Ratio Testing of Transformers is performed to verify the correct turns ratio between the primary and secondary windings of a transformer. This test ensures that the voltage transformation is accurate and matches the design specifications. Using a transformer turns ratio (TTR) tester, voltage is applied to one winding, and the induced voltage in the other winding is measured. The ratio of these voltages should correspond to the expected turns ratio. Deviations may indicate issues like shorted turns, incorrect winding connections, or core problems. Ratio testing is a standard procedure during manufacturing, installation, and maintenance to confirm proper transformer functionality and performance.
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