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Model of outdoor tubular busbar

Outdoor tubular busbars are available in copper or aluminium, designed for 33kV, 66kV, and 132kV substations, with hollow tubular structures optimizing current capacity and heat dissipation.

Material and Design

Outdoor tubular busbars are typically made from high-purity copper or aluminium. Aluminium busbars often use alloys such as 6061 or 6063, providing a lightweight, corrosion-resistant, and cost-efficient solution. The tubular design—a hollow round conductor—maximizes mechanical strength while reducing weight and improving heat dissipation compared to solid or flat busbars.

Copper busbars offer higher conductivity and are preferred where maximum current-carrying capacity is required.

Voltage Ratings and Applications

These busbars are designed for high-voltage outdoor substations, commonly rated for 33kV, 66kV, and 132kV. They serve as the main conductors connecting transformers, switchgear, and other substation equipment, ensuring reliable power distribution and minimal voltage drop.

Dimensions and Current Capacity

Typical aluminium tubular busbars feature conductor diameters around 120 mm with wall thicknesses of approximately 10 mm, providing a high cross-sectional area for efficient current flow and low resistance. Copper busbars are available in similar ranges, with dimensions tailored to the required current rating and mechanical constraints. The tubular structure also enhances heat dissipation, reducing temperature rise during operation.

Connectors and Accessories

Outdoor tubular busbars are compatible with a variety of rigid, expansion, and tee connectors, and bespoke connections can be manufactured to suit specific substation layouts. Accessories include clamps, insulators, and mounting hardware to ensure safe and reliable installation.

Manufacturer Support

Companies like Alcomet and HC Aluminium provide technical support for selecting the appropriate busbar model, interpreting substation drawings, and offering quotations for custom configurations. Early consultation with manufacturers can optimize design efficiency, cost, and installation time. In summary, outdoor tubular busbars are available in copper or aluminium, with hollow tubular designs for high-voltage substations, supporting 33kV to 132kV, and are supplied with a range of connectors and accessories to meet specific installation requirements.

Model of outdoor tubular busbar

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Technical note

This reference is intended for preliminary fiber and communications infrastructure research. Optical interface, fiber type, port or core capacity, electrical input and output, enclosure protection, cooling, installation limits and applicable standards must be verified for the specific project.

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