MVA’s state of the art oil processing rigs with dual dry screw vacuum pumps and V2500 variable frequency drive booster pump are designed to process the largest transformers in the industry, allowing oil processing to be performed simultaneously while pulling vacuum on the main tank. Our crews have undergone rigorous training and plant visits, and specialize in commissioning 765kV, 1000 MVA EHV transformers. Our rigs operate at 2,400 gallons per hour, ensuring efficient and effective heat runs during the vacuum dry out procedure before final filling.
The oil is heated, dehydrated and degassed before the oil is introduced to the transformer. MVA continuously maintains a low vacuum during the final fill while monitoring the oil to ensure the transformer is filled with oil that exceeds the IEEE requirements.