What is the procedure for conducting a dissolved gas analysis of transformer oil?

The procedure for conducting a dissolved gas analysis of transformer oil involves several steps. First, a sample of transformer oil is collected in a clean, gas-tight container to prevent contamination. The sample is then analyzed using gas chromatography to identify and quantify dissolved gases, such as hydrogen, methane, and ethylene. The results are compared against established standards to assess the condition of the transformer and identify potential issues related to insulation breakdown or overheating.