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  5. Results processing and evaluation of uncertainty measurement at high voltage ac calibration measurement systems

Results processing and evaluation of uncertainty measurement at high voltage ac calibration measurement systems

Y.L. Anokhin, R.V. Vendichanskiy, V.V. Kopshyn
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The article is devoted to the calibration of high voltage alternating current measuring systems, which is used to measure the applied high voltage withstand voltage test transformers and reactors. The procedure of calibration of the high voltage alternating current measuring system with the national standards of AC voltage to 220 kV was proposed. The results processing of measurements are presented. The main sources of uncertainty in the calibration measurements are examined. The metrological traceability of measurements to national standards is shown.
Keywords: high voltage measuring system, scale factor, voltage fluctuation, relative error, measurement uncertainty