的優勢：

　　1.電阻率低：鋁芯電纜的電(dian)阻率比銅芯電(dian)線電(dian)纜約(yue)高1.68倍。

　　2.延展(zhan)(zhan)性好(hao)：銅(tong)合金(jin)的延展(zhan)(zhan)率(lv)為(wei)20~40%,電(dian)工用銅(tong)的延展(zhan)(zhan)率(lv)在(zai)30%以上，而鋁合金(jin)僅為(wei)18%。

　　3.強(qiang)度高(gao)(gao)：常溫下的允(yun)許應力，銅比(bi)鋁分別高(gao)(gao)出7~28%。特(te)別是高(gao)(gao)溫下的應力，兩者相(xiang)差更是甚遠。

　　4.抗疲勞(lao)：鋁材反(fan)復折彎易斷裂，銅則不易。彈性指標方面，銅芯電(dian)線電(dian)纜的銅也比鋁高約1.7~1.8倍。

　　5.穩定性(xing)好，耐腐蝕(shi)：銅芯抗氧化(hua)，耐腐蝕(shi)，而(er)鋁芯容易受氧化(hua)和腐蝕(shi)。

　　6.載流量(liang)大：由于電阻(zu)率低，同截面的(de)銅芯電線電纜要比鋁芯電纜允許(xu)的(de)載流量(liang)(能(neng)夠通過的(de)大電流)高(gao)30%左右

　　7.電(dian)(dian)(dian)(dian)(dian)壓損失(shi)低：由于銅(tong)芯(xin)電(dian)(dian)(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)(dian)(dian)纜(lan)的(de)電(dian)(dian)(dian)(dian)(dian)阻率低，在同截面流(liu)過相同電(dian)(dian)(dian)(dian)(dian)流(liu)的(de)情況下。銅(tong)芯(xin)電(dian)(dian)(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)(dian)(dian)纜(lan)的(de)電(dian)(dian)(dian)(dian)(dian)壓降小(xiao)。因(yin)此，同樣的(de)輸(shu)電(dian)(dian)(dian)(dian)(dian)距離，能保證較高的(de)電(dian)(dian)(dian)(dian)(dian)壓質量；或者(zhe)說，在允許的(de)電(dian)(dian)(dian)(dian)(dian)壓降條件下，銅(tong)芯(xin)電(dian)(dian)(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)(dian)(dian)纜(lan)輸(shu)電(dian)(dian)(dian)(dian)(dian)能達到較遠的(de)距離，即(ji)供電(dian)(dian)(dian)(dian)(dian)覆蓋(gai)面積(ji)大，有利(li)于網(wang)絡(luo)的(de)規劃，減(jian)少(shao)供電(dian)(dian)(dian)(dian)(dian)點(dian)的(de)設置(zhi)數量。

　　8.發熱(re)溫度低：在同樣的電流下，同截(jie)面的銅芯(xin)電線電纜(lan)的發熱(re)量比(bi)鋁芯(xin)電纜(lan)小得多，使得運行(xing)更(geng)安全(quan)。

　　9.能(neng)耗低(di)：由(you)于(yu)銅(tong)的電(dian)阻率低(di)，相比鋁電(dian)纜而言，銅(tong)芯電(dian)線電(dian)纜的電(dian)能(neng)損耗低(di)，這(zhe)是(shi)顯而易見(jian)的。這(zhe)有(you)利于(yu)提高發(fa)電(dian)利用率和(he)保護環境(jing)。

　　10.抗(kang)氧(yang)化(hua)，耐腐蝕：銅(tong)芯電線電纜的(de)連接(jie)(jie)頭(tou)性能穩定(ding)(ding)，不會由(you)于氧(yang)化(hua)而發生(sheng)事(shi)故。鋁芯電纜的(de)接(jie)(jie)頭(tou)不穩定(ding)(ding)時常會由(you)于氧(yang)化(hua)使接(jie)(jie)觸電阻(zu)增大，發熱而發生(sheng)事(shi)故。因此，事(shi)故率比銅(tong)芯電線電纜大得多。