What is the difference between inhibited and uninhibited transformer oil?

The difference between inhibited and uninhibited transformer oil lies in their chemical composition and performance characteristics. Inhibited transformer oil contains additives that enhance oxidation stability, preventing degradation and extending the oil’s lifespan. This type of oil is preferred for high-temperature applications. In contrast, uninhibited transformer oil lacks these additives, making it more susceptible to oxidation and breakdown over time, which can lead to reduced performance and increased maintenance needs.