Guide for transformer maintenance

This Technical Brochure replaces TB 445 (published in 2011)

Maintenance, availability and reliability are closely related and the transformer user has to specify a level of maintenance that will ensure an acceptable level of transformer reliability in the particular context.  This guide has been prepared to help transformer users to define and apply best practice for transformer maintenance. Subjects including best practice, component selection, checking and testing in order to evaluate transformer condition, time intervals for the various actions, advanced maintenance activities, and human and material aspects of transformer maintenance.