国产精品成人网站/两攻一受3p双龙h调教/玩弄人妻少妇500系列/人妻换人妻仑乱/国产成人一区二区三区别

聚氯乙烯電纜

聚(ju)氯乙(yi)烯(xi)絕緣電(dian)(dian)(dian)纜(lan)電(dian)(dian)(dian)線(xian)產(chan)品(pin)(pin)分為固定布線(xian)用(yong)(yong)(yong)無(wu)(wu)保(bao)護(hu)套電(dian)(dian)(dian)纜(lan)、固定布線(xian)用(yong)(yong)(yong)護(hu)套電(dian)(dian)(dian)纜(lan)、輕型無(wu)(wu)護(hu)套軟電(dian)(dian)(dian)纜(lan)、一般用(yong)(yong)(yong)途護(hu)套軟電(dian)(dian)(dian)纜(lan)、安(an)裝用(yong)(yong)(yong)電(dian)(dian)(dian)纜(lan)和屏蔽電(dian)(dian)(dian)線(xian)、特(te)殊用(yong)(yong)(yong)途保(bao)護(hu)套軟電(dian)(dian)(dian)纜(lan)、聚(ju)氯乙(yi)烯(xi)絕緣阻燃耐火電(dian)(dian)(dian)纜(lan)等產(chan)品(pin)(pin)

歷史

電(dian)(dian)線(xian)電(dian)(dian)纜行業是(shi)我國經(jing)濟(ji)建設的(de)重要(yao)配套產(chan)業，廣泛應用(yong)于國民(min)經(jing)濟(ji)各個(ge)領(ling)域(yu)，占據著中國電(dian)(dian)工行業1/4的(de)行業，是(shi)機械工業中僅(jin)次于汽車行業的(de)第二大產(chan)業。其中，室內(nei)裝修(xiu)使用(yong)的(de)電(dian)(dian)線(xian)主要(yao)是(shi)額定電(dian)(dian)壓450/750v及以(yi)下(xia)聚氯乙烯絕(jue)緣(yuan)電(dian)(dian)纜，又稱電(dian)(dian)線(xian)。

電(dian)線質量的(de)考核(he)主要由(you)專業檢驗機構進行檢驗，報告中主要的(de)技(ji)術指標(biao)有以(yi)下：

1、導(dao)體(ti)直流電阻(zu)。直接反映電線的(de)載流能(neng)力，也(ye)就是通(tong)常所說能(neng)帶多大的(de)負載。該(gai)指標與導(dao)體(ti)材(cai)質(zhi)、導(dao)體(ti)截(jie)面積（電線規格）也(ye)就是線徑有關

2、成品耐壓試驗(yan)。主要(yao)考核電(dian)線的絕(jue)緣(yuan)是否有(you)漏電(dian)。該指標與絕(jue)緣(yuan)的材(cai)料和(he)制造工藝有(you)關

3、絕(jue)緣(yuan)(yuan)（護套）厚(hou)(hou)度及機械(xie)性能等(deng)項目。主(zhu)要考核電(dian)線(xian)使(shi)用壽(shou)命(ming)及使(shi)用環境。絕(jue)緣(yuan)(yuan)厚(hou)(hou)度過薄(bo)或(huo)扁芯，容(rong)易(yi)在安裝或(huo)使(shi)用中(zhong)在薄(bo)的位(wei)置發生破損，形成漏電(dian)。使(shi)用劣質(zhi)絕(jue)緣(yuan)(yuan)材料的電(dian)線(xian)使(shi)用壽(shou)命(ming)短。

選購

1、首選正規廠家、商家產(chan)品。成盤包裝的電(dian)(dian)線(xian)應有(you)合格(ge)證，電(dian)(dian)線(xian)本體應印有(you)廠名或商標、電(dian)(dian)壓(ya)、3C標志等(deng)。廠家假(jia)冒偽劣電(dian)(dian)線(xian)往(wang)往(wang)是(shi)“三無(wu)”產(chan)品，但上面卻(que)也(ye)有(you)模棱兩可的產(chan)地等(deng)標識，如中(zhong)國制造(zao)、中(zhong)國某(mou)省或某(mou)市制造(zao)等(deng)，這實際等(deng)于未(wei)標產(chan)地。

2、布(bu)電(dian)線(xian)(xian)目前使(shi)用(yong)的(de)(de)導體(ti)材料主要有銅(tong)(tong)(tong)(tong)(tong)和鋁(lv)。在選(xuan)(xuan)購時首先(xian)應(ying)根據使(shi)用(yong)的(de)(de)負載(zai)(zai)選(xuan)(xuan)擇(ze)相應(ying)的(de)(de)規(gui)格(ge)(ge)，如(ru)照明線(xian)(xian)路使(shi)用(yong)1.5平方毫(hao)米的(de)(de)鋁(lv)線(xian)(xian)或2.5平方毫(hao)米的(de)(de)鋁(lv)線(xian)(xian)，如(ru)空調、微(wei)波爐、烤箱等使(shi)用(yong)2.5平方毫(hao)米的(de)(de)銅(tong)(tong)(tong)(tong)(tong)線(xian)(xian)或4平方毫(hao)米的(de)(de)鋁(lv)線(xian)(xian)，選(xuan)(xuan)擇(ze)合適規(gui)格(ge)(ge)的(de)(de)電(dian)線(xian)(xian)可避免由于小(xiao)規(gui)格(ge)(ge)電(dian)線(xian)(xian)載(zai)(zai)流(liu)量(liang)不夠引起短路發生火災(zai)；其次選(xuan)(xuan)購時應(ying)注意導體(ti)的(de)(de)質量(liang)，合格(ge)(ge)的(de)(de)銅(tong)(tong)(tong)(tong)(tong)芯電(dian)線(xian)(xian)應(ying)使(shi)用(yong)紫紅(hong)色、有光(guang)澤、手感軟(ruan)的(de)(de)銅(tong)(tong)(tong)(tong)(tong)線(xian)(xian)，而(er)偽(wei)劣的(de)(de)銅(tong)(tong)(tong)(tong)(tong)芯線(xian)(xian)銅(tong)(tong)(tong)(tong)(tong)芯為紫黑色、偏黃或偏白，雜(za)志多，機械(xie)強度差，韌勁不佳，稍用(yong)力即會折斷(duan)，而(er)且如(ru)果(guo)多股銅(tong)(tong)(tong)(tong)(tong)絲常有斷(duan)線(xian)(xian)現象，使(shi)用(yong)壽命短。

3、布電(dian)線(xian)使用的外皮為(wei)聚(ju)氯(lv)乙烯絕(jue)(jue)緣(yuan)材料。合格的電(dian)線(xian)絕(jue)(jue)緣(yuan)應該(gai)外觀光滑、表面印(yin)字清晰。從(cong)電(dian)線(xian)頭觀察，絕(jue)(jue)緣(yuan)應均(jun)勻，不偏芯。有(you)些偽劣斷線(xian)絕(jue)(jue)緣(yuan)層看(kan)上(shang)去(qu)似乎很(hen)厚實，實際上(shang)大多是用再生塑料制成的，時間一長，絕(jue)(jue)緣(yuan)層會(hui)老化漏(lou)電(dian)。

4、質量好的電線(xian)，一般都在(zai)(zai)規定的重(zhong)量范圍內(nei)。價格上，由于假冒偽(wei)劣的制作(zuo)成本低(di)，因此，商販(fan)在(zai)(zai)銷售時(shi)，常以物美價廉(lian)為幌(huang)子低(di)價銷售，讓人(ren)上當。

固定(ding)布線用聚氯(lv)乙烯絕緣無護套電纜

聚氯乙(yi)烯絕緣連(lian)接用軟線和軟電(dian)纜

固定布線用聚氯乙烯絕緣護套電纜

聚氯乙烯絕緣屏蔽(bi)電纜