江蘇電線電纜常出現的幾大問題事項

電(dian)(dian)(dian)纜(lan)在我們(men)使(shi)用時，隨(sui)著使(shi)用年限(xian)的增加，會產生(sheng)各種各樣的故(gu)(gu)障(zhang)(zhang)(zhang)。如(ru)絕(jue)緣(yuan)損傷、絕(jue)緣(yuan)受潮、絕(jue)緣(yuan)老化變質、電(dian)(dian)(dian)纜(lan)過(guo)熱等，當(dang)這些故(gu)(gu)障(zhang)(zhang)(zhang)發(fa)生(sheng)時，應該切斷故(gu)(gu)障(zhang)(zhang)(zhang)電(dian)(dian)(dian)纜(lan)的電(dian)(dian)(dian)源，尋找發(fa)生(sheng)故(gu)(gu)障(zhang)(zhang)(zhang)的地點并分析造成故(gu)(gu)障(zhang)(zhang)(zhang)的原因，然后(hou)在故(gu)(gu)障(zhang)(zhang)(zhang)點進(jin)行一些修護處理(li)，在確(que)認沒有(you)其他(ta)問題后(hou)才能再次(ci)供電(dian)(dian)(dian)。那(nei)么電(dian)(dian)(dian)纜(lan)故(gu)(gu)障(zhang)(zhang)(zhang)最直接(jie)的原因主(zhu)要(yao)有(you)以(yi)下幾方面：

1、電(dian)(dian)氣方面有：電(dian)(dian)纜頭施工工藝達(da)不到要求(qiu)，電(dian)(dian)纜頭密(mi)封性差，潮氣侵入電(dian)(dian)纜內部，電(dian)(dian)纜絕緣性能下降(jiang);敷設(she)電(dian)(dian)纜時(shi)未能采(cai)取保(bao)護措施，保(bao)護層遭破壞(huai)，絕緣降(jiang)低。

2、土建(jian)方面：工(gong)(gong)(gong)井(jing)管溝排水不暢，電(dian)(dian)纜長期被(bei)水浸泡，損害絕緣強度;工(gong)(gong)(gong)井(jing)太小(xiao)，電(dian)(dian)纜彎曲半(ban)徑不夠(gou)，長期受擠壓外力破(po)壞。主要是市政(zheng)施工(gong)(gong)(gong)中機械野蠻(man)施工(gong)(gong)(gong)，挖傷挖斷電(dian)(dian)纜。

3、腐蝕。保護(hu)層長(chang)期遭受化學腐蝕或電纜(lan)腐蝕，致(zhi)使保護(hu)層失(shi)效，絕(jue)緣降(jiang)低。

4、長期超負荷運行，將使電纜溫度升高，絕緣老(lao)化，以(yi)致擊(ji)穿絕緣，降低施工質量。

5、電纜本身或是(shi)電纜頭附件質(zhi)量差，電纜頭密封(feng)性差，絕緣膠溶(rong)解，開裂，導致站出(chu)現(xian)的諧振現(xian)象為(wei)線路斷線故障使線路相(xiang)間電容及對地電容與配電變壓器勵磁(ci)電感構成諧振回路，從而激發(fa)鐵(tie)磁(ci)諧振。