What is the function of an oil temperature gauge in a transformer?

An oil temperature gauge in a transformer is essential for monitoring the temperature of the insulating oil, ensuring it remains within safe operational limits to facilitate optimal performance and longevity of the transformer. By providing real-time temperature readings, it helps in identifying potential overheating issues that can lead to degradation of the insulating properties of the oil and risk damage to the transformer components. This monitoring also plays a critical role in planning maintenance and conducting oil pulling transformation processes to maintain oil quality and efficiency, thereby contributing to the overall reliability and performance of the electrical system.