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聚氯乙烯電纜

聚(ju)氯乙烯絕緣(yuan)電(dian)(dian)纜(lan)電(dian)(dian)線產品(pin)分為(wei)固(gu)定布線用(yong)無(wu)保護套電(dian)(dian)纜(lan)、固(gu)定布線用(yong)護套電(dian)(dian)纜(lan)、輕型無(wu)護套軟電(dian)(dian)纜(lan)、一般用(yong)途護套軟電(dian)(dian)纜(lan)、安裝用(yong)電(dian)(dian)纜(lan)和屏蔽電(dian)(dian)線、特殊(shu)用(yong)途保護套軟電(dian)(dian)纜(lan)、聚(ju)氯乙烯絕緣(yuan)阻燃耐火電(dian)(dian)纜(lan)等產品(pin)

歷史

電(dian)(dian)線(xian)電(dian)(dian)纜行(xing)業(ye)是(shi)我國(guo)經濟(ji)建設的重(zhong)要配套產業(ye)，廣泛應用于國(guo)民(min)經濟(ji)各個領域，占據著中國(guo)電(dian)(dian)工(gong)行(xing)業(ye)1/4的行(xing)業(ye)，是(shi)機械工(gong)業(ye)中僅(jin)次于汽(qi)車行(xing)業(ye)的第(di)二大(da)產業(ye)。其中，室(shi)內裝(zhuang)修使(shi)用的電(dian)(dian)線(xian)主要是(shi)額定電(dian)(dian)壓(ya)450/750v及以(yi)下聚氯(lv)乙烯絕緣電(dian)(dian)纜，又稱電(dian)(dian)線(xian)。

電(dian)線質量的考核(he)主要由專業檢(jian)(jian)驗機構進行檢(jian)(jian)驗，報告中(zhong)主要的技術指標(biao)有以下：

1、導(dao)體直(zhi)流(liu)電(dian)阻。直(zhi)接反(fan)映(ying)電(dian)線的(de)載流(liu)能力，也就是通常所說(shuo)能帶多大的(de)負載。該指標(biao)與(yu)導(dao)體材質、導(dao)體截面積（電(dian)線規格）也就是線徑(jing)有(you)關

2、成品耐壓試驗。主(zhu)要考核電線的絕(jue)(jue)緣(yuan)是否有漏電。該指(zhi)標(biao)與絕(jue)(jue)緣(yuan)的材料和(he)制造工藝有關

3、絕(jue)緣（護(hu)套）厚度及(ji)(ji)機(ji)械性能等(deng)項(xiang)目。主(zhu)要(yao)考(kao)核電(dian)(dian)線使(shi)(shi)(shi)用壽命(ming)及(ji)(ji)使(shi)(shi)(shi)用環(huan)境。絕(jue)緣厚度過薄(bo)或扁芯，容易(yi)在(zai)安(an)裝或使(shi)(shi)(shi)用中在(zai)薄(bo)的位(wei)置發生破損，形成漏電(dian)(dian)。使(shi)(shi)(shi)用劣(lie)質(zhi)絕(jue)緣材(cai)料的電(dian)(dian)線使(shi)(shi)(shi)用壽命(ming)短。

選購

1、首選正規廠(chang)家、商(shang)家產品。成盤包(bao)裝(zhuang)的電(dian)線(xian)(xian)應(ying)有合格(ge)證(zheng)，電(dian)線(xian)(xian)本體應(ying)印有廠(chang)名或商(shang)標(biao)(biao)、電(dian)壓、3C標(biao)(biao)志等。廠(chang)家假(jia)冒偽劣電(dian)線(xian)(xian)往(wang)往(wang)是“三(san)無”產品，但上面卻(que)也有模棱兩可的產地等標(biao)(biao)識(shi)，如中(zhong)國制(zhi)造、中(zhong)國某(mou)省或某(mou)市(shi)制(zhi)造等，這實際(ji)等于(yu)未標(biao)(biao)產地。

2、布電線(xian)(xian)(xian)目前使(shi)用(yong)(yong)(yong)(yong)的導(dao)(dao)體(ti)(ti)材料主(zhu)要有銅和鋁(lv)(lv)。在選購時首(shou)先(xian)應(ying)(ying)根(gen)據使(shi)用(yong)(yong)(yong)(yong)的負載選擇相(xiang)應(ying)(ying)的規(gui)(gui)格，如(ru)照明線(xian)(xian)(xian)路(lu)使(shi)用(yong)(yong)(yong)(yong)1.5平方毫(hao)米(mi)的鋁(lv)(lv)線(xian)(xian)(xian)或2.5平方毫(hao)米(mi)的鋁(lv)(lv)線(xian)(xian)(xian)，如(ru)空調、微波爐、烤箱等使(shi)用(yong)(yong)(yong)(yong)2.5平方毫(hao)米(mi)的銅線(xian)(xian)(xian)或4平方毫(hao)米(mi)的鋁(lv)(lv)線(xian)(xian)(xian)，選擇合適規(gui)(gui)格的電線(xian)(xian)(xian)可避免由于小規(gui)(gui)格電線(xian)(xian)(xian)載流(liu)量不(bu)(bu)夠引(yin)起短路(lu)發生火災；其次選購時應(ying)(ying)注意(yi)導(dao)(dao)體(ti)(ti)的質量，合格的銅芯電線(xian)(xian)(xian)應(ying)(ying)使(shi)用(yong)(yong)(yong)(yong)紫(zi)(zi)紅色(se)、有光澤、手感軟的銅線(xian)(xian)(xian)，而偽劣的銅芯線(xian)(xian)(xian)銅芯為紫(zi)(zi)黑色(se)、偏(pian)黃或偏(pian)白，雜志多，機械強(qiang)度差，韌(ren)勁(jing)不(bu)(bu)佳，稍用(yong)(yong)(yong)(yong)力(li)即(ji)會折斷，而且如(ru)果多股銅絲常有斷線(xian)(xian)(xian)現象，使(shi)用(yong)(yong)(yong)(yong)壽命(ming)短。

3、布電(dian)(dian)線使用的外皮為聚(ju)氯乙烯絕(jue)緣材料(liao)。合格的電(dian)(dian)線絕(jue)緣應(ying)該外觀光滑(hua)、表面(mian)印字(zi)清(qing)晰。從電(dian)(dian)線頭(tou)觀察，絕(jue)緣應(ying)均勻(yun)，不偏芯。有些(xie)偽劣斷線絕(jue)緣層看上去似(si)乎很厚實，實際上大多是用再生塑(su)料(liao)制成的，時間一長，絕(jue)緣層會老化漏電(dian)(dian)。

4、質量好的電線，一(yi)般都(dou)在規(gui)定(ding)的重量范圍(wei)內。價格上(shang)，由于假冒偽劣的制(zhi)作(zuo)成本(ben)低(di)(di)，因此，商販在銷(xiao)售時，常以物(wu)美價廉(lian)為幌(huang)子低(di)(di)價銷(xiao)售，讓人上(shang)當(dang)。

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