Ferrite cores - Dimensions -- Part 8: E-cores

This part of IEC 62317 specifies the dimensions that are of importance for mechanical interchangeability for E-cores with rectangular cross-section made of ferrite, the dimensions of coil formers to be used with them, and the effective parameter values to be used in calculations involving them. The selecting core sizes to this standard is based on the philosophy of including those sizes, which are industrial standards, either by inclusion in national standards, or by broad-based use in industry. See IEC 62317-1 for more detail concerning the philosophy of selecting core sizes to be included.

Ferritkerne - Maße - Teil 8: E-Kerne

Noyaux ferrites - Dimensions -- Partie 8: Noyaux E

Feritna jedra – Mere – 8. del: E-jedra (IEC 62317-8:2006)

General Information

Status
Published
Publication Date
16-Jul-2007
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
25-May-2007
Due Date
30-Jul-2007
Completion Date
30-May-2007

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SLOVENSKI STANDARD
SIST EN 62317-8:2007
01-september-2007
1DGRPHãþD
SIST EN 62358:2005
Feritna jedra – Mere – 8. del: E-jedra (IEC 62317-8:2006)
Ferrite cores - Dimensions -- Part 8: E-cores (IEC 62317-8:2006)
Ferritkerne - Maße - Teil 8: E-Kerne (IEC 62317-8:2006)
Noyaux ferrites - Dimensions -- Partie 8: Noyaux E (IEC 62317-8:2006)
Ta slovenski standard je istoveten z: EN 62317-8:2006
ICS:
29.100.10 Magnetne komponente Magnetic components
SIST EN 62317-8:2007 en,de

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

---------------------- Page: 1 ----------------------
EUROPEAN STANDARD
EN 62317-8
NORME EUROPÉENNE
November 2006
EUROPÄISCHE NORM
ICS 29.100.10 Partly supersedes EN 62358:2004
English version
Ferrite cores -
Dimensions
Part 8: E-cores
(IEC 62317-8:2006)
Noyaux ferrites - Ferritkerne -
Dimensions Maße
Partie 8: Noyaux E Teil 8: E-Kerne
(CEI 62317-8:2006) (IEC 62317-8:2006)

This European Standard was approved by CENELEC on 2006-10-01. 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 two official versions (English and 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, Cyprus, the Czech

Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,

Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,

Sweden, Switzerland and the 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

© 2006 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 62317-8:2006 E
---------------------- Page: 2 ----------------------
EN 62317-8:2006 - 2 -
Foreword

The text of document 51/864/FDIS, future edition 1 of IEC 62317-8, 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 62317-8 on 2006-10-01.

This standard replaces Table A.1 and Table B.1 of EN 62358:2004. New rectangular centre leg E-cores,

which have been developed in the industry, were introduced in EN 62358, and are in widespread use.

This standard has been revised to specify dimensions and effective parameters for these newer

rectangular centre leg E-cores.
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) 2007-07-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2009-10-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice

The text of the International Standard IEC 62317-8:2006 was approved by CENELEC as a European

Standard without any modification.
__________
---------------------- Page: 3 ----------------------
- 3 - EN 62317-8:2006
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following referenced documents are indispensable for the application of this document. For dated

references, only the edition cited applies. For undated references, the latest edition of the referenced

document (including any amendments) applies.

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 60205 2006 Calculation of the effective parameters of EN 60205 2006
magnetic piece parts
---------------------- Page: 4 ----------------------
INTERNATIONAL IEC
STANDARD 62317-8
First edition
2006-08
Ferrite cores – Dimensions –
Part 8:
E-cores
 IEC 2006  Copyright - all rights reserved

No part of this publication may be reproduced or utilized in any form or by any means, electronic or

mechanical, including photocopying and microfilm, without permission in writing from the publisher.

International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland

Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch

PRICE CODE
Commission Electrotechnique Internationale P
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
For price, see current catalogue
---------------------- Page: 5 ----------------------
– 2 – 62317-8  IEC:2006(E)
CONTENTS

FOREWORD...........................................................................................................................3

1 Scope...............................................................................................................................5

2 Normative references .......................................................................................................5

3 Primary standards ............................................................................................................5

3.1 Dimensions of E-cores with rectangular cross-section .............................................5

3.2 Dimensional limits for coil formers .........................................................................10

Annex A (normative) Derived standards ...............................................................................12

Annex B (normative) An example of a gauge to check the dimensions of E-cores

meeting the IEC primary standard.........................................................................................13

Figure 1 – Dimensions of E-cores with rectangular cross-section............................................6

Figure 2 – Main dimensions of coil formers ...........................................................................10

Figure B.1 – Gauge dimensions ............................................................................................13

Table 1 – Dimensions of E-cores with rectangular cross-section .............................................6

Table 2 – Effective parameter and A values .......................................................................8

min

Table 3 – Main dimensions of coil formers ............................................................................10

Table B.1 – Gauge dimensions .............................................................................................14

---------------------- Page: 6 ----------------------
62317-8  IEC:2006(E) – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FERRITE CORES – DIMENSIONS –
Part 8: E-cores
FOREWORD

1) The International Electrotechnical Commission (IEC) 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, IEC publishes International Standards. Technical Specifications,

Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC

Publication(s)“). 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. 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 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 IEC National Committees.

3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

misinterpretation by any end user.

4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

transparently to the maximum extent possible in their national and regional publications. Any divergence

between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in

the latter.

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

equipment declared to be in conformity with an IEC Publication.

6) All users should ensure that they have the latest edition of this publication.

7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and

members of its technical committees and IEC National Committees for any personal injury, property damage or

other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and

expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC

Publications.

8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

indispensable for the correct application of this publication.

9) Attention is drawn to the possibility that some of the elements of this IEC publication may be the subject of

patent rights. IEC shall not be held responsible for identifying any or all such patent rights.

International Standard IEC 62317-8 has been prepared IEC technical committee 51: Magnetic

components and ferrite materials.

This standard cancels and replaces IEC 61246 published in 1994, its amendment 1 (2002)

and replaces Table A.1 and Table B.1 of IEC 62358:2004. New rectangular centre leg E-cores,

which have been developed in the industry, were introduced in IEC 62358, and are in

widespread use. This standard has been revised to specify dimensions and effective

parameters for these newer rectangular centre leg E-cores.
The text of this standard is based on the following documents:
FDIS Report on voting
51/864/FDIS 51/872/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.
---------------------- Page: 7 ----------------------
– 4 – 62317-8  IEC:2006(E)

This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

IEC 62317 consists of the following parts, under the general title Ferrite cores – Dimensions:

Part 1: General specification (under consideration)

Part 2: Pot cores (under consideration, currently available as IEC 60133: Dimensions of

pot-cores made of magnetic oxides and associated parts)

Part 3: Half pot cores (under consideration, currently available as IEC 62323: Dimensions

of half pot-cores made of ferrite for inductive proximity switches)
Part 4: RM-cores and associated parts

Part 5: EP-cores (under consideration, currently available as IEC 61596: Magnetic oxide

EP-cores and associated parts for use in inductors and transformers – Dimensions)

Part 6: ETD-cores (under consideration, currently available as IEC 61185: Ferrite cores

(ETD-cores) intended for use in power supply applications – Dimensions)
Part 7: EER-cores
Part 8: E-cores
Part 9: Planar cores

Part 10: PM-cores (under consideration, currently available as IEC 61247: PM-cores made

of magnetic oxides and associated parts – Dimensions)

Part 11: EC-cores (under consideration, currently available as IEC 60647: Dimensions for

magnetic oxide cores intended for use in power supplies (EC-cores))

Part 12: Uncoated ring cores (under consideration, currently available as IEC TR 61604:

Dimensions of uncoated ring cores of magnetic oxides)
Part 13: PQ-cores (under consideration)

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

the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in

the data related to the specific publication. At this date, the publication will be

• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.
---------------------- Page: 8 ----------------------
62317-8  IEC:2006(E) – 5 –
FERRITE CORES – DIMENSIONS –
Part 8: E-cores
1 Scope

This part of IEC 62317 specifies the dimensions that are of importance for mechanical

interchangeability for E-cores with rectangular cross-section made of ferrite, the dimensions

of coil formers to be used with them, and the effective parameter values to be used in

calculations involving them.

The selecting core sizes to this standard is based on the philosophy of including those sizes,

which are industrial standards, either by inclusion in national standards, or by broad-based

use in industry. See IEC 62317-1 for more detail concerning the philosophy of selecting core

sizes to be included.

NOTE Cores covered by this standard are intended for general applications at both low and high flux densities,

but they also find uses in special applications such as pulse transformers. They are generally used in pairs.

Whilst the main application of this standard is expected to be for ferrite cores, its validity for iron powder cores

should not be overlooked.

Coil formers are not specified for E-cores smaller than E 8/2, which are also used in SMD assemblies.

The use of “derived” standards, which give a more detailed specification of component parts

whilst still permitting compliance with this standard, is discussed in Annex A.
2 Normative references

The following referenced documents are indispensable for the application of this document.

For dated references, only the edition cited applies. For undated references, the latest edition

of the referenced document (including any amendments) applies.
IEC 60205:2006, Calculation of the effective parameters of magnetic piece parts
3 Primary standards

Compliance with the following requirements ensures mechanical interchangeability of

complete assemblies and coil formers.
3.1 Dimensions of E-cores with rectangular cross-section
3.1.1 Main dimensions

The main dimensions of E-cores with rectangular cross-section shall be as given in Table 1.

NOTE The dimensions of the cores may be checked by means of gauges, an example of which is given in Annex

B. In order to facilitate production it may be necessary to use gauges having dimensions differing from those given

in Annex B, although no relaxation of the requirements for the dimensions of the cores given in Table 1 is thereby

permitted.
3.1.2 Effective parameter and A values
min

The effective parameter and A values of a pair of cores whose dimensions comply with

min
3.1.1 shall be as given in Table 2 (see IEC 60205, for the definitio
...

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