絕(jue)緣層(ceng)是廣(guang)東環市珠(zhu)江(jiang)高(gao)壓電力(li)電纜產品的重要組成部分(fen)之一，其材質(zhi)問題關乎到(dao)(dao)高(gao)壓電力(li)電纜的使用質(zhi)量。這是由于(yu)絕(jue)緣層(ceng)接(jie)觸到(dao)(dao)的工作很容易引(yin)發安全事(shi)故。

通(tong)常情況下，高壓電(dian)力電(dian)纜(lan)不(bu)合格(ge)(ge)多是標志(zhi)不(bu)合格(ge)(ge)、結構(gou)尺寸不(bu)合格(ge)(ge)、導體電(dian)阻不(bu)合格(ge)(ge)、護套式絕緣(yuan)老化(hua)前的(de)抗張強度和伸長率不(bu)合格(ge)(ge)等(deng)等(deng)，

（1）結構尺寸不(bu)合格主(zhu)要(yao)指的是高(gao)壓電(dian)(dian)(dian)(dian)(dian)力(li)(li)(li)電(dian)(dian)(dian)(dian)(dian)纜(lan)的護套(tao)(tao)和絕緣(yuan)(yuan)厚度不(bu)達標，當這些(xie)要(yao)求沒有達標時，致使(shi)高(gao)壓電(dian)(dian)(dian)(dian)(dian)力(li)(li)(li)電(dian)(dian)(dian)(dian)(dian)纜(lan)耐電(dian)(dian)(dian)(dian)(dian)氣(qi)強度會(hui)嚴重降低，導致高(gao)壓電(dian)(dian)(dian)(dian)(dian)力(li)(li)(li)電(dian)(dian)(dian)(dian)(dian)纜(lan)的使(shi)用壽(shou)命縮短(duan)，嚴重時可導致電(dian)(dian)(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)(dian)(dian)纜(lan)被擊穿，絕緣(yuan)(yuan)（護套(tao)(tao)）層(ceng)起不(bu)到正(zheng)常保(bao)護作(zuo)用，從而(er)發生電(dian)(dian)(dian)(dian)(dian)氣(qi)短(duan)路和火災(zai)等(deng)現象；

（2）導體電阻(zu)超標，就加大了(le)電流在線路上通過時的損(sun)耗，加劇了(le)高壓電力電纜的發(fa)熱。

（3）當(dang)高壓電(dian)力電(dian)纜的產(chan)品型號(hao)、規格(ge)、標準號(hao)、廠名(ming)、產(chan)地等標志不合格(ge)時(shi)，會(hui)造成施工人員識別(bie)錯誤，嚴重時(shi)會(hui)引發(fa)電(dian)氣事故；

在(zai)這里還(huan)要提(ti)醒大(da)家(jia)，在(zai)高壓電力電纜(lan)周圍發生火情時，用絕熱耐燃性(xing)材料(liao)與(yu)火源(yuan)隔(ge)離包(bao)扎電纜(lan)，可防止電纜(lan)燒(shao)壞。若電纜(lan)本(ben)身著火，由于(yu)包(bao)裹體(ti)內的氧氣不足，會使(shi)火自燃，從而(er)避(bi)免火勢蔓延到(dao)包(bao)裹體(ti)。