A typical 3-phase overhead transmission line is a complex system composed of several critical components. The main parts include:

• Conductors: These are the wires that carry the electrical current. They are typically made of aluminum (ACSR) for its light weight and conductivity.

• Insulators: Made from materials like porcelain, glass, or polymers, insulators are used to separate the conductors from the supporting structures to prevent current from flowing to the ground.

• Supporting Structures: These are the towers (pylons) or poles that physically support the conductors and maintain a safe clearance from the ground. They can be made of steel, wood, or concrete, depending on the application and voltage level.

• Ground Wires/Shield Wires: These are protective wires run along the top of the towers to shield the phase conductors from lightning strikes.

• Hardware and Accessories: This includes a wide array of tools and equipment such as clamps, spacers (for bundled conductors), vibration dampers, and line fittings that hold the entire system together.

Ningbo Changshi specializes in manufacturing and exporting the full range of tools and equipment required for the construction and maintenance of these essential components, from stringing equipment to pole line hardware.