Increase of dielectromagnetics' applications in magnetic cores requires verification of their properties, assumed and used for the cores' design. This concerns, among others, assumption of the isotropy of their properties and the applied measuring method for determining of this property. Magnetic cores of various electrical machines are exposed to magnetization mostly in rotational field, while magnetic measurements practice is based on measurements in alternating fields. This causes real properties of the used cores to differ from the data on the materials used for their design. This, in turn, arises the necessity of conducting measurements in rotational fields in order to estimate the real magnetic properties of dielectromagnetics adjusted to their working environment, which can be used for the design of magnetic cores. The paper presents a certain range of magnetic measurements of dielectromagnetics by the use of a computerized measuring system for determination of magnetic properties in rotational magnetic fields. These measurements were conducted on selected dielectromagnetics. Particular attention in the paper is paid to an innovative approach for the estimation of the dielectromagnetics' anisotropy and its comparison to the anisotropy of a typical electrical sheet.
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