Single sheet tester for measuring core losses and permeabilities in a silicon steel sheet

A new method which eliminates some disadvantages of the Epstein method has been developed for the rapid measurement of core losses and permeabilities at 50 or 60 Hz of single-sheet specimens. It is shown that the instrument has the following performance: 1) good correlation of the measured value with Epstein testing, 2) high stability, 3) simplicity of operation, and 4) use of a wide single-sheet specimen.