MEASURING THE REMANENT FACTOR OF TPY CLASS TRANSFORMERS

Karel Draxler - Radek Procházka - Michal Ulvr - Renata Styblíková

   The remanent factor K_r (the ratio between remanent flux density B_r and saturation flux density B_m) is an important parameter of TPY class transformers, which are used in protection systems. This paper focuses on a method for measuring the remanent factor K_r from the dynamic hysteresis loop, and on measuring uncertainty determination.

Keywords: remanent flux density, remanent factor, measuring system, hysteresis loop, transformers

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