Transformer bushings for external and internal use are insulators used at the entrance of a medium voltage conductor into the transformer tank and isolating the conductor against the tank.
Transformer bushings for external and internal use are insulators used at the entrance of a medium voltage conductor into the transformer tank and isolating the conductor against the tank. The bushing is fixed to the tank with a flange.
Bushings are divided into the following groups:
•Low voltage bushings,
•Medium voltage bushings.
•All medium voltage bushings have a specific leakage distance of 20mm/kV.