What is the SOP for transformer oil filtration in power transformers?

The SOP for transformer oil filtration in power transformers typically includes several key steps. First, the transformer is isolated and de-energized. Next, the oil is drained and filtered using a vacuum filtration system to remove moisture, particulate matter, and dissolved gases. The filtration process should ensure that the oil meets specified dielectric strength and moisture content standards. Finally, the filtered oil is reintroduced into the transformer, and the system is tested for proper operation.