What additives are used in silicone oil for transformers, and what are their effects?

Silicone transformer oils are typically used without additives due to their inherent stability and performance characteristics. However, in some cases, additives may be included to enhance specific properties:

Antioxidants: Prevent oxidative degradation, extending oil life.
Metal Deactivators: Inhibit catalytic effects of metal contaminants.
Corrosion Inhibitors: Protect transformer components from corrosion.
Antifoam Agents: Reduce foam formation during operation.
These additives help maintain the oil’s insulating and cooling effectiveness, ensuring consistent transformer performance.