What is the hermetically sealed transformer oil sampling procedure?

The hermetically sealed transformer oil sampling procedure involves several critical steps to ensure accurate analysis. First, ensure the transformer is offline and de-energized. Use a clean, dry sampling device to extract oil from the designated sampling point. Seal the sample container immediately to prevent contamination. Label the container with relevant information, including date and time of sampling. Finally, transport the sample to a laboratory for testing, maintaining its hermetic seal throughout the process.