EN 60404-2:1998
(Main)Magnetic materials - Part 2: Methods of measurement of the magnetic properties of electrical steel strip and sheet by means of an Epstein frame
Magnetic materials - Part 2: Methods of measurement of the magnetic properties of electrical steel strip and sheet by means of an Epstein frame
Applies to grain oriented and non-oriented electrical sheet and strip for a.c. measurements of magnetic properities at frequencies up to 400 Hz and for d.c. magnetic measurements. Defines the general principles and the technical details of the measurement of the magnetic properties of electrical steel sheet and strip by means of an Epstein frame. The a.c. magnetic characteristics are determined for sinusoidal induced voltages, for specified peak values of magnetic polarization and for a specified frequency.
Magnetische Werkstoffe - Teil 2: Verfahren zur Bestimmung der magnetischen Eigenschaften von Elektroband und -blech mit Hilfe eines Epsteinrahmens
Matériaux magnétiques - Partie 2: Méthodes de mesure des propriétés magnétiques des bandes et tôles magnétiques en acier au moyen d'un cadre Epstein
S'applique aux tôles et bandes magnétiques à grains orientés et non orientés, pour le mesurage des propriétés magnétiques en courant alternatif jusqu'à la fréquence de 400 Hz, et pour les mesures magnétiques en courant continu. Définit les principes généraux et les détails techniques du mesurage des propriétés magnétiques des tôles et bandes magnétiques au moyen d'un cadre Epstein. Les caractéristiques magnétiques en courant alternatif sont déterminées pour des tensions induites sinusoïdales, pour des valeurs crêtes particulières de la polarisation magnétique et pour une fréquence spécifiée.
Magnetic materials - Part 2: Methods of measurement of the magnetic properties of electrical steel sheet and strip by means of an Epstain frame (IEC 60404-2:1996)
Ta del standarda IEC 404 se uporablja za zrnato orientirano in neorientirano elektropločevino ter trakove za merjenje magnetnih lastnosti pri izmeničnem toku in frekvencah do 400 Hz ter za magnetne meritve pri enosmernem toku.
Namen tega dela je opredeliti splošna načela in tehnične podrobnosti za merjenje magnetnih lastnosti električnih jeklenih pločevin in trakov s pomočjo Epsteinovega okvira.
Epsteinov okvir se uporablja za preskusne vzorce, pridobljene iz elektropločevine in trakov katerega koli razreda. Magnetne lastnosti pri izmeničnem toku se določijo za sinusoidno inducirane napetosti, za določene najvišje vrednosti magnetne polarizacije in za določeno frekvenco.
Meritve je treba opraviti pri sobni temperaturi (23 ± 5) °C na preskusnih vzorcih, ki so bili pred tem razmagneteni.
Meritve pri višjih frekvencah je treba opraviti v skladu s standardom IEC 404-10.
OPOMBA: V tem standardu je izraz »magnetna polarizacija« uporabljen tako, kot je opredeljen v standardu IEC 50(221). V nekaterih standardih iz skupine standardov IEC 404 je bil uporabljen izraz »gostota magnetnega pretoka«.
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SLOVENSKI STANDARD
SIST EN 60404-2:2002
01-september-2002
Magnetic materials - Part 2: Methods of measurement of the magnetic properties
of electrical steel sheet and strip by means of an Epstain frame (IEC 60404-2:1996)
Magnetic materials -- Part 2: Methods of measurement of the magnetic properties of
electrical steel sheet and strip by means of an Epstein frame
Magnetische Werkstoffe -- Teil 2: Verfahren zur Bestimmung der magnetischen
Eigenschaften von Elektroblech und -band mit Hilfe eines Epsteinrahmens
Matériaux magnétiques -- Partie 2: Méthodes de mesure des propriétés magnétiques
des tôles et bandes magnétiques au moyen d'un cadre Epstein
Ta slovenski standard je istoveten z: EN 60404-2:1998
ICS:
17.220.20 0HUMHQMHHOHNWULþQLKLQ Measurement of electrical
PDJQHWQLKYHOLþLQ and magnetic quantities
29.030 Magnetni materiali Magnetic materials
SIST EN 60404-2:2002 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 60404-2:2002
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SIST EN 60404-2:2002
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SIST EN 60404-2:2002
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SIST EN 60404-2:2002
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SIST EN 60404-2:2002
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SIST EN 60404-2:2002
NORME CEI
INTERNATIONALE I E C
404-2
INTERNATIONAL
Troisième édition
STANDARD
Third edition
1996-03
Matériaux magnétiques —
Partie 2:
Méthodes de mesure des propriétés
magnétiques des tôles et bandes magnétiques
au moyen d'un cadre Epstein
Magnetic materials —
Part 2:
Methods of measurement of the magnetic
properties of electrical steel sheet and strip
by means of an Epstein frame
© CEI 1996 Droits de reproduction réservés —
Copyright — all rights reserved
Aucune partie de cette publication ne peut être reproduite ni
No part of this publication may be reproduced or util¢ed in
utilisée sous quelque forme que ce soit et par aucun pro- any form or by any means, electronic or mechanical,
cédé, électronique ou mécanique, y compris la photocopie et including photocopying and microfilm, without permission
les microfilms, sans l'accord écrit de l'éditeur. in writing from the publisher.
Bureau Central de la Commission Electrotechnique Internationale 3, rue de Varembé Genève, Suisse
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For price, see current catalogue
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SIST EN 60404-2:2002
404-2 © IEC:1996 - 3 -
CONTENTS
Page
FOREWORD 5
Clause
1 Scope and object 7
2 Normative references 7
3 General principles of a.c. measurements 9
3.1 Principle of the 25 cm Epstein frame method 9
3.2 Test specimen 9
3.3 The 25 cm Epstein frame 11
3.4 Air flux compensation 13
3.5 Power supply 13
3.6 Voltage measurement 15
3.7 Frequency measurement 15
3.8 Power measurement 15
4 Procedure for the measurement of the specific total loss 15
4.1 Preparation for measurement 15
4.2 Adjustment of power supply 17
4.3 Measurement of power 19
4.4 Determination of the specific total loss 19
4.5 Reproducibility of the specific total loss measurement 19
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 21
5.1 Test specimen 21
5.2 Principle of measurement 21
5.3 Reproducibility 25
6 General principles of d.c. measurements 25
6.1 Principle of the 25 cm Epstein frame method 25
6.2 Test specimen 25
6.3 The 25 cm Epstein frame 25
6.4 Air flux compensation 25
6.5 Power supply 27
6.6 Apparatus accuracy 27
7 Procedure for the d.c. measurement of the magnetic polarization 27
7.1 Preparation for measurement 27
7.2 Determination of the magnetic polarization 27
7.3 Determination of the magnetic hysteresis loop 29
7.4 Reproducibility of the measurement of the magnetic polarization 29
8 Test report 29
Figures 31
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SIST EN 60404-2:2002
404-2 © IEC:1996 – 5–
INTERNATIONAL ELECTROTECHNICAL COMMISSSION
MAGNETIC MATERIALS -
Part 2: Methods of measurement of the magnetic properties
of electrical steel sheet and strip by means of an Epstein frame
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization
comprising all national electrotechnical committees (IEC National Committees). The object of the IEC is to
promote international co-operation on all questions concerning standardization in the electrical and electronic
fields. To this end and in addition to other activities, the IEC publishes International Standards. Their
prep
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