Ratio testing of transformers is a critical procedure used to verify the correct turns ratio between the primary and secondary windings of a transformer. This test ensures the transformer delivers the intended voltage transformation and operates efficiently. Conducted using a transformer turns ratio (TTR) tester, the test compares the actual ratio with the rated design values. Deviations may indicate issues such as winding damage, shorted turns, or connection problems. Ratio testing is essential during manufacturing, commissioning, and routine maintenance to ensure proper functionality and safety. Accurate results help maintain system reliability and prevent voltage irregularities in electrical power distribution systems.
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