Electrical transmission is also categorized by its voltage level, which directly impacts its purpose and the distance it can cover.

• High-Voltage (HV): Typically operating at 115 kV to 230 kV, this is used for regional transmission networks, connecting major substations and cities.

• Extra-High Voltage (EHV): Operating at 345 kV to 765 kV, EHV lines form the core "superhighway" of the power grid, transmitting electricity in bulk over vast distances.

• Ultra-High Voltage (UHV): Operating at 800 kV and higher, UHV is the most advanced form of transmission, designed for maximum efficiency over extremely long distances, often used in large countries to move power from remote generation sources to demand centers.

At Ningbo Changshi, our tools and equipment are built to meet the rigorous demands of projects at every voltage level, ensuring that our customers have the reliable and high-performance equipment they need to build and maintain the power grids of today and tomorrow.