What are the main components of a typical Overhead Power Distribution Line system?

2025-07-18

A complete Overhead Power Distribution Line system includes:

  • Poles: The primary support structures, commonly made of wood, concrete, or steel.

  • Conductors: Wires (often made of aluminum or aluminum alloys) that carry the electrical current. They can be bare, insulated, or bundled (Aerial Bundled Cables - ABC).

  • Insulators: Ceramic, glass, or polymer devices that prevent electricity from flowing from the conductors to the grounded poles or crossarms.

  • Crossarms: Horizontal structures attached to poles that support insulators and conductors, maintaining separation between phases.

  • Transformers: Devices mounted on poles or pads that step down the voltage from the primary distribution level to voltages usable by consumers (e.g., 240V/400V).

  • Fuses and Reclosers: Protective devices that automatically interrupt current flow during faults (e.g., short circuits) to prevent widespread outages and equipment damage.

  • Surge Arresters: Devices that protect equipment from lightning strikes and other voltage surges.

  • Service Drops: Wires that extend from the distribution pole to the individual consumer's premises.

  • Grounding Wires: Systems to safely dissipate fault currents and lightning. Our extensive range includes tools for the installation and maintenance of all these critical components.

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