今(jin)天帶(dai)你們扒(ba)一扒(ba)為(wei)什么慶豐電纜(lan)(lan)只出產無(wu)氧化銅芯電纜(lan)(lan)而沒有鋁芯電纜(lan)(lan)，重點是銅芯電纜(lan)(lan)比(bi)鋁芯電纜(lan)(lan)有著更多的優勢:
1.電阻率低:鋁芯(xin)電纜的電阻率比銅芯(xin)電纜約高1.68倍。
2.延展(zhan)(zhan)性好：銅合金(jin)的(de)延展(zhan)(zhan)率為20~40%,電工用銅的(de)延展(zhan)(zhan)率在30%以上，而鋁合金(jin)僅為18%。
3.強度高(gao)：常溫下的(de)容許應力(li)，銅比鋁分別高(gao)出7~28%。特(te)別是(shi)高(gao)溫下的(de)應力(li)，兩者相(xiang)差(cha)更(geng)是(shi)甚(shen)遠。
4.抗(kang)疲(pi)勞：鋁(lv)材重復折彎(wan)易開裂，銅(tong)(tong)則不易。彈性方針方面(mian)，銅(tong)(tong)也比鋁(lv)高(gao)約1.7~1.8倍。
5.安穩性好：耐腐(fu)蝕：銅(tong)芯抗氧(yang)化，耐腐(fu)蝕，而(er)鋁芯簡略受氧(yang)化和腐(fu)蝕。
6.載流(liu)量大:因電(dian)(dian)阻率低，同截面的銅芯電(dian)(dian)纜(lan)要比鋁芯電(dian)(dian)纜(lan)容許的載流(liu)量(能夠通過(guo)的最大電(dian)(dian)流(liu))高30%左右。
7.電(dian)(dian)(dian)壓丟掉低:由(you)于銅芯電(dian)(dian)(dian)纜的電(dian)(dian)(dian)阻率低，在同(tong)截面流過相同(tong)電(dian)(dian)(dian)流的情況下。銅芯電(dian)(dian)(dian)纜的電(dian)(dian)(dian)壓降(jiang)小。因此(ci)，相同(tong)的輸電(dian)(dian)(dian)距離(li)，能保證(zheng)較(jiao)高的電(dian)(dian)(dian)壓質量(liang)；或者說，在容許的電(dian)(dian)(dian)壓降(jiang)條(tiao)件(jian)下，銅芯電(dian)(dian)(dian)纜輸電(dian)(dian)(dian)能抵達較(jiao)遠的距離(li)，即供電(dian)(dian)(dian)覆(fu)蓋面積大(da)，有利于網絡的規劃，減少供電(dian)(dian)(dian)點的設置(zhi)數量(liang)。
8.發熱溫度(du)低(di):在相(xiang)同的電(dian)流下(xia)，同截面的銅芯電(dian)纜(lan)的發熱量比(bi)鋁芯電(dian)纜(lan)小得(de)多(duo)，使(shi)得(de)工作更安(an)全。
9.能耗低:由于(yu)銅(tong)的電(dian)阻(zu)率低，比較(jiao)鋁電(dian)纜(lan)而言，銅(tong)電(dian)纜(lan)的電(dian)能損耗低，這(zhe)是清楚(chu)明(ming)晰的。這(zhe)有利于(yu)前進發電(dian)利用(yong)率和維護自然(ran)環境。
10.抗氧(yang)(yang)化(hua):耐腐蝕：銅(tong)(tong)芯電(dian)纜(lan)的銜(xian)接(jie)頭功用安(an)穩，不會(hui)由(you)(you)于氧(yang)(yang)化(hua)而發生事(shi)端(duan)。鋁芯電(dian)纜(lan)的接(jie)頭不安(an)穩時常會(hui)由(you)(you)于氧(yang)(yang)化(hua)使接(jie)觸電(dian)阻(zu)增大(da)，發熱(re)而發生事(shi)端(duan)。因此，事(shi)端(duan)率比銅(tong)(tong)芯電(dian)纜(lan)大(da)得多。
11.施工便利(li)：①銅芯柔(rou)性好，容許的(de)彎(wan)度(du)半徑小，所以(yi)拐(guai)彎(wan)便利(li)，穿(chuan)管簡略(lve)；②銅芯抗疲(pi)勞、重(zhong)復折彎(wan)不易開裂(lie)，所以(yi)接線便利(li)；③于銅芯的(de)機(ji)械(xie)(xie)強度(du)高，能承受較大的(de)機(ji)械(xie)(xie)拉(la)力，給施工敷設帶來很(hen)大便利(li)，也為機(ji)械(xie)(xie)化施工發(fa)明晰條件。
盡管鋁(lv)芯電(dian)(dian)纜(lan)(lan)更(geng)廉價，但是(shi)銅(tong)電(dian)(dian)纜(lan)(lan)在電(dian)(dian)纜(lan)(lan)供電(dian)(dian)中，特別是(shi)地(di)下(xia)電(dian)(dian)纜(lan)(lan)供電(dian)(dian)領域，具(ju)有出色的(de)(de)優勢。地(di)下(xia)運(yun)用銅(tong)芯電(dian)(dian)纜(lan)(lan)供電(dian)(dian)具(ju)有事端率低(di)、耐腐蝕、可靠性高、施(shi)工維護便利等特征(zheng)。這(zhe)也(ye)是(shi)國內現在在地(di)下(xia)電(dian)(dian)纜(lan)(lan)供電(dian)(dian)中首(shou)要選(xuan)用銅(tong)電(dian)(dian)纜(lan)(lan)的(de)(de)原因地(di)址。 | 
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