銅包(bao)鋁電線(xian)電纜的缺點(dian)與優點(dian)

目前市(shi)場(chang)上存(cun)在許多(duo)的(de)(de)銅(tong)(tong)包鋁技(ji)術，銅(tong)(tong)包鋼技(ji)術，當前有色金屬價格暴漲，銅(tong)(tong)導體成本占電纜原材料總(zong)成本的(de)(de)90%以上.在此(ci)種(zhong)市(shi)場(chang)下(xia)，總(zong)是存(cun)在許多(duo)的(de)(de)商家上的(de)(de)弄虛作假以銅(tong)(tong)包鋁冒充純銅(tong)(tong)，下(xia)面小編就(jiu)淺(qian)談一(yi)下(xia)銅(tong)(tong)包鋁的(de)(de)優點(dian)與(yu)缺點(dian)。

以銅(tong)包鋁為例，在(zai)市場上有(you)許(xu)多的(de)商家以壞充好，大(da)(da)家都知道，電(dian)(dian)阻大(da)(da)的(de)電(dian)(dian)線，對于電(dian)(dian)線在(zai)輸(shu)(shu)送過(guo)程中(zhong)的(de)消耗就越(yue)(yue)大(da)(da)，電(dian)(dian)阻率越(yue)(yue)來越(yue)(yue)大(da)(da)，銅(tong)電(dian)(dian)纜電(dian)(dian)阻率越(yue)(yue)小，輸(shu)(shu)送的(de)電(dian)(dian)能損(sun)耗更(geng)小。因(yin)此在(zai)家用(yong)過(guo)程中(zhong)的(de)還是用(yong)純銅(tong)線比(bi)較好

優點：1.銅包鋁技(ji)術因(yin)其材料上不(bu)是用(yong)的(de)純銅，因(yin)此在(zai)價格(ge)上比較(jiao)低，在(zai)重量上因(yin)為電(dian)線常常需要的(de)計量單位是米而不(bu)是重量，因(yin)此比較(jiao)節省運輸(shu)成本，

2.由于高頻信號具有(you)“趨膚效應”的(de)特點，因此(ci)銅(tong)包鋁線(xian)(xian)和銅(tong)包鋼線(xian)(xian)在傳輸高頻信號（大于5MHz）時，具有(you)與純銅(tong)線(xian)(xian)相同的(de)導電性能(neng)。

缺(que)點：1.在電(dian)(dian)氣性能方面，因為鋁的(de)導(dao)電(dian)(dian)性比(bi)銅(tong)差，使得銅(tong)包鋁導(dao)體(ti)的(de)直流電(dian)(dian)阻比(bi)純銅(tong)導(dao)體(ti)大，這(zhe)點有無影響主要看電(dian)(dian)纜是(shi)否會被用供(gong)電(dian)(dian)，如(ru)給放大器(qi)提供(gong)電(dian)(dian)源，如(ru)果(guo)被用來供(gong)電(dian)(dian)的(de)話，銅(tong)包鋁導(dao)體(ti)將(jiang)會導(dao)致額外的(de)電(dian)(dian)力消耗，電(dian)(dian)壓降(jiang)低較多。

2.因為鋁(lv)(lv)(lv)(lv)容易氧化，因此(ci)在(zai)(zai)電線(xian)(xian)容易發熱的(de)場(chang)(chang)所(suo)中不建議(yi)用(yong)銅(tong)包(bao)(bao)鋁(lv)(lv)(lv)(lv)線(xian)(xian)，民用(yong)建筑(zhu)設計(ji)規范要求(qiu)的(de)，有(you)耐高溫及嚴格要求(qiu)場(chang)(chang)所(suo)必(bi)須(xu)采用(yong)銅(tong)芯電纜。因此(ci)在(zai)(zai)商場(chang)(chang)上常用(yong)銅(tong)包(bao)(bao)鋁(lv)(lv)(lv)(lv)代替(ti)(ti)鋁(lv)(lv)(lv)(lv)線(xian)(xian)，很(hen)少(shao)用(yong)銅(tong)包(bao)(bao)鋁(lv)(lv)(lv)(lv)代替(ti)(ti)銅(tong)線(xian)(xian).