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
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
