Vacuum Plant and Instruments Manufacturing Company Limited manufactures Vapour Phase System for Power Transformers. Vacuum Plant and Instruments Manufacturing Company Limited offers Vacuum Pressure Impregnation Plants for High Voltage Rotating Machines and Vapour Phase Drying Plants for Power Transformers. The Vapour Phase System for Power Transformers uses kerosene vapours as heat carrier that imparts their latent heat to the Transformer when comes in contact and provides uniform and faster heating.