ASTM D 3455 - Standard Test Methods for Compatibility of Construction Material w

ASTM D 3455 - Standard Test Methods for Compatibility of Construction Material with Electrical Insulating Oil of Petroleum Origin has been used for Testing Transformer Oils with a product placed in it.
Aged Control Oil has a Power Factor of 0.032% at 100°C.
Aged Oil with a Test component has a Power Factor of 0.093% at 100°.

Is this increase acceptable?
If not why?
How much increase is acceptable?

Question Posted / jairaj

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ASTM D 3455 - Standard Test Methods for Compatibility of Construction Material with Electrical Insul..

Answer / Harendra Kumar

The observed increase in power factor (from 0.032% to 0.093%) indicates a potential issue, as the power factor should ideally decrease with time due to aging and not increase when a test component is added. However, without knowing the specific acceptable limits for this test, it's difficult to definitively state whether this increase is unacceptable. The acceptable increase limit would depend on various factors such as the type of transformer oil, the nature of the test component, and the specific requirements of the standard ASTM D 3455 being used. It's recommended to consult the guidelines provided by the standards organization or a subject matter expert for the exact acceptable limits.

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