Principle of Tan Delta Test | Download Free PDF | Capacitor
Principle of Tan Delta Test | Download Free PDF | Capacitor
The document discusses the principle of tan delta testing, which measures the ratio of resistive and capacitive components of current passing through an insulator. A low tan delta ratio indicates a healthier insulator with minimal impurities. Tan delta testing involves applying a very low frequency voltage to isolate equipment and measuring the ratio. It must be low frequency to avoid high capacitive currents. Comparing new tan delta readings to past ones or seeing how the ratio changes with higher voltages can predict insulation deterioration over time.
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Additional reading:10 Questions You Should Know about Using a Tan Delta Tester for High Voltage Electrical Equipment
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