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聚氯乙烯電纜

聚氯乙烯絕(jue)緣電(dian)纜(lan)電(dian)線產品分為固(gu)定(ding)布(bu)(bu)線用(yong)(yong)(yong)無保護套(tao)電(dian)纜(lan)、固(gu)定(ding)布(bu)(bu)線用(yong)(yong)(yong)護套(tao)電(dian)纜(lan)、輕型無護套(tao)軟(ruan)(ruan)(ruan)電(dian)纜(lan)、一般用(yong)(yong)(yong)途護套(tao)軟(ruan)(ruan)(ruan)電(dian)纜(lan)、安裝用(yong)(yong)(yong)電(dian)纜(lan)和屏蔽電(dian)線、特殊用(yong)(yong)(yong)途保護套(tao)軟(ruan)(ruan)(ruan)電(dian)纜(lan)、聚氯乙烯絕(jue)緣阻燃耐(nai)火電(dian)纜(lan)等產品

歷史

電(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)纜行業是(shi)(shi)我國(guo)經(jing)濟建設的重要(yao)配(pei)套產業，廣泛應用于(yu)(yu)國(guo)民經(jing)濟各(ge)個(ge)領域，占據(ju)著中(zhong)國(guo)電(dian)(dian)(dian)工(gong)行業1/4的行業，是(shi)(shi)機械工(gong)業中(zhong)僅次于(yu)(yu)汽車(che)行業的第二大產業。其中(zhong)，室內裝(zhuang)修(xiu)使用的電(dian)(dian)(dian)線(xian)主要(yao)是(shi)(shi)額定(ding)電(dian)(dian)(dian)壓450/750v及以(yi)下聚(ju)氯(lv)乙烯絕緣(yuan)電(dian)(dian)(dian)纜，又稱(cheng)電(dian)(dian)(dian)線(xian)。

電線質量的考核(he)主要由專業檢(jian)驗機(ji)構(gou)進行檢(jian)驗，報(bao)告中主要的技術指標有以(yi)下(xia)：

1、導體(ti)直(zhi)流電阻。直(zhi)接反映(ying)電線(xian)的(de)載流能力，也就是(shi)(shi)通常所說能帶多大的(de)負載。該指標與導體(ti)材質、導體(ti)截(jie)面積（電線(xian)規格）也就是(shi)(shi)線(xian)徑有(you)關

2、成品耐壓試驗。主要考核電(dian)線(xian)的(de)絕(jue)緣(yuan)是否有(you)(you)漏電(dian)。該指標與絕(jue)緣(yuan)的(de)材(cai)料(liao)和(he)制造工(gong)藝有(you)(you)關(guan)

3、絕緣（護(hu)套）厚(hou)度(du)及機械性(xing)能等(deng)項(xiang)目。主要(yao)考(kao)核電線使(shi)用(yong)(yong)壽命(ming)及使(shi)用(yong)(yong)環境。絕緣厚(hou)度(du)過薄(bo)或扁(bian)芯，容易在(zai)安裝(zhuang)或使(shi)用(yong)(yong)中(zhong)在(zai)薄(bo)的位置(zhi)發生(sheng)破損，形成漏電。使(shi)用(yong)(yong)劣質絕緣材料的電線使(shi)用(yong)(yong)壽命(ming)短。

選購

1、首選(xuan)正(zheng)規廠(chang)家、商家產(chan)(chan)(chan)品。成盤包裝的電(dian)(dian)(dian)線應有(you)合(he)格(ge)證(zheng)，電(dian)(dian)(dian)線本體應印(yin)有(you)廠(chang)名或(huo)商標、電(dian)(dian)(dian)壓、3C標志等(deng)(deng)。廠(chang)家假冒偽劣電(dian)(dian)(dian)線往往是“三無”產(chan)(chan)(chan)品，但上(shang)面卻(que)也有(you)模棱兩(liang)可(ke)的產(chan)(chan)(chan)地等(deng)(deng)標識(shi)，如中(zhong)國制造、中(zhong)國某省或(huo)某市制造等(deng)(deng)，這實(shi)際等(deng)(deng)于(yu)未標產(chan)(chan)(chan)地。

2、布電(dian)線(xian)(xian)(xian)(xian)目前使(shi)用(yong)的導體材料主要有銅和鋁(lv)。在選(xuan)購時(shi)首先應(ying)根據使(shi)用(yong)的負載選(xuan)擇(ze)相(xiang)應(ying)的規格(ge)(ge)(ge)，如照明線(xian)(xian)(xian)(xian)路使(shi)用(yong)1.5平(ping)(ping)方毫米的鋁(lv)線(xian)(xian)(xian)(xian)或2.5平(ping)(ping)方毫米的鋁(lv)線(xian)(xian)(xian)(xian)，如空調、微(wei)波(bo)爐、烤箱等使(shi)用(yong)2.5平(ping)(ping)方毫米的銅線(xian)(xian)(xian)(xian)或4平(ping)(ping)方毫米的鋁(lv)線(xian)(xian)(xian)(xian)，選(xuan)擇(ze)合適規格(ge)(ge)(ge)的電(dian)線(xian)(xian)(xian)(xian)可(ke)避免由(you)于(yu)小規格(ge)(ge)(ge)電(dian)線(xian)(xian)(xian)(xian)載流量(liang)不夠引起短路發生火(huo)災；其次選(xuan)購時(shi)應(ying)注意(yi)導體的質量(liang)，合格(ge)(ge)(ge)的銅芯(xin)電(dian)線(xian)(xian)(xian)(xian)應(ying)使(shi)用(yong)紫紅色、有光澤、手(shou)感(gan)軟的銅線(xian)(xian)(xian)(xian)，而(er)偽劣的銅芯(xin)線(xian)(xian)(xian)(xian)銅芯(xin)為(wei)紫黑色、偏黃或偏白(bai)，雜(za)志多，機械強(qiang)度差(cha)，韌勁(jing)不佳(jia)，稍用(yong)力即會折斷(duan)，而(er)且如果多股銅絲常有斷(duan)線(xian)(xian)(xian)(xian)現象，使(shi)用(yong)壽(shou)命短。

3、布電(dian)線(xian)(xian)使(shi)用的外(wai)皮為聚氯乙烯絕(jue)(jue)緣材料。合(he)格的電(dian)線(xian)(xian)絕(jue)(jue)緣應(ying)該(gai)外(wai)觀光滑、表面印字清晰(xi)。從電(dian)線(xian)(xian)頭觀察，絕(jue)(jue)緣應(ying)均勻，不偏芯(xin)。有(you)些偽劣斷(duan)線(xian)(xian)絕(jue)(jue)緣層看上去似乎很厚實，實際上大(da)多是(shi)用再生塑料制成的，時間一長(chang)，絕(jue)(jue)緣層會老化(hua)漏電(dian)。

4、質量好的電線，一(yi)般都在(zai)規定的重(zhong)量范圍內(nei)。價(jia)格(ge)上(shang)，由于假冒偽劣的制作成本低，因此(ci)，商販在(zai)銷售(shou)時，常以物美價(jia)廉為(wei)幌子低價(jia)銷售(shou)，讓人上(shang)當(dang)。

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