Setup and Characterisation of Reference Current-to-Voltage Transformers for Wideband Current Transformers Calibration up to 2 kA

Yeying Chen, Enrico Mohns, Henrik Badura, Peter Räther & Mario Luiso
This paper describes the setup and characterisation of a set of wideband Current-to-Voltage (C-to-V) transformers equipped with a symmetrical winding arrangement on its primary side. The transformer set is being developed at PTB and contributes to the European project “FutureGrid II – metrology for the next-generation digital substation instrumentation”. The objective of this paper was to use the reference transformer to calibrate the digital instrument transformer (IT) not only accurately at power frequency but also...
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