Magnetic materials - Part 11: Methods of measurement of the surface insulation resistance of electrical steel strip and sheet (IEC 60404-11:2021)

This part of IEC 60404 is applicable to electrical steel strip and sheet insulated by coating on one or both surfaces.
The object of this document is to define the general principles and technical details of the measurement of the surface insulation resistance of electrical steel strip and sheet.
NOTE This test is suitable for manufacturing and quality control in the application of insulation coatings.

Magnetische Werkstoffe – Teil 11: Methoden zur Messung des Oberflächenisolationswiderstands von Elektrostahlbändern und -blechen (IEC 60404-11:2021)

Matériaux magnétiques - Partie 11: Méthodes de mesurage de la résistance d'isolement superficiel des bandes et tôles en acier électrique (IEC 60404-11:2021)

L'IEC 60404-11:2021 s'applique aux bandes et tôles en acier électrique isolées par un revêtement sur une seule face ou sur les deux faces. Le présent document a pour objet de définir les principes généraux et les éléments techniques pour le mesurage de la résistance d'isolement superficiel des bandes et tôles en acier électrique. NOTE Cet essai convient à la fabrication et au contrôle de la qualité dans l'application des revêtements isolants. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:  la Méthode B a été supprimée, et la Méthode A permet de mesurer les courants qui traversent chaque touche de contact; un montage amélioré, "Montage B", a été ajouté pour l'appareillage d'essai et le circuit de stabilisation de tension de la Méthode A; une variante de montage, qui utilise deux paires d'ensembles de contacts situés en position opposée à l'éprouvette, a été introduite; la restriction "Une même portion de l'éprouvette ne doit pas être utilisée pour caractériser les deux faces" a été supprimée.

Magnetni materiali - 11. del: Metode za merjenje površinske izolacijske upornosti električnih jeklenih trakov in pločevine (IEC 60404-11:2021)

General Information

Status
Published
Publication Date
07-Sep-2021
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
03-Sep-2021
Due Date
08-Nov-2021
Completion Date
08-Sep-2021

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SLOVENSKI STANDARD
SIST EN IEC 60404-11:2021
01-november-2021
Nadomešča:
SIST EN 60404-11:2013

Magnetni materiali - 11. del: Metode za merjenje površinske izolacijske upornosti

električnih jeklenih trakov in pločevine (IEC 60404-11:2021)
Magnetic materials - Part 11: Methods of measurement of the surface insulation
resistance of electrical steel strip and sheet (IEC 60404-11:2021)
Magnetische Werkstoffe – Teil 11: Methoden zur Messung des

Oberflächenisolationswiderstands von Elektrostahlbändern und -blechen (IEC 60404-

11:2021)

Matériaux magnétiques - Partie 11: Méthodes de mesurage de la résistance d'isolement

superficiel des bandes et tôles en acier électrique (IEC 60404-11:2021)
Ta slovenski standard je istoveten z: EN IEC 60404-11:2021
ICS:
17.220.20 Merjenje električnih in Measurement of electrical
magnetnih veličin and magnetic quantities
29.030 Magnetni materiali Magnetic materials
SIST EN IEC 60404-11:2021 en

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

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SIST EN IEC 60404-11:2021
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SIST EN IEC 60404-11:2021
EUROPEAN STANDARD EN IEC 60404-11
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2021
ICS 29.030; 17.220.01 Supersedes EN 60404-11:2013 and all of its
amendments and corrigenda (if any)
English Version
Magnetic materials - Part 11: Methods of measurement of the
surface insulation resistance of electrical steel strip and sheet
(IEC 60404-11:2021)

Matériaux magnétiques - Partie 11: Méthodes de mesurage Magnetische Werkstoffe - Teil 11: Methoden zur Messung

de la résistance d'isolement superficiel des bandes et tôles des Oberflächenisolationswiderstands von

en acier électrique Elektrostahlbändern und -blechen
(IEC 60404-11:2021) (IEC 60404-11:2021)

This European Standard was approved by CENELEC on 2021-08-12. 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the

Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, 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

© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN IEC 60404-11:2021 E
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SIST EN IEC 60404-11:2021
EN IEC 60404-11:2021 (E)
European foreword

The text of document 68/665/CDV, future edition 2 of IEC 60404-11, prepared by IEC/TC 68

“Magnetic alloys and steels” was submitted to the IEC-CENELEC parallel vote and approved by

CENELEC as EN IEC 60404-11:2021.
The following dates are fixed:

• latest date by which the document has to be implemented at national (dop) 2022–05–12

level by publication of an identical national standard or by endorsement

• latest date by which the national standards conflicting with the (dow) 2024–08–12

document have to be withdrawn

This document supersedes EN 60404-11:2013 and all of its amendments and corrigenda (if any).

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.

Any feedback and questions on this document should be directed to the users’ national committee. A

complete listing of these bodies can be found on the CENELEC website.
Endorsement notice

The text of the International Standard IEC 60404-11:2021 was approved by CENELEC as a European

Standard without any modification.
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SIST EN IEC 60404-11:2021
EN IEC 60404-11:2021 (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
ISO/IEC Guide 98-3 - Uncertainty of measurement - Part 3: - -
Guide to the expression of uncertainty in
measurement (GUM:1995)
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SIST EN IEC 60404-11:2021
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SIST EN IEC 60404-11:2021
IEC 60404-11
Edition 2.0 2021-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Magnetic materials –
Part 11: Methods of measurement of the surface insulation resistance of
electrical steel strip and sheet
Matériaux magnétiques –
Partie 11: Méthodes de mesurage de la résistance d'isolement superficiel des
bandes et tôles en acier électrique
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 17.220.01; 29.030 ISBN 978-2-8322-9942-5

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
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SIST EN IEC 60404-11:2021
– 2 – IEC 60404-11:2021 © IEC 2021
CONTENTS

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

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

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

3 Terms and definitions ...................................................................................................... 5

4 Principle of measurement ................................................................................................ 5

5 Test specimen ................................................................................................................. 7

6 Test apparatus ................................................................................................................ 8

6.1 Contact assembly ................................................................................................... 8

6.2 Power supply .......................................................................................................... 8

6.3 Current measurement ............................................................................................. 8

6.4 Applied force........................................................................................................... 8

7 Verification ...................................................................................................................... 9

8 Measurement procedure .................................................................................................. 9

9 Evaluation of surface insulation resistance .................................................................... 10

10 Uncertainty .................................................................................................................... 10

11 Test report ..................................................................................................................... 11

Bibliography .......................................................................................................................... 12

Figure 1 – Fundamental arrangement of the test apparatus (schematic) ................................. 6

Figure 2 – Schematic arrangements of the test apparatus and the voltage stabilizing

circuit ...................................................................................................................................... 6

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SIST EN IEC 60404-11:2021
IEC 60404-11:2021 © IEC 2021 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
MAGNETIC MATERIALS –
Part 11: Methods of measurement of the surface
insulation resistance of electrical steel strip and sheet
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.

IEC 60404-11 has been prepared by IEC technical committee 68: Magnetic alloys and steels.

It is an International Standard.

This second edition cancels and replaces the first edition published in 1991, Amendment 1:1998

and Amendment 2:2012. This edition constitutes a technical revision.

This edition includes the following significant technical changes with respect to the previous

edition:

a) Method B has been deleted and the measurement of individual currents through each

contact button is enabled by Method A;

b) an improved arrangement of the test apparatus and the voltage stabilizing circuit for

Method A, “Arrangement B”, is introduced.

c) an alternative layout using two pairs of contact assemblies in opposing position of the test

specimen is introduced;
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SIST EN IEC 60404-11:2021
– 4 – IEC 60404-11:2021 © IEC 2021

d) the restriction: “The same area of the test specimen shall not be used to test both sides.”

has been deleted.
The text of this International Standard is based on the following documents:
CDV Report on voting
68/665/CDV 68/681/RVC

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.

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 60404 series, published under the general title Magnetic materials,

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 be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
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SIST EN IEC 60404-11:2021
IEC 60404-11:2021 © IEC 2021 – 5 –
MAGNETIC MATERIALS –
Part 11: Methods of measurement of the surface
insulation resistance of electrical steel strip and sheet
1 Scope

This part of IEC 60404 is applicable to electrical steel strip and sheet insulated by coating on

one or both sides.

The object of this document is to define the general principles and technical details of the

measurement of the surface insulation resistance of electrical steel strip and sheet.

NOTE This test is suitable for manufacturing and quality control in the application of insulation coatings.

2 Normative references
The following docu
...

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