保(bao)障電纜(lan)(lan)(lan)設(she)(she)備(bei)安(an)(an)全的(de)(de)重(zhong)要性電纜(lan)(lan)(lan)設(she)(she)備(bei)具(ju)有傳輸(shu)容量(liang)大、損耗小(xiao)、靈活性高、占地空間小(xiao)、無污染(ran)等顯著優點，近年來隨著我國(guo)國(guo)民經(jing)濟的(de)(de)高速發展(zhan)，電纜(lan)(lan)(lan)設(she)(she)備(bei)需(xu)求急劇增長，特(te)別(bie)是(shi)迅(xun)猛發展(zhan)的(de)(de)大城(cheng)市和(he)城(cheng)市密集居住(zhu)地區。電纜(lan)(lan)(lan)設(she)(she)備(bei)的(de)(de)安(an)(an)全性是(shi)保(bao)證電纜(lan)(lan)(lan)設(she)(she)備(bei)運行安(an)(an)全的(de)(de)重(zhong)要手段，也是(shi)電纜(lan)(lan)(lan)設(she)(she)備(bei)實用(yong)化過(guo)程(cheng)中需(xu)要重(zhong)點解決的(de)(de)關鍵問題。因此(ci)，如何(he)保(bao)障電纜(lan)(lan)(lan)設(she)(she)備(bei)的(de)(de)安(an)(an)全性具(ju)有十分重(zhong)要的(de)(de)理論和(he)現實意(yi)義。

電纜生(sheng)產過程(cheng)中一些(xie)關(guan)于工(gong)(gong)藝(yi)(yi)的問題1、絞(jiao)合導電線(xian)(xian)(xian)芯的質量(liang)要(yao)求有哪些(xie)？答：絞(jiao)合線(xian)(xian)(xian)芯應緊密、圓整、平直、無(wu)嚴重(zhong)彎曲、無(wu)跳股(gu)、無(wu)擦傷(shang)、壓(ya)扁，銅(tong)線(xian)(xian)(xian)表(biao)面(mian)無(wu)氧化、發黑、鍍錫線(xian)(xian)(xian)層脫落或錫粒、節(jie)(jie)距(ju)均(jun)勻、接(jie)頭平整牢(lao)固(gu)、排線(xian)(xian)(xian)整齊、線(xian)(xian)(xian)徑符合公差規(gui)定(ding)、長度符合規(gui)定(ding)要(yao)求。2、絞(jiao)線(xian)(xian)(xian)工(gong)(gong)開車前(qian)要(yao)做(zuo)哪些(xie)準(zhun)備(bei)工(gong)(gong)作？答：(1)檢(jian)查絞(jiao)線(xian)(xian)(xian)機(ji)(ji)各部分是否正常(chang)，運轉(zhuan)部位是否有障礙物(wu)；(2)檢(jian)查機(ji)(ji)電設備(bei)，電器開關(guan)、欄架保險是否正常(chang)；(3)檢(jian)查對焊機(ji)(ji)是否正常(chang)；(4)檢(jian)查工(gong)(gong)具、量(liang)具是否齊全；(5)根據派工(gong)(gong)單、工(gong)(gong)藝(yi)(yi)卡片(pian)要(yao)求選配壓(ya)模，耐火電線(xian)(xian)(xian)電纜，更換節(jie)(jie)距(ju)搭牙(ya)齒(chi)輪、更換絞(jiao)向測量(liang)線(xian)(xian)(xian)徑等(deng)。

銅(tong)芯電(dian)(dian)纜(lan)對比鋁(lv)(lv)芯電(dian)(dian)纜(lan)的幾(ji)點(dian)優勢(shi)？1。電(dian)(dian)阻(zu)率(lv)低：鋁(lv)(lv)芯電(dian)(dian)纜(lan)的電(dian)(dian)阻(zu)率(lv)比銅(tong)芯電(dian)(dian)纜(lan)約高(gao)1。68倍。2。延(yan)展性好：銅(tong)合金(jin)的延(yan)展率(lv)為20~40%，電(dian)(dian)工用銅(tong)的延(yan)展率(lv)在30%以上，電(dian)(dian)線電(dian)(dian)纜(lan)價格表，而鋁(lv)(lv)合金(jin)僅(jin)為18%。3。強度高(gao)：常溫(wen)下(xia)的允許應(ying)(ying)力，工業電(dian)(dian)線電(dian)(dian)纜(lan)，銅(tong)比鋁(lv)(lv)分別(bie)高(gao)出7~28%。特別(bie)是(shi)高(gao)溫(wen)下(xia)的應(ying)(ying)力，兩者相(xiang)差更是(shi)甚遠。4。抗(kang)1疲勞(lao)：鋁(lv)(lv)材反復折(zhe)彎(wan)易斷裂，池州電(dian)(dian)線，銅(tong)則不易。彈性指標方(fang)面，銅(tong)也(ye)比鋁(lv)(lv)高(gao)約1。7~1。8倍。5。穩定性好，耐腐(fu)蝕(shi)：銅(tong)芯抗(kang)1氧(yang)化，耐腐(fu)蝕(shi)，而鋁(lv)(lv)芯容易受氧(yang)化和腐(fu)蝕(shi)。