Standard Requirements for Cable Tray Lifting Brackets

Cable tray lifting brackets must comply with IEC 61537 and BS EN 61537 standards, ensuring mechanical strength, proper support spacing, corrosion resistance, and safe installation.

Mechanical Strength and Load Capacity

Cable tray lifting brackets are designed to support the weight of the cable tray and the cables it carries, including additional dynamic loads such as those generated during short circuits. According to IEC 61537, brackets must be capable of withstanding the maximum expected load without deformation or failure, and load testing is recommended to validate their strength . The support distance, or spacing between brackets, is critical and must be calculated based on tray type, material, and cable weight .

Material and Corrosion Resistance

Brackets are typically made from steel, stainless steel, or aluminum, with appropriate galvanization or coatings to resist corrosion in various environments, including industrial, marine, or chemical settings . The material selection should consider environmental factors such as moisture, chemicals, and temperature variations to prevent premature failure.

Installation and Compatibility

Lifting brackets must be compatible with the cable tray system, including ladders, trays, or mesh types. They should allow secure attachment to walls, ceilings, or structural supports using standardized mounting elements. Fastening elements like screws or anchors are generally standardized separately and must ensure a rigid connection . Brackets should not be used as walkways or for personnel support, as this can compromise safety and system integrity.

Electrical and Safety Considerations

Cable tray systems, including lifting brackets, often serve as part of the grounding path. Brackets must maintain electrical continuity where required and comply with fire resistance and ventilation requirements to prevent overheating of cables . Proper installation ensures that the tray remains stable under mechanical and environmental stresses.

Summary of Key Requirements

• Compliance: IEC 61537 and BS EN 61537 standards
• Load Capacity: Must support cable weight and dynamic loads
• Support Spacing: Determined by tray type and load calculations
• Material: Steel, stainless steel, or aluminum with corrosion protection
• Installation: Secure attachment to structural supports; compatible with tray system
• Safety: Maintain electrical continuity, fire resistance, and prevent misuse By adhering to these standards, cable tray lifting brackets provide safe, durable, and reliable support for cable management systems in industrial and commercial installations .