journal article·2014-10

Control of the dielectric properties of a grain oriented electrical steel coating

G. S. Korzunin, M. L. Lobanov, A. A. Redikultsev, L. V. Lobanova

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Abstract

The Franklin tester is the only standardized device that is used for the determination of the dielectric properties of electric-insulation coatings of electrical steels. It is used to measure the current value on ten electrodes with equal surface areas that contact the surface of a material; the current is then recalculated into the electric-resistance coefficient of the polarizing coating, which acts as the main characteristic of dielectric properties. It is shown that the values that are measured by a Franklin tester do not characterize the particular dielectric properties of the coating, but only indicate the presence of areas (defects) on which the coating is absent.
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Research context

OpenAlex topics: Non-Destructive Testing Techniques · Magnetic Properties and Applications · Power Transformer Diagnostics and Insulation

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References (18)

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