Test method for the mechanical strength of cores made of magnetic oxides

Specifies a test method for the mechanical strength of cores made of magnetic oxides. This test method is suitable for most of the E-cores, ETD-cores and I-cores but other core types such as U-cores could be tested according to a derived method agreed by the parties concerned.

Prüfverfahren zur Bestimmung der mechanischen Festigkeit von magnetischen Oxidkernen

Méthode d'essai pour la résistance mécanique des noyaux en oxydes magnétiques

Cette norme existe en langue anglaise uniquement.

Test methods for the mechanical strength of cores made of magnetic oxides (IEC 61631:2000)

General Information

Status
Published
Publication Date
10-Oct-2001
Current Stage
6060 - Document made available
Due Date
11-Oct-2001
Completion Date
11-Oct-2001

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SLOVENSKI STANDARD
SIST EN 61631:2002
01-september-2002
Test methods for the mechanical strength of cores made of magnetic oxides (IEC
61631:2000)
Test method for the mechanical strength of cores made of magnetic oxides
Prüfverfahren zur Bestimmung der mechanischen Festigkeit von magnetischen
Oxidkernen
Méthode d'essai pour la résistance mécanique des noyaux en oxydes magnétiques
Ta slovenski standard je istoveten z: EN 61631:2001
ICS:
29.100.10 Magnetne komponente Magnetic components
SIST EN 61631:2002 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 61631:2002
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SIST EN 61631:2002
EUROPEAN STANDARD EN 61631
NORME EUROPÉENNE
EUROPÄISCHE NORM October 2001
ICS 29.100.10
English version
Test method for the mechanical strength
of cores made of magnetic oxides
(IEC 61631:2001)
Méthode d'essai pour la résistance Prüfverfahren zur Bestimmung der
mécanique des noyaux en oxydes mechanischen Festigkeit von
magnétiques magnetischen Oxidkernen
(CEI 61631:2001) (IEC 61631:2001)

This European Standard was approved by CENELEC on 2001-09-01. 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 references 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, German). A version in any other

language made by translation under the responsibility of a CENELEC member 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, Malta, Netherlands,

Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2001 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 61631:2001 E
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SIST EN 61631:2002
EN 61631:2001 - 2 -
Foreword

The text of document 51/599/FDIS, future edition 1 of IEC 61631, prepared by IEC TC 51, Magnetic

components and ferrite materials, was submitted to the IEC-CENELEC parallel vote and was

approved by CENELEC as EN 61631 on 2001-09-01.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2002-06-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2004-09-01
Annexes designated "normative" are part of the body of the standard.
In this standard, annexes A and ZA are normativ.
Annex ZA has been added by CENELEC.
__________
Endorsement notice

The text of the International Standard IEC 61631:2001 was approved by CENELEC as a European

Standard without any modification.
__________
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SIST EN 61631:2002
- 3 - EN 61631:2001
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

This European Standard incorporates by dated or undated reference, provisions from other

publications. These normative references are cited at the appropriate places in the text and the

publications are listed hereafter. For dated references, subsequent amendments to or revisions of any

of these publications apply to this European Standard only when incorporated in it by amendment or

revision. For undated references the latest edition of the publication referred to applies (including

amendments).

NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant

EN/HD applies.
Publication Year Title EN/HD Year
IEC 61246 1994 Magnetic oxide cores (E-cores) of--
rectangular cross-section and
associated parts - Dimensions
- - Tensile testing of metallic materials EN 10002-2 1992
Part 2: Verification of the force
measuring sytem of the tensile testing
machine
ISO 4677-1 1985 Atmospheres for conditioning and--
testing - Determination of relative
humidity
Part 1: Aspirated psychrometer method
ISO 4677-2 1985 Part 2: Whirling psychrometer method - -
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SIST EN 61631:2002
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SIST EN 61631:2002
NORME CEI
INTERNATIONALE IEC
61631
INTERNATIONAL
Première édition
STANDARD
First edition
2001-06
Méthode d'essai pour la résistance mécanique
des noyaux en oxydes magnétiques
Test method for the mechanical strength
of cores made of magnetic oxides
 IEC 2001 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 utilized in

utilisée sous quelque forme que ce soit et par aucun procédé, any form or by any means, electronic or mechanical,

électronique ou mécanique, y compris la photocopie et les including photocopying and microfilm, without permission in

microfilms, sans l'accord écrit de l'éditeur. writing from the publisher.
International Electrotechnical Commission 3, rue de Varembé Geneva, Switzerland
Telefax: +41 22 919 0300 e-mail: inmail@iec.ch IEC web site http://www.iec.ch
CODE PRIX
Commission Electrotechnique Internationale
PRICE CODE
International Electrotechnical Commission
Pour prix, voir catalogue en vigueur
For price, see current catalogue
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SIST EN 61631:2002
61631 © IEC:2001 – 3 –
CONTENTS

FOREWORD...........................................................................................................................5

INTRODUCTION.....................................................................................................................7

1 Scope...............................................................................................................................9

2 Normative references........................................................................................................9

3 Definitions ........................................................................................................................9

4 Apparatus.........................................................................................................................9

4.1 Test core support and loading wedge.......................................................................9

4.2 Testing device .........................................................................................................9

4.3 Humidity measuring device ....................................................................................11

5 Test cores ......................................................................................................................11

5.1 Number of test-cores .............................................................................................11

5.2 Precautions ...........................................................................................................11

6 Testing ...........................................................................................................................11

6.1 Test conditions ......................................................................................................11

6.2 Test procedures ....................................................................................................11

Annex A (normative) Standard E core dimensions and their support for strength test ............21

Figure 1 – E-test ...................................................................................................................13

Figure 2 – W-test ..................................................................................................................15

Figure 3 – T-test ...................................................................................................................17

Figure 4 – M-test...................................................................................................................19

Figure 5 – I-test ....................................................................................................................19

Figure A.1 – Designation of E core ........................................................................................21

Table A.1 – Test core support ...............................................................................................23

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SIST EN 61631:2002
61631 © IEC:2001 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
TEST METHOD FOR THE MECHANICAL STRENGTH
OF CORES MADE OF MAGNETIC OXIDES
FOREWORD

1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization

comprising all national electrotechnical committee (IEC National Committee). 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

preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt

with may participate in this preparatory work. International, governmental and non-governmental organizations

liaising with the IEC also participate in this preparation. The IEC collaborates closely with the International

Organization for Standardization (ISO) in accordance with conditions determined by agreement between the

two organizations.

2) The formal decisions or agreements of the IEC on technical matters express, as nearly as possible, an

international consensus of opinion on the relevant subjects since each technical committee has representation

from all interested National Committees.

3) The documents produced have the form of recommendations for international use and are published in the

form of standards, technical specifications, technical reports or guides and they are accepted by the National

Committees in that sense.

4) In order to promote international unification, IEC National Committees undertake to apply IEC International

Standards transparently to the maximum extent possible in their national and regional standards. Any

divergence between the IEC Standard and the corresponding national or regional standard shall be clearly

indicated in the latter.

5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any

equipment declared to be in conformity with one of its standards.

6) Attention is drawn to the possibility that some of the elements of this International Standard may be the

subject of patent rights. The IEC shall not be responsible for identifying any or all such patent rights.

International Standard IEC 61631 has been prepared by technical committee 51: Magnetic

components and ferrite materials.
This bilingual version (2001-12) replaces the English version.
The text of this standard is based on the following documents:
FDIS Report on voting
51/599/FDIS 51/610/RVD

Full information on the voting for the approval of this standard can be found in the report on

voting indicated in the above table.

This publication has been drafted in accordance with the ISO/IEC Directives, Part 3.

Annex A forms an integral part of this standard.

The committee has decided that the contents of this publication will remain unchanged

until 2005. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
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SIST EN 61631:2002
61631 © IEC:2001 – 7 –
INTRODUCTION

The method specified in this standard is intended to be used for obtaining agreements between

parties for m
...

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