What are the best practices for transformer oil sampling to ensure accurate analysis and effective oil cleaning?

For accurate transformer oil sampling, follow these best practices: Use clean, dry containers specifically designed for oil sampling. Ensure the transformer is operating under normal conditions before sampling. Take samples from the middle of the tank to avoid contaminants from the top or bottom. Seal the samples immediately and label them clearly. Store them in a cool, dark place until analysis. Regular sampling helps monitor oil quality and informs the need for effective oil cleaning, such as using Drycore oil purification systems.