輸變電(dian)(dian)(dian)(dian)（送(song)(song)變電(dian)(dian)(dian)(dian)工(gong)(gong)程）屬于(yu)建筑施工(gong)(gong)專業(ye)承(cheng)包序(xu)列(lie)，該(gai)類型企(qi)(qi)業(ye)資(zi)質(zhi)(zhi)分(fen)為一級(ji)(ji)(ji)、二(er)級(ji)(ji)(ji)、三級(ji)(ji)(ji)三個(ge)等(deng)級(ji)(ji)(ji)。送(song)(song)變電(dian)(dian)(dian)(dian)資(zi)質(zhi)(zhi)新(xin)辦企(qi)(qi)業(ye)，必(bi)須從三級(ji)(ji)(ji)開(kai)始(shi)辦理(li)申請，若想(xiang)辦理(li)更高級(ji)(ji)(ji)別(bie)，只有到達年限之后辦理(li)送(song)(song)變電(dian)(dian)(dian)(dian)資(zi)質(zhi)(zhi)升級(ji)(ji)(ji)。 一級(ji)(ji)(ji)企(qi)(qi)業(ye)：可承(cheng)擔(dan)各種電(dian)(dian)(dian)(dian)壓等(deng)級(ji)(ji)(ji)的(de)送(song)(song)電(dian)(dian)(dian)(dian)線路（含電(dian)(dian)(dian)(dian)纜(lan)工(gong)(gong)程）和變電(dian)(dian)(dian)(dian)站工(gong)(gong)程的(de)施工(gong)(gong)， 二(er)級(ji)(ji)(ji)企(qi)(qi)業(ye)：可承(cheng)擔(dan)單(dan)項合同額不超過(guo)企(qi)(qi)業(ye)注(zhu)冊資(zi)本(ben)金5倍的(de)220KV及以下送(song)(song)電(dian)(dian)(dian)(dian)線路（含電(dian)(dian)(dian)(dian)纜(lan)工(gong)(gong)程）和同電(dian)(dian)(dian)(dian)壓等(deng)級(ji)(ji)(ji)變電(dian)(dian)(dian)(dian)站工(gong)(gong)程的(de)施工(gong)(gong)。三級(ji)(ji)(ji)企(qi)(qi)業(ye)：可承(cheng)擔(dan)單(dan)項合同額不超過(guo)企(qi)(qi)業(ye)注(zhu)冊資(zi)本(ben)金5倍的(de)110KV及以下送(song)(song)電(dian)(dian)(dian)(dian)線路（含電(dian)(dian)(dian)(dian)纜(lan)工(gong)(gong)程）和同電(dian)(dian)(dian)(dian)壓等(deng)級(ji)(ji)(ji)變電(dian)(dian)(dian)(dian)站工(gong)(gong)程的(de)施工(gong)(gong)。資(zi)質(zhi)(zhi)新(xin)辦一般(ban)情(qing)況(kuang)下資(zi)質(zhi)(zhi)證書有效期(qi)是(shi)五年，在快要(yao)到期(qi)的(de)時(shi)候(hou)企(qi)(qi)業(ye)就要(yao)準備資(zi)質(zhi)(zhi)延續資(zi)料，一旦(dan)過(guo)期(qi)，資(zi)質(zhi)(zhi)就自動注(zhu)銷。