Answer: An overhead power transmission line consists of several key components that work together to safely and efficiently transmit electricity. The most critical parts are:

• Conductors: The wires that carry the electric current. While copper was once common, modern transmission lines predominantly use ACSR (Aluminum Conductor Steel-Reinforced) for its optimal balance of light weight, high conductivity, and mechanical strength.

• Line Supports: Structures like steel towers or wooden/concrete poles that hold the conductors high above the ground.

• Insulators: Devices made of porcelain, glass, or polymer that prevent the current from flowing from the conductors to the supporting structures.

• Crossarms: Horizontal beams that hold the insulators and maintain the proper spacing between conductors.

• Ground Wires (Shield Wires): A wire placed at the top of the towers to protect the conductors from lightning strikes.

Ningbo Changshi provides a comprehensive range of overhead line equipment and tools specifically designed for the construction, stringing, and maintenance of these complex components, ensuring safe and reliable installation.