​​​​​​​​​​​Oil testing has been considered a critical part of the evaluation of large power transformers and other essential equipment for many years. Sampling techniques for Dissolved Gas Analysis (DGA), moisture content, ac breakdown and other oil tests have sometimes been questioned as to the effect they can have on results. NEETRAC has been working on a study to evaluate and compare methods, which may be of use to co-ops who use oil samples to make decisions about essential equipment.

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