Why is silicone oil purification important for transformer performance?

Purification of silicone oil is crucial because contaminants like moisture, gases, and particulate matter can degrade its insulating and cooling properties. Contaminants reduce the dielectric strength of the oil, increasing the risk of electrical discharges and transformer failures. Moisture can lead to corrosion and accelerate aging of both the oil and the transformer components. Regular purification removes these impurities, restoring the oil’s optimal properties, enhancing transformer reliability, extending equipment life, and reducing maintenance costs.