正常(chang)電(dian)纜(lan)(lan)的電(dian)場(chang)只有(you)從（銅）導線(xian)(xian)沿半徑向（銅）屏蔽層(ceng)的電(dian)力(li)線(xian)(xian)，高壓電(dian)纜(lan)(lan)線(xian)(xian)價格多(duo)(duo)少(shao)錢一(yi)米，沒有(you)芯線(xian)(xian)軸向的電(dian)場(chang)（電(dian)力(li)線(xian)(xian)），電(dian)場(chang)分布是(shi)均勻的。機械設(she)備、儀器(qi)儀表系統：除(chu)架(jia)空裸電(dian)線(xian)(xian)外幾乎其他所有(you)產品均有(you)應用，但主(zhu)要是(shi)電(dian)力(li)電(dian)纜(lan)(lan)、電(dian)磁線(xian)(xian)、數據電(dian)纜(lan)(lan)、儀器(qi)儀表線(xian)(xian)纜(lan)(lan)等。35kV的高壓輸電(dian)線(xian)(xian)路則采用裸導線(xian)(xian)，因電(dian)壓等級的不(bu)同(tong)使用更多(duo)(duo)的瓷瓶進行絕緣；這一(yi)點你可(ke)以通過觀察你身(shen)邊的線(xian)(xian)路就(jiu)可(ke)以直(zhi)接看(kan)出來。

接線端子及連(lian)接管(guan)導體的連(lian)接。導體連(lian)接的基本要(yao)求是低且(qie)穩定的電(dian)阻，足夠的機械強度，耐電(dian)化腐蝕，耐振動，連(lian)接處不能出(chu)現毛刺。

內(nei)(nei)半導電(dian)屏(ping)(ping)(ping)蔽(bi)(bi)層(ceng)的(de)處(chu)理。具有內(nei)(nei)屏(ping)(ping)(ping)蔽(bi)(bi)層(ceng)的(de)電(dian)纜(lan)本體(ti)，在制作中間接(jie)(jie)頭(tou)時必須恢復壓接(jie)(jie)管(guan)導體(ti)部分(fen)的(de)接(jie)(jie)頭(tou)內(nei)(nei)屏(ping)(ping)(ping)蔽(bi)(bi)層(ceng)。電(dian)纜(lan)的(de)內(nei)(nei)半導電(dian)屏(ping)(ping)(ping)蔽(bi)(bi)均(jun)要留出一部分(fen)，以便使連接(jie)(jie)管(guan)上的(de)連接(jie)(jie)頭(tou)內(nei)(nei)屏(ping)(ping)(ping)蔽(bi)(bi)能夠相互連通，確保內(nei)(nei)半導電(dian)層(ceng)的(de)連續性，從而使接(jie)(jie)頭(tou)連接(jie)(jie)管(guan)處(chu)的(de)電(dian)場(chang)場(chang)強(qiang)均(jun)勻分(fen)布。

 合格的銅(tong)(tong)(tong)芯電(dian)(dian)(dian)線銅(tong)(tong)(tong)芯應(ying)該是(shi)紫(zi)紅色(se)、有光澤、手感軟。而的銅(tong)(tong)(tong)芯線銅(tong)(tong)(tong)芯為紫(zi)黑色(se)、偏(pian)黃或(huo)偏(pian)白，雜質多，機械(xie)強度差，韌性不(bu)佳，如電(dian)(dian)(dian)纜(lan)(lan)內(nei)(nei)部存在(zai)局(ju)部放電(dian)(dian)(dian)，但是(shi)電(dian)(dian)(dian)纜(lan)(lan)依然(ran)有可能(neng)(neng)能(neng)(neng)夠通過交流(liu)耐壓(ya)試(shi)驗(yan)，內(nei)(nei)部有缺陷的電(dian)(dian)(dian)纜(lan)(lan)帶(dai)病運行，電(dian)(dian)(dian)纜(lan)(lan)安全運行存在(zai)一定風險。電(dian)(dian)(dian)纜(lan)(lan)敷(fu)設時，應(ying)選擇堅實平(ping)坦地面(mian)支撐電(dian)(dian)(dian)纜(lan)(lan)軸。電(dian)(dian)(dian)纜(lan)(lan)在(zai)裝(zhuang)卸(xie)車時應(ying)采用(yong)三(san)腳架或(huo)吊車。嚴禁(jin)由車上直接(jie)猛力推落地面(mian)，以免(mian)電(dian)(dian)(dian)纜(lan)(lan)軸摔壞(huai)和損壞(huai)電(dian)(dian)(dian)纜(lan)(lan)。