The trough type cable tray is a totally enclosed cable tray. Made by bending the entire steel plate. According to the length, it can be divided into ordinary trough cable tray and long-span trough cable tray. The general length of ordinary trough cable tray is 2m. The bottom plate and side plate of the cable tray are generally pressed by one plate. The length of long-span trough cable tray is 3m, 4m and 6m. The side plate of the cable tray is generally corrugated to enhance the safety load within the unit length. The bottom plate and side plate of the cable tray are fixed together by welding.
Common specifications and models of cable tray elbows in trough straight section include trough type 90 degree horizontal bend through cable tray, trough type 45 degree horizontal bend through cable tray, trough type horizontal tee cable tray, trough type horizontal cross cable tray, trough type vertical upward bend through cable tray, trough type vertical downward bend through cable tray, and trough type vertical tee cable tray.
According to the galvanizing process, the trough cable tray can be divided into electrogalvanized trough cable tray and hot-dip galvanized trough cable tray. The electrogalvanized trough cable tray attaches zinc ions to the surface of the bridge through metal electrodissolution technology, and the hot-dip galvanized trough cable tray generates an alloy layer on the surface of the bridge through rinsing with zinc melt. The thickness of the zinc layer in hot-dip galvanizing is much thicker than that in electric galvanizing.
The manufacturer of cable tray in Shandong reminded that the trough type cable tray is not fireproof by default. After spraying fireproof paint or fireproof powder, the surface coating of the cable tray has the characteristics of fire resistance and flame retardancy, and can also be fireproof. Galvanized trough cable tray can also be treated by spraying process. After spraying fire retardant powder, it has fire retardant performance and can be used as a fire resistant cable tray.
The plastic sprayed trough type fireproof cable tray is made by spraying thermosetting fireproof electrostatic powder to form a cable tray with fireproof and flame retardant characteristics. In a sealed environment, it can better protect cables and wires, with excellent shielding performance, preventing dust and stains in the air from polluting the cables inside the bridge. It has strong shielding signal interference ability, and is equipped with electrostatic powder spraying effect, which can prevent static electricity, rust, waterproof, and increase load capacity. After electrostatic spraying processing, the appearance of the bridge is relatively smooth, and adding different colors can greatly improve its aesthetics.
When the trough type cable tray is installed horizontally, the spacing between supports and hangers should be selected according to the load specification, and the optimal distance should not be more than 2m. The spacing between supports and hangers of trough type cable tray shall also be set according to the product performance parameters. Yellow green wire or copper braided wire shall be used at the connection of two section trough cable tray or at the movable connecting plate for connection at both ends, and the cross sectional area of the connecting wire shall not be less than 16 square millimetre. The steel trough type cable tray shall be connected with the nearest general equipotential grounding device when entering and exiting the building.
The application range of trough type cable tray is: underground garages, power transmission in factories, power transmission and transformation stations, subway stations, airports, power plants, nuclear power plants, intelligent industrial buildings, and other occasions where cables are commonly used. If you have any doubts or needs about it, please come to our website Leave a message and take a look!