What is a transformer oil tester used for in power transformers?

A transformer oil tester is used for assessing the quality and condition of transformer oil in power transformers. It measures key parameters such as dielectric strength, moisture content, acidity, and dissolved gases. These assessments help determine the oil’s insulating properties and overall effectiveness in preventing electrical failures, ensuring the reliable operation of power transformers and prolonging their lifespan. Regular testing is essential for maintenance and safety.