Discussion on electrical tray issues

They should be common in marine and mining areas. The trough-type cable tray is a fully enclosed type of cable tray, which is most suitable for laying computer cables, communication cables, thermocouple cables, and control cables for other highly sensitive systems. It provides effective protection against interference for control cables as well as shielding for cables in highly corrosive environments. 1. In cable networks where electrical interference needs to be shielded, or when protection is required against external influences such as corrosive substances or flammable dusts, trough-type composite anti-corrosion shielded cable trays (with covers) should be used. 2. In highly corrosive environments, (F) type composite epoxy resin anti-corrosion and flame-retardant cable trays should be employed. The armrests and brackets should also be made of the same material to extend the service life of the cable tray and its accessories. Cable trays in environments where dust tends to accumulate or in other areas that require coverage, as well as in outdoor locations, should be fitted with covers. 3. Apart from the situations mentioned above, tray-type, trough-type, stepped-type, glass anti-corrosion flame-retardant cable trays, or ordinary steel cable trays can be selected based on the on-site environment and technical requirements. In environments prone to dust accumulation and other areas that require covering, as well as outdoor locations, it is advisable to install covers. 4. In public passages or outdoor road crossings, pads should be placed under the bottom steps, or trays should be used in such sections. When spanning public passages over large distances, the load capacity of the bridge structure can be increased as per the user’s requirements, or a truss structure can be used. 5. For large spans (>3m), composite cable trays should be used. 6. Composite epoxy tree-type cable trays should be used outdoors.