What is the oxidation stability of silicone oil, and why is it significant for transformers?

Silicone oil has high oxidation stability due to the strong silicon-oxygen bonds in its molecular structure. This stability means it resists reacting with oxygen, even at elevated temperatures, reducing the formation of acidic byproducts and sludge. For transformers, this is significant because:

Extended Oil Life: Less frequent need for oil replacement.
Consistent Performance: Maintains dielectric strength and viscosity over time.
Reduced Maintenance Costs: Fewer interventions required to address degradation-related issues.
Enhanced Reliability: Minimizes the risk of transformer failures due to oil degradation.