(xian)(xian)路，使用它可以將絞線(xian)(xian)(xian)(xian)(xian)(xian)外(wai)徑(jing)擴(kuo)大(da)，減小絞線(xian)(xian)(xian)(xian)(xian)(xian)表面的電(dian)(dian)場強度，減少電(dian)(dian)暈損(sun)失，大(da)幅度提(ti)高導(dao)線(xian)(xian)(xian)(xian)(xian)(xian)的使用效率(lv)，減少對無線(xian)(xian)(xian)(xian)(xian)(xian)電(dian)(dian)的干(gan)擾(rao)，實現較(jiao)大(da)擴(kuo)徑(jing)率(lv)，結構穩(wen)定，自支(zhi)撐性(xing)能好(hao)，能夠避免跳(tiao)股等缺陷的發生(sheng)。產品(pin)性(xing)能特點(dian)：線(xian)(xian)(xian)(xian)(xian)(xian)膨脹系數較(jiao)好(hao)，電(dian)(dian)暈損(sun)失小，有良好(hao)的散熱性(xing)。