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聚氯乙烯電纜

聚氯乙烯(xi)絕緣電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)電(dian)(dian)(dian)(dian)(dian)線(xian)產品分為固定布(bu)線(xian)用(yong)(yong)(yong)無(wu)保(bao)護(hu)套(tao)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)、固定布(bu)線(xian)用(yong)(yong)(yong)護(hu)套(tao)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)、輕型無(wu)護(hu)套(tao)軟電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)、一般用(yong)(yong)(yong)途護(hu)套(tao)軟電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)、安裝用(yong)(yong)(yong)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)和屏蔽電(dian)(dian)(dian)(dian)(dian)線(xian)、特(te)殊用(yong)(yong)(yong)途保(bao)護(hu)套(tao)軟電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)、聚氯乙烯(xi)絕緣阻燃(ran)耐火(huo)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)等產品

歷史

電線(xian)電纜行業是(shi)我國經(jing)濟建設的(de)重要配套產業，廣泛應用于國民(min)經(jing)濟各個(ge)領域，占據著中(zhong)國電工(gong)行業1/4的(de)行業，是(shi)機(ji)械工(gong)業中(zhong)僅(jin)次(ci)于汽車(che)行業的(de)第二大產業。其中(zhong)，室內裝修使用的(de)電線(xian)主要是(shi)額(e)定(ding)電壓450/750v及以下聚氯(lv)乙烯(xi)絕緣電纜，又稱電線(xian)。

電線質量的考核(he)主(zhu)要由專(zhuan)業檢(jian)驗機構進行檢(jian)驗，報告中(zhong)主(zhu)要的技術指標有(you)以下：

1、導(dao)體(ti)直(zhi)流電阻。直(zhi)接(jie)反映電線的載(zai)流能(neng)力，也(ye)就(jiu)是通常所說能(neng)帶多大(da)的負載(zai)。該指標與導(dao)體(ti)材質、導(dao)體(ti)截面積（電線規(gui)格）也(ye)就(jiu)是線徑有關

2、成品耐壓(ya)試驗。主要考(kao)核(he)電線(xian)的絕緣是否有漏電。該(gai)指標(biao)與絕緣的材(cai)料和制(zhi)造工藝有關(guan)

3、絕緣（護套）厚(hou)度及(ji)機械性能(neng)等項目。主要考(kao)核(he)電線(xian)使(shi)用(yong)壽命及(ji)使(shi)用(yong)環境。絕緣厚(hou)度過薄或扁(bian)芯，容易(yi)在安裝或使(shi)用(yong)中在薄的位(wei)置發生破損(sun)，形成漏電。使(shi)用(yong)劣質(zhi)絕緣材料的電線(xian)使(shi)用(yong)壽命短。

選購

1、首選(xuan)正規(gui)廠家、商家產品。成(cheng)盤包裝的電(dian)線(xian)應有合格證，電(dian)線(xian)本(ben)體應印有廠名或(huo)商標、電(dian)壓、3C標志等。廠家假(jia)冒偽劣電(dian)線(xian)往往是“三無”產品，但上面卻也有模棱兩可的產地(di)等標識，如中(zhong)國制(zhi)造、中(zhong)國某(mou)省或(huo)某(mou)市制(zhi)造等，這實際等于未標產地(di)。

2、布(bu)電線(xian)(xian)目(mu)前使(shi)(shi)(shi)用(yong)的(de)(de)(de)導體(ti)(ti)材料主(zhu)要(yao)有銅(tong)(tong)和鋁(lv)。在選購時首先應根據使(shi)(shi)(shi)用(yong)的(de)(de)(de)負載選擇(ze)相應的(de)(de)(de)規格(ge)，如照明線(xian)(xian)路使(shi)(shi)(shi)用(yong)1.5平(ping)(ping)方(fang)(fang)毫(hao)米(mi)(mi)的(de)(de)(de)鋁(lv)線(xian)(xian)或(huo)2.5平(ping)(ping)方(fang)(fang)毫(hao)米(mi)(mi)的(de)(de)(de)鋁(lv)線(xian)(xian)，如空(kong)調、微波爐、烤箱等使(shi)(shi)(shi)用(yong)2.5平(ping)(ping)方(fang)(fang)毫(hao)米(mi)(mi)的(de)(de)(de)銅(tong)(tong)線(xian)(xian)或(huo)4平(ping)(ping)方(fang)(fang)毫(hao)米(mi)(mi)的(de)(de)(de)鋁(lv)線(xian)(xian)，選擇(ze)合適規格(ge)的(de)(de)(de)電線(xian)(xian)可避免由(you)于(yu)小(xiao)規格(ge)電線(xian)(xian)載流量不(bu)夠引起短路發生火災；其次選購時應注意導體(ti)(ti)的(de)(de)(de)質量，合格(ge)的(de)(de)(de)銅(tong)(tong)芯電線(xian)(xian)應使(shi)(shi)(shi)用(yong)紫紅色(se)、有光(guang)澤、手感軟的(de)(de)(de)銅(tong)(tong)線(xian)(xian)，而(er)偽劣的(de)(de)(de)銅(tong)(tong)芯線(xian)(xian)銅(tong)(tong)芯為紫黑色(se)、偏黃或(huo)偏白(bai)，雜志(zhi)多，機械強度差，韌勁不(bu)佳，稍用(yong)力即會(hui)折斷，而(er)且如果多股銅(tong)(tong)絲常有斷線(xian)(xian)現象，使(shi)(shi)(shi)用(yong)壽(shou)命短。

3、布電線(xian)(xian)使(shi)用(yong)的(de)外皮為(wei)聚氯乙烯(xi)絕緣材料(liao)。合格的(de)電線(xian)(xian)絕緣應(ying)(ying)該外觀光滑、表面印(yin)字(zi)清晰。從電線(xian)(xian)頭觀察，絕緣應(ying)(ying)均(jun)勻，不偏芯。有(you)些偽劣斷線(xian)(xian)絕緣層看上去似乎很厚(hou)實，實際上大(da)多是(shi)用(yong)再生塑料(liao)制(zhi)成的(de)，時間一長，絕緣層會老化漏電。

4、質量好(hao)的(de)電線，一(yi)般都(dou)在(zai)規(gui)定的(de)重量范圍內。價(jia)格(ge)上(shang)，由于假(jia)冒偽劣的(de)制作成本低，因此，商販在(zai)銷售時，常(chang)以物美價(jia)廉(lian)為幌子低價(jia)銷售，讓(rang)人(ren)上(shang)當。

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