WDZNB-YJV22電(dian)(dian)纜是(shi)一(yi)種(zhong)交(jiao)聯聚乙烯(xi)絕緣(yuan)的中高(gao)壓電(dian)(dian)纜，其額定(ding)電(dian)(dian)壓為(wei)0.6/1kV，符(fu)合GB12706標準。這(zhe)種(zhong)電(dian)(dian)纜的特點(dian)在于(yu)其內部(bu)和(he)外部(bu)的結構組成。

　　內部(bu)結構：內部(bu)由線(xian)芯(xin)(xin)、絕緣(yuan)層、屏蔽(bi)(bi)層和保護(hu)(hu)層組成。線(xian)芯(xin)(xin)是(shi)(shi)電(dian)(dian)(dian)纜(lan)的導電(dian)(dian)(dian)部(bu)分，主要作用是(shi)(shi)傳輸電(dian)(dian)(dian)能。絕緣(yuan)層將線(xian)芯(xin)(xin)與打底以及不同相的線(xian)芯(xin)(xin)間在電(dian)(dian)(dian)氣上彼此隔離，目的就是(shi)(shi)保障電(dian)(dian)(dian)能可以正常(chang)輸送(song)。屏蔽(bi)(bi)層主要作用是(shi)(shi)可將產生的電(dian)(dian)(dian)磁場屏蔽(bi)(bi)在電(dian)(dian)(dian)纜(lan)中，保護(hu)(hu)周邊元(yuan)件(jian)。

　　外部結構(gou)：外部由(you)導體屏(ping)蔽(bi)(bi)層(ceng)(ceng)、聚(ju)(ju)(ju)氯(lv)(lv)乙(yi)(yi)烯護(hu)(hu)套、雙(shuang)鋼(gang)帶(dai)(dai)鎧裝和聚(ju)(ju)(ju)氯(lv)(lv)乙(yi)(yi)烯外護(hu)(hu)套組(zu)成。導體屏(ping)蔽(bi)(bi)層(ceng)(ceng)主(zhu)要作用(yong)(yong)是防(fang)止線芯與絕緣層(ceng)(ceng)之間產生物(wu)理化學(xue)反(fan)應。聚(ju)(ju)(ju)氯(lv)(lv)乙(yi)(yi)烯護(hu)(hu)套在電纜(lan)的(de)外部，起到機械(xie)保(bao)護(hu)(hu)的(de)作用(yong)(yong)。雙(shuang)鋼(gang)帶(dai)(dai)鎧裝進一步(bu)增強了電纜(lan)的(de)機械(xie)性能，使得電纜(lan)更適(shi)用(yong)(yong)于承受較大(da)的(de)機械(xie)外力(li)。聚(ju)(ju)(ju)氯(lv)(lv)乙(yi)(yi)烯外護(hu)(hu)套最(zui)外層(ceng)(ceng)，起到防(fang)水防(fang)潮(chao)的(de)保(bao)護(hu)(hu)作用(yong)(yong)。