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ÖNORM EN 10252:1997-03

Действует
Magnetic materials - Methods of measurement of magnetic properties of magnetic steel sheet and strip at medium frequencies
This European Standard is applicable to electrical steel sheet and strip for the construction
of magnetic circuits for use in the frequency range 400 Hz to 10 000 Hz.
This European Standard specifies the following methods for the measurement of rnagnetic
properties of electrical steel sheet and strip:
- a.c. measurements made with the 25 cm Epstein frame;
- determination of specific total losses by the Wattmeter method;
- determination of magnetic field strength excitation and current and specific apparent
power.
NOTE. The informative annex A gives the calculation method for the supplementary
loss arising from the use of the Epstein frame at medium frequencies.
Die vorliegende Norm gilt für Elektroblech und -band, das für den Aufbau magnetischer Kreise bestimmt ist, die im Frequenzbereich 400 Hz bis 10 000 Hz betrieben werden. Ihr Zweck ist es, die Terminologie zu definieren und Verfahren zur Messung der magnetischen Eigenschaften von Elektroblech und -band festzulegen.
ICS
29.030 Magnetic materials / Магнитные материалы
77.140.50 Flat. Including plate, sheet and strip / Стальной листовой прокат и полуфабрикаты. Включая плиты, листы и полосы