電(dian)(dian)(dian)力(li)電(dian)(dian)(dian)纜(lan)(lan)的基(ji)本結(jie)構由線(xian)芯（導體(ti)）、絕緣(yuan)層、屏蔽(bi)層和保(bao)護(hu)層四部分組成。電(dian)(dian)(dian)力(li)電(dian)(dian)(dian)纜(lan)(lan)是用于傳輸和分配電(dian)(dian)(dian)能(neng)的電(dian)(dian)(dian)纜(lan)(lan)，電(dian)(dian)(dian)力(li)電(dian)(dian)(dian)纜(lan)(lan)常用于城市地(di)下(xia)電(dian)(dian)(dian)網、發電(dian)(dian)(dian)站引(yin)出線(xian)路、工礦企業(ye)內部供電(dian)(dian)(dian)及過江海水下(xia)輸電(dian)(dian)(dian)線(xian)。

  在(zai)電(dian)(dian)(dian)力線(xian)路中(zhong)，電(dian)(dian)(dian)纜所(suo)占比重(zhong)正逐漸(jian)增加。電(dian)(dian)(dian)力電(dian)(dian)(dian)纜是在(zai)電(dian)(dian)(dian)力系統的主(zhu)干線(xian)路中(zhong)用以傳輸和分(fen)配(pei)大功率電(dian)(dian)(dian)能的電(dian)(dian)(dian)纜產品，包(bao)括1-500KV以及以上各(ge)種電(dian)(dian)(dian)壓等(deng)級(ji)，各(ge)種絕(jue)緣(yuan)的電(dian)(dian)(dian)力電(dian)(dian)(dian)纜。

按電(dian)壓等級分

1、低(di)壓(ya)電纜：適用于固(gu)定(ding)敷(fu)設(she)在交流50Hz，額定(ding)電壓(ya)3kv及以下的(de)輸(shu)(shu)配(pei)電線路上作輸(shu)(shu)送電能用。

2、中低壓(ya)電纜：（一般指35KV及以下）：聚氯乙烯(xi)絕緣(yuan)電纜，聚乙烯(xi)絕緣(yuan)電纜，交(jiao)聯聚乙烯(xi)絕緣(yuan)電纜等。

3、高壓電(dian)纜(lan)：（一(yi)般為110KV及(ji)以上）：聚(ju)乙烯電(dian)纜(lan)和交聯(lian)聚(ju)乙烯絕緣電(dian)纜(lan)等。

4、超高壓電纜：（275～800千伏）。

5、特高(gao)壓電纜：（1000千伏及以上）。