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report
Comparisons of total power loss measurements performed on ring samples from 10 kHz to 1 MHz at room tempera-ture
Abstract
A single experimental setup with small toroids was currently used for the measurement of power losses in ferrite and nanocrystalline materials, suitable for characterization and use above 10 kHz and up to 1 MHz. At lower frequencies comparisons promoted by EURAMET and the IEC TC 68 have confirmed good reproducibility for both the Epstein and SST methods, with an uncertainty around 1 % for the power loss measurement. These comparisons, however, were only focused on measurements at 50 Hz and room temperature [1]. Within the HEFMAG project a new comparison was here performed between loss measurements on small toroidal samples according to 60404-6 between 10 kHz and 1 MHz using a ferrite toroid and two nanocrystalline toroids with different permeability.