Measurement of Magnetic Material

This article deals with a problem of measuring of magnetic materials, especially a punched laminations, which are used in construction of electric machines. It is very complicated to reach precise value of magnetic parameters, when there are used different methods. In this paper, there are compared values from manufacturer (Epstein frame) and alternative values obtained during the measurement on own sample (in shape of toroid). Magnetic properties of material can be changed relatively easy so it is appropriate to measure up worked material