Specifications of copper strip for cable trays

Copper strips for cable trays typically range from 0. 08 mm to 6 mm in thickness and 10 mm to 1000 mm in width, with grades like T2 (GB/T 2059) and C11000 (ETP-Cu) used for electrical applications. Copper Strip Grades and PropertiesT2 Copper Strip (National Standard, China): Copper content ≥99.

9%, high conductivity (>100% IACS), excellent toughness, weldability, and bending performance. Available in soft (M), semi-hard (Y2), and hard (Y) states, with the soft state preferred for winding and flexible shielding in power equipment ( ). C11000 Copper Strip (American Standard, ETP-Cu): Equivalent to T2, used for shielding layers and conductor connections in medium and high-voltage cables.

Offers high strength, fatigue resistance, and corrosion resistance ( ). Mechanical and Electrical Characteristics: Copper strips are tested for tensile strength, yield strength, elongation, and resistivity at 20°C to ensure reliable electrical performance ( ).

Thickness and Width

Thickness: Electrical copper strips for cable trays typically range from 0. 08 mm to 1. 5 mm for shielding applications, while general-purpose copper strips can go up to 6 mm ( ).

Width: Can be customized from 10 mm to 1000 mm depending on cable diameter and application requirements. Medium and high-voltage cables commonly use 0. 3–1.

0 mm thick strips to balance flexibility and shielding effectiveness ( ). Form: Supplied in coils or sheets, hot-rolled or cold-rolled, with tolerances depending on the intended electrical or general application ( ).

Applications in Cable Trays

Shielding Layer: Copper strips wrap around cable cores to block electromagnetic interference and ensure stable power transmission ( ). Conductor Connections: Used for transformer leads, terminal blocks, and interconnections in cable trays, providing low-resistance paths and excellent heat dissipation ( ). Transformer Winding: Replacing round copper wire with strips improves fill rate, reduces transformer size, and lowers no-load and load losses ( ).

Cable Tray Considerations

Tray Dimensions: Width, depth, and material thickness of the tray affect cable fill, heat dissipation, and structural load. Ladder trays are preferred for heavy cable loads and high heat dissipation, while perforated trays provide ventilation and continuous support ( ). Compatibility: Copper strips must match the tray type and cable size to prevent overcrowding, overheating, or mechanical stress ( ).

Summary

For cable tray installations, select copper strips based on grade (T2 or C11000), thickness (0. 08–6 mm), width (10–1000 mm), and mechanical/electrical properties. Ensure the strip thickness and tray dimensions are compatible with the cable type, voltage level, and shielding requirements to maintain safety, conductivity, and long-term reliability ( ).