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Calibration of Voltage and Current Transformers from a Single Instrument – Calibration of Instrument Transformers with Different Rated Ratios Using One Single Reference Standard – Calibration of Voltage Transformers (VT) up to 800 kV When Used with MI 2500 Series of HV Dividers and Standard Capacitors – Calibration of Current Transformers (CT) up to 10000 A When Used With MI 7020 and/or 7200 Series of Precision Current Transformers and/or Current Comparators – Short Measurement Times with High Accuracy and Low Inherent Burdens – Instrument Applications are Valid for Single Phase Measurements. Three Phase Transformers Measurements Performed by Testing Each Phase Separately – Test Frequency from 15 to 100 Hz