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Tan Delta testing of Current Tranformer (CT) - Theory & Practical Procedure

Tan delta test is an AC low voltage dielectric test that is carried out on insulation to determine its health. Tan Delta test is also called as loss angle test or dissipation factor test. Tan Delta test is carried out on various electrical equipments such as : 1) Current Transformer 2) Potential Transformer 3) Transformer Bushing 4) Transformer Windings 5) Capacitive Voltage Transformer 6) Coupling Capacitor  Purpose: Detecting incipient weakness in HV insulation Predicting remaining life of the equipment under test To get “benchmark reference reading” of the equipment when it is new, clean, dry and free from impurities ----------------------------------------------------------------- Recommended Videos: Power Transformer Nameplate Details Explained in Hindi:    • Transformer Nameplate Details Explain...   Difference between Metering CT & Protection CT :    • Difference between Metering CTs and P...   Nameplate details of Current Transformer:    • Current Transformer (CT) Nameplate De...   Testing of Various Substation Equipments:    • Testing of Substation Equipments   Testing of Lightning Arresters/Surge Arresters:    • Testing of Lightning Arresters/Surge ...   --------------------------------------------------------------------------