What is the transformer oil purification process?

The transformer oil purification process involves several key steps to remove impurities and moisture from the oil, ensuring optimal performance and longevity of the transformer. Initially, the oil is filtered to eliminate solid particles. Next, it undergoes vacuum dehydration to extract dissolved water and gases. Finally, the oil is treated with clay or activated carbon to remove polar contaminants. This process enhances the dielectric strength and overall quality of the transformer oil, ensuring reliable operation.