電子線的(de)(de)(de)掩護層(ceng)在電(dian)(dian)纜中除掩護內(nei)芯和(he)絕緣以外(wai)，還能起到(dao)改良電(dian)(dian)場規劃的(de)(de)(de)感化，避免因導體外(wai)觀尖端突起引發放(fang)電(dian)(dian)，削減部分放(fang)電(dian)(dian)量，保障電(dian)(dian)纜的(de)(de)(de)操(cao)縱(zong)壽命和(he)靠得住性(xing)。

       ul電子線的(de)(de)掩護(hu)(hu)層在電(dian)(dian)纜(lan)中(zhong)能起到(dao)改良電(dian)(dian)場規劃的(de)(de)，避免因導體外(wai)觀尖(jian)端突起引發放電(dian)(dian)，削減部分(fen)放電(dian)(dian)量，保障電(dian)(dian)纜(lan)的(de)(de)操縱壽命和(he)靠得住性(xing)。在規范中(zhong)都(dou)有電(dian)(dian)壓等第(di)5kv的(de)(de)礦用(yong)(yong)橡(xiang)套(tao)電(dian)(dian)纜(lan)，并且(qie)都(dou)對(dui)該電(dian)(dian)壓等第(di)的(de)(de)橡(xiang)套(tao)電(dian)(dian)纜(lan)提(ti)出了導體掩護(hu)(hu)的(de)(de)前(qian)提(ti)，該掩護(hu)(hu)層必須采(cai)用(yong)(yong)環抱體例處置。按照這(zhe)一前(qian)提(ti)，礦用(yong)(yong)橡(xiang)套(tao)電(dian)(dian)纜(lan)也(ye)須有導體掩護(hu)(hu)層就可以或許(xu)保障電(dian)(dian)纜(lan)的(de)(de)寧靜運(yun)轉。