免费看黄色片_亚洲蜜桃V妇女_国产精品9999久久久久仙踪林_FREECHINESE内射少妇

城市配電(dian)(dian)(dian)(dian)網絡大量(liang)(liang)采(cai)用架(jia)空絕(jue)緣電(dian)(dian)(dian)(dian)纜線(xian)路(lu)(lu)，全(quan)國關于(yu)運行中的線(xian)路(lu)(lu)發生雷擊(ji)斷線(xian)和絕(jue)緣子擊(ji)穿事(shi)故的統計數量(liang)(liang)呈(cheng)急劇上(shang)升趨勢。試驗(yan)研(yan)究(jiu)和實(shi)際事(shi)故原因(yin)分(fen)析證實(shi)：架(jia)空絕(jue)緣電(dian)(dian)(dian)(dian)纜線(xian)路(lu)(lu)雷電(dian)(dian)(dian)(dian)過電(dian)(dian)(dian)(dian)壓(ya)閃(shan)絡時(shi)，瞬間電(dian)(dian)(dian)(dian)弧電(dian)(dian)(dian)(dian)流很(hen)大但(dan)時(shi)間很(hen)短，僅在架(jia)空絕(jue)緣電(dian)(dian)(dian)(dian)纜絕(jue)緣層上(shang)形(xing)成(cheng)擊(ji)穿孔(kong)...

  架(jia)(jia)空電(dian)(dian)(dian)纜(lan)（全稱架(jia)(jia)空絕(jue)緣電(dian)(dian)(dian)纜(lan)），是裝(zhuang)有絕(jue)緣層和保護(hu)外(wai)皮的(de)架(jia)(jia)空導線，采用類似(si)于(yu)交(jiao)聯電(dian)(dian)(dian)纜(lan)生(sheng)產工(gong)藝制造的(de)一種專用電(dian)(dian)(dian)纜(lan)，是介于(yu)架(jia)(jia)空導線和地(di)下電(dian)(dian)(dian)纜(lan)之(zhi)間的(de)新(xin)的(de)輸(shu)電(dian)(dian)(dian)方(fang)式 。架(jia)(jia)空絕(jue)緣電(dian)(dian)(dian)纜(lan)主要特點：1、供電(dian)(dian)(dian)可靠性高&n...

  架空絕緣電纜(lan)，是裝有絕緣層(ceng)和保(bao)護(hu)外皮的(de)(de)架空導線(xian)，采用類(lei)似于交聯電纜(lan)生(sheng)產工藝制造的(de)(de)一種專用電纜(lan)，是介于架空導線(xian)和地下電纜(lan)之間的(de)(de)新的(de)(de)輸電方式。架空電纜(lan)都是單芯(xin)的(de)(de)，按其結構(gou)不同可分為硬鋁線(xian)結構(gou)、硬拉銅(tong)線(xian)結構(gou)、鋁合金線(xian)...

額定電(dian)壓10KV架(jia)空絕緣(yuan)電(dian)纜由緊(jin)壓銅、鋁（鋁合金）導(dao)體，內屏(ping)蔽(bi)層和耐(nai)侯型絕緣(yuan)材料及外屏(ping)蔽(bi)層組成，既具(ju)有(you)電(dian)力電(dian)纜的(de)輸送電(dian)能特(te)性(xing)又具(ju)有(you)架(jia)空電(dian)纜較強的(de)機械性(xing)能：與裸電(dian)線相比，本產品具(ju)有(you)敷設(she)間距小，安全可靠(kao)性(xing)高(gao)，耐(nai)大氣老化性(xing)能優良(liang)等特(te)點(dian)，是新設(she)計(ji)建(jian)...