This test is one of the most important methods for detecting the amount of insulation losses and identifying hidden defects in the transformer. Using the Tettex three-piece device provides high accuracy in measuring and analyzing results. Performing the tangent delta test plays an effective role in preventing sudden failures. At the Bandar Abbas Thermal Power Plant, this test is carried out in accordance with technical and safety standards. The results obtained are the basis for decision-making for preventive maintenance and extending the life of transformers.
