擴(kuo)(kuo)徑(jing)導(dao)線(xian)是以滿足技術條件的常規導(dao)線(xian)規格為(wei)基準，采取擴(kuo)(kuo)大導(dao)線(xian)外(wai)徑(jing)技術，在保證(zheng)電暈所要求的導(dao)線(xian)外(wai)徑(jing)前提(ti)下，減(jian)少導(dao)線(xian)的鋁截面，從而減(jian)少導(dao)線(xian)的總(zong)重(zhong)量，減(jian)少鐵塔(ta)荷載和結(jie)構(gou)重(zhong)量，極大地降低線(xian)路造價(jia)。擴(kuo)(kuo)徑(jing)導(dao)線(xian)在超高(gao)壓(ya)和特高(gao)壓(ya)輸(shu)電工(gong)程(cheng)中(zhong)有(you)很大的應(ying)用(yong)空(kong)間，尤其在高(gao)海(hai)拔地區有(you)著(zhu)更為(wei)廣闊的前景。

    擴徑導線(xian)(xian)(xian)(xian)是在普通(tong)的(de)鋼芯絞(jiao)(jiao)線(xian)(xian)(xian)(xian)基礎(chu)上(shang)開發的(de)一(yi)種(zhong)新型(xing)特(te)殊導線(xian)(xian)(xian)(xian)，是目(mu)前為止(zhi)外(wai)徑最大的(de)架空導線(xian)(xian)(xian)(xian)。擴徑鋼芯鋁(lv)絞(jiao)(jiao)線(xian)(xian)(xian)(xian)也叫擴徑空心(xin)母線(xian)(xian)(xian)(xian)，由多層(ceng)鋁(lv)線(xian)(xian)(xian)(xian)反(fan)向絞(jiao)(jiao)合而(er)成，中間為圓形中空結構。產(chan)品(pin)適用(yong)于(yu)高低壓(ya)輸電(dian)線(xian)(xian)(xian)(xian)中電(dian)廠及變電(dian)站(zhan)配(pei)電(dian)線(xian)(xian)(xian)(xian)路(lu)，使(shi)用(yong)它可以(yi)將(jiang)絞(jiao)(jiao)線(xian)(xian)(xian)(xian)外(wai)徑擴大，減小(xiao)絞(jiao)(jiao)線(xian)(xian)(xian)(xian)表面(mian)的(de)電(dian)場強度，減少電(dian)暈損失(shi)，大幅度提高導線(xian)(xian)(xian)(xian)的(de)使(shi)用(yong)效率(lv)，減少對無(wu)線(xian)(xian)(xian)(xian)電(dian)的(de)干擾，實現較(jiao)(jiao)大擴徑率(lv)，結構穩定，自支撐性能(neng)好，能(neng)夠避免跳股等(deng)缺陷的(de)發生。產(chan)品(pin)性能(neng)特(te)點：線(xian)(xian)(xian)(xian)膨脹系數較(jiao)(jiao)好，電(dian)暈損失(shi)小(xiao)，有良好的(de)散熱性。

    遼寧大元(yuan)(yuan)電(dian)纜(lan)制(zhi)(zhi)造(zao)有限(xian)公(gong)司(si)位于鐵(tie)(tie)嶺鐵(tie)(tie)西工(gong)業園(yuan)區(qu)，成立于1989年6月(yue)18日，原(yuan)廠名為“鐵(tie)(tie)嶺大元(yuan)(yuan)電(dian)纜(lan)有限(xian)公(gong)司(si)”。為了適(shi)應市(shi)場需求(qiu)，同時公(gong)司(si)規模的不斷擴大和發展，于2012年6月(yue)更名為“遼寧大元(yuan)(yuan)電(dian)纜(lan)制(zhi)(zhi)造(zao)有限(xian)公(gong)司(si)”，占地面積18000平方米(mi)，是電(dian)線電(dian)纜(lan)產(chan)品(pin)的專業生產(chan)制(zhi)(zhi)造(zao)商。