銅線和鋁線一般不允許直(zhi)接(jie)(jie)(jie)(jie)連(lian)接(jie)(jie)(jie)(jie)。為(wei)(wei)什么呢？因為(wei)(wei)銅和鋁的(de)電化性質不相同。將它們直(zhi)接(jie)(jie)(jie)(jie)連(lian)接(jie)(jie)(jie)(jie)時，一旦遇到空氣潮濕(shi)產(chan)生(sheng)(sheng)水分形成電解液時，就將產(chan)生(sheng)(sheng)電池效(xiao)應。鋁易于(yu)失去電子成為(wei)(wei)正極，銅難于(yu)失去電子而成為(wei)(wei)負極，于(yu)是在正負極間(jian)就產(chan)生(sheng)(sheng)一個小(xiao)的(de)電動(dong)勢(shi)，產(chan)生(sheng)(sheng)電動(dong)勢(shi)就會產(chan)生(sheng)(sheng)很小(xiao)的(de)電流，腐蝕(shi)鋁線，引起接(jie)(jie)(jie)(jie)觸不良，接(jie)(jie)(jie)(jie)觸電阻就會增大(da)。

電纜中電流通過銅(tong)線(xian)(xian)和鋁(lv)線(xian)(xian)連接部位(wei)時，就會溫度升高(gao)，高(gao)溫又會加速鋁(lv)線(xian)(xian)的腐(fu)蝕。這樣就形(xing)成了惡性循環，越來越嚴重(zhong)，導致將導線(xian)(xian)燒毀。

那銅(tong)(tong)(tong)線(xian)和鋁(lv)(lv)線(xian)該怎么(me)連(lian)接(jie)呢？銅(tong)(tong)(tong)線(xian)和鋁(lv)(lv)線(xian)必須采取(qu)過(guo)渡連(lian)接(jie)，就是我們平時用到的銅(tong)(tong)(tong)鋁(lv)(lv)過(guo)渡的連(lian)接(jie)管、銅(tong)(tong)(tong)鋁(lv)(lv)過(guo)渡線(xian)夾和銅(tong)(tong)(tong)鋁(lv)(lv)過(guo)渡線(xian)鼻子連(lian)接(jie)。如果小截面(mian)銅(tong)(tong)(tong)線(xian)和鋁(lv)(lv)線(xian)連(lian)接(jie)時，應將銅(tong)(tong)(tong)線(xian)搪錫后再與鋁(lv)(lv)線(xian)連(lian)接(jie)。

通(tong)過以上介(jie)紹，您(nin)(nin)是否對如何選擇電(dian)(dian)線(xian)電(dian)(dian)纜，有了更深的了解呢？如果(guo)您(nin)(nin)對我們的電(dian)(dian)線(xian)電(dian)(dian)纜感興趣，可以咨詢金(jin)福友電(dian)(dian)纜在線(xian)客服。