What is the purpose of an oil conservator in a transformer?

The oil conservator in a transformer serves to maintain the oil level and ensure the continuous operation of the transformer without introducing air into the system. It acts as a reservoir that accommodates the expansion and contraction of the transformer oil due to temperature changes, thus preventing the formation of vacuum conditions that could lead to air ingress or contamination. Additionally, the oil conservator allows for the effective management of the insulating oil, helping to prolong the life of the transformer by minimizing oxidation and moisture accumulation. By providing this buffer, the oil conservator plays a critical role in sustaining optimal performance and reliability in transformer applications.