Large span cable tray can not only be used for indoor and outdoor cable overhead of oil refining, chemical industry, textile, machinery, metallurgy, electric power, television, radio and other industrial and mining enterprises, but also can be used for underground engineering such as cable trench and cable tunnel inner support of subway and civil air defense engineering. Let's understand the design requirements and selection standards of large span cable tray.

1、 Design requirements of long span cable tray

1. If it is necessary to block the cable network of electrical intervention or to protect the external (such as corrosive liquid, flammable dust and other environment) influence of long-span cable tray, the (FB) slot composite anti-corrosion shielding long-span cable tray (including cover) shall be used.

2. (f) type composite epoxy resin anti-corrosion and flame-retardant long-span cable tray should be selected for corrosive environment. The base and bracket should also use the same material to improve the service life of tray and accessories. Cover easily accumulated ashes and other sheltered environment or field places.

3. According to the site environment and technical requirements, pallets, slots, stairs, glass anti-corrosion flame retardant long span cable tray or steel general pallets can be selected.

4. In the public passage or outdoor cross road section, the bottom of the lower stairs should be put into the backing plate or use tray for this section. When the long span cable tray meets the public channel, the load capacity of the tray can be increased or the support can be selected according to the customer's requirements.

2、 Selection of Large Span cable tray Specifications

1. The width and height of the long span cable tray should be selected according to the specific situation. The filling rate of the cable should not exceed the specified value of the standard specification. 40-50% of the power line, 50-70% of the control cable and 10-25% of the program development space should be reserved.

2. All kinds of elbow and accessory models need to be arranged according to the engineering situation and consistent with the pallet.

The design requirements and selection criteria of long-span cable tray are introduced here, hoping to bring some help to you. Then, if there is a demand, you can find a professional manufacturer to purchase.