DGA Recommendations for New Units
A combination of dissolved gas levels and comments on the Rainbow Report provides DGA recommendations for new units. For newly installed transformers for of a small to medium size and class, SDMyers recommends retesting the dissolved gasses in three months, to obtain baseline data. For the larger, more expensive, and higher maintenance units, such as furnace transformers and generator step-ups, we recommend starting the DGA retest at one month.
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