How does an oil filter machine for transformers remove moisture and particles?

An oil filter machine removes contaminants through a combination of vacuum dehydration, filtration, and degassing. Moisture is extracted by heating the oil and exposing it to vacuum, allowing water vapor to evaporate at low temperatures. Solid particles are removed using fine filter elements that trap cellulose fibers, carbon residues, and metallic debris. Degassing eliminates dissolved air and fault gases. This process restores dielectric strength, improves heat transfer, and slows insulation aging, making filtration essential during maintenance and life extension programs.