Construction of horizontal right angles for cable trays

Horizontal and right-angled cable trays are installed using standardized support systems, fittings, and mounting elements to ensure secure, compliant, and mechanically stable cable routing.

Horizontal Cable Tray Installation

Horizontal cable trays are the straight runs that carry cables across ceilings, walls, or floors. Key considerations include: Support spacing: The distance between support elements (brackets, cantilever arms, or suspended rods) must comply with the tray's load rating and cable weight. Typically, supports are spaced according to manufacturer specifications, often between 1.

2 m to 2 m for standard trays ( ). Support elements: Wall brackets, cantilever brackets, or ceiling suspensions are used to secure trays. For ceiling-mounted trays, threaded rod suspensions or TKS/TKUG cantilever brackets are common ( ).

Material selection: Steel, stainless steel, or aluminum trays are used depending on environmental conditions. Galvanized or pre-galvanized steel improves corrosion resistance, while stainless steel is preferred in highly corrosive environments ( ). Mounting: Trays are fastened using bolts, mounting plates, or direct rod suspensions.

Proper alignment and leveling are critical to prevent sagging and ensure cable protection ( ).

Right-

Angled (Horizontal or Vertical) BendsRight-angled cable trays are used to change the routing direction: Fittings: Horizontal or vertical bends, T-pieces, and crossovers allow directional changes. These fittings must be supported within 150 mm of the joint to maintain mechanical stability ( ). Support near bends: Additional brackets or cantilever supports are installed near bends to handle the change in load distribution and prevent deformation ( ).

Installation tips: Ensure that the bend radius meets the minimum bend radius of the cables to avoid damage. For mesh or ladder trays, rungs should maintain spacing of 150–230 mm to support cables adequately ( ). Inclined or vertical transitions: For height changes, cantilever brackets with adjustable fastenings (e.g., KTAS or KLAF fastenings) are used to maintain proper alignment and load support ( ).

General Considerations

Cable separation and grouping: Trays can be used to separate power, control, and communication cables to reduce interference ( ). Environmental factors: Evaluate exposure to water, oil, chemicals, or mechanical loads such as wind or snow. Select materials and coatings accordingly ( ).

Accessories: Covers, barrier strips, and cable protection rings can be added to protect cables from dust, mechanical damage, or electromagnetic interference ( ). Compliance: Follow relevant standards such as DIN EN 61537 for cable support systems and local electrical codes to ensure safety and reliability ( ). By following these guidelines, horizontal and right-angled cable trays can be installed safely, efficiently, and in compliance with industry standards, ensuring long-term durability and proper cable management.