Transformer Maintenance Knowledge Vault

Moisture in Transformers - Part 1

There are several methods for dehydrating oil in a transformer while simultaneously attempting to dry the paper insulation. However, drying the insulation (the most important step) is much more difficult than just dehydrating the oil.

Moisture in Transformers - Part 3

The three most common ways to reduce the moisture levels in a wet transformer are: a Field Vacuum Dry-Out, where heat and direct vacuum are applied to the transformer tank after the unit is completely drained of fluid; a Factory Dry-Out, where a transformer is removed from service, drained normally, and then transported to a repair facility; and by using an Online Dryer, such as a DryMax.

Dissolved Gas Analysis - Part 1

New transformers may have defects that can lead to failure. Frequently, such defects will leave signature dissolved gases in the oil. A timely Dissolved Gas Analysis may catch the fault as it begins, and before it advances far enough to do permanent damage.

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Moisture in Transformers - Part 1

Moisture in Transformers - Part 3

Dissolved Gas Analysis - Part 1

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