Steel strand for cable trays

Steel strands or wire ties are commonly used to secure cables within steel or stainless steel cable trays, providing strength, durability, and corrosion resistance.

Purpose and Use

Steel strands, often in the form of galvanized or stainless steel wire ties, are used to fasten cables to cable trays to maintain organization, prevent sagging, and ensure safety in industrial and commercial installations. They are particularly important in environments where cables are exposed to vibration, movement, or heavy loads, as they provide a secure and long-lasting hold.

Material Considerations

Galvanized Steel: Offers good corrosion resistance for indoor and moderately humid environments. Suitable for standard steel cable trays. Stainless Steel (AISI 304 or 316): Provides superior corrosion resistance, ideal for outdoor, marine, or chemically aggressive environments.

Strength: The wire gauge should be selected based on the weight and number of cables being secured. Thicker strands provide higher tensile strength.

Installation Practices

Spacing: Tie cables at regular intervals along the tray, typically every 300–600 mm, depending on cable weight and tray type. Avoid Over-tightening: Ensure ties are snug but not so tight that they damage cable insulation. Compatibility: Use ties that are compatible with the tray material to prevent galvanic corrosion, especially when combining stainless steel ties with galvanized trays.

Accessories: In addition to wire ties, cable trays may use mounting plates, brackets, or support elements to secure cables and maintain proper spacing.

Standards and Safety

Cable support systems, including the use of steel strands for tying, should comply with DIN EN 61537 or equivalent standards, ensuring that the installation can withstand mechanical loads, environmental conditions, and maintain electrical safety. Properly tied cables reduce the risk of overheating, mechanical damage, and facilitate maintenance.

Summary

Using steel strands or wire ties is a reliable method to secure cables in steel or stainless steel trays. Selection should consider material, strength, and environmental conditions, while installation should follow standard spacing and safety practices to ensure a durable and safe cable management system.