SN EN 60404-2 : 1998
Current
The latest, up-to-date edition.
MAGNETIC MATERIALS - PART 2: METHODS OF MEASUREMENT OF THE MAGNETIC PROPERTIES OF ELECTRICAL STEEL SHEET AND STRIP BY MEANS OF AN EPSTEIN FRAME
12-01-2013
Committees responsible
National foreword
EN foreword
1 Scope and object
2 Normative references
3 General principles of a.c. measurements
4 Procedure for the measurement of the specific total
loss
5 Procedure for the determination of the peak value of
magnetic polarization, r.m.s. value of magnetic field
strength, peak value of magnetic field strength and
specific apparent power
6 General principles of d.c. measurements
7 Procedure for the d.c. measurement of the magnetic
polarization
8 Test report
Annex ZA (normative) Normative references to international
publications with their corresponding European publications
Figures
1 Double-lapped joints
2 The 25 cm Epstein frame
3 Circuit for the wattmeter method
4 Circuit for measuring the r.m.s value of the magnetizing
current
5 Circuit for measuring the peak value of magnetic field
strength using a peak voltmeter
6 Circuit for measuring the peak value of magnetic field
strength using a mutual inductor MD
7 Circuit for d.c. testing: to obtain discrete values of
magnetic polarization
8 Circuit for d.c. testing: continuous recording method
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