EN 60404-2-1998 en Magnetic materials Part 2 Methods of measurement of the magnetic properties of electrical steel strip and sheet by means of an Epstein frame (Incorporates Amendm.pdf
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1、BRITISH STANDARD BS EN 60404-2:1998 +A1:2008 Magnetic materials Part 2: Methods of measurement of the magnetic properties of electrical steel strip and sheet by means of an Epstein frame ICS 29.030 BS EN 60404-2:1998+A1:2008 This British Standard was published under the authority of the Standards Bo
2、ard and comes into effect on 15 September 1996 BSI 2009 First published February 1985 Second edition August 1996 ISBN 978 0 580 65048 2 National foreword This British Standard is the UK implementation of EN 60404-2:1998+A1:2008. It is identical with IEC 60404-2:1996, incorporating amendment 1:2008.
3、It supersedes BS EN 60404-2:1998 which is withdrawn. The start and finish of text introduced or altered by amendment is indicated in the text by tags. Tags indicating changes to IEC text carry the number of the IEC amendment. For example, text altered by IEC amendment 1 is indicated by !“. The UK pa
4、rticipation in its preparation was entrusted to Technical Committee ISE/NFE/5, Magnetic alloys and steels. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users
5、 are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments/corrigenda issued since publication Amd. No. Date Comments 10038 July 1998 Renumbers BS 6404-2:1996 as BS EN 60404-2:1998 31 January 2009 Implementation of IEC a
6、mendment 1:2008 with CENELEC endorsement A1:2008i Contents Page Foreword 2 1 Scope and object 3 2 Normative references 3 3 General principles of a.c. measurements 3 4 Procedure for the measurement of the specific total loss 5 5 Procedure for the determination of the peak value of magnetic polarizati
7、on, r.m.s value of magnetic field strength, peak value of magnetic field strength and specific apparent power 7 6 General principles of d.c. measurements 9 7 Procedure for the d.c. measurement of the magnetic polarization 9 8 Test report 10 Annex ZA (normative) Normative references to international
8、publications with their corresponding European publications 19 Figure 1 Double-lapped joints 10 Figure 2 The 25 cm Epstein frame 11 Figure 3 Circuit for the wattmeter method 11 Figure 4 Circuit for measuring the r.m.s value of the magnetizing current 12 Figure 5 Circuit for measuring the peak value
9、of the magnetic field strength using a peak voltmeter 12 Figure 6 Circuit for measuring the peak value of magnetic field strength using a mutual inductor M D 13 Figure 7 Circuit for d.c. testing: to obtain discrete values of magnetic polarization 13 Figure 8 Circuit for d.c. testing: continuous reco
10、rding method 14 Annex A (informative) Digital sampling methods for the determination of the magnetic properties 15 Bibliography 18 BS EN 60404-2:1998+A1:2008 BSI 2008blankEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 60404-2:1998+A1 July 2008 ICS 29.030 Descriptors: Magnetic materials, measur
11、ement of magnetic properties of electrical steel sheet and strip, general principle, procedure, Epstein frame English version Magnetic materials Part 2: Methods of measurement of the magnetic properties of electrical steel strip and sheet by means of an Epstein frame (IEC 60404-2:1996) Matriaux magn
12、tiques Partie2:Mthodesdemesure des proprits magntiques des tles et bandes magntiques au moyen dun cadre Epstein (CEI 60404-2:1996) Magnetische Werkstoffe Teil2:VerfahrenzurBestimmung der magnetischen Eigenschaften von Elektroblech und -band mit Hilfe eines Epsteinrahmens (IEC 60404-2:1996) This Euro
13、pean Standard was approved by CENELEC on 1998-01-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical reference
14、s concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (English, French, Geman). A version in any other language made by translation under the responsibility of a CENELEC member
15、 into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands,
16、Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1998 CENELEC All
17、rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60404-2:1998 E 2 Foreword The text of the International Standard IEC 60404-2:1996, prepared by IEC TC68, Magnetic alloys and steels, was submitted to the formal vote and was approved by CENELEC as
18、 EN 60404-2 on 1998-01-01 without any modification. The following dates were fixed: Annexes designated “normative” are part of the body of the standard. In this standard, Annex ZA is normative. Annex ZA has been added by CENELEC. Endorsement notice The text of the International Standard IEC 60404-2:
19、1996 was approved by CENELEC as a European Standard without any modification. latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 1998-12-01 latest date by which the national standards conflicting with the EN ha
20、ve to be withdrawn (dow) 1998-12-01 Foreword to amendment A1 The text of document 68/365/FDIS, future The following dates were fixed: Endorsement notice The text of amendment 1:2008 to the International Standard IEC 60404-2:1996 was approved by CENELEC as an amendment to the European latest date by
21、which the amendment has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2009-03-01 latest date by which the national standards conflicting with the amendment have to be (dow) 2011-06-01 amendment 1 to IEC 60404-2:1996, prepared by IEC TC 6
22、8, Magnetic alloys and steels, was and was approved by CENELEC as amendment A1 to EN 60404-2:1998 on 2008-06-01. submitted to the IEC-CENELEC parallel vote Standard without any modification. BS EN 60404-2:1998+A1:2008 BSI 2008withdrawn 3 1 Scope and object This part of IEC404 is applicable to grain
23、oriented and non-oriented electrical sheet and strip for a.c. measurements of magnetic properties at frequencies up to 400Hz and for d.c. magnetic measurements. The object of this part is to define the general principles and the technical details of the measurement of the magnetic properties of elec
24、trical steel sheet and strip by means of an Epstein frame. The Epstein frame is applicable to test specimens obtained from electrical steel sheets and strips of any grade. The a.c. magnetic characteristics are determined for sinusoidal induced voltages, for specified peak values of magnetic polariza
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