The cable tray must be used in many projects. If we do not know what problems need to be paid attention to in the installation of the cable tray, the cable tray will be seriously damaged by the environmental impact after installation, and the whole line will be damaged.

首先我们需要了解电缆桥架的安装需要对环境条件进行综合分析 ，一般情况下我们将环境条件划分为三种，分别是正常环境、特殊环境、以及腐蚀环境，不同的环境对电缆桥架的安装要求也不尽相同。

First of all, we need to understand that the installation of cable tray requires a comprehensive analysis of the environmental conditions. Generally, we divide the environmental conditions into three types: normal environment, special environment and corrosive environment. Different environments have different requirements for the installation of cable tray.

其次，电缆桥架的安装要注意确定电缆桥架的走向，电缆桥架的安装确定时应该以多数电缆的走向为依据，在室外环境中走向可以沿着工艺管道，而在室内的时候沿着梁，柱，墙等均可。

Secondly, the direction of cable tray shall be determined during the installation of cable tray. The installation of cable tray shall be based on the direction of most cables. The direction can be along the process pipeline in outdoor environment and along the beam, column and wall in indoor environment.

后，电缆桥架的安装要注意荷重的计算，计算时需要的数据是处于断面上的电缆单位长度上的重量以及桥架的总荷载量的。后的后也是重要的一点，电缆桥架的安装需要综合前三点的条件来进行桥架的类型和规格的确定，选择时需要考虑的参数有立柱的长度以及间距，桥架的层次，托臂的长度等。施工环境当中需要防火要求时，可以选择相应的防火电缆桥架，防火电缆桥架的整体防火性能要求需要符合有光规范或标准的要求。这就是对环境条件进行的综合分析。

Finally, the installation of cable tray should pay attention to the calculation of load. The data required in the calculation are the weight per unit length of cable on the section and the total load of cable tray. The last and most important point is that the installation of cable tray needs to integrate the conditions of the first three points to determine the type and specification of cable tray. The parameters to be considered in the selection include the length and spacing of columns, the level of cable tray, the length of bracket, etc. When fire protection requirements are required in the construction environment, corresponding fire-proof cable tray can be selected. The overall fire performance requirements of fire-proof cable tray shall meet the requirements of national lighting codes or standards. This is a comprehensive analysis of environmental conditions.

选择电缆桥架的负载等级时，桥架的平均工作负载不应大于所选电缆桥架的额定平均工作负载。电缆桥架支吊架实际跨度不等于2m时，平均工作荷载应满足要求。

When selecting the load grade of cable tray, the average working load of cable tray shall not be greater than the rated average working load of the selected cable tray. When the actual span of cable tray supports and hangers is not equal to 2m, the average working load shall meet the requirements.

当电缆桥架安装好后，在需要接通接地主回路时，应该要满足这些需求。在电缆桥架的两端处连接的电阻不要大于0.00004欧姆，接地孔需要把绝缘层去电。切断电源时，电缆桥架尺寸方向的截面面积不应小于规定值。

After the cable tray is installed, these requirements should be met when the grounding circuit needs to be connected. The resistance connected at both ends of the cable tray shall not be greater than 0.00004 ohm, and the insulating layer shall be de energized at the grounding hole. When cutting off the power supply, the cross-sectional area in the dimension direction of the cable tray shall not be less than the specified value.

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The above is about Shandong cable tray //www.comprepyme.com If you have any questions, please call and someone will answer for you.