交聯聚乙烯具有優良的(de)(de)電氣絕(jue)緣(yuan)性(xing)能(neng)，經過(guo)交聯后(hou)，它的(de)(de)耐(nai)熱(re)和機(ji)械性(xing)能(neng)大幅度(du)地(di)提高，是目前理想的(de)(de)絕(jue)緣(yuan)材(cai)(cai)料。導體(ti)包覆絕(jue)緣(yuan)層(ceng)后(hou)稱為絕(jue)緣(yuan)線(xian)芯。每(mei)個導體(ti)上的(de)(de)絕(jue)緣(yuan)層(ceng)，稱為線(xian)芯的(de)(de)絕(jue)緣(yuan)或簡稱芯絕(jue)緣(yuan)。絕(jue)緣(yuan)層(ceng)的(de)(de)材(cai)(cai)料必須具有良好的(de)(de)電氣絕(jue)緣(yuan)性(xing)能(neng)，主要表現為承受電壓(ya)的(de)(de)大小。一般地(di)講，同一質量的(de)(de)絕(jue)緣(yuan)層(ceng)愈厚，耐(nai)電壓(ya)也越(yue)高。扇(shan)(shan)形(xing)芯中(zhong)心線(xian)上導線(xian)的(de)(de)直(zhi)徑一般較大，處在其兩側的(de)(de)導線(xian)應能(neng)沿中(zhong)心線(xian)上導線(xian)滑(hua)動而不改變扇(shan)(shan)形(xing)芯形(xing)狀，這一規則(ze)(ze)稱為移(yi)滑(hua)規則(ze)(ze)，否則(ze)(ze)，當扇(shan)(shan)形(xing)芯絞合成纜時，扇(shan)(shan)形(xing)可能(neng)被破壞而損傷(shang)絕(jue)緣(yuan)。

WDZ電(dian)(dian)纜(lan)比WDZN電(dian)(dian)纜(lan)價格略低10~20%。這個(ge)看(kan)每家電(dian)(dian)纜(lan)廠工藝和成本價格不(bu)(bu)一，綠(lv)寶電(dian)(dian)纜(lan)為您提(ti)供，安全的電(dian)(dian)線(xian)電(dian)(dian)纜(lan)。成品電(dian)(dian)壓(ya)試驗及絕緣(yuan)線(xian)芯間電(dian)(dian)壓(ya)試驗不(bu)(bu)光要求電(dian)(dian)纜(lan)有(you)足(zu)夠的絕緣(yuan)能力(li)，還(huan)要求絕緣(yuan)或(huo)護套(tao)材(cai)料均勻(yun)無(wu)雜(za)質、厚度(du)足(zu)夠均勻(yun)，表面不(bu)(bu)能有(you)看(kan)不(bu)(bu)見的、等，否則就會(hui)造成耐壓(ya)試驗時局部擊穿。電(dian)(dian)纜(lan)就是利用導體(ti)來(lai)傳導電(dian)(dian)流(liu)的，因而(er)電(dian)(dian)線(xian)電(dian)(dian)纜(lan)的規格都以導體(ti)的截(jie)面表示。電(dian)(dian)力(li)電(dian)(dian)纜(lan)的導體(ti)，可(ke)以制成整根實(shi)心的，或(huo)是由多根單線(xian)絞合而(er)成，形(xing)狀可(ke)以是圓形(xing)的和扇形(xing)的結構。

交(jiao)聯(lian)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)護(hu)(hu)層(ceng)(ceng)主要(yao)有裸護(hu)(hu)套(tao)和(he)(he)鎧(kai)(kai)裝型兩種，在(zai)(zai)不經受(shou)機械(xie)外(wai)(wai)力(li)情況(kuang)下，選用裸護(hu)(hu)套(tao)，電(dian)(dian)(dian)(dian)(dian)線(xian)(xian)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)生產廠家，即直(zhi)(zhi)接在(zai)(zai)絕(jue)緣(yuan)(yuan)線(xian)(xian)芯外(wai)(wai)面擠包一(yi)(yi)層(ceng)(ceng)塑料(liao)，如果用于直(zhi)(zhi)埋或要(yao)經受(shou)一(yi)(yi)定的(de)機械(xie)外(wai)(wai)力(li)，需(xu)要(yao)包上(shang)金屬帶鎧(kai)(kai)裝；110kV高壓(ya)交(jiao)聯(lian)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)或其它電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)埋設在(zai)(zai)水(shui)下，則需(xu)要(yao)防(fang)水(shui)護(hu)(hu)層(ceng)(ceng)，包上(shang)一(yi)(yi)層(ceng)(ceng)鉛套(tao)、鋁(lv)套(tao)或鋁(lv)塑綜合(he)防(fang)水(shui)層(ceng)(ceng)。絕(jue)緣(yuan)(yuan)電(dian)(dian)(dian)(dian)(dian)阻、成(cheng)品電(dian)(dian)(dian)(dian)(dian)壓(ya)試驗及絕(jue)緣(yuan)(yuan)線(xian)(xian)芯間(jian)電(dian)(dian)(dian)(dian)(dian)壓(ya)試驗，均考查的(de)是(shi)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)絕(jue)緣(yuan)(yuan)層(ceng)(ceng)和(he)(he)護(hu)(hu)套(tao)層(ceng)(ceng)的(de)電(dian)(dian)(dian)(dian)(dian)氣(qi)絕(jue)緣(yuan)(yuan)性能，絕(jue)緣(yuan)(yuan)電(dian)(dian)(dian)(dian)(dian)阻是(shi)檢測(ce)兩個導(dao)體之間(jian)絕(jue)緣(yuan)(yuan)材(cai)料(liao)的(de)電(dian)(dian)(dian)(dian)(dian)阻，它應(ying)足(zu)夠大以起到絕(jue)緣(yuan)(yuan)保護(hu)(hu)作(zuo)用。WDZN耐火(huo)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)的(de)主要(yao)特點是(shi)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)除了能在(zai)(zai)正(zheng)常的(de)工作(zuo)條件下傳輸電(dian)(dian)(dian)(dian)(dian)力(li)外(wai)(wai)，電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)在(zai)(zai)著火(huo)燃(ran)燒時(shi)仍能保持一(yi)(yi)定時(shi)間(jian)的(de)正(zheng)常運行，適用于站(zhan)、地鐵、隧道(dao)、高層(ceng)(ceng)建筑等與防(fang)火(huo)安全和(he)(he)消防(fang)救生有關的(de)地方。