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.

桥架常用的有下面几种：槽式桥架，托盘式桥架，江南APP官方入口官网 ，网格桥架和江南体育移动端app官网 。而江南体育移动端app官网 又分为槽式、梯级式及托盘式。

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.

母线槽：安装方便，易于拆卸，维护方便，环境适应性强。优点是明显的，也有不可避免的缺点，接触表面容易腐蚀。但北部地区出现这些问题的可能性很小，因为北方的潮湿程度比南方低。

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.

母线槽连接导线连接到电气设备上的电路。它是收集和分配电力的载体，也称为汇流母线槽。按照惯例，将每个分配单元中的当前分支电路的导体称为总线槽。母线的功能是装配、分配和传输电力。母线槽在运行中，有巨大的能量通过，短路，在大量的热电效应下，必须按照安全和经济运行的要求，对材料的合理选择、截面形状和截面面积进行合理的选择。

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.

母线槽的常用类型，有硬母线槽、软母线槽两种。硬母线槽用铜或铝做成，形状有矩形、槽形和管形数种，多用于35 kV及以下的屋内配电装置，110 kv～220 kv屋外配电装置有时也采用铝管母线槽。

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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