Email:flower@czqb.com Changzhou Qiaobang Storage Equipment Co.,Ltd

Changzhou Qiaobang Storage Equipment Co.,Ltd

Design of cable tray

Design of cable tray

Cable tray plays a role as a supporting project of wiring engineering, at present ,there is no specific standard guidance. The specification procedure of manufacturer is not universal. Therefore, the design and selection process should be selected according to the types and quantities of cables in weak current system.

First: Selection of cable tray

1. Confirm direction: according to the layout of the building plan, combined with the air conditioning pipeline and electrical pipeline settings, convenient maintenance, and cable routing density to determine the best routing of cable bridge. In the indoor area, it is possible to erect walls, columns, beams and floors as far as possible, so that when the utility tunnel is erected, it should be erected parallel to one side or the top side of the pipeline. The crossing line and branch line should be considered as far as possible to avoid crossing. If there is no other pipe rack to borrow, it is necessary to set up a self supporting column.

2. Load calculation: calculate the weight of the unit length of cable on the longitudinal section of the main trunk line of the cable tray

3, Determine the way of installation: according to the setting conditions of the location, determine the fixed way of the tray, choose suspended, vertical, side wall or mixed type, connecting piece and fastener are generally supplied. In addition, select the corresponding cover according to the structure of the bridge.

4, Determine the width of the tray cable laying: according to the number and diameter of the cable and cable spacing to determine the type and size of the cable tray, arm length, strut length, spacing, bridge width and number.

Second, weak cable and other low voltage cable in cable tray, should strictly implement the selection system with weak external shielding layer of the cable is weak, to avoid mutual interference.

Third,If the power cable tray is used together, the direct side of the power cable and the weak electric cable should be separated in the middle with the partition board


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