As we all know, cable tray is a kind of cable laying device which can make the laying of wire, cable and pipe reach standardization, serialization and generalization. So, today, let's talk about how to choose cable tray.
1、 Selection of cable tray type and variety
1. It is used for cable network which needs to shield electrical interference, or when it is required to protect from external influence (such as corrosive liquid, flammable dust, etc.). (FB) trough type composite anti-corrosion shielding cable tray (with cover) shall be selected.
2. For strong corrosive environment (f) type composite epoxy resin anticorrosive flame retardant cable tray. Support arms and supports shall be of the same material to improve the service life of the bridge and accessory cable bridge frames. Cover plate should be added in the environment or outdoor places that are easy to accumulate dust and need to be covered.
3. In addition to the above situation, tray type, trough type, step type, glass anti-corrosion and flame retardant cable bridge frame or steel ordinary bridge can be selected according to the site environment and technical requirements. Cover plate should be added in the environment or outdoor places that are easy to accumulate dust and need to be covered.
4. In the public passage or outdoor cross section, the bottom of the bottom step should be added with a pad or pallet should be used in this section. When the large span spans the public passage, the bearing capacity of the bridge can be improved or the trestle can be selected according to the user's requirements.
5. Composite bridge (FB) should be selected for long span (> 3M).
6. Composite epoxy resin tree bridge (f) is selected for outdoor use.
2、 Specification selection
1. The width and height of the bridge shall be selected according to the table below, and shall meet the requirements of relevant standards and specifications. 40-50% for power cable and 50-70% for control cable. In addition, 10-25% process development allowance is required.
2. The specifications of various bending and accessories shall meet the engineering layout conditions and match with the bridge.
3. The specifications of supports and hangers shall be selected according to the specifications, layers, span and other conditions of the bridge. And it should meet the requirements of load.
The above is about how to choose some content of cable tray, hope to give you some help. Of course, in addition to knowing how to select the cable bridge rack, the installation of the cable bridge rack is also very important. If you want to know more about cable rack, you can pay attention to the updated information on our website.