Thickness of inner partition plate in galvanized cable tray

The inner partition plate in galvanized cable trays typically ranges from 1. 5 mm to 3 mm, depending on tray type, load class, and manufacturer specifications.

General Guidelines

In galvanized steel cable trays, inner partition plates are used to separate different cable types or circuits within the same tray, providing organization, reducing electromagnetic interference, and supporting smaller instrumentation or control cables. The thickness of these plates is influenced by: Tray width and height: Wider or deeper trays may require thicker partitions for structural stability. Load class: NEMA or IEC load ratings determine the mechanical strength required; higher load classes often use thicker plates.

Galvanization process: Hot-dip galvanization adds a thin zinc layer, which slightly increases overall thickness but does not significantly affect structural performance. Application environment: Outdoor or corrosive environments may require thicker or reinforced partitions to resist bending or corrosion over time. Typical Thickness RangesLight-duty trays (for small instrumentation or control cables): 1.

5–2 mmMedium-duty trays (for mixed power and control cables): 2–2. 5 mmHeavy-duty trays (for large power cables or high mechanical stress): 2. 5–3 mm These values are consistent with common industry practices for B-Line series, ABB, and Legrand cable trays.

Manufacturers may provide specific datasheets indicating the exact thickness for each tray model and partition configuration.

Additional Considerations

Splice plates and supports: Inner partitions are often integrated with splice plates or support brackets, which may require additional thickness or reinforcement to maintain structural integrity. Ventilation and EMI/RFI shielding: Solid partitions may be perforated or ventilated; thickness should balance mechanical strength with airflow and shielding requirements. Compliance: Ensure that the chosen thickness meets NEMA VE-1/VE-2 or IEC 61537 standards for cable tray systems.

For precise design or fabrication, it is recommended to consult the manufacturer's technical datasheet or engineering department, as the optimal thickness may vary based on specific project requirements and environmental conditions.