WDZ電(dian)(dian)纜(lan)(lan)(lan)(lan)比(bi)WDZN電(dian)(dian)纜(lan)(lan)(lan)(lan)價(jia)格略低10~20%。這個看(kan)每家電(dian)(dian)纜(lan)(lan)(lan)(lan)廠工藝和成(cheng)(cheng)本(ben)價(jia)格不(bu)一，綠(lv)寶(bao)電(dian)(dian)纜(lan)(lan)(lan)(lan)為(wei)您提供，安全的(de)電(dian)(dian)線電(dian)(dian)纜(lan)(lan)(lan)(lan)。成(cheng)(cheng)品(pin)電(dian)(dian)壓試驗(yan)(yan)及絕(jue)緣線芯(xin)間電(dian)(dian)壓試驗(yan)(yan)不(bu)光要求電(dian)(dian)纜(lan)(lan)(lan)(lan)有足夠的(de)絕(jue)緣能力，還要求絕(jue)緣或護套(tao)材料(liao)均勻(yun)無雜質、厚度足夠均勻(yun)，表(biao)面(mian)不(bu)能有看(kan)不(bu)見的(de)、等，否則就(jiu)會(hui)造成(cheng)(cheng)耐壓試驗(yan)(yan)時(shi)局部(bu)擊穿(chuan)。電(dian)(dian)纜(lan)(lan)(lan)(lan)就(jiu)是利用導(dao)體來(lai)傳導(dao)電(dian)(dian)流的(de)，因而電(dian)(dian)線電(dian)(dian)纜(lan)(lan)(lan)(lan)的(de)規格都以導(dao)體的(de)截面(mian)表(biao)示。電(dian)(dian)力電(dian)(dian)纜(lan)(lan)(lan)(lan)的(de)導(dao)體，電(dian)(dian)線電(dian)(dian)纜(lan)(lan)(lan)(lan)廠家，可以制成(cheng)(cheng)整根實(shi)心的(de)，或是由多根單線絞合而成(cheng)(cheng)，形(xing)狀可以是圓形(xing)的(de)和扇形(xing)的(de)結構。

耐火(huo)電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)與阻(zu)燃(ran)電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)的(de)(de)(de)(de)原(yuan)理不(bu)同：含鹵電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)阻(zu)燃(ran)原(yuan)理是(shi)靠(kao)(kao)鹵素的(de)(de)(de)(de)阻(zu)燃(ran)效應，無鹵電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)阻(zu)燃(ran)原(yuan)理是(shi)靠(kao)(kao)析出水降(jiang)低溫(wen)度來熄滅(mie)火(huo)焙；耐火(huo)電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)是(shi)靠(kao)(kao)耐火(huo)層(ceng)(ceng)中云母材(cai)料的(de)(de)(de)(de)耐火(huo)、耐熱的(de)(de)(de)(de)特性，保證電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)在火(huo)災時也工(gong)作(zuo)正常。電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)通電(dian)(dian)(dian)(dian)以(yi)后，導(dao)體要(yao)(yao)發熱。因此(ci)，比較理想的(de)(de)(de)(de)絕(jue)(jue)緣(yuan)材(cai)料，應有良好(hao)(hao)的(de)(de)(de)(de)絕(jue)(jue)緣(yuan)性能(neng)(neng)，和良好(hao)(hao)的(de)(de)(de)(de)熱傳導(dao)性能(neng)(neng)。絕(jue)(jue)緣(yuan)在電(dian)(dian)(dian)(dian)和熱的(de)(de)(de)(de)作(zuo)用(yong)(yong)下，內部會產生(sheng)變化，天長日久，絕(jue)(jue)緣(yuan)性能(neng)(neng)就要(yao)(yao)降(jiang)低。護層(ceng)(ceng)是(shi)電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)外層(ceng)(ceng)的(de)(de)(de)(de)保護部分(fen)。根據(ju)電(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)的(de)(de)(de)(de)用(yong)(yong)途(tu)以(yi)及使用(yong)(yong)環境和絕(jue)(jue)緣(yuan)的(de)(de)(de)(de)不(bu)同，護層(ceng)(ceng)有許多不(bu)同型(xing)式和結構(gou)，它們所起(qi)的(de)(de)(de)(de)作(zuo)用(yong)(yong)也不(bu)盡相同。

導(dao)(dao)體(ti)是指能(neng)傳導(dao)(dao)電(dian)(dian)(dian)流(liu)的(de)物體(ti)，又稱為(wei)(wei)導(dao)(dao)電(dian)(dian)(dian)線芯(xin)。用(yong)作電(dian)(dian)(dian)線電(dian)(dian)(dian)纜(lan)導(dao)(dao)體(ti)的(de)材料，首(shou)先要有良好的(de)導(dao)(dao)電(dian)(dian)(dian)性(xing)能(neng)，即電(dian)(dian)(dian)阻要小，以(yi)減少電(dian)(dian)(dian)流(liu)在線路上的(de)損耗。損耗與電(dian)(dian)(dian)流(liu)大(da)小、電(dian)(dian)(dian)阻大(da)小有直接關系，并表現在導(dao)(dao)體(ti)的(de)發熱上。護(hu)層(ceng)是電(dian)(dian)(dian)纜(lan)外(wai)層(ceng)的(de)保護(hu)部(bu)分。根據電(dian)(dian)(dian)纜(lan)的(de)用(yong)途以(yi)及使用(yong)環境和絕(jue)緣的(de)不(bu)同(tong)(tong)，護(hu)層(ceng)有許多不(bu)同(tong)(tong)型式和結構，它們所(suo)起(qi)的(de)作用(yong)也不(bu)盡相同(tong)(tong)。中高壓電(dian)(dian)(dian)纜(lan)一(yi)般(ban)(ban)采用(yong)過氧化(hua)(hua)(hua)物交(jiao)聯(lian)，即用(yong)化(hua)(hua)(hua)學方法(fa)將線性(xing)分子通過化(hua)(hua)(hua)學交(jiao)聯(lian)反應起(qi)來，轉化(hua)(hua)(hua)為(wei)(wei)立(li)體(ti)網狀結構。化(hua)(hua)(hua)學交(jiao)聯(lian)一(yi)般(ban)(ban)還可分為(wei)(wei)過氧化(hua)(hua)(hua)物交(jiao)聯(lian)和接枝交(jiao)聯(lian)兩種(zhong)。