hv bushing

A high voltage (HV) bushing is a crucial component of a power transformer, serving as an interface between the internal high voltage winding and the outside environment. It is responsible for providing electrical insulation, protecting the transformer from electrical stress, and maintaining the electrical integrity of the system. HV bushings are typically made of porcelain or composite materials and have a cylindrical shape. They consist of a metal conductor, which is connected to the high voltage winding, and an insulating material, which covers the metal conductor and provides electrical insulation. The insulating material must have high electrical resistance and a high dielectric strength, while the metal conductor must be able to withstand high electrical and thermal stress. The design of HV bushings is critical to the overall performance of the transformer. They must be designed to withstand extreme weather conditions, such as high temperatures, humidity, and severe storms, withou...