State of the Art Transformer Bushing Monitoring

Transformer bushings are one of the most critical components of a transformer. Up to 20% of major failures on high voltage transformers today can be related to bushings. Almost half of these failures result in catastrophic failures like explosions, fire or oil spillage. The cost of these damages and the lost opportunity to deliver energy could be several hundred times higher than the price of a bushing. Even a failing bushing which will not lead to a catastrophic failure can harm people due to burst porcelain insulators, catapulted through the air by the force of the arc of the breakdown.

For more information on preventing bushing failures, you can check out the full case study.