Professional Cable Tray Manufacturer

Shandong Hongfeng Electric Group Co., Ltd.

The products can be widely used in construction, energy, power, plant.

What is the latest national standard specification for cable tray? introduction to load knowledge and ventilation hole of cable tray

Release time:

2023-12-05

For more details, please refer to the following: 1. The minimum distance between the multilayer cable trays of the cable tray laying control cable shall not be less

There are many national standards for cable tray, such as "JB/T 10216-2013 cable tray for electronically controlled distribution" abbreviated as 2013 standard, "T/CECS 31-2017 steel cable tray engineering technical specification standard" referred to as 2017 standard.
The safety load of the bridge is related to the span of the bridge support and hanger, the bridge material, the bridge height and the bridge thickness. The ventilation hole refers to the perforation at the bottom of the tray bridge.
For more details, please refer to the following: 1. The minimum distance between the multilayer cable trays of the cable tray laying control cable shall not be less than 200mm, and the distance between the multilayer cable trays of laying 10kv and the following power cables (except XLPE insulated cables) shall not be less than 250mm.
Cable tray is the full name of a rigid structure system with supporting cables, which is composed of straight segments, bends, accessories and hangers of cable trays or cable ladders.
2. The national standards for cable tray include "JB/T 10216-2000 cable tray for electronically controlled distribution" (abbreviated as 2000 national standard) and "JB/T 10216-2013 cable tray for electronically controlled distribution" (abbreviated as 2013 national standard).
In the 2000 national standard, the name of the structural feature of the assembled bridge is the assembled tray, and the code is Z.
In the 2000 national standard, the name of the structural feature of long-span trough bridge is bilateral unperforated pallet, code-named DC.
3. The thickness of the bridge shall be in accordance with the standard of 2013 bridge, the width of the tray and ladder shall be greater than 500mm and less than or equal to 800mm, if it is steel, the thickness of the bridge shall be 2.0mm, if it is aluminum alloy, the thickness of the bridge shall be at least 2.2mm, if it is made of fiberglass, the minimum thickness of the bridge shall be 4.5mm.
According to the 2013 bridge standard, the thickness of galvanizing is greater than or equal to 12um, the thickness of hot-dip galvanizing is greater than or equal to 65um, and the thickness of fireproof coating is greater than or equal to 60um.VCI bimetallic coating thickness is required to be greater than or equal to 8um.
4. Bridge load when the cable tray is installed horizontally, the distance between supports and hangers should be selected according to the load specification, and the best distance should not be more than 2 meters.
The distance between the cable bridge support and the hanger should also be set with reference to the description of its product performance parameters.
Considering the safety load, the cable tray is generally prohibited as a pedestrian passage or station platform to avoid safety accidents. If the cable tray must be used as the above device, relevant reinforcement measures must be adopted to ensure it.
5. According to the structural type, the cable tray can be divided into slot type, tray type, ladder type, net format, assembly type and so on.
Among them, the trough type is the non-hole tray, which is airtight and has no ventilation hole.
Pallet type belongs to perforated pallet.
The area of the vents at the bottom of the perforated tray cable tray should not exceed 40% of the total area of the bottom.
The contact width between the cable tray rung and the cable should be > = 25mm.

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What are the contents of the national standard definition of cable tray? the bending radius and span of cable tray are commonly used.

What is the use of cable tray telescopic sheet, and the thickness standard of cable tray telescopic sheet