What does the transformer oil regeneration process involve?

Oil regeneration restores the insulating oil’s properties by removing contaminants like moisture, acids, sludge, and dissolved gases. The process includes filtration to remove particles, vacuum dehydration to eliminate water, and chemical treatment to neutralize acids. Adsorption methods using activated clay or other media can extract dissolved decay products. Regenerated oil regains its dielectric strength and cooling efficiency, extending the transformer’s life and reducing the need for new oil, which is both cost-effective and environmentally friendly.