Jun 28 , 2024

Cable tray calculation formula

In a computer room project, compared with expensive, high-tech hardware and software, the cable tray is inconspicuous and rarely paid attention to, but it is also an indispensable part of the entire wiring project. The design and selection process should reasonably select the appropriate cable tray based on the type and quantity of cables in each system. 一 Selection of cable tray types and varieties 1) When shielding electrical interference cable networks or protecting against external influences (such as corrosive liquids, flammable dust, etc.), (FB) type trough composite anti-corrosion shielded cable tray (with cover) should be selected. 2) For highly corrosive environments, (F) type composite epoxy resin anti-corrosion flame retardant cable trays should be used. The same materials should also be used for the brackets and supports to increase the service life of the cable tray and accessories. In environments where dust is easily accumulated and other areas that need to be covered or outdoor places, a cover plate should be added. 3) In addition to the above situations, tray-type, trough-type, ladder-type, glass anti-corrosion flame retardant cable trays or steel ordinary cable trays can be selected according to the site environment and technical requirements. In environments where dust is easily...

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May 28 , 2024

Cable tray is a bracket that supports and places cables.

Cable tray is commonly used in engineering projects. They are used whenever cables are laid. Cable trays are divided into trough-type cable trays, tray-type cable trays, stepped cable trays, grid bridges and other structures; they are composed of brackets, brackets and installation accessories. As a supporting project for wiring projects, there is currently no specific specification guidance for cable trays. Each manufacturer’s specification program lacks versatility. Therefore, the design and selection process should be reasonably selected based on the type and quantity of cables in each weak current system. Suitable bridge. It can be erected independently or laid on various buildings (structures) and pipe gallery brackets. It has the characteristics of simple structure, beautiful appearance, flexible configuration and convenient maintenance. All parts need to be galvanized and installed on the building. If the open-air bridge is located near the seaside or in a corrosive area, the material must have the physical properties of anti-corrosion, moisture resistance, good adhesion, and high impact resistance.

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Mar 28 , 2024

What are the cable tray installation requirements that need to be paid attention to?

Cable tray is an important equipment used for cable laying and support. Its installation requirements are key to ensuring the normal operation of the cable system. Here are some requirements for cable tray installation: 1. Safety: Safety must be given priority when installing cable trays. During the installation process, attention should be paid to the safety of workers, use appropriate safety equipment and personal protective equipment, and follow relevant safety operating procedures. In addition, the installation location of the bridge should be away from flammable, explosive and other dangerous places. 2. Laying planning: Before installing the cable tray, electrical planning and design should be carried out to determine the laying path and length of each section of cable. Choose the appropriate bridge model and size according to different needs and environmental conditions. 3. Determine the support method: There are many options for the support method of the bridge, including hoisting, suspension, wall hanging and ground installation. According to the actual situation and requirements, select the appropriate support method and ensure that the support points are evenly spaced, strong and reliable. 4. Installation specifications: During the installation process, the relevant installation specifications should be followed. According to the model and size...

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Jan 19 , 2024

Classification of cable trays

1. Cable ladder The CQ1-T type stepped cable tray is improved and designed based on relevant domestic and foreign data. It has the advantages of light weight, low cost, unique shape, easy installation, heat dissipation, and good ventilation. It is suitable for the laying of generally larger diameter cables and suitable for the laying of high and low voltage power cables. 2. Tray type cable tray Tray type cable tray is the most widely used in petroleum, chemical industry, light industry, telecommunications and other fields. It has the advantages of light weight, large load, beautiful appearance, simple structure and easy installation. It is suitable for both the installation of power cables and the laying of control cables. 3. Trough type cable tray The trough cable tray is a fully enclosed cable tray. It is most suitable for laying computer cables, communication cables, thermocouple cables and other control cables for highly sensitive systems. It has a good effect on shielding interference of control cables and protecting cables in heavy corrosion environments. The ladder type, tray type and trough type cable trays have their own advantages and disadvantages: the ladder type cable tray has good ventilation performance, but is not dustproof or...

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Nov 20 , 2023

The cable tray can be divided into grid type, ladder type, tray type and trough type according to its shape.

The bridge frame in the building can be erected independently or attached to various buildings (structures) and pipe gallery supports. It should reflect the characteristics of simple structure, beautiful appearance, flexible configuration and convenient maintenance.

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Nov 11 , 2023

Expansion and contraction problem

Due to changes in ambient temperature, the steel cable tray will expand and contract with heat. The outdoor bridge is greatly affected by temperature.

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