A high-voltage (HV) overhead line is typically defined as a power line carrying electricity at a voltage of 69 kV (69,000 volts) or higher. Its primary function is to efficiently transmit large amounts of power over long distances from generating stations to substations, minimizing energy loss. The key components of an HV overhead line include:

• Conductors: The wires that carry the current. For high-voltage lines, they are usually made of aluminum and often consist of multiple wires twisted together (bundled conductors) to increase capacity and reduce the electric field.

• Insulators: These devices isolate the high-voltage conductors from the supporting towers. They are typically made of glass, porcelain, or polymer composites and are assembled in long strings to provide sufficient insulation for the high voltage.

• Towers and Poles: The supporting structures, which for HV lines are usually tall steel lattice towers designed to withstand immense environmental stress.

• Ground Wires: Also known as shield wires, these are installed above the conductors to protect them from direct lightning strikes by safely directing the electrical discharge to the ground.

Our comprehensive Overhead Transmission line equipment is designed to handle all these components, from stringing the conductors to working on the support structures.