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

一(yi)、電(dian)(dian)纜(lan)(lan)按(an)應用(yong)(yong)分(fen)：（1）電(dian)(dian)力(li)(li)系(xi)統：架空裸電(dian)(dian)線(xian)(xian)、匯(hui)流排（母線(xian)(xian)）、電(dian)(dian)力(li)(li)電(dian)(dian)纜(lan)(lan)（塑料線(xian)(xian)纜(lan)(lan)、油(you)紙電(dian)(dian)纜(lan)(lan)（基(ji)本被塑料電(dian)(dian)力(li)(li)電(dian)(dian)纜(lan)(lan)代替(ti)）、橡套線(xian)(xian)纜(lan)(lan)、架空絕(jue)緣電(dian)(dian)纜(lan)(lan)）、分(fen)支電(dian)(dian)纜(lan)(lan)（取(qu)代部分(fen)母線(xian)(xian)）、電(dian)(dian)磁線(xian)(xian)以及電(dian)(dian)氣設備用(yong)(yong)線(xian)(xian)電(dian)(dian)纜(lan)(lan)等。（2）信(xin)息傳輸系(xi)統：市話電(dian)(dian)纜(lan)(lan)、電(dian)(dian)視(shi)電(dian)(dian)纜(lan)(lan)、...

1、規范施(shi)工(gong)在敷設(she)電(dian)(dian)(dian)纜(lan)時(shi)，施(shi)工(gong)人員必須保證施(shi)工(gong)質量，規范施(shi)工(gong)。在施(shi)工(gong)時(shi)要(yao)防止牽引力過(guo)大、彎曲過(guo)度(du)、填土不(bu)實、埋設(she)深度(du)不(bu)夠(gou)等造成(cheng)的(de)，機械性損傷。電(dian)(dian)(dian)纜(lan)的(de)中間接(jie)頭和終端頭統稱為電(dian)(dian)(dian)纜(lan)頭。電(dian)(dian)(dian)纜(lan)頭是影(ying)響(xiang)電(dian)(dian)(dian)纜(lan)絕緣性能的(de)關(guan)鍵部位(wei)，最容易成(cheng)為引火源。因此，電(dian)(dian)(dian)...

電力(li)電纜是在電力(li)系統中(zhong)傳輸或分配大功(gong)率電能用的(de)電纜。隨著(zhu)世界范圍(wei)內的(de)石油化學(xue)工業大發展，塑料絕緣電力(li)電纜由于其制造(zao)工藝簡單，施工、維護(hu)便捷，成為低壓(ya)電力(li)電纜中(zhong)的(de)重(zhong)要品(pin)種。然而在塑料絕緣擠制過程(cheng)中(zhong)不免會產生碰傷、刮傷、壓(ya)傷、擊穿等缺陷點，為了(le)...

電(dian)力(li)電(dian)纜(lan)(lan)的(de)絕緣(yuan)(yuan)層是由紙、油、麻(ma)、橡膠(jiao)、塑料、瀝青等各種(zhong)可(ke)燃(ran)物(wu)質組成(cheng)，因此，電(dian)纜(lan)(lan)具有起(qi)(qi)火(huo)爆(bao)炸(zha)的(de)可(ke)能性。導致電(dian)纜(lan)(lan)起(qi)(qi)火(huo)爆(bao)炸(zha)的(de)原因是：（1）絕緣(yuan)(yuan)損壞引(yin)起(qi)(qi)短路(lu)故障。電(dian)力(li)電(dian)纜(lan)(lan)的(de)保護鉛(qian)皮在敷設時被(bei)損壞或在運行中(zhong)電(dian)纜(lan)(lan)絕緣(yuan)(yuan)受機械損傷，引(yin)起(qi)(qi)電(dian)纜(lan)(lan)相間(jian)或鉛(qian)皮間(jian)的(de)絕...

在電(dian)(dian)(dian)力(li)線(xian)路中(zhong)，電(dian)(dian)(dian)纜(lan)(lan)(lan)所占(zhan)比重正逐漸增加(jia)。電(dian)(dian)(dian)力(li)電(dian)(dian)(dian)纜(lan)(lan)(lan)是在電(dian)(dian)(dian)力(li)系統的主(zhu)干(gan)線(xian)路中(zhong)用以傳輸(shu)和分配大功率電(dian)(dian)(dian)能(neng)的電(dian)(dian)(dian)纜(lan)(lan)(lan)產品，包括1-500KV以及(ji)以上各(ge)種電(dian)(dian)(dian)壓等級，各(ge)種絕緣的電(dian)(dian)(dian)力(li)電(dian)(dian)(dian)纜(lan)(lan)(lan)。電(dian)(dian)(dian)力(li)電(dian)(dian)(dian)纜(lan)(lan)(lan)的基本(ben)結構由線(xian)芯（導體）、絕緣層、屏蔽層和保護層四部分組成(cheng)。一、線(xian)...

在電(dian)(dian)(dian)力(li)線(xian)路中，電(dian)(dian)(dian)纜(lan)所占比重正逐漸增加。電(dian)(dian)(dian)力(li)電(dian)(dian)(dian)纜(lan)是在電(dian)(dian)(dian)力(li)系(xi)統的主(zhu)干線(xian)路中用(yong)以(yi)(yi)傳輸和分(fen)(fen)配大(da)功率電(dian)(dian)(dian)能的電(dian)(dian)(dian)纜(lan)產品，包括1-500KV以(yi)(yi)及以(yi)(yi)上各種電(dian)(dian)(dian)壓(ya)等級，各種絕緣的電(dian)(dian)(dian)力(li)電(dian)(dian)(dian)纜(lan)。一、按電(dian)(dian)(dian)壓(ya)等級分(fen)(fen)按電(dian)(dian)(dian)壓(ya)等級可(ke)分(fen)(fen)為中、低壓(ya)電(dian)(dian)(dian)力(li)電(dian)(dian)(dian)纜(lan)（35千(qian)伏及以(yi)(yi)下）、高壓(ya)電(dian)(dian)(dian)...