What are the primary components of an overhead power line?

2025-08-10

An overhead power line is a complex system designed for the efficient and safe transmission of electrical energy. It consists of several key components, each playing a critical role:

  • Line Supports: These are the structures that hold the conductors at a safe height above the ground. Common types include wooden poles, concrete poles, and steel towers.

  • Conductors: These are the wires that carry the electrical current. They are typically made of copper, aluminum, or steel-reinforced aluminum (ACSR) to balance conductivity, strength, and weight.

  • Insulators: Made from materials like glass, porcelain, or polymers, insulators are used to separate the live conductors from the support structures, preventing the flow of electricity to the ground and ensuring safety.

  • Crossarms: These are horizontal supports mounted on the poles or towers to provide a mounting platform for the insulators and maintain the necessary distance between the conductors.

  • Ground Wires (Shield Wires): Installed at the very top of the support structures, these wires protect the main conductors from lightning strikes by providing a safe path for the current to the ground.

  • Hardware and Fittings: This includes a wide range of accessories such as clamps, guy wires, dampers, and connectors that are essential for the construction, tensioning, and stability of the entire line.

At Ningbo Changshi Electric Power Machinery Manufacturing Limited, we offer a comprehensive one-stop supply of high-quality tools and equipment for the installation and maintenance of all these components, ensuring the reliability and safety of your overhead line projects.

Get the latest price? We'll respond as soon as possible(within 12 hours)
For a better browsing experience, we recommend that you use Chrome, Firefox, Safari and Edge browsers.