How is dehydration of transformer oil performed?

Dehydration of transformer oil is performed using various methods to remove moisture and impurities, essential for maintaining the oil’s insulation properties and overall performance. One common method is through the application of vacuum dehydration, where transformer oil is heated and subjected to a vacuum environment. This process lowers the boiling point of water, allowing moisture to evaporate, which is then extracted from the oil. Additionally, centrifugal dehydration can be employed, utilizing centrifugal force to separate water and particulates from the oil effectively. Another option is using desiccant filtration, where materials that absorb moisture are used to cleanse the oil. Regardless of the method, regular dehydration of transformer oil is crucial in preventing electrical failures and extending the life of transformers.