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Description / Abstract:
This guide applies to mineral-oil-immersed transformers and addresses:
The theory of combustible gas generation in a transformer
The interpretation of gas analysis
Suggested operating procedures
Various diagnostic techniques, such as key gases, Rogers ratios, Duval triangle, and other methods
Case studies and examples
Evaluation criteria and guidelines
A bibliography of related literature
Purpose
The purpose of this document is to provide a guide for evaluating the condition of a transformer using analytical tools and methods involving transformer mineral oil and associated developed gases