Today, many companies are adjusting their costs and expenses, and are changing internal policies that help in reducing maintenance tasks and operations in electrical equipment. This obviously brings minimized costs, but only for a short period of time. In fact, this also results in increased risks in the long term because less maintenance means amplified threats. Also, such modifications and reductions result in making such transformers work above their normal load to get the expected performance. And, ultimately this results in making it difficult to obtain maximum profit from their normal work. Therefore, reduction in maintenance operations results in negative impacts like lack of efficiency and premature ageing.