International comparison of current transformer calibration systems up to 10 kA at 50 Hz frequency

CPEM 2016 Conference Digest, Ottawa, Canada, July 2016, DOI 10.1109/CPEM.2016.7540493
K. Draxler, R. Styblíková, G. Rietveld, H. van den Brom, M. Schnaitt, W. Waldmann, E. Dimitrov, T. Cincar-Vujovic, B. Pączek, G. Sadkowski, G. Crotti, R. Martín, F. Garnacho, I. Blanc, R. Kämpfer, C. Mester, A. Wheaton, E. Mohns, A. Bergman, M. Hammarquist, H. Çayci, J. Hällström, E-P. Suomalainen.

Abstract
Current transformers (CTs) are precision devices that scale high currents down to values that can be easily handled by measurement equipment. To support CT applications in revenue metering, a comparison on AC current transformer calibration systems was performed among 15 European national metrology institutes using a precision CT as the travelling device. The first comparison results for the transformation ratios (4, 5, 6, 8, 10) kA/5 A of the travelling CT at nominal burden of 5 VA and 15 VA indicate good agreement between the participating laboratories. The main differences are found for phase displacement, at least partly caused by the instability of the traveling standard.

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