的優勢：

　　1.電阻率低：鋁芯電纜的電阻率比銅芯電線電纜約(yue)高1.68倍。

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

　　3.強度高：常溫下(xia)的允許(xu)應力，銅比(bi)鋁分(fen)別高出7~28%。特別是(shi)高溫下(xia)的應力，兩者相(xiang)差(cha)更是(shi)甚遠。

　　4.抗疲勞(lao)：鋁材反復折彎易(yi)斷裂，銅則(ze)不易(yi)。彈性指標方面，銅芯電線電纜(lan)的銅也比(bi)鋁高約1.7~1.8倍。

　　5.穩定性好，耐(nai)腐蝕(shi)(shi)：銅芯抗氧(yang)化，耐(nai)腐蝕(shi)(shi)，而鋁芯容(rong)易受氧(yang)化和腐蝕(shi)(shi)。

　　6.載(zai)(zai)流量(liang)大(da)：由于電阻率低，同截面的(de)銅芯電線(xian)電纜要比鋁芯電纜允許(xu)的(de)載(zai)(zai)流量(liang)(能夠通過的(de)大(da)電流)高30%左右

　　7.電(dian)(dian)(dian)(dian)(dian)(dian)壓損失低(di)：由于(yu)銅芯(xin)(xin)電(dian)(dian)(dian)(dian)(dian)(dian)線電(dian)(dian)(dian)(dian)(dian)(dian)纜的電(dian)(dian)(dian)(dian)(dian)(dian)阻率低(di)，在同截面(mian)流過相同電(dian)(dian)(dian)(dian)(dian)(dian)流的情況下。銅芯(xin)(xin)電(dian)(dian)(dian)(dian)(dian)(dian)線電(dian)(dian)(dian)(dian)(dian)(dian)纜的電(dian)(dian)(dian)(dian)(dian)(dian)壓降(jiang)小。因此，同樣(yang)的輸電(dian)(dian)(dian)(dian)(dian)(dian)距(ju)(ju)離，能(neng)保證較高(gao)的電(dian)(dian)(dian)(dian)(dian)(dian)壓質量；或(huo)者(zhe)說，在允許的電(dian)(dian)(dian)(dian)(dian)(dian)壓降(jiang)條件下，銅芯(xin)(xin)電(dian)(dian)(dian)(dian)(dian)(dian)線電(dian)(dian)(dian)(dian)(dian)(dian)纜輸電(dian)(dian)(dian)(dian)(dian)(dian)能(neng)達到較遠的距(ju)(ju)離，即(ji)供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)覆(fu)蓋(gai)面(mian)積大，有利于(yu)網絡(luo)的規劃(hua)，減(jian)少供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)點(dian)的設置數(shu)量。

　　8.發(fa)(fa)熱溫度低：在同樣的電流下，同截面的銅芯電線電纜的發(fa)(fa)熱量比鋁芯電纜小得多，使得運行更安全。

　　9.能耗低：由(you)于(yu)銅(tong)的電阻(zu)率(lv)低，相比鋁電纜(lan)(lan)而(er)言，銅(tong)芯電線電纜(lan)(lan)的電能損(sun)耗低，這是顯而(er)易見的。這有利于(yu)提高發電利用(yong)率(lv)和保護環境(jing)。

　　10.抗氧化(hua)，耐腐(fu)蝕：銅芯(xin)電線電纜的連接(jie)頭(tou)性能穩定，不(bu)會(hui)由于氧化(hua)而(er)發(fa)生事(shi)故。鋁芯(xin)電纜的接(jie)頭(tou)不(bu)穩定時常會(hui)由于氧化(hua)使(shi)接(jie)觸電阻增大，發(fa)熱而(er)發(fa)生事(shi)故。因此，事(shi)故率比銅芯(xin)電線電纜大得多。