What is a mineral oil-filled transformer?

A mineral oil-filled transformer is a type of electrical transformer that utilizes mineral oil as an insulating and cooling medium. This design helps manage the heat generated during operation and provides efficient electrical insulation, making it suitable for high-voltage applications. The mineral oil circulates within the transformer, absorbing heat from the core and windings and dissipating it through the radiator or cooling fins, improving overall performance and longevity. Additionally, mineral oil’s dielectric properties ensure safe electrical separation between conductive parts, making mineral oil-filled transformers a common choice in power transmission and distribution systems. It’s important to maintain proper oil quality through cleaning, regeneration, and testing to ensure the reliable operation of these transformers.