的優勢：

　　1.電阻率低：鋁芯電纜的電(dian)(dian)阻率比銅(tong)芯電(dian)(dian)線(xian)電(dian)(dian)纜約高1.68倍。

　　2.延(yan)展(zhan)性好：銅合金(jin)的延(yan)展(zhan)率為20~40%,電工(gong)用銅的延(yan)展(zhan)率在30%以(yi)上，而(er)鋁(lv)合金(jin)僅為18%。

　　3.強度高(gao)(gao)：常溫下的(de)允許應(ying)力(li)(li)，銅比鋁分別高(gao)(gao)出(chu)7~28%。特別是(shi)高(gao)(gao)溫下的(de)應(ying)力(li)(li)，兩(liang)者相差(cha)更(geng)是(shi)甚遠。

　　4.抗疲勞：鋁(lv)材反復折彎(wan)易(yi)(yi)斷裂，銅(tong)(tong)則不(bu)易(yi)(yi)。彈性(xing)指標方面，銅(tong)(tong)芯(xin)電(dian)線電(dian)纜(lan)的銅(tong)(tong)也比(bi)鋁(lv)高約1.7~1.8倍。

　　5.穩(wen)定性好，耐(nai)腐(fu)蝕(shi)：銅芯抗氧化(hua)，耐(nai)腐(fu)蝕(shi)，而鋁(lv)芯容易受氧化(hua)和腐(fu)蝕(shi)。

　　6.載流量大：由于(yu)電(dian)阻(zu)率低，同截面的(de)銅(tong)芯(xin)電(dian)線電(dian)纜要比鋁芯(xin)電(dian)纜允許(xu)的(de)載流量(能夠通過的(de)大電(dian)流)高(gao)30%左(zuo)右

　　7.電(dian)(dian)(dian)(dian)(dian)壓(ya)損失低(di)：由于(yu)銅(tong)芯電(dian)(dian)(dian)(dian)(dian)線電(dian)(dian)(dian)(dian)(dian)纜的(de)電(dian)(dian)(dian)(dian)(dian)阻率低(di)，在同(tong)(tong)截面流過相同(tong)(tong)電(dian)(dian)(dian)(dian)(dian)流的(de)情況(kuang)下。銅(tong)芯電(dian)(dian)(dian)(dian)(dian)線電(dian)(dian)(dian)(dian)(dian)纜的(de)電(dian)(dian)(dian)(dian)(dian)壓(ya)降小。因此，同(tong)(tong)樣的(de)輸電(dian)(dian)(dian)(dian)(dian)距(ju)離，能保證較高的(de)電(dian)(dian)(dian)(dian)(dian)壓(ya)質量；或者說，在允許(xu)的(de)電(dian)(dian)(dian)(dian)(dian)壓(ya)降條件下，銅(tong)芯電(dian)(dian)(dian)(dian)(dian)線電(dian)(dian)(dian)(dian)(dian)纜輸電(dian)(dian)(dian)(dian)(dian)能達(da)到較遠的(de)距(ju)離，即供(gong)電(dian)(dian)(dian)(dian)(dian)覆蓋面積大，有利于(yu)網絡的(de)規劃，減少供(gong)電(dian)(dian)(dian)(dian)(dian)點的(de)設置(zhi)數量。

　　8.發熱溫度低(di)：在同樣的電(dian)流下，同截面的銅芯電(dian)線電(dian)纜(lan)(lan)的發熱量比鋁(lv)芯電(dian)纜(lan)(lan)小得多，使(shi)得運行更安全。

　　9.能耗低：由于銅的電(dian)(dian)阻率(lv)低，相比鋁電(dian)(dian)纜而言，銅芯(xin)電(dian)(dian)線(xian)電(dian)(dian)纜的電(dian)(dian)能損耗低，這是顯而易(yi)見的。這有利于提(ti)高(gao)發電(dian)(dian)利用率(lv)和(he)保護環(huan)境(jing)。

　　10.抗氧化(hua)，耐腐蝕：銅芯(xin)電(dian)(dian)線電(dian)(dian)纜的(de)連接頭(tou)性能穩定，不會(hui)由(you)于氧化(hua)而發(fa)生事故。鋁芯(xin)電(dian)(dian)纜的(de)接頭(tou)不穩定時常會(hui)由(you)于氧化(hua)使接觸(chu)電(dian)(dian)阻增(zeng)大，發(fa)熱而發(fa)生事故。因此，事故率比銅芯(xin)電(dian)(dian)線電(dian)(dian)纜大得(de)多。