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High-current AC current transformer calibration using an automated sampling system

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4 Author(s)
Helko E. van den Brom ; VSL Dutch Metrology Institute, Thijsseweg 11, 2629 JA Delft, The Netherlands ; Leendert Jol ; Gert Rietveld ; Eddy So

A measurement setup is developed for the accurate ratio measurement of AC current transformers (CTs) for primary currents up to 5 kA. A unique property of the system is the use of digitizers for sampling of the secondary current signals and step-down transformers with a large number of current ratios. This allows for accurate comparison of CTs even when their nominal ratios are not equal.

Published in:

Precision Electromagnetic Measurements (CPEM), 2012 Conference on

Date of Conference:

1-6 July 2012