The cable tray is heavy-duty, easy to install, dismantle, maintain and has strong environmental adaptability. It can be installed on the bright side or on the dark side. The bridge is composed of excellent cold and hot rolled sheet, steel, stainless steel, FRP, PVC, aluminum alloy, etc. Surface treatment includes painting, galvanizing, hot dip galvanizing, glue spraying, etc. Bridge is divided into grid bridge, trough bridge, tray bridge, cascade bridge, combined bridge, long-span bridge, etc.

橋架常用的有下面幾種：槽式橋架，托盤式橋架，梯級式橋架，網(wǎng)格橋架和大跨距橋架。而大跨距橋架又分為槽式、梯級式及托盤式。

Bridge commonly used are the following: trough type bridge, tray type bridge, ladder type bridge, grid bridge and long span bridge. The long span bridge is divided into trough type, step type and tray type.

母線槽：安裝方便，易于拆卸，維護(hù)方便，環(huán)境適應(yīng)性強(qiáng)。優(yōu)點是明顯的，也有不可避免的缺點，接觸表面容易腐蝕。但北部地區(qū)出現(xiàn)這些問題的可能性很小，因為北方的潮濕程度比南方低。

Bus duct: easy to install, easy to disassemble, easy to maintain, strong environmental adaptability. The advantages are obvious, but there are also inevitable disadvantages. The contact surface is easy to corrode. But these problems are less likely in the north, where humidity is lower than in the south.
            

母線槽連接導(dǎo)線連接到電氣設(shè)備上的電路。它是收集和分配電力的載體，也稱為匯流母線槽。按照慣例，將每個分配單元中的當(dāng)前分支電路的導(dǎo)體稱為總線槽。母線的功能是裝配、分配和傳輸電力。母線槽在運行中，有巨大的能量通過，短路，在大量的熱電效應(yīng)下，必須按照和經(jīng)濟(jì)運行的要求，對材料的合理選擇、截面形狀和截面面積進(jìn)行合理的選擇。

A circuit in which bus duct connecting wires are connected to electrical equipment. It is the carrier of collecting and distributing power, also known as bus duct. According to convention, the conductor of current branch circuit in each distribution unit is called bus slot. The function of bus is to assemble, distribute and transmit power. In the operation of bus duct, there is a huge amount of energy passing through and short circuit. Under a large number of thermoelectric effects, the reasonable selection of material, section shape and section area must be carried out according to the requirements of safe and economic operation.

母線槽的常用類型，有硬母線槽、軟母線槽兩種。硬母線槽用銅或鋁做成，形狀有矩形、槽形和管形數(shù)種，多用于35 kV及以下的屋內(nèi)配電裝置，110 kv～220 kv屋外配電裝置有時也采用鋁管母線槽。

There are two common types of bus duct: hard bus duct and soft bus duct. The rigid bus duct is made of copper or aluminum, with rectangular, trough and tube shapes. It is mostly used for indoor power distribution devices of 35 kV and below, and aluminum tube bus duct is sometimes used for outdoor power distribution devices of 110 kV ~ 220 kV.

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