The transformer oil regeneration system UVM-R-0.7 serves for regeneration of insulation oil to its virgin characteristics. The system also provides filtration, drying, discoloration and removal of particulate, sludge and other soluble oil decay products. Application of the system allows acid number of oil to be improved. It is used to regenerate insulating oils in transformers that are being installed or repaired. It is applicable for high-voltage power transformers, switches, i.e. high-voltage equipment.