Unlocked by Ergon: Insulating liquids test – lesson #5: Diagnostics and actions based on the results of transformer oil tests

The ILT course lesson focused on diagnostics and actions based on transformer oil tests. Key points included the importance of preventive oil treatments over corrective ones, the role of oil in transformer health, and the need for regular monitoring. Historical context highlighted the evolution from air insulation to modern mineral, silicon, and ester oils. Treatment options were discussed, emphasizing the significance of oil replacement for severe contamination and the use of additives to maintain oil quality. The session also covered the risks and challenges of oil treatment, including potential recontamination and the importance of proactive maintenance to ensure long-term transformer reliability.

The topics of the fifth lesson are:

• One or more oil tests exceed the limits, what should be my next step?
• Which maintenance actions need to be taken, and which are unnecessary or possibly harmful to transformer operation?

The content of this lesson is fully vendor agnostic but it is sponsored by Ergon.