預分支(zhi)電纜(lan)和普通電纜(lan)的區別可以說是(shi)多(duo)出了N個接頭，一般是(shi)要按照特(te)定(ding)圖紙來事先制造好分支(zhi)線(xian)；就是(shi)一根主線(xian)芯上(shang)按著圖紙接上(shang)很(hen)多(duo)小規格的分電纜(lan)，銅扣(kou)壓緊后，應(ying)該注意的就是(shi)一定(ding)要將接頭處(chu)處(chu)理好，包緊后澆注直接用成型模具壓制。

預分支電纜 預分支電力電纜 ng-a礦物絕緣防火預分支電纜 VV預分支電纜 BTTZ礦物絕緣電纜預分支電纜

預(yu)(yu)分支(zhi)(zhi)(zhi)電(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)執行標(biao)準：主(zhu)干(gan)電(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)和支(zhi)(zhi)(zhi)線(xian)電(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)應符合GB/T3956、GB/T12706、GB/T12666以及本(ben)標(biao)準第2中的(de)(de)(de)相(xiang)關標(biao)準的(de)(de)(de)規定(ding)。1、預(yu)(yu)制(zhi)分支(zhi)(zhi)(zhi)電(dian)(dian)(dian)力電(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)導(dao)體的(de)(de)(de)最(zui)高額定(ding)溫(wen)度(du)：交(jiao)聯(lian)聚(ju)乙(yi)烯絕(jue)(jue)緣(yuan)(yuan)(yuan)為(wei)(wei)90℃聚(ju)氯(lv)乙(yi)烯絕(jue)(jue)緣(yuan)(yuan)(yuan)為(wei)(wei)70℃2、短路時(shi)(shi)(最(zui)長持續時(shi)(shi)間不(bu)超過5S)電(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)導(dao)體最(zui)高溫(wen)度(du)交(jiao)聯(lian)聚(ju)乙(yi)烯絕(jue)(jue)緣(yuan)(yuan)(yuan)為(wei)(wei)250℃聚(ju)氯(lv)乙(yi)烯絕(jue)(jue)緣(yuan)(yuan)(yuan)為(wei)(wei)160℃ 5.2.33、聚(ju)氯(lv)乙(yi)烯絕(jue)(jue)緣(yuan)(yuan)(yuan)預(yu)(yu)制(zhi)分支(zhi)(zhi)(zhi)電(dian)(dian)(dian)力電(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)敷(fu)設(she)(she)時(shi)(shi)環境(jing)溫(wen)度(du)不(bu)應于(yu)0℃，容許彎曲(qu)半(ban)徑(jing)為(wei)(wei)電(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)外徑(jing)的(de)(de)(de)30倍。4、交(jiao)聯(lian)聚(ju)乙(yi)烯絕(jue)(jue)緣(yuan)(yuan)(yuan)預(yu)(yu)制(zhi)分支(zhi)(zhi)(zhi)電(dian)(dian)(dian)力電(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)容許彎曲(qu)半(ban)徑(jing)為(wei)(wei)電(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)外徑(jing)的(de)(de)(de)30倍。5、主(zhu)干(gan)電(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)導(dao)體截面當預(yu)(yu)制(zhi)分支(zhi)(zhi)(zhi)電(dian)(dian)(dian)力電(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)垂(chui)直(zhi)敷(fu)設(she)(she)時(shi)(shi)，為(wei)(wei)了(le)保證強度(du)，主(zhu)干(gan)電(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)的(de)(de)(de)導(dao)體截面不(bu)宜小于(yu)10mm2；而水平(ping)敷(fu)設(she)(she)時(shi)(shi)主(zhu)干(gan)電(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)標(biao)稱截面可(ke)按需要(yao)選定(ding)。預(yu)(yu)制(zhi)分支(zhi)(zhi)(zhi)電(dian)(dian)(dian)力電(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)的(de)(de)(de)型(xing)號規格應根據額定(ding)負載及使(shi)用環境(jing)要(yao)求來選擇。分支(zhi)(zhi)(zhi)壓(ya)接(jie)(jie)型(xing)連(lian)接(jie)(jie)件：材質為(wei)(wei)銅(tong)或(huo)銅(tong)合金，便于(yu)壓(ya)制(zhi)連(lian)接(jie)(jie)的(de)(de)(de)“C”型(xing)結(jie)構(gou)，壓(ya)緊后不(bu)應發生(sheng)龜裂或(huo)損害銅(tong)導(dao)線(xian)。分支(zhi)(zhi)(zhi)接(jie)(jie)頭的(de)(de)(de)絕(jue)(jue)緣(yuan)(yuan)(yuan)：絕(jue)(jue)緣(yuan)(yuan)(yuan)等級不(bu)低于(yu)主(zhu)干(gan)線(xian)的(de)(de)(de)絕(jue)(jue)緣(yuan)(yuan)(yuan)等級，最(zui)薄厚(hou)度(du)不(bu)低于(yu)絕(jue)(jue)緣(yuan)(yuan)(yuan)和護套(tao)的(de)(de)(de)厚(hou)度(du)之和。