EN IEC 60404-11:2021

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

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

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.
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)
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

– 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

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;
– 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 th
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