What is the process for transformer oil sampling in power transformers?

The process for transformer oil sampling in power transformers involves several key steps. First, ensure the transformer is de-energized and cooled to a safe temperature. Use a clean, dry sampling device to extract oil from the designated sampling point, typically located at the top of the transformer. Collect the oil in a clean, labeled container, ensuring minimal exposure to air. Finally, send the sample to a laboratory for analysis to assess the oil’s quality and condition.