Regional Interlaboratory Comparison of Measuring Systems for Current Transformers Accuracy Testing
Dragana Naumović-Vuković, Slobodan Škundrić, Marko Cukman, Darko Ivanovic, Ivan Novko, Miroslav Bonic · 2022
The paper describes an intercomparison of measuring systems for current transformers accuracy testing between three laboratories Koncar -Instrument Transformers, Koncar -Electrical Engineering Institute and Electrical Engineering Institute Nikola Tesla.All laboratories are accredited according to EN/ IEC 17025: 2017 standard.The obtained discrepancies in ratio and phase errors are within participant's declared measurement uncertainties.All laboratories have confirmed their competence (|E n |≤1) for the applied measurement methods, in accordance with EN ISO/ IEC 17043.