按用途分類：

擴(kuo)(kuo)(kuo)徑(jing)(jing)(jing)導(dao)(dao)(dao)線(xian)(xian)按(an)用(yong)途分為兩(liang)大類(lei)，一類(lei)擴(kuo)(kuo)(kuo)徑(jing)(jing)(jing)導(dao)(dao)(dao)線(xian)(xian)應(ying)(ying)用(yong)于變(bian)電(dian)(dian)(dian)(dian)站(zhan)，另(ling)一類(lei)擴(kuo)(kuo)(kuo)徑(jing)(jing)(jing)導(dao)(dao)(dao)線(xian)(xian)應(ying)(ying)用(yong)于輸(shu)電(dian)(dian)(dian)(dian)線(xian)(xian)路。輸(shu)電(dian)(dian)(dian)(dian)線(xian)(xian)路用(yong)擴(kuo)(kuo)(kuo)徑(jing)(jing)(jing)導(dao)(dao)(dao)線(xian)(xian)為了減小弧垂，降低塔高，擴(kuo)(kuo)(kuo)徑(jing)(jing)(jing)導(dao)(dao)(dao)線(xian)(xian)的(de)拉重比(bi)應(ying)(ying)與鋼芯鋁絞線(xian)(xian)相(xiang)當，所以此(ci)種(zhong)擴(kuo)(kuo)(kuo)徑(jing)(jing)(jing)導(dao)(dao)(dao)線(xian)(xian)必須(xu)有鋼芯。因(yin)為輸(shu)電(dian)(dian)(dian)(dian)線(xian)(xian)路用(yong)擴(kuo)(kuo)(kuo)徑(jing)(jing)(jing)導(dao)(dao)(dao)線(xian)(xian)必須(xu)采(cai)用(yong)張力架線(xian)(xian)，并且在張力放線(xian)(xian)過程中經過若干(gan)個滑車后要(yao)求(qiu)無跳股(gu)、松股(gu)現象，所以這(zhe)種(zhong)擴(kuo)(kuo)(kuo)徑(jing)(jing)(jing)導(dao)(dao)(dao)線(xian)(xian)結構穩定性(xing)的(de)要(yao)求(qiu)更高，此(ci)種(zhong)擴(kuo)(kuo)(kuo)徑(jing)(jing)(jing)導(dao)(dao)(dao)線(xian)(xian)擴(kuo)(kuo)(kuo)徑(jing)(jing)(jing)比(bi)不宜過大。變(bian)電(dian)(dian)(dian)(dian)站(zhan)用(yong)擴(kuo)(kuo)(kuo)徑(jing)(jing)(jing)導(dao)(dao)(dao)線(xian)(xian)的(de)主(zhu)要(yao)功用(yong)是將電(dian)(dian)(dian)(dian)流(liu)從(cong)變(bian)壓器引到輸(shu)電(dian)(dian)(dian)(dian)線(xian)(xian)路上，距離通常只有幾十米，不用(yong)考(kao)慮弧垂、張力等問題。由于變(bian)電(dian)(dian)(dian)(dian)站(zhan)母線(xian)(xian)的(de)分裂數(shu)通常小于線(xian)(xian)路導(dao)(dao)(dao)線(xian)(xian)分裂數(shu)，在兩(liang)者的(de)電(dian)(dian)(dian)(dian)磁噪(zao)聲(sheng)的(de)環境限值(zhi)相(xiang)近的(de)前提下，要(yao)求(qiu)變(bian)電(dian)(dian)(dian)(dian)站(zhan)母線(xian)(xian)的(de)外徑(jing)(jing)(jing)遠大于線(xian)(xian)路用(yong)導(dao)(dao)(dao)線(xian)(xian)，所以此(ci)類(lei)擴(kuo)(kuo)(kuo)徑(jing)(jing)(jing)導(dao)(dao)(dao)線(xian)(xian)的(de)特點是無鋼芯，但擴(kuo)(kuo)(kuo)徑(jing)(jing)(jing)比(bi)較大。

按結構特點分類：

按擴徑導(dao)線(xian)的結(jie)構特點，擴徑導(dao)線(xian)分為(wei)四大(da)類，分別為(wei)大(da)內(nei)徑鋁(lv)(lv)管支撐(cheng)型(xing)擴徑導(dao)線(xian)、小內(nei)徑鋁(lv)(lv)管填充(chong)型(xing)擴徑導(dao)線(xian)、疏絞型(xing)擴徑導(dao)線(xian)和高密度(du)聚乙烯支撐(cheng)型(xing)擴徑導(dao)線(xian)。

小(xiao)內(nei)(nei)徑(jing)鋁管(guan)填充(chong)型(xing)擴(kuo)徑(jing)導(dao)(dao)線(xian)(xian)。此種(zhong)擴(kuo)徑(jing)導(dao)(dao)線(xian)(xian)是(shi)在鋼芯外多個小(xiao)內(nei)(nei)徑(jing)鋁管(guan)（代(dai)替鋁單(dan)線(xian)(xian)）絞合而(er)成。大內(nei)(nei)徑(jing)鋁管(guan)支撐(cheng)型(xing)擴(kuo)徑(jing)導(dao)(dao)線(xian)(xian)。此種(zhong)擴(kuo)徑(jing)導(dao)(dao)線(xian)(xian)無鋼芯，是(shi)在大內(nei)(nei)徑(jing)鋁管(guan)上絞合多層鋁單(dan)線(xian)(xian)而(er)成。疏絞型(xing)擴(kuo)徑(jing)導(dao)(dao)線(xian)(xian)，高密度(du)聚乙烯支撐(cheng)型(xing)擴(kuo)徑(jing)導(dao)(dao)線(xian)(xian)。

遼寧(ning)大(da)元電(dian)(dian)(dian)纜(lan)(lan)(lan)制造有(you)限公司生產(chan)設備先進，檢測手(shou)段完善，其(qi)主要產(chan)品(pin)有(you)各種(zhong)規格的電(dian)(dian)(dian)力電(dian)(dian)(dian)纜(lan)(lan)(lan)、控制電(dian)(dian)(dian)纜(lan)(lan)(lan)、高低壓架(jia)空(kong)絕緣(yuan)電(dian)(dian)(dian)纜(lan)(lan)(lan)、扁電(dian)(dian)(dian)纜(lan)(lan)(lan)、鋼芯鋁絞線、地埋電(dian)(dian)(dian)纜(lan)(lan)(lan)、各種(zhong)阻燃耐火、低煙低鹵、低煙無(wu)鹵、屏蔽(bi)電(dian)(dian)(dian)纜(lan)(lan)(lan)及特種(zhong)電(dian)(dian)(dian)纜(lan)(lan)(lan)，各種(zhong)產(chan)品(pin)均按國家標準生產(chan)。