怎樣保護(hu)電(dian)(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)(dian)纜(lan)1，電(dian)(dian)(dian)(dian)絕(jue)緣管耐(nai)腐蝕(shi)性(xing)比較(jiao)好(hao)(hao)，可以有效的使(shi)電(dian)(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)(dian)纜(lan)的使(shi)用壽(shou)命延長(chang)，適應(ying)各種環境。2，絕(jue)緣性(xing)較(jiao)好(hao)(hao)，具(ju)有阻燃(ran)、耐(nai)熱的特性(xing)，可在130度(du)高溫(wen)下(xia)長(chang)期使(shi)用而不變形。3，剛度(du)韌(ren)性(xing)較(jiao)好(hao)(hao)，可直埋在行車道(dao)下(xia)不需要加(jia)混(hun)凝土作(zuo)為保護(hu)層。4，電(dian)(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)(dian)纜(lan)保護(hu)套管無(wu)論是管材還是管件(jian)都(dou)具(ju)有一(yi)定的柔性(xing)，能(neng)抵御外(wai)界重壓(ya)和基(ji)礎沉降(jiang)所引(yin)起的破(po)壞。5，具(ju)有良好(hao)(hao)的抗信號干擾性(xing)能(neng)。6，電(dian)(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)(dian)纜(lan)保護(hu)套內壁(bi)光滑，不會刮傷電(dian)(dian)(dian)(dian)纜(lan)。設(she)計采用承(cheng)插式的連接方(fang)式，方(fang)便安(an)裝(zhuang)連接。接頭處加(jia)橡(xiang)膠密封圈封即適應(ying)熱脹冷縮(suo)，又防(fang)止泥(ni)砂進入。

中高(gao)壓電(dian)(dian)(dian)纜(lan)(lan)芯(xin)(xin)(xin)(xin)數的選(xuan)(xuan)(xuan)(xuan)(xuan)擇(ze)對于(yu)3~35kV三(san)相供電(dian)(dian)(dian)回(hui)(hui)(hui)(hui)路電(dian)(dian)(dian)纜(lan)(lan)芯(xin)(xin)(xin)(xin)數的選(xuan)(xuan)(xuan)(xuan)(xuan)擇(ze)。當工作電(dian)(dian)(dian)流較大(da)(da)的回(hui)(hui)(hui)(hui)路或(huo)(huo)電(dian)(dian)(dian)纜(lan)(lan)敷(fu)設于(yu)水下(xia)時，每回(hui)(hui)(hui)(hui)路可(ke)選(xuan)(xuan)(xuan)(xuan)(xuan)用(yong)(yong)3根(gen)單(dan)(dan)芯(xin)(xin)(xin)(xin)電(dian)(dian)(dian)纜(lan)(lan)；除上述情況外，應選(xuan)(xuan)(xuan)(xuan)(xuan)用(yong)(yong)3芯(xin)(xin)(xin)(xin)電(dian)(dian)(dian)纜(lan)(lan)，3芯(xin)(xin)(xin)(xin)電(dian)(dian)(dian)纜(lan)(lan)可(ke)選(xuan)(xuan)(xuan)(xuan)(xuan)用(yong)(yong)普通統包型，也可(ke)選(xuan)(xuan)(xuan)(xuan)(xuan)用(yong)(yong)3根(gen)單(dan)(dan)芯(xin)(xin)(xin)(xin)電(dian)(dian)(dian)纜(lan)(lan)絞(jiao)合構造(zao)型。對110kV三(san)相供電(dian)(dian)(dian)回(hui)(hui)(hui)(hui)路，除敷(fu)設于(yu)湖、海(hai)水下(xia)等場所且電(dian)(dian)(dian)纜(lan)(lan)截面不(bu)大(da)(da)時可(ke)選(xuan)(xuan)(xuan)(xuan)(xuan)用(yong)(yong)3芯(xin)(xin)(xin)(xin)外，每回(hui)(hui)(hui)(hui)路可(ke)選(xuan)(xuan)(xuan)(xuan)(xuan)用(yong)(yong)3根(gen)單(dan)(dan)芯(xin)(xin)(xin)(xin)電(dian)(dian)(dian)纜(lan)(lan)。對110kV以上三(san)相供電(dian)(dian)(dian)回(hui)(hui)(hui)(hui)路，每回(hui)(hui)(hui)(hui)路應選(xuan)(xuan)(xuan)(xuan)(xuan)用(yong)(yong)3根(gen)單(dan)(dan)芯(xin)(xin)(xin)(xin)電(dian)(dian)(dian)纜(lan)(lan)。電(dian)(dian)(dian)氣化鐵路等高(gao)壓交流單(dan)(dan)相供電(dian)(dian)(dian)回(hui)(hui)(hui)(hui)路，應選(xuan)(xuan)(xuan)(xuan)(xuan)用(yong)(yong)2芯(xin)(xin)(xin)(xin)電(dian)(dian)(dian)纜(lan)(lan)或(huo)(huo)每回(hui)(hui)(hui)(hui)選(xuan)(xuan)(xuan)(xuan)(xuan)用(yong)(yong)2根(gen)單(dan)(dan)芯(xin)(xin)(xin)(xin)電(dian)(dian)(dian)纜(lan)(lan)。高(gao)壓直流輸(shu)電(dian)(dian)(dian)系(xi)統，宜選(xuan)(xuan)(xuan)(xuan)(xuan)用(yong)(yong)單(dan)(dan)芯(xin)(xin)(xin)(xin)電(dian)(dian)(dian)纜(lan)(lan)；在(zai)湖、海(hai)等水下(xia)敷(fu)設時，也可(ke)選(xuan)(xuan)(xuan)(xuan)(xuan)用(yong)(yong)同軸(zhou)型2芯(xin)(xin)(xin)(xin)電(dian)(dian)(dian)纜(lan)(lan)。

焊(han)接(jie)塑料(liao)時，注意焊(han)熱(re)風溫度(du)不要太高，以免修(xiu)補處塑料(liao)焦燒。修(xiu)好(hao)后(hou)(hou)的(de)(de)缺(que)陷(xian)處經火花機試(shi)驗，綠寶礦用電(dian)纜廠(chang)家，不擊穿為合格(ge)。2。斷(duan)膠、裂(lie)紋、凹陷(xian)、口子等修(xiu)補方法用刀在塑料(liao)層缺(que)陷(xian)部位割成45°角(jiao)的(de)(de)坡(po)形(xing)，去形(xing)狀、顏色、厚度(du)一致的(de)(de)塑料(liao)塊或條，用鉗(qian)子或螺絲(si)刀固(gu)定(ding)好(hao)后(hou)(hou)，用熱(re)風速焊(han)接(jie)好(hao)，然后(hou)(hou)用銅片壓實(shi)、壓緊、壓平，后(hou)(hou)經火花機試(shi)驗，不擊穿為合格(ge)。