The common problems and solutions in the use of cable trays can be summarized as follows:
Frequently Asked Questions
Deformation problem: When the length of the straight section of the cable tray is too long and there is a lack of compensation measures, it is prone to deformation due to temperature effects. For example, when the temperature is high, the expansion of a building may exceed the expansion of the cable tray, causing deformation of the tray and reducing the performance of the cable line.
Cross grounding issue: The cross grounding wire is thin and has a cross-sectional area smaller than the required 4mm ²; The galvanized cable tray is not equipped with anti loosening nuts or washers at both ends of the connecting plate; The grounding wire is directly welded to the cable tray, causing the protective layer of the tray to fall off and increasing the risk of corrosion.
Too close to other pipelines: The safe distance between cable trays and pipelines is small, making them susceptible to the influence of other pipelines, such as water pipe leaks or thermal damage to cables.
Installation does not comply with specifications: The jumper wires between the bridge frames are not connected correctly and are not connected at both ends of the connecting piece; The cable laying inside the bridge is chaotic and not tied up; Fire sealing does not meet the requirements; There is no compensation device for the bridge crossing the deformation joint.
Common problems and solutions in the use of cable trays?
solution
Optimize design and installation: Based on the design drawings and their instructions, gain a deep understanding of the pipeline routing and bridge installation process. Reasonably set up expansion joints and compensation devices to ensure that the bridge is not easily deformed during temperature changes.
Strengthen the grounding wire setting: Use grounding wires with a cross-sectional area greater than 4mm ² to ensure the quality of the grounding wire. The cross grounding line should be grounded, and the grounding main line should be fixed on the bracket and hanger of the bridge.
Maintain a safe distance: Ensure that there is sufficient safety distance between cable trays and other pipelines to reduce mutual influence.
Standardized installation operation: Strictly follow the requirements of the specifications for bridge installation, ensure correct connection of jumper wires, neat and straight cable laying, and meet the requirements for fireproof sealing.
Strengthen maintenance and inspection: Regularly inspect cable trays and promptly repair any problems found. Pay attention to cleaning the equipment, keep the parts clean, and apply lubricating oil to the gears to ensure normal operation.
Through the above measures, common problems in the use of cable trays can be effectively solved, ensuring their safe and stable operation.