What is the specific gravity of transformer oil?

The specific gravity of transformer oil typically ranges from 0.88 to 0.92 at 15°C. This value indicates that transformer oil is lighter than water, which has a specific gravity of 1. The specific gravity can vary slightly depending on the oil’s composition and temperature, but it is crucial for determining the oil’s performance characteristics, including its insulating properties and ability to dissipate heat in power transformers.