Uncertainties associated with current measurements: Analysis by the finite element method

Issue title: Special Volume: Proceedings of the eleventh International Symposium on Applied Electromagnetics and Mechanics ISEM-Versailles ISEM 03

Article type: Research Article

Authors: Letosa, J.^{a; *} | Usón, A.^a | Artal, J.S.^a | Samplón, M.^a | Arcega, F.J.^a

Affiliations: [a] Department of Electrical Engineering, Escuela Universitaria de Ingeniería Técnica Industrial, Campus Tecnológico del Actur, University of Zaragoza. María de Luna n° 3. Edificio C 'Torres Quevedo', 50018. Zaragoza, Spain. Tel.: +34 976 762589; Fax: +34 976 762226; E-mail: {jletosa, auson, jsartal, msamplon, arcegafj}@unizar.es

Correspondence: [*] Corresponding author: E-mail: [email protected]

Abstract: The paper analyses the effect of crosstalk magnetic fields in current measurement devices with magnetic cores, as clamp-type current meters and current transformers. FEM modelization was used to calculate relative errors due to the crosstalk currents and how these errors are affected by variables as permeability, non-linearities and distance. Experimental results are also reported, in order to validate the numerical calculations. The measurements were obtained using the resources of the LME (Electric Metrology Laboratory) of the Electrical Engineering Department of the University of Zaragoza, accredited by ENAC, a member of EA (European Co-operation for Accreditation).

Keywords: high current, clamp-type current meters, crosstalk error, calibration, finite elements method

DOI: 10.3233/JAE-2004-554

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 19, no. 1-4, pp. 159-164, 2004