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聚氯乙烯電纜

聚氯乙烯絕(jue)緣(yuan)電(dian)(dian)(dian)纜(lan)(lan)電(dian)(dian)(dian)線產品(pin)分為固定(ding)(ding)布線用無保(bao)護套電(dian)(dian)(dian)纜(lan)(lan)、固定(ding)(ding)布線用護套電(dian)(dian)(dian)纜(lan)(lan)、輕型無護套軟(ruan)電(dian)(dian)(dian)纜(lan)(lan)、一般用途(tu)護套軟(ruan)電(dian)(dian)(dian)纜(lan)(lan)、安裝用電(dian)(dian)(dian)纜(lan)(lan)和屏蔽電(dian)(dian)(dian)線、特殊用途(tu)保(bao)護套軟(ruan)電(dian)(dian)(dian)纜(lan)(lan)、聚氯乙烯絕(jue)緣(yuan)阻燃耐火(huo)電(dian)(dian)(dian)纜(lan)(lan)等(deng)產品(pin)

歷史

電(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)纜(lan)(lan)行(xing)(xing)業(ye)(ye)(ye)(ye)是(shi)(shi)我國經濟建設的(de)(de)(de)重要配(pei)套產(chan)業(ye)(ye)(ye)(ye)，廣(guang)泛應(ying)用(yong)于(yu)國民經濟各個領域，占據著中(zhong)國電(dian)(dian)(dian)工(gong)行(xing)(xing)業(ye)(ye)(ye)(ye)1/4的(de)(de)(de)行(xing)(xing)業(ye)(ye)(ye)(ye)，是(shi)(shi)機械工(gong)業(ye)(ye)(ye)(ye)中(zhong)僅次于(yu)汽車行(xing)(xing)業(ye)(ye)(ye)(ye)的(de)(de)(de)第二大產(chan)業(ye)(ye)(ye)(ye)。其(qi)中(zhong)，室內(nei)裝修使用(yong)的(de)(de)(de)電(dian)(dian)(dian)線(xian)主要是(shi)(shi)額定電(dian)(dian)(dian)壓(ya)450/750v及以下聚(ju)氯乙烯(xi)絕緣(yuan)電(dian)(dian)(dian)纜(lan)(lan)，又稱電(dian)(dian)(dian)線(xian)。

電線(xian)質量(liang)的考(kao)核(he)主(zhu)要(yao)由(you)專業(ye)檢驗(yan)機構進(jin)行檢驗(yan)，報告中(zhong)主(zhu)要(yao)的技(ji)術指(zhi)標有以下(xia)：

1、導(dao)體直(zhi)流電阻。直(zhi)接反映電線的載流能(neng)力，也就(jiu)(jiu)是通常所(suo)說(shuo)能(neng)帶多大的負載。該指標(biao)與導(dao)體材(cai)質(zhi)、導(dao)體截面積（電線規格）也就(jiu)(jiu)是線徑有(you)關(guan)

2、成品耐壓(ya)試驗。主要考核(he)電(dian)線的絕緣是(shi)否有(you)漏電(dian)。該指標與絕緣的材料和制(zhi)造工藝(yi)有(you)關

3、絕緣（護套）厚(hou)度及機械性能等項目。主(zhu)要考(kao)核電(dian)線(xian)使(shi)(shi)用壽命及使(shi)(shi)用環境。絕緣厚(hou)度過薄或扁芯，容易在安裝或使(shi)(shi)用中在薄的位置發(fa)生破損，形成漏(lou)電(dian)。使(shi)(shi)用劣質絕緣材料的電(dian)線(xian)使(shi)(shi)用壽命短。

選購

1、首選正規廠(chang)家(jia)、商(shang)家(jia)產品。成(cheng)盤包(bao)裝(zhuang)的(de)電(dian)(dian)線(xian)應有(you)合格證(zheng)，電(dian)(dian)線(xian)本體(ti)應印(yin)有(you)廠(chang)名或商(shang)標(biao)、電(dian)(dian)壓、3C標(biao)志等(deng)。廠(chang)家(jia)假冒偽劣電(dian)(dian)線(xian)往往是“三無(wu)”產品，但上面卻也有(you)模棱兩可的(de)產地(di)等(deng)標(biao)識，如中國制造(zao)、中國某省(sheng)或某市制造(zao)等(deng)，這實(shi)際等(deng)于未標(biao)產地(di)。

2、布電線(xian)(xian)(xian)(xian)目前使(shi)(shi)用(yong)(yong)的(de)(de)導(dao)體材料(liao)主要有(you)銅(tong)(tong)和鋁(lv)。在(zai)選購(gou)時首先(xian)應(ying)(ying)根據(ju)使(shi)(shi)用(yong)(yong)的(de)(de)負載選擇相應(ying)(ying)的(de)(de)規格，如照明線(xian)(xian)(xian)(xian)路使(shi)(shi)用(yong)(yong)1.5平方(fang)毫米(mi)的(de)(de)鋁(lv)線(xian)(xian)(xian)(xian)或(huo)(huo)2.5平方(fang)毫米(mi)的(de)(de)鋁(lv)線(xian)(xian)(xian)(xian)，如空調、微波爐、烤(kao)箱等使(shi)(shi)用(yong)(yong)2.5平方(fang)毫米(mi)的(de)(de)銅(tong)(tong)線(xian)(xian)(xian)(xian)或(huo)(huo)4平方(fang)毫米(mi)的(de)(de)鋁(lv)線(xian)(xian)(xian)(xian)，選擇合適規格的(de)(de)電線(xian)(xian)(xian)(xian)可避免由于小規格電線(xian)(xian)(xian)(xian)載流(liu)量(liang)不夠引起短(duan)(duan)路發生火(huo)災(zai)；其次選購(gou)時應(ying)(ying)注意導(dao)體的(de)(de)質量(liang)，合格的(de)(de)銅(tong)(tong)芯(xin)電線(xian)(xian)(xian)(xian)應(ying)(ying)使(shi)(shi)用(yong)(yong)紫紅色(se)、有(you)光(guang)澤、手感軟的(de)(de)銅(tong)(tong)線(xian)(xian)(xian)(xian)，而偽劣(lie)的(de)(de)銅(tong)(tong)芯(xin)線(xian)(xian)(xian)(xian)銅(tong)(tong)芯(xin)為紫黑色(se)、偏黃或(huo)(huo)偏白，雜志多，機(ji)械強度差，韌(ren)勁不佳，稍用(yong)(yong)力即會折斷(duan)，而且如果多股銅(tong)(tong)絲常有(you)斷(duan)線(xian)(xian)(xian)(xian)現象，使(shi)(shi)用(yong)(yong)壽命短(duan)(duan)。

3、布電(dian)(dian)線使用的(de)外(wai)皮為聚氯乙(yi)烯(xi)絕緣(yuan)(yuan)材料。合格的(de)電(dian)(dian)線絕緣(yuan)(yuan)應該外(wai)觀(guan)光(guang)滑(hua)、表面印字清晰。從(cong)電(dian)(dian)線頭觀(guan)察，絕緣(yuan)(yuan)應均(jun)勻，不偏芯。有些偽(wei)劣(lie)斷(duan)線絕緣(yuan)(yuan)層看上去(qu)似乎(hu)很厚實，實際(ji)上大多是用再生塑料制(zhi)成的(de)，時(shi)間一長，絕緣(yuan)(yuan)層會老化漏電(dian)(dian)。

4、質量(liang)好的(de)電線，一般都在(zai)規定的(de)重量(liang)范圍內。價格(ge)上(shang)，由于假冒(mao)偽(wei)劣的(de)制作(zuo)成本低，因此，商販在(zai)銷(xiao)售時，常以(yi)物美(mei)價廉為(wei)幌子低價銷(xiao)售，讓人上(shang)當。

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