WDZ電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)比WDZN電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)價(jia)格(ge)略(lve)低10~20%。這個看(kan)(kan)每家電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)廠(chang)工藝和(he)成(cheng)本(ben)價(jia)格(ge)不(bu)(bu)一，綠寶電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)為您提(ti)供，安全的(de)電(dian)(dian)(dian)(dian)(dian)(dian)線電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)。成(cheng)品電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)試驗及絕緣(yuan)線芯間電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)試驗不(bu)(bu)光要求電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)有足夠的(de)絕緣(yuan)能力(li)，還要求絕緣(yuan)或護套材料(liao)均(jun)勻無雜質(zhi)、厚度足夠均(jun)勻，表(biao)面不(bu)(bu)能有看(kan)(kan)不(bu)(bu)見的(de)、等，否則就(jiu)會造成(cheng)耐壓(ya)試驗時(shi)局(ju)部擊(ji)穿。電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)就(jiu)是(shi)(shi)利用(yong)導(dao)(dao)體(ti)(ti)來傳導(dao)(dao)電(dian)(dian)(dian)(dian)(dian)(dian)流的(de)，因而電(dian)(dian)(dian)(dian)(dian)(dian)線電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)的(de)規(gui)格(ge)都(dou)以(yi)(yi)導(dao)(dao)體(ti)(ti)的(de)截面表(biao)示(shi)。電(dian)(dian)(dian)(dian)(dian)(dian)力(li)電(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)的(de)導(dao)(dao)體(ti)(ti)，可以(yi)(yi)制成(cheng)整根實心的(de)，或是(shi)(shi)由(you)多根單線絞合(he)而成(cheng)，形狀可以(yi)(yi)是(shi)(shi)圓形的(de)和(he)扇形的(de)結構。

中高壓(ya)(ya)電(dian)(dian)(dian)纜(lan)一(yi)般(ban)采用(yong)過(guo)氧化物交(jiao)聯(lian)(lian)，即用(yong)化學(xue)方法將(jiang)線性分子(zi)通過(guo)化學(xue)交(jiao)聯(lian)(lian)反(fan)應(ying)(ying)起來，轉化為立體網(wang)狀結(jie)構。化學(xue)交(jiao)聯(lian)(lian)一(yi)般(ban)還(huan)可(ke)分為過(guo)氧化物交(jiao)聯(lian)(lian)和接枝交(jiao)聯(lian)(lian)兩(liang)種。每層(ceng)單線的(de)絞合(he)方向應(ying)(ying)和前一(yi)層(ceng)方向相反(fan)，外層(ceng)應(ying)(ying)用(yong)左(zuo)向絞合(he)。這(zhe)種結(jie)構可(ke)保(bao)證(zheng)電(dian)(dian)(dian)纜(lan)導電(dian)(dian)(dian)線芯(xin)的(de)穩定(ding)性和一(yi)定(ding)的(de)柔(rou)軟性。絕緣層(ceng)的(de)材料必須具有良好的(de)電(dian)(dian)(dian)氣絕緣性能，主要表現(xian)為承受電(dian)(dian)(dian)壓(ya)(ya)的(de)大小(xiao)。一(yi)般(ban)地講(jiang)，同一(yi)質量的(de)絕緣層(ceng)愈厚，耐(nai)電(dian)(dian)(dian)壓(ya)(ya)也越高。

電(dian)(dian)纜(lan)(lan)就是利(li)用導體來傳導電(dian)(dian)流(liu)的(de)，因(yin)而(er)電(dian)(dian)線(xian)電(dian)(dian)纜(lan)(lan)的(de)規格都(dou)以(yi)(yi)導體的(de)截面(mian)表示。電(dian)(dian)力電(dian)(dian)纜(lan)(lan)的(de)導體，可(ke)以(yi)(yi)制成(cheng)整根實(shi)心(xin)的(de)，或是由(you)多根單線(xian)絞(jiao)合(he)而(er)成(cheng)，形狀(zhuang)可(ke)以(yi)(yi)是圓形的(de)和扇形的(de)結(jie)構(gou)。中(zhong)高壓(ya)電(dian)(dian)纜(lan)(lan)一般采用過氧化(hua)物(wu)交(jiao)(jiao)聯，即用化(hua)學方法將線(xian)性分子通過化(hua)學交(jiao)(jiao)聯反應(ying)起(qi)來，轉化(hua)為(wei)立體網狀(zhuang)結(jie)構(gou)。化(hua)學交(jiao)(jiao)聯一般還可(ke)分為(wei)過氧化(hua)物(wu)交(jiao)(jiao)聯和接(jie)枝交(jiao)(jiao)聯兩種。由(you)于它(ta)經(jing)受不住機(ji)械損(sun)傷，mpp電(dian)(dian)力電(dian)(dian)纜(lan)(lan)管，因(yin)而(er)還需(xu)包(bao)上(shang)(shang)鋼(gang)絲、鋼(gang)帶。鋼(gang)絲、鋼(gang)帶容(rong)易被腐(fu)蝕(shi)，鉛套、鋁套在惡劣環境(jing)下也(ye)容(rong)易被腐(fu)蝕(shi)，因(yin)而(er)還需(xu)包(bao)上(shang)(shang)各(ge)種防(fang)腐(fu)材料，如瀝青(qing)、黃麻(ma)、塑料等。這些(xie)都(dou)統稱(cheng)為(wei)外護(hu)層。其中(zhong)鋼(gang)絲、鋼(gang)帶稱(cheng)為(wei)鎧裝(zhuang)層，瀝青(qing)、黃麻(ma)、塑料稱(cheng)為(wei)防(fang)護(hu)層。