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聚氯乙烯電纜

聚氯乙烯(xi)絕緣電(dian)(dian)(dian)(dian)纜(lan)電(dian)(dian)(dian)(dian)線產(chan)品(pin)分為固定(ding)布線用(yong)無(wu)保護(hu)套(tao)電(dian)(dian)(dian)(dian)纜(lan)、固定(ding)布線用(yong)護(hu)套(tao)電(dian)(dian)(dian)(dian)纜(lan)、輕(qing)型無(wu)護(hu)套(tao)軟電(dian)(dian)(dian)(dian)纜(lan)、一般用(yong)途護(hu)套(tao)軟電(dian)(dian)(dian)(dian)纜(lan)、安裝(zhuang)用(yong)電(dian)(dian)(dian)(dian)纜(lan)和(he)屏蔽(bi)電(dian)(dian)(dian)(dian)線、特殊用(yong)途保護(hu)套(tao)軟電(dian)(dian)(dian)(dian)纜(lan)、聚氯乙烯(xi)絕緣阻燃耐(nai)火電(dian)(dian)(dian)(dian)纜(lan)等產(chan)品(pin)

歷史

電(dian)線(xian)電(dian)纜行業(ye)(ye)(ye)是(shi)我(wo)國經(jing)濟(ji)建(jian)設(she)的重要配套產業(ye)(ye)(ye)，廣泛應用于國民經(jing)濟(ji)各個領域(yu)，占(zhan)據著中國電(dian)工行業(ye)(ye)(ye)1/4的行業(ye)(ye)(ye)，是(shi)機(ji)械工業(ye)(ye)(ye)中僅次于汽(qi)車行業(ye)(ye)(ye)的第二大(da)產業(ye)(ye)(ye)。其中，室內裝修(xiu)使用的電(dian)線(xian)主要是(shi)額定電(dian)壓450/750v及以下聚氯乙烯絕緣電(dian)纜，又稱電(dian)線(xian)。

電(dian)線質量的考核主要由(you)專業(ye)檢驗(yan)機構進行(xing)檢驗(yan)，報告(gao)中主要的技(ji)術指標有以下：

1、導(dao)(dao)體直流(liu)電阻。直接反映電線的(de)載流(liu)能力，也就(jiu)是通常所說能帶多(duo)大的(de)負載。該指(zhi)標(biao)與導(dao)(dao)體材(cai)質(zhi)、導(dao)(dao)體截(jie)面積（電線規格）也就(jiu)是線徑(jing)有(you)關

2、成品(pin)耐(nai)壓試驗。主要考核電線(xian)的(de)絕(jue)緣是否有漏電。該指標與絕(jue)緣的(de)材料和制造工藝有關

3、絕緣(yuan)(yuan)（護套）厚度(du)及(ji)機械性能等(deng)項目。主要考核電(dian)線使(shi)(shi)用(yong)(yong)壽命及(ji)使(shi)(shi)用(yong)(yong)環境(jing)。絕緣(yuan)(yuan)厚度(du)過(guo)薄(bo)或扁(bian)芯，容易在(zai)安裝或使(shi)(shi)用(yong)(yong)中在(zai)薄(bo)的位置發生破損，形(xing)成(cheng)漏電(dian)。使(shi)(shi)用(yong)(yong)劣(lie)質絕緣(yuan)(yuan)材料的電(dian)線使(shi)(shi)用(yong)(yong)壽命短。

選購

1、首選正(zheng)規廠(chang)家(jia)、商家(jia)產(chan)品。成盤包裝的電線(xian)應有合(he)格證，電線(xian)本體應印有廠(chang)名或商標(biao)(biao)(biao)、電壓、3C標(biao)(biao)(biao)志等(deng)。廠(chang)家(jia)假(jia)冒(mao)偽劣電線(xian)往(wang)往(wang)是“三(san)無”產(chan)品，但上(shang)面卻(que)也(ye)有模棱兩可的產(chan)地(di)等(deng)標(biao)(biao)(biao)識，如中國制造、中國某省(sheng)或某市制造等(deng)，這實際等(deng)于未標(biao)(biao)(biao)產(chan)地(di)。

2、布(bu)電(dian)線(xian)(xian)目(mu)前(qian)使(shi)用的(de)(de)(de)(de)導(dao)體材料主要有銅(tong)(tong)(tong)(tong)(tong)和鋁。在選(xuan)(xuan)購時(shi)首(shou)先應根據使(shi)用的(de)(de)(de)(de)負載選(xuan)(xuan)擇相應的(de)(de)(de)(de)規格(ge)，如(ru)照(zhao)明線(xian)(xian)路使(shi)用1.5平(ping)方(fang)毫米的(de)(de)(de)(de)鋁線(xian)(xian)或(huo)(huo)2.5平(ping)方(fang)毫米的(de)(de)(de)(de)鋁線(xian)(xian)，如(ru)空調、微波(bo)爐(lu)、烤箱等使(shi)用2.5平(ping)方(fang)毫米的(de)(de)(de)(de)銅(tong)(tong)(tong)(tong)(tong)線(xian)(xian)或(huo)(huo)4平(ping)方(fang)毫米的(de)(de)(de)(de)鋁線(xian)(xian)，選(xuan)(xuan)擇合適規格(ge)的(de)(de)(de)(de)電(dian)線(xian)(xian)可避免(mian)由于(yu)小規格(ge)電(dian)線(xian)(xian)載流(liu)量不夠引起短路發生火災；其次選(xuan)(xuan)購時(shi)應注意(yi)導(dao)體的(de)(de)(de)(de)質量，合格(ge)的(de)(de)(de)(de)銅(tong)(tong)(tong)(tong)(tong)芯電(dian)線(xian)(xian)應使(shi)用紫(zi)紅色、有光澤(ze)、手感軟的(de)(de)(de)(de)銅(tong)(tong)(tong)(tong)(tong)線(xian)(xian)，而偽劣的(de)(de)(de)(de)銅(tong)(tong)(tong)(tong)(tong)芯線(xian)(xian)銅(tong)(tong)(tong)(tong)(tong)芯為紫(zi)黑(hei)色、偏黃或(huo)(huo)偏白(bai)，雜志(zhi)多(duo)，機械強度差，韌勁不佳，稍用力即會折斷，而且如(ru)果多(duo)股銅(tong)(tong)(tong)(tong)(tong)絲常有斷線(xian)(xian)現(xian)象，使(shi)用壽(shou)命(ming)短。

3、布電線(xian)使用(yong)的外(wai)皮為聚氯(lv)乙烯(xi)絕緣材料。合格(ge)的電線(xian)絕緣應(ying)該外(wai)觀光滑、表面(mian)印字清晰。從(cong)電線(xian)頭(tou)觀察，絕緣應(ying)均(jun)勻，不偏芯(xin)。有些(xie)偽劣斷(duan)線(xian)絕緣層看上(shang)去似乎很厚實(shi)，實(shi)際上(shang)大多(duo)是(shi)用(yong)再生塑料制成(cheng)的，時間一長(chang)，絕緣層會老化漏電。

4、質量好的電線，一般都在規定的重量范圍內。價格上(shang)，由于假冒(mao)偽劣的制(zhi)作成本低(di)，因(yin)此，商販在銷售(shou)時，常(chang)以物美價廉為幌子低(di)價銷售(shou)，讓人(ren)上(shang)當。

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