Cable tray diagonal connection

Diagonal connections in cable tray systems are used to provide structural stability and support by connecting trays at an angle using specialized fittings and support elements.

Purpose of Diagonal Connections

Diagonal connections are primarily used to: Enhance structural rigidity in long cable tray runs or at junctions. Distribute mechanical loads evenly across supports. Facilitate routing around obstacles or changes in direction where standard horizontal or vertical bends are insufficient.

Implementation

Use of Diagonal or Angle Fittings: Cable trays can be connected diagonally using angle brackets, gussets, or custom-fabricated fittings that allow one tray section to meet another at a non-orthogonal angle. These fittings are typically bolted or clamped to the tray rails. Support Elements: Diagonal connections often require additional support elements such as wall brackets, suspended supports, or center suspensions to maintain alignment and prevent sagging.

The support spacing should follow manufacturer recommendations based on tray type and load class. Fastening and Alignment: Ensure that tray ends are properly aligned before bolting. Use mounting plates or connector kits to secure the diagonal joint.

Check that the connection does not compromise the minimum bend radius of cables exiting the tray. Material Considerations: Diagonal connections should use the same material and finish as the tray (e.g., galvanized steel, aluminum) to maintain corrosion resistance and mechanical integrity.

Safety and Standards

Follow DIN E

N 61537 or equivalent standards for cable support systems to ensure mechanical stability and compliance. Verify that the diagonal connection does not create stress points that could damage cables or reduce tray load capacity. Ensure proper grounding and bonding if the tray system is metallic.

Practical Tips

For long diagonal runs, consider intermediate supports to reduce deflection. Use pre-fabricated diagonal fittings when available to simplify installation. Always check the load rating of the tray and fittings to ensure safe operation under the expected cable weight.

By following these guidelines, diagonal connections can be safely and effectively integrated into cable tray systems, maintaining both structural integrity and cable protection.