銅芯電(dian)纜和鋁芯電(dian)纜的性(xing)能區別？

1.電阻率低(di)：鋁芯電纜(lan)的電阻率比銅芯電纜(lan)約高1.68倍。

2.延(yan)展(zhan)(zhan)性好：銅合金的(de)延(yan)展(zhan)(zhan)率(lv)為20~40%,電工(gong)用銅的(de)延(yan)展(zhan)(zhan)率(lv)在30%以上，而鋁合金僅為18%。

3.強度：常溫(wen)下(xia)的允許應力，銅(tong)比鋁(lv)分別(bie)高出7~28%。特別(bie)是高溫(wen)下(xia)的應力，兩者相差更是甚(shen)遠。

4.抗疲(pi)勞：鋁材反(fan)復折(zhe)彎易斷裂，銅(tong)則(ze)不(bu)易。彈性指標方(fang)面，銅(tong)也比鋁高約1.7~1.8倍。

5.穩定性好，耐腐(fu)蝕：銅芯(xin)抗氧化(hua)(hua)，耐腐(fu)蝕，而(er)鋁芯(xin)容易(yi)受氧化(hua)(hua)和腐(fu)蝕。

6.載流(liu)量(liang)大：由于電(dian)阻率低，同(tong)截面的銅芯(xin)電(dian)纜要比鋁芯(xin)電(dian)纜允許的載流(liu)量(liang)(能夠通過的電(dian)流(liu))高30%左右(you)。

7.電(dian)(dian)(dian)(dian)(dian)壓損失低：由于銅(tong)芯電(dian)(dian)(dian)(dian)(dian)纜(lan)的(de)電(dian)(dian)(dian)(dian)(dian)阻率低，在同截(jie)面流(liu)(liu)過相同電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)的(de)情況下。銅(tong)芯電(dian)(dian)(dian)(dian)(dian)纜(lan)的(de)電(dian)(dian)(dian)(dian)(dian)壓降(jiang)小。同樣的(de)輸(shu)電(dian)(dian)(dian)(dian)(dian)距(ju)離(li)，能(neng)保證較(jiao)高的(de)電(dian)(dian)(dian)(dian)(dian)壓質(zhi)量;在允許的(de)電(dian)(dian)(dian)(dian)(dian)壓降(jiang)條(tiao)件下，銅(tong)芯電(dian)(dian)(dian)(dian)(dian)纜(lan)輸(shu)電(dian)(dian)(dian)(dian)(dian)能(neng)達到較(jiao)遠的(de)距(ju)離(li)，即供(gong)電(dian)(dian)(dian)(dian)(dian)覆蓋面積大，有利于網絡(luo)的(de)規(gui)劃，減少供(gong)電(dian)(dian)(dian)(dian)(dian)點的(de)設(she)置數量。

8.發(fa)熱溫度低：在同樣(yang)的(de)電流下，同截面的(de)銅芯電纜的(de)發(fa)熱量(liang)比鋁芯電纜小得多，使得運行更安全。

9.能耗(hao)低(di)(di)：由于銅的電(dian)阻率低(di)(di)，相比鋁(lv)電(dian)纜而言，銅電(dian)纜的電(dian)能損耗(hao)低(di)(di)，這是(shi)顯而易見的。這有利于提高發電(dian)利用率和(he)保護環境(jing)。

10.抗氧化，耐(nai)腐(fu)蝕：銅(tong)(tong)芯電纜的連接頭性能穩定(ding)，不會由于氧化而發生事(shi)故(gu)。鋁芯電纜的接頭不穩定(ding)時(shi)常會由于氧化使接觸電阻增(zeng)大(da)，發熱而發生事(shi)故(gu)。因此，事(shi)故(gu)率(lv)比銅(tong)(tong)芯電纜大(da)得多。

11.施工(gong)方(fang)便(bian)：銅(tong)(tong)芯(xin)(xin)柔性好(hao)，允許的(de)彎(wan)度半徑(jing)小(xiao)，所以拐彎(wan)方(fang)便(bian)，穿管容(rong)易；銅(tong)(tong)芯(xin)(xin)抗疲(pi)勞、反復折彎(wan)不易斷裂，所以接線方(fang)便(bian)；于(yu)銅(tong)(tong)芯(xin)(xin)的(de)機(ji)械強度高，能(neng)承受較大的(de)機(ji)械拉力，給施工(gong)敷設(she)帶來很大便(bian)利，也(ye)為機(ji)械化(hua)施工(gong)創造了條(tiao)件。