IEC 63182-3:2021

Magnetic powder cores - Guidelines on dimensions and the limits of surface irregularities - Part 3: E-cores

IEC 63182-3:2021 specifies the dimensions that are of importance for mechanical interchangeability for a preferred range of E-cores made of metallic magnetic powder, the essential dimensions of coil formers to be used with them as well as the effective parameter values to be used in calculations involving them, and gives guidelines on allowable limits of surface irregularities applicable to E-cores.
This document is a specification useful in the negotiations between magnetic powder core suppliers and users about surface irregularities.

Noyaux en poudre magnétique - Lignes directrices concernant les dimensions et les limites des irrégularités de surface - Partie 3: Noyaux E

L’IEC 63182-3:2021 spécifie les dimensions qui sont importantes pour l’interchangeabilité mécanique d’une gamme préférentielle de noyaux E en poudre magnétique métallique, ainsi que les dimensions essentielles des supports de bobinages à employer avec ces noyaux E. Elle spécifie également les valeurs des paramètres effectifs à utiliser dans les calculs concernant ces derniers et donne des lignes directrices relatives aux limites admissibles des irrégularités de surface applicables aux noyaux E.
Le présent document est une spécification utile pour les négociations sur les irrégularités de surface entre les fournisseurs et les utilisateurs de noyaux en poudre magnétique.

General Information

• Status: Published
• Publication Date: 15-Dec-2021
• ICS: 29.100.10 - Magnetic components
• Technical Committee: TC 51 - Magnetic components, ferrite and magnetic powder materials
• Drafting Committee: WG 1 - TC 51/WG 1
• Current Stage: PPUB - Publication issued
• Start Date: 14-Jan-2022
• Completion Date: 16-Dec-2021

Standards Content (Sample)

IEC 63182-3 ®
Edition 1.0 2021-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Magnetic powder cores – Guidelines on dimensions and the limits of surface
irregularities –
Part 3: E-cores
Noyaux en poudre magnétique – Lignes directrices concernant les dimensions
et les limites des irrégularités de surface –
Partie 3: Noyaux E
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IEC 63182-3 ®
Edition 1.0 2021-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Magnetic powder cores – Guidelines on dimensions and the limits of surface

irregularities –
Part 3: E-cores
Noyaux en poudre magnétique – Lignes directrices concernant les dimensions

et les limites des irrégularités de surface –

Partie 3: Noyaux E
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.100.10 ISBN 978-2-8322-1061-3

– 2 – IEC 63182-3:2021 © IEC 2021
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Primary dimensions . 5
4.1 General . 5
4.2 Dimensions of E-cores . 6
4.2.1 Main dimensions . 6
4.2.2 Effective parameter and A values . 7
min
4.3 Dimensional limits for coil formers . 8
5 Limits of surface irregularities . 8
5.1 General . 8
5.2 Examples of surface irregularities . 9
5.3 Chips and ragged edges . 9
5.3.1 General . 9
5.3.2 Chips and ragged edges on the mating surfaces . 9
5.3.3 Chips and ragged edges on the other surfaces . 9
5.4 Cracks . 10
5.5 Flash . 11
5.6 Rust . 11
5.7 Discoloration . 11
Annex A (normative) Derived standards . 12

Figure 1 – Main dimensions of E-cores . 6
Figure 2 – Main dimensions of coil formers for E-cores . 8
Figure 3 – Examples of surface irregularities . 9
Figure 4 – Locations of chips and ragged edges for E-cores . 10
Figure 5 – Locations of cracks for E-cores . 10
Figure 6 – Locations of flashes for E-cores . 11
Figure 7 – Rust location for E-cores . 11

Table 1 – Main dimensions of E-cores . 6
Table 2 – Effective parameter and A values . 7
min
Table 3 – Dimensional limits for coil formers for E-cores . 8

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
MAGNETIC POWDER CORES – GUIDELINES ON DIMENSIONS
AND THE LIMITS OF SURFACE IRREGULARITIES –

Part 3: E-cores
FOREWORD
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IEC 63182-3 has been prepared by IEC technical committee 51: Magnetic components, ferrite
and magnetic powder materials. It is an International Standard.
The text of this International Standard is based on the following documents:
Draft Report on voting
51/1397/FDIS 51/1402/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.

– 4 – IEC 63182-3:2021 © IEC 2021
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/standardsdev/publications.
A list of all parts in the IEC 63182 series, published under the general title Magnetic powder
cores – Guidelines on dimensions and the limits of surface irregularities can be found on the
IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will b
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