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聚氯乙烯電纜

聚氯乙烯絕緣電(dian)(dian)(dian)(dian)纜(lan)(lan)電(dian)(dian)(dian)(dian)線(xian)產(chan)品分為固定布(bu)線(xian)用無保護套(tao)電(dian)(dian)(dian)(dian)纜(lan)(lan)、固定布(bu)線(xian)用護套(tao)電(dian)(dian)(dian)(dian)纜(lan)(lan)、輕型無護套(tao)軟電(dian)(dian)(dian)(dian)纜(lan)(lan)、一般用途護套(tao)軟電(dian)(dian)(dian)(dian)纜(lan)(lan)、安(an)裝用電(dian)(dian)(dian)(dian)纜(lan)(lan)和屏蔽電(dian)(dian)(dian)(dian)線(xian)、特殊用途保護套(tao)軟電(dian)(dian)(dian)(dian)纜(lan)(lan)、聚氯乙烯絕緣阻燃耐(nai)火電(dian)(dian)(dian)(dian)纜(lan)(lan)等產(chan)品

歷史

電(dian)(dian)(dian)線電(dian)(dian)(dian)纜行(xing)(xing)業是(shi)我國經濟建(jian)設(she)的(de)(de)重要配套產(chan)業，廣泛應用(yong)于國民經濟各個領域，占據著中國電(dian)(dian)(dian)工行(xing)(xing)業1/4的(de)(de)行(xing)(xing)業，是(shi)機(ji)械工業中僅次于汽車行(xing)(xing)業的(de)(de)第二大產(chan)業。其中，室內裝修使(shi)用(yong)的(de)(de)電(dian)(dian)(dian)線主要是(shi)額定電(dian)(dian)(dian)壓450/750v及以(yi)下(xia)聚氯(lv)乙烯絕(jue)緣電(dian)(dian)(dian)纜，又(you)稱電(dian)(dian)(dian)線。

電(dian)線質量的(de)考核(he)主要由專(zhuan)業檢驗機構進行檢驗，報告中主要的(de)技(ji)術指標有以下(xia)：

1、導體直(zhi)流電阻。直(zhi)接反映電線(xian)的(de)載流能力，也就是(shi)通(tong)常所說能帶多大(da)的(de)負載。該指標與導體材質、導體截(jie)面積（電線(xian)規格）也就是(shi)線(xian)徑有關

2、成品耐壓(ya)試驗。主要(yao)考核電線的絕(jue)緣(yuan)是否有漏電。該指標與(yu)絕(jue)緣(yuan)的材(cai)料和制造工(gong)藝有關

3、絕(jue)(jue)緣（護套）厚度及機械(xie)性能等項(xiang)目。主要(yao)考核電線(xian)使(shi)(shi)用(yong)(yong)(yong)壽命及使(shi)(shi)用(yong)(yong)(yong)環境。絕(jue)(jue)緣厚度過薄(bo)或扁芯(xin)，容(rong)易在安(an)裝或使(shi)(shi)用(yong)(yong)(yong)中在薄(bo)的(de)位置發生破損，形成漏電。使(shi)(shi)用(yong)(yong)(yong)劣質絕(jue)(jue)緣材(cai)料的(de)電線(xian)使(shi)(shi)用(yong)(yong)(yong)壽命短。

選購

1、首(shou)選正規廠(chang)家、商家產(chan)品(pin)。成(cheng)盤包裝的電(dian)線應有合格證，電(dian)線本體應印有廠(chang)名或商標、電(dian)壓(ya)、3C標志(zhi)等(deng)。廠(chang)家假(jia)冒偽劣電(dian)線往往是“三無”產(chan)品(pin)，但上面卻也有模棱兩可的產(chan)地等(deng)標識，如中國制(zhi)造、中國某省或某市制(zhi)造等(deng)，這實際(ji)等(deng)于未標產(chan)地。

2、布電線(xian)(xian)目前(qian)使(shi)(shi)(shi)用的(de)(de)(de)導體(ti)材料(liao)主要有(you)銅(tong)(tong)(tong)和(he)鋁。在選購時(shi)首先應(ying)根(gen)據使(shi)(shi)(shi)用的(de)(de)(de)負(fu)載(zai)選擇相應(ying)的(de)(de)(de)規(gui)(gui)格(ge)，如(ru)照明線(xian)(xian)路使(shi)(shi)(shi)用1.5平(ping)方(fang)毫米(mi)的(de)(de)(de)鋁線(xian)(xian)或2.5平(ping)方(fang)毫米(mi)的(de)(de)(de)鋁線(xian)(xian)，如(ru)空調(diao)、微波爐(lu)、烤箱等使(shi)(shi)(shi)用2.5平(ping)方(fang)毫米(mi)的(de)(de)(de)銅(tong)(tong)(tong)線(xian)(xian)或4平(ping)方(fang)毫米(mi)的(de)(de)(de)鋁線(xian)(xian)，選擇合適規(gui)(gui)格(ge)的(de)(de)(de)電線(xian)(xian)可避免由(you)于小規(gui)(gui)格(ge)電線(xian)(xian)載(zai)流量不夠(gou)引起短路發生火災；其次選購時(shi)應(ying)注意導體(ti)的(de)(de)(de)質量，合格(ge)的(de)(de)(de)銅(tong)(tong)(tong)芯電線(xian)(xian)應(ying)使(shi)(shi)(shi)用紫紅色、有(you)光澤、手感軟的(de)(de)(de)銅(tong)(tong)(tong)線(xian)(xian)，而偽(wei)劣的(de)(de)(de)銅(tong)(tong)(tong)芯線(xian)(xian)銅(tong)(tong)(tong)芯為紫黑(hei)色、偏黃(huang)或偏白，雜志(zhi)多，機械(xie)強度差，韌勁不佳，稍用力即會折斷(duan)，而且如(ru)果多股(gu)銅(tong)(tong)(tong)絲常(chang)有(you)斷(duan)線(xian)(xian)現(xian)象，使(shi)(shi)(shi)用壽命短。

3、布電(dian)(dian)線(xian)使用(yong)的外皮為聚氯乙烯絕(jue)緣材料(liao)。合格的電(dian)(dian)線(xian)絕(jue)緣應(ying)該外觀(guan)光滑、表面(mian)印字清晰。從電(dian)(dian)線(xian)頭觀(guan)察，絕(jue)緣應(ying)均勻，不偏芯。有些偽劣斷線(xian)絕(jue)緣層(ceng)看上(shang)去似乎很厚實，實際上(shang)大(da)多是用(yong)再生塑料(liao)制成的，時間一長，絕(jue)緣層(ceng)會老化(hua)漏電(dian)(dian)。

4、質量(liang)好(hao)的(de)電(dian)線，一般都在規(gui)定(ding)的(de)重(zhong)量(liang)范圍內。價格上，由于(yu)假冒(mao)偽劣的(de)制(zhi)作成本(ben)低(di)，因此，商(shang)販在銷(xiao)售(shou)時(shi)，常以物美價廉為幌子低(di)價銷(xiao)售(shou)，讓(rang)人上當。

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