選用銅芯線(xian)(xian)首先要看(kan)的是外觀(guan)，一般(ban)色澤均勻、光潔圓潤，絕緣皮和銅芯不易剝脫(tuo)即合格。在(zai)此要提(ti)醒大家：有些劣質電(dian)線(xian)(xian)膠皮看(kan)起來很厚(hou)，但用力擠時，會出現白色。這種銅芯線(xian)(xian)比較容易老化漏電(dian)。

除(chu)以(yi)上所(suo)述檢膠層外，亨(heng)(heng)通(tong)電纜型號，還應注意產品是否有“CCC”認證標(biao)志(zhi)，亨(heng)(heng)通(tong)電纜價格，如商標(biao)、型號規格、額定電壓、長度、廠(chang)名稱、廠(chang)址、電話等標(biao)識，這(zhe)些才是正規廠(chang)家的產品。

第(di)二，要(yao)看(kan)銅芯線(xian)的側(ce)面(mian)，簡單(dan)地說就是(shi)(shi)能夠看(kan)到線(xian)材內部材料的一面(mian)。看(kan)電線(xian)外面(mian)膠皮的厚度是(shi)(shi)否(fou)一致(術語叫(jiao)：偏心(xin))，銅芯是(shi)(shi)否(fou)在(zai)導線(xian)正中，如有(you)偏差即為不合格產品。

此處(chu)提(ti)到銅(tong)(tong)芯(xin)(xin)在這里(li)(li)多加一句：一般銅(tong)(tong)芯(xin)(xin)的(de)質量較差，外(wai)絕緣皮也較厚，而(er)銅(tong)(tong)芯(xin)(xin)本身就會偏(pian)黃(huang)或偏(pian)白(bai)，里(li)(li)面摻(chan)雜雜質，那銅(tong)(tong)芯(xin)(xin)內(nei)是否(fou)有(you)雜質？做法(fa)很簡單，將(jiang)銅(tong)(tong)芯(xin)(xin)放在白(bai)紙上(shang)揉一揉，若白(bai)紙上(shang)留有(you)黑(hei)點(dian)的(de)物質就是雜質含量多。

那怎(zen)樣(yang)檢查膠皮(pi)的質(zhi)量呢，很容易，用打(da)火機燒掉膠皮(pi)，當打(da)火機離開(kai)銅芯(xin)電線(xian)時，電線(xian)上的火苗仍在蔓(man)延(yan)，并(bing)且釋放了大量的白煙，說明膠皮(pi)質(zhi)量不(bu)好，反(fan)之就好。

電(dian)(dian)線電(dian)(dian)纜(lan)(lan)的(de)(de)(de)(de)組成結構(gou)(gou)：絕緣(yuan)層(ceng)是(shi)包(bao)覆在(zai)導線外圍四周，起著電(dian)(dian)氣絕緣(yuan)作用的(de)(de)(de)(de)構(gou)(gou)件(jian)，即能確保傳輸(shu)的(de)(de)(de)(de)電(dian)(dian)流或電(dian)(dian)磁波(bo)、光(guang)波(bo)只沿(yan)著導線行進而(er)不(bu)(bu)流向外面，導體上具(ju)有(you)(you)(you)的(de)(de)(de)(de)電(dian)(dian)位能被隔(ge)絕，既要保證導線的(de)(de)(de)(de)正常傳輸(shu)功(gong)能，又要確保外界(jie)物體和人身的(de)(de)(de)(de)安(an)全。然后(hou)是(shi)填充(chong)結構(gou)(gou)，很多電(dian)(dian)線電(dian)(dian)纜(lan)(lan)產品是(shi)多芯(xin)的(de)(de)(de)(de)，將(jiang)這些絕緣(yuan)線芯(xin)或線對(dui)成纜(lan)(lan)后(hou)，一是(shi)外形不(bu)(bu)圓整，亨通電(dian)(dian)纜(lan)(lan)，二是(shi)絕緣(yuan)線芯(xin)間留(liu)有(you)(you)(you)很大空(kong)隙，因此必須(xu)在(zai)成纜(lan)(lan)時(shi)(shi)加入(ru)填充(chong)結構(gou)(gou)。屏(ping)蔽(bi)是(shi)一種將(jiang)電(dian)(dian)纜(lan)(lan)產品中(zhong)的(de)(de)(de)(de)電(dian)(dian)磁場(chang)與外界(jie)的(de)(de)(de)(de)電(dian)(dian)磁場(chang)進行隔(ge)離的(de)(de)(de)(de)構(gou)(gou)件(jian)；而(er)護(hu)層(ceng)是(shi)當(dang)電(dian)(dian)線電(dian)(dian)纜(lan)(lan)產品安(an)裝運行在(zai)各種不(bu)(bu)同的(de)(de)(de)(de)環境中(zhong)時(shi)(shi)，必須(xu)具(ju)有(you)(you)(you)對(dui)產品整體，特別是(shi)對(dui)絕緣(yuan)層(ceng)起保護(hu)作用的(de)(de)(de)(de)構(gou)(gou)件(jian)。還有(you)(you)(you)抗拉元(yuan)件(jian)，典型的(de)(de)(de)(de)結構(gou)(gou)是(shi)鋼芯(xin)鋁絞(jiao)線、光(guang)纖光(guang)纜(lan)(lan)電(dian)(dian)纜(lan)(lan)等。

電線(xian)一般用于承載電流(liu)的導電金屬(shu)線(xian)材，有(you)實(shi)心(xin)的、絞合的或箔(bo)片編(bian)織的等各種形式。按絕緣(yuan)狀況分為裸電線(xian)和絕緣(yuan)電線(xian)兩大類。

電(dian)(dian)(dian)(dian)纜是由一根(gen)或(huo)多(duo)根(gen)相互絕(jue)緣的導電(dian)(dian)(dian)(dian)線(xian)(xian)心置(zhi)于(yu)密封護套中構成的絕(jue)緣導線(xian)(xian)。其外可加保護覆蓋(gai)層，亨通(tong)電(dian)(dian)(dian)(dian)纜現貨供應(ying)，用于(yu)傳輸、分配電(dian)(dian)(dian)(dian)能或(huo)傳送電(dian)(dian)(dian)(dian)信號。它(ta)與普通(tong)電(dian)(dian)(dian)(dian)線(xian)(xian)的差(cha)別主要是電(dian)(dian)(dian)(dian)纜尺寸較(jiao)大，結構較(jiao)復(fu)雜。

武漢(han)富強興電(dian)線(xian)電(dian)纜有限(xian)公司位于武漢(han)市漢(han)口北(bei)合德昌水(shui)暖(nuan)管材城，現貨銷售電(dian)線(xian)電(dian)纜，大量庫存，歡迎來電(dian)咨詢！！！