IEEE C57.104-2008

Guide for the Interpretation of Gases Generated in Oil-Immersed Transformers

Detailed procedures for analyzing gas from gas spaces or gas-collecting devices as well as gas dissolved in oil are described. The procedures cover: the calibration and use of field instruments for detecting and estimating the amount of combustible gases present in gas blankets above oil, or in gas detector relays; the use of fixed instruments for detecting and determining the quantity of combustible gases present in gas-blanketed equipment; obtaining samples of gas and oil from the transformer for laboratory analysis; laboratory methods for analyzing the gas blanket and the gases extracted from the oil; and interpreting the results in terms of transformer serviceability. The intent is to provide the operator with useful information concerning the serviceability of the equipment. An extensive bibliography on gas evolution, detection, and interpretation is included.

Institute of Electrical and Electronics Engineers [ieee]

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