Predictive maintenance of transformers is a technique aimed at increasing the reliability and extending the lifespan of these equipment. This technique consists of monitoring the condition of transformers and taking preventive actions before a failure occurs. In this article, we will present some of the best practices in predictive maintenance of transformers.

Temperature Monitoring Temperature is one of the main indicators of transformer failure. It is important to monitor the temperature of transformer oil, windings, and terminals. Monitoring should be done regularly and values recorded for later analysis. If any anomaly occurs, preventive measures should be taken.

Oil analysis Oil analysis is one of the most important techniques in the predictive maintenance of transformers. It allows for the identification of contamination, moisture, and oil degradation. It is important to perform regular analyses and establish a history of the transformer oil. From this history, it is possible to identify trends and take preventive measures.

Visual inspection: Visual inspection is another important technique in predictive transformer maintenance. It allows for the identification of anomalies such as leaks, physical damage, or corrosion. It is important that visual inspections are performed regularly and that the results are recorded.

Electrical tests: Electrical tests, such as the turns ratio test, winding resistance test, and partial discharge test, are essential for the predictive maintenance of transformers. They allow for the identification of electrical failures that could compromise transformer performance. It is important to perform these tests regularly and establish a history of the results.

Corrective maintenance It is important that corrective maintenance is carried out as quickly as possible after identifying a transformer failure. Corrective maintenance should be performed by a specialized team and must follow the manufacturer's established standards and procedures.

In summary, predictive maintenance of transformers is essential to ensure the reliability and extend the lifespan of this equipment. It is important to establish a regular maintenance program and follow the best practices presented in this article. This way, it is possible to minimize the risk of failures and increase transformer efficiency.