Laying of cable tray
The cable tray can be laid together with the process pipeline without occupying the cable channel separately, so as to save space and avoid the problem of crossing with underground pipelines.
When the cable is laid in the air, the heat dissipation condition is better than that of the cable tunnel. There is no need for ventilation and drainage, and the operation cost is low. During the expansion and installation, the new cables can make full use of the idle position of the cable tray, which is very convenient for power consumption.
Compared with other cable laying methods, cable tray has obvious advantages. No matter the main line in the plant area or the wiring in a certain equipment, the laying method of cable tray can be adopted. Although the cost of directly buried cable is low, it covers a large area. When the installation is expanded, the cable needs to be re excavated.
The cable is often damaged due to expansion construction, resulting in power failure. It is difficult to deal with the accident and takes a long time to restore power supply. When the cable is directly buried, it is necessary to select armored cable, which is more expensive than ordinary cable and inconvenient to bend.
When the bridge is laid horizontally, its height above the ground is generally not less than 2.5m. When it is laid vertically, the part below 1.8m above the ground shall be protected by a metal cover plate, except when it is laid in a special electrical room. The bridge shall be horizontally laid in the equipment interlayer, or less than 2.5m, and protective grounding measures shall be taken.
Laying layout of cable tray
In the engineering design, the layout of the bridge shall be comprehensively compared according to the economic rationality, technical feasibility, operation safety and other factors. Determine a good scheme to fully meet the requirements of construction, installation, maintenance and cable laying.
When used in corrosive environment, the tray, trunking, supports and hangers shall be made of corrosion-resistant rigid materials. Or adopt anti-corrosion treatment. The anti-corrosion treatment method shall meet the requirements of the project, environment and durability. For places with high requirements for corrosion resistance or cleanliness, aluminum alloy cable trays shall be selected.
In areas with fire protection requirements, Shandong cable tray and cable trough can be added with fire-proof or flame-retardant plates, nets and other materials to form a closed or semi closed structure.
The surface of Shandong cable tray and its supports and hangers shall be sprayed with fireproof paint and other measures. The overall fire resistance performance shall meet the requirements of relevant national codes or standards. Aluminum alloy cable trays shall not be used in places with high fire protection requirements.
In addition, with the improvement of fire alarm products, cable detectors can be used to monitor cables. Once the temperature at a certain place is too high and exceeds the set value of the detector, the alarm can be sent in time, so that the personnel on duty can patrol in time to eliminate hidden dangers and prevent accidents. For more information about cable tray products, you can follow the website www.sddlqj Cn consultation!