AC-DC transfer difference measurement of AC shunts

The paper describes the ac-dc transfer difference measurement of six cage type ac shunts from 10 mA up to 10 A recently developed at the Faculty of electrical engineering and computing, University of Zagreb (UNIZG-FER). The shunts have been measured using step-up measurement procedure. Thus, two planar multijunction thermal converters (PMJTCs) are used. Ac-dc transfer of a PMJTC is taken as reference in the first step of step-up procedure. Ac-dc transfer difference of all shunts has been determined to be less than 20 μΩ/Ω under 10 kHz, while ac-dc difference for shunts in frequency range 20-100 kHz varies about few hundreds μΩ/Ω.