Historical
IEEE Std C57.146-2005
IEEE Guide for the Interpretation of Gases Generated in Silicone-Immersed Transformers
This guide is intended to apply to silicone-immersed transformers for which the silicone fluid was the fluid supplied when the transformer was originally manufactured. It does not address transformers that have been retro-filled. The theory of combustible gas generation in a siliconefilled transformer, recommended procedures for sampling and analysis, recommended actions based on the interpretation of results, and a bibliography of related literature are addressed in this guide.
Institute of Electrical and Electronics Engineers [ieee]