Learn how to properly maintain the bushings on your electrical transformers.

Common methods and proposed parameters for online monitoring – Don’t miss out on this great article written by Qualitrol’s Technical Application Specialist, Thomas Linn.

Up to 20% of major failures on high voltage transformers today can be track back to bushings. Almost half of these failures result in catastrophic failures like explosions, fires or oil spillages. 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 and broken fragments that can be catapulted through the air by the force of the breakdown arc.