Parameters of Trough-type Cable Trays

Trough-type cable trays, also known as perforated trays, are designed with continuous bottom support and ventilation openings, typically available in standard widths of 100–600 mm, depths of 50–150 mm, and lengths of 2–3 meters, with material thickness varying by duty class.

Key Features

Design and Structure: Trough-type cable trays provide a partially enclosed bottom with perforations to support cables uniformly while allowing ventilation. This design is ideal where cable containment and support are more critical than maximum airflow, such as in instrumentation, control, and light power applications. They can be equipped with solid or ventilated covers depending on environmental and aesthetic requirements.

Standard Dimensions: Widths: Typically range from 100 mm to 600 mm, depending on cable volume and application.

Depths/

Sidewall Heights: Commonly 50 mm to 150 mm, ensuring adequate cable support and spacing. Lengths: Standard tray sections are usually 2–3 meters long, allowing modular installation and easy splicing. Material Thickness: Varies according to duty class (light, medium, heavy), with thicker materials used for higher load capacities.

Materials and Finishes: Trough trays are manufactured from steel, stainless steel, or aluminum. Aluminum offers excellent corrosion resistance due to its natural oxide layer, making it suitable for outdoor or corrosive environments. Steel trays may be galvanized or coated for additional protection.

Load and Support Considerations: The trays must be designed to handle the weight of cables, environmental factors, and potential external loads. Support spacing is typically determined by tray width, material, and load requirements, following IEC 61537 guidelines. Proper support ensures minimal sagging and maintains cable integrity.

Ventilation and Fill Ratio: Perforations allow heat dissipation and prevent cable overheating. The usable cable area is slightly less than the nominal width due to sidewalls and perforation patterns. Fill ratios should be calculated carefully to avoid overcrowding and ensure compliance with electrical codes.

Installation Compatibility: Trough-type trays are compatible with standard fittings, bends, risers, and covers. They can be integrated into larger cable management systems while maintaining electrical continuity and grounding as required by IEC 61537. Applications: These trays are commonly used in commercial, industrial, and data center environments where uniform cable support, moderate ventilation, and aesthetic considerations are important.

They are suitable for power, control, and communication cables, especially in areas with minimal heat buildup. By following these standard configurations and IEC guidelines, engineers and installers can ensure safe, reliable, and code-compliant cable management systems.