銅包鋁(lv)和純(chun)銅進行以下四方(fang)面的比(bi)較：

機械特性：

純(chun)(chun)銅(tong)(tong)(tong)(tong)導(dao)(dao)體強度、伸長率比(bi)銅(tong)(tong)(tong)(tong)包鋁(lv)導(dao)(dao)體大，也(ye)就是(shi)說(shuo)純(chun)(chun)銅(tong)(tong)(tong)(tong)在機(ji)械性能方(fang)面(mian)比(bi)銅(tong)(tong)(tong)(tong)包鋁(lv)好(hao)(hao)。從電(dian)纜(lan)(lan)(lan)設(she)計的角度來看，純(chun)(chun)銅(tong)(tong)(tong)(tong)導(dao)(dao)體比(bi)銅(tong)(tong)(tong)(tong)包鋁(lv)導(dao)(dao)體機(ji)械強度好(hao)(hao)的優點(dian)，在實際應用(yong)過程(cheng)中不一(yi)(yi)定需(xu)要。銅(tong)(tong)(tong)(tong)包鋁(lv)導(dao)(dao)體比(bi)純(chun)(chun)銅(tong)(tong)(tong)(tong)輕很多，因此銅(tong)(tong)(tong)(tong)包鋁(lv)的電(dian)纜(lan)(lan)(lan)在整體重量上比(bi)純(chun)(chun)銅(tong)(tong)(tong)(tong)導(dao)(dao)體電(dian)纜(lan)(lan)(lan)要輕，這樣會給電(dian)纜(lan)(lan)(lan)的運輸(shu)和電(dian)纜(lan)(lan)(lan)的架設(she)施工帶來方(fang)便(bian)。另外銅(tong)(tong)(tong)(tong)包鋁(lv)比(bi)純(chun)(chun)銅(tong)(tong)(tong)(tong)軟一(yi)(yi)點(dian)，用(yong)銅(tong)(tong)(tong)(tong)包鋁(lv)導(dao)(dao)體生產(chan)的電(dian)纜(lan)(lan)(lan)在柔軟性方(fang)面(mian)比(bi)純(chun)(chun)銅(tong)(tong)(tong)(tong)的電(dian)纜(lan)(lan)(lan)好(hao)(hao)一(yi)(yi)點(dian)。

電氣性能：

因(yin)為鋁的導電(dian)性(xing)比銅差，使得銅包鋁導體的直流電(dian)阻(zu)比純(chun)銅導體大，這點有無影響主要 2014年中考沖刺綜合復習指(zhi)導北京地區試提(ti) 廣東地區試提(ti)

江蘇地區試提

看電(dian)(dian)(dian)纜是否會被用供電(dian)(dian)(dian)，如給(gei)放大器提供電(dian)(dian)(dian)源，如果被用來供電(dian)(dian)(dian)的(de)(de)(de)話，銅(tong)(tong)包(bao)鋁導(dao)(dao)體(ti)將會導(dao)(dao)致額外的(de)(de)(de)電(dian)(dian)(dian)力消(xiao)耗，電(dian)(dian)(dian)壓降低較多。當頻率超過5MHz時，此時的(de)(de)(de)交流(liu)電(dian)(dian)(dian)阻衰減在(zai)這(zhe)兩種不同(tong)的(de)(de)(de)導(dao)(dao)體(ti)下沒有明(ming)顯的(de)(de)(de)區別。當然，這(zhe)主要是因(yin)(yin)為高(gao)頻電(dian)(dian)(dian)流(liu)的(de)(de)(de)集膚效應，頻率越高(gao)，電(dian)(dian)(dian)流(liu)的(de)(de)(de)流(liu)動(dong)(dong)就越接近導(dao)(dao)體(ti)表(biao)面(mian)，在(zai)銅(tong)(tong)包(bao)鋁導(dao)(dao)體(ti)的(de)(de)(de)表(biao)面(mian)實際(ji)上(shang)(shang)純(chun)銅(tong)(tong)材料，當頻率高(gao)到(dao)一(yi)定時候，整個電(dian)(dian)(dian)流(liu)鍍(du)在(zai)銅(tong)(tong)材質里面(mian)流(liu)動(dong)(dong)了。在(zai)5MHz情(qing)況下，神州銅(tong)(tong)包(bao)鋁，電(dian)(dian)(dian)流(liu)在(zai)近表(biao)面(mian)的(de)(de)(de)約0.025毫(hao)米(mi)厚度(du)中流(liu)動(dong)(dong)，而銅(tong)(tong)包(bao)鋁導(dao)(dao)體(ti)的(de)(de)(de)銅(tong)(tong)層厚度(du)比此厚度(du)多約一(yi)倍。對于(yu)同(tong)軸電(dian)(dian)(dian)纜，因(yin)(yin)為傳輸(shu)(shu)的(de)(de)(de)信號是在(zai)5MHz以(yi)上(shang)(shang)，因(yin)(yin)此銅(tong)(tong)包(bao)鋁導(dao)(dao)體(ti)和純(chun)銅(tong)(tong)導(dao)(dao)體(ti)傳輸(shu)(shu)效果是相同(tong)的(de)(de)(de)。在(zai)實際(ji)測試電(dian)(dian)(dian)纜的(de)(de)(de)衰減可以(yi)證明(ming)這(zhe)一(yi)點(dian)。

銅包鋁電力電纜

成本(ben)(ben)低(di)重(zhong)量輕(qing)。與相同技術(shu)指標的銅芯電纜相比(bi)，銅包鋁導(dao)體電纜可(ke)(ke)節約成本(ben)(ben)40%以上(shang)，銅包鋁/銅復合導(dao)體電纜可(ke)(ke)節約成本(ben)(ben)20%以上(shang)。銅包鋁線(xian)的比(bi)重(zhong)僅為純銅線(xian)的37%-40%。在線(xian)徑、重(zhong)量相等的情況下，其長度(du)是純銅線(xian)的2.5倍(bei)。

良好的(de)焊(han)接性。銅(tong)包(bao)(bao)(bao)(bao)鋁(lv)線(xian)(xian)由(you)于其(qi)表(biao)面同心(xin)包(bao)(bao)(bao)(bao)覆了(le)一層純(chun)銅(tong)，因此具(ju)有(you)(you)跟(gen)純(chun)銅(tong)線(xian)(xian)一樣的(de)可(ke)焊(han)性，方(fang)便生(sheng)(sheng)產。雖然銅(tong)包(bao)(bao)(bao)(bao)鋁(lv)電(dian)纜(lan)已經誕(dan)生(sheng)(sheng)，并正(zheng)逐(zhu)步得到應用(yong)，但尚有(you)(you)不(bu)小阻力(li)，銅(tong)包(bao)(bao)(bao)(bao)鋁(lv)電(dian)線(xian)(xian)，主要表(biao)現(xian)為銅(tong)包(bao)(bao)(bao)(bao)鋁(lv)電(dian)纜(lan)尚比(bi)較難(nan)找到國(guo)家、行業的(de)應用(yong)依(yi)據，難(nan)以(yi)得到設計單位的(de)認可(ke)。銅(tong)包(bao)(bao)(bao)(bao)鋁(lv)電(dian)纜(lan)尚有(you)(you)相當多的(de)產品(pin)還(huan)沒有(you)(you)3C認證，行業尚停留在產品(pin)鑒(jian)定，制(zhi)定企(qi)業標(biao)準的(de)階(jie)段，不(bu)同品(pin)牌之間的(de)產品(pin)規格、特性、使用(yong)標(biao)準差異較大，工程(cheng)設計者應用(yong)時難(nan)以(yi)把握，投(tou)資(zi)方(fang)暫時也不(bu)樂意接受。但是，隨著國(guo)家的(de)標(biao)準和(he)法規的(de)逐(zhu)步完善和(he)認可(ke)，銅(tong)包(bao)(bao)(bao)(bao)鋁(lv)電(dian)纜(lan)必將走向(xiang)規范化，無疑將成為了(le)未來幾年(nian)電(dian)線(xian)(xian)電(dian)纜(lan)的(de)亮點，帶動整個行業的(de)發展。

銅(tong)包鋁(lv)線是(shi)(shi)一種新型的(de)(de)(de)(de)(de)導(dao)線材(cai)料，它的(de)(de)(de)(de)(de)表(biao)(biao)面有(you)一層薄薄的(de)(de)(de)(de)(de)純金屬銅(tong)。相(xiang)比于(yu)(yu)其他(ta)類型的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)線電(dian)(dian)(dian)(dian)(dian)纜產(chan)(chan)品而言(yan)，宿遷銅(tong)包鋁(lv)，它具有(you)較好的(de)(de)(de)(de)(de)導(dao)電(dian)(dian)(dian)(dian)(dian)性(xing)能、較長的(de)(de)(de)(de)(de)使用(yong)(yong)壽命以及較低的(de)(de)(de)(de)(de)經(jing)濟(ji)成(cheng)本等(deng)特(te)點；在工業(ye)與民用(yong)(yong)建(jian)筑中大(da)量(liang)使用(yong)(yong)的(de)(de)(de)(de)(de)配電(dian)(dian)(dian)(dian)(dian)系統中也扮演著重要(yao)的(de)(de)(de)(de)(de)角色(se)。使用(yong)(yong)方法是(shi)(shi)先(xian)將線路布設(she)好再接通(tong)電(dian)(dian)(dian)(dian)(dian)源進行供(gong)電(dian)(dian)(dian)(dian)(dian)，且要(yao)注意先(xian)關掉(diao)總開(kai)關或(huo)卸下電(dian)(dian)(dian)(dian)(dian)池(chi)才能更換燈(deng)泡等(deng)電(dian)(dian)(dian)(dian)(dian)器設(she)備(bei)，避免觸電(dian)(dian)(dian)(dian)(dian)事故(gu)發生(sheng)該產(chan)(chan)品的(de)(de)(de)(de)(de)缺點是(shi)(shi)承載(zai)電(dian)(dian)(dian)(dian)(dian)流容量(liang)小，易(yi)(yi)受潮(chao)濕空氣影響(xiang)或(huo)者化學腐(fu)蝕(shi)而產(chan)(chan)生(sheng)不可逆損傷和斷路.同(tong)時質地軟(ruan)，易(yi)(yi)于(yu)(yu)互(hu)相(xiang)摩(mo)擦(ca)損耗并且不具備(bei)金銀等(deng)貴重元(yuan)素的(de)(de)(de)(de)(de)延展性(xing)故(gu)而不利于(yu)(yu)遠距(ju)離傳輸和使用(yong)(yong);優點在于(yu)(yu)電(dian)(dian)(dian)(dian)(dian)阻(zu)率低經(jing)濟(ji)實用(yong)(yong)抗拉性(xing)強(qiang)不易(yi)(yi)過(guo)載(zai)短路而且外表(biao)(biao)光(guang)滑耐氧化不生(sheng)銹高強(qiang)度輕質量(liang)便于(yu)(yu)施工組合方便等(deng)等(deng)。