Outdoor metal cable trunking refer to cable trays installed outdoors. Outdoor metal cable trunking generally use closed trough cable tray instead of open ladder cable trays. The trough cable trays must undergo a series of process treatments before they can be used outdoors. The outdoor trough cable tray has four characteristics: windproof, anti-seepage, anti-water, and anti-corrosion. For more details, please refer to the following:
1. How to protect the trough Outdoor metal cable trunking from wind
When the trough cable tray is installed outdoors, it often encounters strong winds. In order to prevent the cover plate from being blown off or displaced by the strong wind from the trough body, a padlock must be welded on the trough body, and a lock must be included on the cover plate. Tight fastening is achieved by padlocks and catches overlapping each other.
2.How to prevent water seepage of the trough outdoor metal cable trunking When the trough cable tray is used outdoors, it often encounters rainy and snowy weather. Although the connection between the two trough cable trays is tightly connected by the connecting plate, the gap at the joint can still allow rainwater to seep in. In order to ensure the water seepage of the trough cable tray After soaking the cables, it is necessary to increase the length of the trough cable tray cover to cover the gap between the two trough cable trays to prevent rain and snow from seeping in.
3. How to prevent water accumulation in the trough type cable tray outdoors
According to the standard of the cable tray, the flatness deviation of the cable tray plane should not be greater than 5mm per square meter. This 5mm deviation is already uneven for water molecules. In order to prevent rainwater from accumulating on the surface of the cable tray cover for a long time and causing corrosion to the cover, it is necessary to perform ridge treatment on the cover of the trough cable tray. A ridge is arched in the middle, and when it rains, the rainwater will naturally slide down along the slopes on both sides instead of accumulating on the cover plate.
4.How to prevent corrosion of the trough outdoors metal cable trunking.
The trough cable tray will suffer from various corrosive gases and ultraviolet radiation outdoors. If it is not treated for a long time, it will be spotted and rusted, which will affect the service life of the cable tray. Therefore, outdoor trough cable trays generally need to be hot-dipped With galvanized treatment, three layers will be added to the surface of the cable tray material, including alloy layer, galvanized layer and passivation film layer.
