Ferrite cores - Guidelines on dimensions and the limits of surface irregularities - Part 7: EER-cores

This part of IEC 63093 specifies the dimensions that are of importance for mechanical
interchangeability for a preferred range of EER-cores made of ferrite, the essential
dimensions of coil formers to be used with them as well the effective parameter values to be
used in calculations involving them, and gives guidelines on allowable limits of surface
irregularities applicable to EER-cores.
This document is a specification useful in the negotiations between ferrite core manufacturers
and customers about surface irregularities.
The use of “derived” standards which give more detailed specifications of component parts
while still permitting compliance with this document is discussed in Annex A.

Ferritkerne - Richtlinien zu Maßen und Grenzen von Oberflächenbeschädigungen - Teil 7: EER-Kerne

Noyaux de ferrite - Lignes directrices concernant les dimensions et les limites des irrégularités de surface - Partie 7 : Noyaux EER

Feritna jedra - Smernice o merah in mejnih vrednostih površinskih nepravilnosti - 7. del: EER- jedra

Ta del standarda IEC 63093 določa mere, ki so pomembne za mehansko medsebojno zamenljivost prednostnega razpona EER-jeder, izdelanih iz ferita, bistvene mere tuljave, ki se uporablja s temi jedri, in vrednosti efektivnih parametrov, ki se uporabljajo pri izračunih, povezanih z temi jedri, ter podaja smernice o dovoljenih mejnih vrednostih površinskih nepravilnosti, ki se uporabljajo za EER-jedra.
Ta dokument je specifikacija, uporabna za sklepanje dogovorov o površinskih nepravilnostih med proizvajalci feritnih jeder in strankami.
Uporaba »izpeljanih« standardov, ki podajajo podrobnejše specifikacije o delih komponent in hkrati dovoljujejo skladnost s tem standardom, je obravnavana v dodatku A.

General Information

Status
Published
Publication Date
06-Sep-2018
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
27-Jul-2018
Due Date
01-Oct-2018
Completion Date
07-Sep-2018

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Feritna jedra - Smernice o merah in mejnih vrednostih površinskih nepravilnosti - 7. del: EER- jedraFerrite cores - Guidelines on dimensions and the limits of surface irregularities - Part 7: EER-cores29.100.10Magnetne komponenteMagnetic componentsICS:Ta slovenski standard je istoveten z:EN IEC 63093-7:2018SIST EN IEC 63093-7:2018en01-oktober-2018SIST EN IEC 63093-7:2018SLOVENSKI

STANDARD
SIST EN IEC 63093-7:2018
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN IEC 63093-7
May 2018 ICS 29.100.10
English Version

Ferrite cores - Guidelines on dimensions and the limits of surface irregularities - Part 7: EER-cores (IEC 63093-7:2018)

Noyaux de ferrite - Lignes directrices concernant les dimensions et les limites des irrégularités de surface - Partie 7 : Noyaux EER (IEC 63093-7:2018)

Ferritkerne - Richtlinien zu Maßen und Grenzen von Oberflächenbeschädigungen - Teil 7: EER-Kerne (IEC 63093-7:2018) This European Standard was approved by CENELEC on 2018-04-26. 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 CEN-CENELEC Management Centre 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 CEN-CENELEC Management Centre has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization

Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung CEN-CENELEC Management Centre: Rue de la Science 23,

B-1040 Brussels © 2018 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN IEC 63093-7:2018 E SIST EN IEC 63093-7:2018
EN IEC 63093-7:2018 (E)

European foreword The text of document 51/1217/FDIS, future edition 1 of IEC 63093-7, prepared by IEC/TC 51 "Magnetic components, ferrite and magnetic powder materials" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN IEC 63093-7:2018.

The following dates are fixed: • latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2019-01-26 • latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2021-04-26

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

Endorsement notice The text of the International Standard IEC 63093-7:2018 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following note has to be added for the standard indicated :

IEC 60424-3:2015 NOTE Harmonized as EN 60424-3:2016 (not modified).
SIST EN IEC 63093-7:2018
EN IEC 63093-7:2018 (E)
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following documents are referred to in the text in such a way that some or all of their content constitutes requirements 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 1

Where an International Publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies.

NOTE 2

Up-to-date information on the latest versions of the European Standards listed in this annex is available here: www.cenelec.eu.

Publication Year Title EN/HD Year IEC 60205 -
Calculation of the effective parameters of magnetic piece parts EN 60205 -
IEC 60401-1 -

Terms and nomenclature for cores made of magnetically soft ferrites -- Part 1: Terms used for physical irregularities EN 60401-1 -

IEC 60424-1 -

Ferrite cores - Guidelines on the limits of surface irregularities - Part 1: General Specification EN 60424-1 -

SIST EN IEC 63093-7:2018
SIST EN IEC 63093-7:2018
IEC 63093-7 Edition 1.0 2018-03 INTERNATIONAL STANDARD
Ferrite cores – Guidelines on dimensions and the limits of surface
irregularities –
Part 7: EER-cores
INTERNATIONAL ELECTROTECHNICAL COMMISSION
ICS 29.100.10
ISBN 978-2-8322-5485-1
® Registered trademark of the International Electrotechnical Commission ®

Warning! Make sure that you obtained this publication from an authorized distributor. SIST EN IEC 63093-7:2018

– 2 – IEC 63093-7:2018 © IEC 2018 CONTENTS FOREWORD ........................................................................................................................... 4 1 Scope .............................................................................................................................. 6 2 Normative references ...................................................................................................... 6 3 Terms and definitions ...................................................................................................... 6 4 Primary dimensions ......................................................................................................... 6 4.1 General ................................................................................................................... 6 4.2 Dimensions of EER-cores ....................................................................................... 7 4.2.1 Principal dimensions ...................................................................................... 7 4.2.2 Effective parameter and Amin values ............................................................. 8 4.3 Dimensional limits for coil formers........................................................................... 8 5 Limits of surface irregularities .......................................................................................... 9 5.1 General ................................................................................................................... 9 5.2 Chips and ragged edges ....................................................................................... 10 5.2.1 General........................................................................................................ 10 5.2.2 Chips and ragged edges on the mating surfaces (see Figure 4) ................... 10 5.2.3 Chips and ragged edges on the other surfaces (see Figure 4) ..................... 10 5.3 Cracks .................................................................................................................. 12 5.4 Flash .................................................................................................................... 12 5.5 Pull-outs ............................................................................................................... 12 5.6 Crystallites ............................................................................................................ 13 5.7 Pores .................................................................................................................... 14 Annex A (normative)

Derived standards ............................................................................... 15 Annex B (normative)

Example of dimensions for gauges to check the dimensions of EER-cores meeting this primary standard ............................................................................. 16 B.1 General ................................................................................................................. 16 B.2 Procedure and requirements ................................................................................. 16 Annex C (informative)

Examples of allowable areas of chips ................................................ 17 Bibliography .......................................................................................................................... 18

Figure 1 – Dimensions of EER-cores ...................................................................................... 7 Figure 2 – Essential dimensions of coil formers ...................................................................... 8 Figure 3 – Examples of surface irregularities .......................................................................... 9 Figure 4 – Chip locations for EER-cores ............................................................................... 10 Figure 5 – Cracks and pull-out locations for EER-cores ........................................................ 12 Figure 6 – Crystallite location for EER-cores ......................................................................... 13 Figure 7 – Pore location for EER-cores ................................................................................. 14 Figure B.1 – Gauge dimensions ............................................................................................ 16

Table 1 – Dimensions of EER-cores ........................................................................................ 7 Table 2 – Effective parameter values of EER-cores ................................................................ 8 SIST EN IEC 63093-7:2018

IEC 63093-7:2018 © IEC 2018 – 3 –

Table 3 – Dimensional limits for coil formers ........................................................................... 9 Table 4 – Area and length reference for visual inspection ..................................................... 11 Table 5 – Limits for cracks .................................................................................................... 13 Table B.1 – Gauge dimensions ............................................................................................. 16 Table C.1 – Allowable areas of chips for EER-cores ............................................................. 17

SIST EN IEC 63093-7:2018

– 4 – IEC 63093-7:2018 © IEC 2018 INTERNATIONAL ELECTROTECHNICAL COMMISSION ____________

FERRITE CORES – GUIDELINES ON DIMENSIONS AND
THE LIMITS OF SURFACE IRREGULARITIES –
Part 7: EER-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 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 itself does not provide any attestation of conformity. Independent certification bodies provide conformity assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any services carried out by independent certification bodies. 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 Stan

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