The corona effect is the ionization of air around a high-voltage conductor, which results in power loss, audible noise, and radio interference. It occurs when the electric field strength at the conductor's surface exceeds the dielectric strength of the surrounding air.

To reduce this effect in extra-high-voltage (EHV) lines, bundled conductors are used. Instead of a single conductor, a phase is made up of two or more conductors spaced a specific distance apart. This increases the overall effective diameter of the conductor bundle, which in turn lowers the electric field gradient at the surface, thereby reducing corona losses and interference.

Our specialized overhead transmission line equipment, including spacer dampers and conductor OHTLstringingequipment.com/Stringing-Blocks--Sheaves.html target='_blank'>Stringing Blocks, is designed to support the precise installation and maintenance of bundled conductor systems.