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聚氯乙烯電纜

聚氯乙烯(xi)絕(jue)緣電(dian)(dian)(dian)纜電(dian)(dian)(dian)線產品(pin)分(fen)為固(gu)定布(bu)線用無保護套(tao)電(dian)(dian)(dian)纜、固(gu)定布(bu)線用護套(tao)電(dian)(dian)(dian)纜、輕型無護套(tao)軟(ruan)電(dian)(dian)(dian)纜、一般用途(tu)護套(tao)軟(ruan)電(dian)(dian)(dian)纜、安裝用電(dian)(dian)(dian)纜和(he)屏蔽電(dian)(dian)(dian)線、特(te)殊用途(tu)保護套(tao)軟(ruan)電(dian)(dian)(dian)纜、聚氯乙烯(xi)絕(jue)緣阻燃耐火(huo)電(dian)(dian)(dian)纜等產品(pin)

歷史

電(dian)(dian)線(xian)(xian)電(dian)(dian)纜(lan)行業(ye)是(shi)我國(guo)經濟(ji)建設的(de)重(zhong)要配(pei)套(tao)產(chan)業(ye)，廣泛應用(yong)于(yu)國(guo)民經濟(ji)各(ge)個領域，占(zhan)據(ju)著中(zhong)國(guo)電(dian)(dian)工行業(ye)1/4的(de)行業(ye)，是(shi)機械(xie)工業(ye)中(zhong)僅(jin)次于(yu)汽車行業(ye)的(de)第(di)二大產(chan)業(ye)。其中(zhong)，室內裝(zhuang)修使用(yong)的(de)電(dian)(dian)線(xian)(xian)主要是(shi)額定電(dian)(dian)壓450/750v及以下(xia)聚氯乙(yi)烯絕緣電(dian)(dian)纜(lan)，又(you)稱電(dian)(dian)線(xian)(xian)。

電(dian)線(xian)質量的考核(he)主要(yao)由專(zhuan)業檢驗機構進行檢驗，報告中(zhong)主要(yao)的技術指標有以下：

1、導(dao)體(ti)直流電(dian)阻。直接反映電(dian)線的(de)載流能(neng)力，也(ye)就是通(tong)常所說能(neng)帶多大的(de)負載。該指標與導(dao)體(ti)材質、導(dao)體(ti)截面(mian)積（電(dian)線規格(ge)）也(ye)就是線徑有(you)關

2、成品耐壓(ya)試驗。主要考(kao)核電線(xian)的絕(jue)緣是否有(you)(you)漏電。該指標(biao)與絕(jue)緣的材料(liao)和制造工藝有(you)(you)關

3、絕緣（護套）厚度及機械性能等項(xiang)目(mu)。主要(yao)考核電(dian)線使(shi)(shi)用(yong)(yong)(yong)壽命(ming)及使(shi)(shi)用(yong)(yong)(yong)環境(jing)。絕緣厚度過薄(bo)或(huo)扁芯，容易在安裝或(huo)使(shi)(shi)用(yong)(yong)(yong)中(zhong)在薄(bo)的(de)位置發生(sheng)破損，形成漏電(dian)。使(shi)(shi)用(yong)(yong)(yong)劣質絕緣材料的(de)電(dian)線使(shi)(shi)用(yong)(yong)(yong)壽命(ming)短(duan)。

選購

1、首選(xuan)正規廠家(jia)、商家(jia)產品。成盤包裝的電(dian)線(xian)(xian)應有合(he)格證，電(dian)線(xian)(xian)本體應印有廠名或(huo)商標(biao)、電(dian)壓、3C標(biao)志等(deng)(deng)。廠家(jia)假(jia)冒偽(wei)劣電(dian)線(xian)(xian)往往是“三無”產品，但上面卻(que)也(ye)有模棱兩可的產地等(deng)(deng)標(biao)識，如中(zhong)國制造、中(zhong)國某省(sheng)或(huo)某市制造等(deng)(deng)，這(zhe)實際等(deng)(deng)于(yu)未標(biao)產地。

2、布電(dian)線(xian)(xian)目(mu)前使(shi)用(yong)(yong)的(de)導體(ti)材料主(zhu)要有(you)銅(tong)(tong)(tong)和鋁。在選購時首先(xian)應(ying)根(gen)據(ju)使(shi)用(yong)(yong)的(de)負載選擇相應(ying)的(de)規格，如(ru)照(zhao)明(ming)線(xian)(xian)路(lu)使(shi)用(yong)(yong)1.5平(ping)方毫(hao)(hao)米(mi)的(de)鋁線(xian)(xian)或2.5平(ping)方毫(hao)(hao)米(mi)的(de)鋁線(xian)(xian)，如(ru)空(kong)調、微波爐(lu)、烤箱等使(shi)用(yong)(yong)2.5平(ping)方毫(hao)(hao)米(mi)的(de)銅(tong)(tong)(tong)線(xian)(xian)或4平(ping)方毫(hao)(hao)米(mi)的(de)鋁線(xian)(xian)，選擇合(he)適規格的(de)電(dian)線(xian)(xian)可避(bi)免由(you)于小(xiao)規格電(dian)線(xian)(xian)載流量不夠(gou)引起短路(lu)發生(sheng)火災；其次選購時應(ying)注意導體(ti)的(de)質量，合(he)格的(de)銅(tong)(tong)(tong)芯電(dian)線(xian)(xian)應(ying)使(shi)用(yong)(yong)紫紅色、有(you)光澤、手感軟的(de)銅(tong)(tong)(tong)線(xian)(xian)，而偽劣的(de)銅(tong)(tong)(tong)芯線(xian)(xian)銅(tong)(tong)(tong)芯為紫黑色、偏黃或偏白，雜志(zhi)多(duo)，機械強度差，韌勁不佳，稍(shao)用(yong)(yong)力(li)即會(hui)折斷，而且如(ru)果(guo)多(duo)股(gu)銅(tong)(tong)(tong)絲常有(you)斷線(xian)(xian)現象，使(shi)用(yong)(yong)壽命(ming)短。

3、布電(dian)線使用的外(wai)皮(pi)為聚(ju)氯乙烯絕(jue)緣材料。合格(ge)的電(dian)線絕(jue)緣應(ying)該外(wai)觀光滑、表面印字清晰。從電(dian)線頭(tou)觀察，絕(jue)緣應(ying)均勻，不偏芯。有些(xie)偽劣斷線絕(jue)緣層(ceng)看上去似乎很厚實，實際上大多是用再生塑料制(zhi)成的，時間一長，絕(jue)緣層(ceng)會老化漏電(dian)。

4、質量好的(de)電線，一般都在規定的(de)重量范圍內。價格上，由于假(jia)冒(mao)偽劣(lie)的(de)制(zhi)作成(cheng)本低，因此，商販在銷售時(shi)，常以物(wu)美價廉為幌(huang)子低價銷售，讓人上當。

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