Annual dielectric liquid testing and diagnostic analysis of the transformer insulating oil will help transformer owners keep their fleet functional and extend asset life. Testing produces a lot of data, however, and it can be challenging to understand what all that information means. This guide walks you through all the tests for your power transformer, including testing for fault gases, dielectric breakdown voltage, Karl Fischer testing, liquid power factor, partial discharge, and other relevant tests.

Download our handy reference to help you grasp the fundamentals of transformer oil testing and how your results can impact the reliability of your transformer. We'll also send you a few extra tips on how to maintain reliability beyond oil testing.