What is the maintenance schedule for oil filled transformers?

The maintenance schedule for oil filled transformers typically includes regular inspections and testing of transformer oil quality, including dielectric strength, moisture content, and dissolved gas analysis. Routine maintenance may involve oil filtration and replacement every 5 to 10 years, depending on the condition of the oil. Additionally, visual inspections for leaks, corrosion, and overall equipment condition should be conducted annually to ensure optimal performance and reliability of the oil filled transformers.