How to choose the trough type cable tray?

The trough cable tray and its supports and hangers are actually used in a corrosive environment, and should be made of corrosion-resistant rigid materials, or anti-corrosion treatment, and the anti-corrosion treatment method should meet the requirements of the engineering environment and durability. In the section with fire protection requirements, the cable tray can be composed of fire-resistant or flame-retardant plates, nets and other materials or semi-structures in the cable ladder frame and tray.

Measures such as painting fire-resistant coatings on the surface of the bridge frame and its supports and hangers shall be taken, and its overall fire-resistant performance shall meet the requirements of relevant national standards or specifications. In places with high fire protection requirements, aluminum alloy cable trays should not be used. The selection of the width and height of the trough cable tray should meet the requirements of the filling rate.

Under normal circumstances, the filling rate of the cable ladder frame and tray is 40%~50% for power cables, 50%~70% for control cables, and 10%~25% should be reserved for project development. When selecting the load level of the cable tray, the working uniform load of the cable tray should not be greater than the rated uniform load of the selected cable tray load level.

If the actual span of the support and hanger of the cable tray is not equal to 2m, the uniform load of the work should meet the requirements. The specifications and dimensions of various components and supports and hangers should match the straight section and bend series of pallets and ladder frames under the condition of satisfying the corresponding load.