Professional Answer: Conductor bundling involves using multiple conductors per phase instead of a single conductor. For 500kV lines, this practice is essential for several technical reasons:

• Reduces Corona Loss: The high electric field intensity around a single, large-diameter conductor at 500kV can cause a phenomenon known as corona discharge, leading to energy loss and radio interference. Bundling effectively reduces the electric field gradient at the conductor surface, minimizing this effect.

• Lowers Inductance: Bundled conductors reduce the overall inductance of the line, which in turn improves the line's voltage regulation and power transfer capability.

• Increases Current-Carrying Capacity: By using multiple conductors, the total cross-sectional area for current flow is increased, allowing the line to carry more power.

As a manufacturer, Ningbo Changshi supplies a full range of overhead transmission line equipment, including specialized spacers and dampers designed for bundled conductors to maintain their separation and prevent damage from wind-induced vibration.