20世紀(jì)90年代以前低壓配電系統(tǒng)中一直由電纜擔(dān)負(fù)著輸配電的重要角色。但90年代以來(lái)，母線槽系統(tǒng)逐漸被引進(jìn)和開(kāi)發(fā)，并迅速在建筑工程中得到廣泛應(yīng)用。它與傳統(tǒng)輸電器材相比有著其獨(dú)特的性能優(yōu)勢(shì)，比如載流量大、過(guò)載能力強(qiáng)、分接方便、散熱性好以及維護(hù)方便等。

Before the 1990s, cables played an important role in the low-voltage distribution system. But since the 1990s, the busbar slot system has been gradually introduced and developed, and has quickly been widely used in construction engineering. Compared with traditional transmission equipment, it has its unique performance advantages, such as large carrying capacity, strong overload capacity, convenient separation, good heat dissipation and convenient maintenance.

母線槽供電系統(tǒng)通常是主干線從配電中心引出以散射狀靈活供電，而電纜供電則受分接難度大、載流量小、難以分散控制等因素限制，通常是"點(diǎn)對(duì)點(diǎn)"供電，特別是在高層建筑供電系統(tǒng)中，母線槽相比電纜的優(yōu)越性尤為突出。傳統(tǒng)電纜供電方式，每個(gè)樓層都需要單獨(dú)放線，電纜根數(shù)眾多。這樣的密集敷設(shè)方式，散熱性差、占用空間大、事故檢查難、維修難度大。而母線槽供電只要使用單一的中心母線槽系統(tǒng)，在每個(gè)樓層設(shè)置相應(yīng)容量的插接箱進(jìn)行分流，即可達(dá)到供電目的。這種方式使得分接異常靈活，而且每個(gè)分支都有插接箱對(duì)分流變?nèi)萏幍谋Ｗo(hù)。因此，采用母線槽更加安全、更加簡(jiǎn)單、更加可靠。

The bus trough power supply system is usually the main line from the distribution center to scattered flexible power supply, while the cable power supply is limited by factors such as difficult separation, small load capacity, and difficult dispersion control. It is usually "point to point" power supply, especially in the power supply system of high-rise buildings, the superiority of the bus trough is particularly prominent compared with the cable. Traditional cable power supply mode, each floor needs to set out separately, the number of cables. Such a intensive laying method, poor heat dissipation, large space, difficult accident inspection, difficult maintenance. As long as the single central bus slot power supply system is used, and the corresponding capacity plug box is set in each floor for distribution, the power supply purpose can be achieved. This way makes the split extremely flexible, and each branch has the plug box to protect the shunt transformer. Therefore, using the bus groove is safer, simpler and more reliable.

母線節(jié)約空間，而電纜需要很大的空間。母線槽可在離設(shè)備最近的位置進(jìn)行控制，而電纜必須在配電室控制。母線配有標(biāo)準(zhǔn)的安裝支架，無(wú)需其他支撐；電纜必須用單獨(dú)的橋架或管道進(jìn)行敷設(shè)。母線槽壽命可達(dá)50年，并可重復(fù)使用。而電纜較短，不可以重復(fù)使用。母線槽的分接口可增加分接回路，而電纜必須在配電室開(kāi)始敷設(shè)。安裝母線的保險(xiǎn)費(fèi)用比較低，而電纜相對(duì)較高。

The bus bar saves space, while the cable needs a lot of space. The bus groove can be controlled in the position nearest to the equipment, while the cable must be controlled in the distribution room. The bus is provided with standard mounting supports without additional support; cables must be laid with separate bridges or piping. The bus groove can last up to 50 years and is reusable. The cable is short and can not be reused. The branch interface of the bus groove can increase the tap loop, and the cable must be laid in the distribution room. The insurance cost of installing the bus is lower, while the cable is relatively high.