What is the role of an oxidation inhibitor in transformer oil?

The role of an oxidation inhibitor in transformer oil is to enhance the oil’s stability and prolong its lifespan by preventing the oxidative degradation of the oil. Oxidation inhibitors work by scavenging free radicals and slowing down the chemical reactions that lead to the formation of acids and sludge. This is crucial for maintaining the electrical insulating properties and overall performance of the transformer over time.