阻(zu)燃(ran)密(mi)集(ji)型母(mu)線(xian)槽(cao)：銅母(mu)排(pai)上(shang)采(cai)用(yong)聚四氟乙烯(xi)薄(bo)膜纏繞3層，工頻耐(nai)壓可達3750V。母(mu)排(pai)纏繞后，密(mi)集(ji)型母(mu)線(xian)槽(cao)費用(yong)，采(cai)用(yong)進(jin)口PayChem或國產熱收縮套管作為(wei)護(hu)套，在各相母(mu)線(xian)間(jian)采(cai)用(yong)阻(zu)燃(ran)絕緣薄(bo)板隔(ge)離，氧指(zhi)數32級以上(shang)，達到(dao)母(mu)線(xian)槽(cao)的(de)電氣和阻(zu)燃(ran)性(xing)(xing)能(neng)。耐(nai)火(huo)母(mu)線(xian)槽(cao)：設(she)有特(te)殊耐(nai)火(huo)性(xing)(xing)能(neng)的(de)絕緣性(xing)(xing)能(neng)高且(qie)不燃(ran)的(de)特(te)殊的(de)環氧樹(shu)脂粉噴涂在母(mu)排(pai)上(shang)，附(fu)件為(wei)耐(nai)火(huo)的(de)絕緣件。在母(mu)線(xian)連接(jie)頭、插(cha)接(jie)箱(xiang)、母(mu)線(xian)槽(cao)殼(ke)體等部位經(jing)特(te)殊設(she)計加工，密(mi)集(ji)型母(mu)線(xian)槽(cao)，具有符(fu)合(he)耐(nai)火(huo)標(biao)準(zhun)的(de)耐(nai)火(huo)性(xing)(xing)能(neng)。

施工管理過程中，母(mu)(mu)線(xian)(xian)(xian)(xian)槽在安(an)裝(zhuang)之前(qian)和安(an)裝(zhuang)之后應對其進行(xing)絕緣(yuan)檢(jian)杳(yao)，密集(ji)型母(mu)(mu)線(xian)(xian)(xian)(xian)槽生產設(she)備(bei)，并進行(xing)比較檢(jian)杳(yao)是否由(you)于安(an)裝(zhuang)質量(liang)問題造成母(mu)(mu)線(xian)(xian)(xian)(xian)楷絕緣(yuan)降低(di)。將母(mu)(mu)線(xian)(xian)(xian)(xian)連(lian)接(jie)(jie)(jie)到電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)分箱，再(zai)由(you)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)分支(zhi)箱向每個(ge)樓層供(gong)電(dian)(dian)(dian)(dian)(dian)，把母(mu)(mu)線(xian)(xian)(xian)(xian)當插座(zuo)使(shi)用，沒(mei)有體現(xian)出(chu)母(mu)(mu)線(xian)(xian)(xian)(xian)的(de)優勢，不建(jian)議采用這(zhe)樣的(de)供(gong)電(dian)(dian)(dian)(dian)(dian)方式(shi)。一般(ban)建(jian)筑(zhu)都會為母(mu)(mu)線(xian)(xian)(xian)(xian)槽設(she)計安(an)裝(zhuang)空(kong)間(jian)(豎井)，從配電(dian)(dian)(dian)(dian)(dian)柜直接(jie)(jie)(jie)與母(mu)(mu)線(xian)(xian)(xian)(xian)連(lian)接(jie)(jie)(jie)，每個(ge)樓層均(jun)設(she)一個(ge)或多個(ge)插接(jie)(jie)(jie)開關箱，再(zai)由(you)插接(jie)(jie)(jie)開關箱向各用電(dian)(dian)(dian)(dian)(dian)設(she)備(bei)及回路以電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)、電(dian)(dian)(dian)(dian)(dian)線(xian)(xian)(xian)(xian)方式(shi)送(song)出(chu)電(dian)(dian)(dian)(dian)(dian)源。

８０年(nian)代(dai)以(yi)前，高層建(jian)筑中(zhong)的(de)供電(dian)主干(gan)線主要采用可靠性較好的(de)普通(tong)電(dian)纜(lan)(lan)，電(dian)纜(lan)(lan)在電(dian)氣豎井內沿(yan)墻壁用支架(jia)或電(dian)纜(lan)(lan)橋(qiao)架(jia)敷(fu)設(she)。電(dian)纜(lan)(lan)作為供電(dian)主干(gan)線比裸導線、裸排要得(de)多，但載流(liu)量(liang)(liang)受到(dao)限(xian)制(zhi)，電(dian)纜(lan)(lan)截面不可能造(zao)得(de)很大(da)（大(da)只能做到(dao)４００ｍｍ２），而且電(dian)纜(lan)(lan)太粗，現場施工難(nan)度大(da)。８０年(nian)代(dai)中(zhong)后期，城(cheng)市(shi)發展迅(xun)速，高層、超高層建(jian)筑大(da)批建(jian)造(zao)，建(jian)筑物的(de)用電(dian)負荷急劇(ju)增加，密(mi)集型母(mu)線槽廠家價格(ge)，電(dian)纜(lan)(lan)作為供電(dian)主干(gan)線的(de)局(ju)限(xian)性越來越突出(chu)，特別是現場制(zhi)作電(dian)纜(lan)(lan)分支接頭技術(shu)難(nan)度很大(da)，急需一種容(rong)(rong)量(liang)(liang)大(da)、分支方便的(de)供電(dian)主干(gan)線取(qu)而代(dai)之。這(zhe)時，容(rong)(rong)量(liang)(liang)大(da)、分支方便的(de)母(mu)線槽從(cong)國外(wai)引進來，并且在工程中(zhong)迅(xun)速得(de)到(dao)推廣(guang)應用。