How is transformer oil cleaned?

Transformer oil cleaning is a vital process that ensures the efficient operation of transformers by removing impurities and contaminants. The most common methods include filtration, which involves passing oil through filter membranes to eliminate solid particles, and centrifugation, where high-speed rotation separates contaminants based on density. Additionally, vacuum dehydration is often employed to remove moisture, while molecular sieves can absorb dissolved gases. Regular testing is essential to monitor the oil’s dielectric strength and overall quality. Effective transformer oil cleaning not only prolongs the lifespan of the transformer but also optimizes its performance and reduces the risk of electrical failures.