高(gao)壓共箱母線(xian)(xian)具(ju)有出色(se)的(de)短路電阻(zu)。由于采用(yong)(yong)鋁（或弱磁性(xing)鋼板(ban)）外殼的(de)保護，可以有效(xiao)減少(shao)(shao)由渦流或循環(huan)電流引(yin)起(qi)的(de)結(jie)構發熱，降低(di)封(feng)閉的(de)母線(xian)(xian)殼的(de)溫度，并(bing)減少(shao)(shao)功率損(sun)耗(hao)，提(ti)高(gao)載流能(neng)力(li)和減少(shao)(shao)電力(li)。該(gai)系列(lie)母線(xian)(xian)槽具(ju)有的(de)結(jie)構，并(bing)且可以在(zai)母線(xian)(xian)的(de)上(shang)部(bu)或下(xia)部(bu)任意設置設備維護孔(kong)。對于大電流室內封(feng)閉母線(xian)(xian)，在(zai)通風柜的(de)兩側和下(xia)部(bu)都設置了(le)通風百葉窗，宣威共箱母線(xian)(xian)槽，以增強散熱效(xiao)果并(bing)降低(di)溫度升高(gao)。通過采用(yong)(yong)外殼的(de)兩層(ceng)絕緣和多點連接接地，明(ming)顯(xian)減少(shao)(shao)了(le)維護工作量(liang)，并(bing)明(ming)顯(xian)提(ti)高(gao)了(le)安全功能(neng)。

 母(mu)(mu)(mu)(mu)線(xian)(xian)(xian)(xian)(xian)槽(cao)常用(yong)(yong)在(zai)高層建筑的交流供(gong)電(dian)(dian)系統(tong)中(zhong)，母(mu)(mu)(mu)(mu)線(xian)(xian)(xian)(xian)(xian)槽(cao)是由(you)金屬(shu)板(ban)（鋼板(ban)或鋁(lv)鎂合金板(ban)）為(wei)保護(hu)外殼、導電(dian)(dian)排(pai)、絕緣材(cai)料及(ji)有關(guan)附件組成(cheng)的母(mu)(mu)(mu)(mu)線(xian)(xian)(xian)(xian)(xian)系統(tong)。母(mu)(mu)(mu)(mu)線(xian)(xian)(xian)(xian)(xian)槽(cao)按絕緣方式(shi)(shi)可(ke)分為(wei)空氣式(shi)(shi)母(mu)(mu)(mu)(mu)線(xian)(xian)(xian)(xian)(xian)槽(cao)、密集絕緣母(mu)(mu)(mu)(mu)線(xian)(xian)(xian)(xian)(xian)槽(cao)和高強(qiang)度母(mu)(mu)(mu)(mu)線(xian)(xian)(xian)(xian)(xian)槽(cao)三種。        通過分析母(mu)(mu)(mu)(mu)線(xian)(xian)(xian)(xian)(xian)槽(cao)在(zai)交流系統(tong)中(zhong)的成(cheng)功(gong)應用(yong)(yong)案例，共(gong)箱母(mu)(mu)(mu)(mu)線(xian)(xian)(xian)(xian)(xian)槽(cao)報價，運營商在(zai)直流供(gong)電(dian)(dian)系統(tong)中(zhong)選(xuan)用(yong)(yong)密集型(xing)絕緣母(mu)(mu)(mu)(mu)線(xian)(xian)(xian)(xian)(xian)槽(cao)作為(wei)電(dian)(dian)能的傳(chuan)輸(shu)介質，可(ke)以將電(dian)(dian)能、安全地(di)輸(shu)送到(dao)負載側。

母(mu)(mu)線(xian)(xian)完全(quan)差動(dong)保護(hu)是(shi)將母(mu)(mu)線(xian)(xian)上(shang)所有(you)的(de)各連接元(yuan)件的(de)電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)互(hu)感(gan)器(qi)(qi)按同名相、同極性(xing)連接到差動(dong)回路，共箱母(mu)(mu)線(xian)(xian)槽供(gong)應，電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)互(hu)感(gan)器(qi)(qi)的(de)特性(xing)與變比(bi)均應相同，若變比(bi)不能(neng)相同時(shi)，共箱母(mu)(mu)線(xian)(xian)槽公司，可采用補償變流(liu)(liu)(liu)(liu)器(qi)(qi)進(jin)行補償，滿足ΣI=0。差動(dong)繼電(dian)(dian)(dian)(dian)器(qi)(qi)的(de)動(dong)作電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)按下(xia)述條件計算、整定，取其值：1)、躲開外部短路時(shi)產生的(de)不平(ping)衡(heng)電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)；2)、躲開母(mu)(mu)線(xian)(xian)連接元(yuan)件中(zhong)，負荷支路的(de)負荷電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)，以(yi)防止電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)二次(ci)回路斷線(xian)(xian)時(shi)誤動(dong)。母(mu)(mu)線(xian)(xian)不完全(quan)差動(dong)保護(hu)只(zhi)需將連接于母(mu)(mu)線(xian)(xian)的(de)各有(you)電(dian)(dian)(dian)(dian)源(yuan)元(yuan)件上(shang)的(de)電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)互(hu)感(gan)器(qi)(qi)，接入(ru)差動(dong)回路，在無電(dian)(dian)(dian)(dian)源(yuan)元(yuan)件上(shang)的(de)電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)互(hu)感(gan)器(qi)(qi)不接入(ru)差動(dong)回路。因此在無電(dian)(dian)(dian)(dian)源(yuan)元(yuan)件上(shang)發生故(gu)障，它將動(dong)作。電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)互(hu)感(gan)器(qi)(qi)不接入(ru)差動(dong)回路的(de)無電(dian)(dian)(dian)(dian)源(yuan)元(yuan)件是(shi)電(dian)(dian)(dian)(dian)抗(kang)器(qi)(qi)或(huo)變壓器(qi)(qi)。