SIST EN IEC 63203-204-2:2025

SLOVENSKI STANDARD
01-junij-2025
Nosljive elektronske naprave in tehnologije - 204-2. del: Elektronski tekstil -
Preskusna metoda za opredelitev spremembe električnega upora pri preskusu
upogibanja kolena in komolca e-tekstila (IEC 63203-204-2:2025)
Wearable electronic devices and technologies - Part 204-2: Electronic textile - Test
method to characterize electrical resistance change in knee and elbow bending test of e-
textiles (IEC 63203-204-2:2025)
Tragbare elektronische Geräte und Technologien - Teil 204-2: Elektronische Textilien -
Prüfverfahren zur Charakterisierung der Änderung des elektrischen Widerstands beim
Knie- und Ellbogenbiegeversuch von E-Textilien (IEC 63203-204-2:2025)
Technologies et dispositifs électroniques prêts-à-porter - Partie 204-2: Textile
électronique - Méthode d'essai pour caractériser la variation de la résistance électrique
lors de l’essai de flexion du genou et du coude des textiles électroniques (IEC 63203-
204-2:2025)
Ta slovenski standard je istoveten z: EN IEC 63203-204-2:2025
ICS:
59.080.80 Inteligentne tekstilije Smart textiles
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 63203-204-2

NORME EUROPÉENNE
EUROPÄISCHE NORM April 2025
ICS 59.080.80; 59.080.01
English Version
Wearable electronic devices and technologies - Part 204-2:
Electronic textile - Test method to characterize electrical
resistance change in knee and elbow bending test of e-textiles
(IEC 63203-204-2:2025)
Technologies et dispositifs électroniques prêts-à-porter - Tragbare elektronische Geräte und Technologien -
Partie 204-2: Textile électronique - Méthode d'essai pour Teil 204-2: Elektronische Textilien - Prüfverfahren zur
caractériser la variation de la résistance électrique lors de Charakterisierung der Änderung des elektrischen
l'essai de flexion du genou et du coude des textiles Widerstands beim Knie- und Ellbogenbiegeversuch von
électroniques E-Textilien
(IEC 63203-204-2:2025) (IEC 63203-204-2:2025)
This European Standard was approved by CENELEC on 2025-03-21. 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,
Türkiye 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
© 2025 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 63203-204-2:2025 E

European foreword
The text of document 124/299/FDIS, future edition 1 of IEC 63203-204-2, prepared by TC 124
"Wearable electronic devices and technologies" was submitted to the IEC-CENELEC parallel vote and
approved by CENELEC as EN IEC 63203-204-2:2025.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2026-04-30
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2028-04-30
document have to be withdrawn
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 63203-204-2:2025 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 63203-101-1 NOTE Approved as EN IEC 63203-101-1
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.cencenelec.eu.
Publication Year Title EN/HD Year
ISO 139 - Textiles - Standard atmospheres for EN ISO 139 -
conditioning and testing
ISO 5084 - Textiles - Determination of thickness of EN ISO 5084 -
textiles and textile products
- - Textiles and textile products - Electrically EN 16812 2016
conductive textiles - Determination of the
linear electrical resistance of conductive
tracks
IEC 63203-204-2 ®
Edition 1.0 2025-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Wearable electronic devices and technologies –
Part 204-2: Electronic textile – Test method to characterize electrical resistance
change in knee and elbow bending test of e-textiles
Technologies et dispositifs électroniques prêts-à-porter –
Partie 204-2: Textile électronique – Méthode d'essai pour caractériser la
variation de la résistance électrique lors de l’essai de flexion du genou et du
coude des textiles électroniques
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 59.080.80, 59.080.01 ISBN 978-2-8327-0158-4
– 2 – IEC 63203-204-2:2025 © IEC 2025
CONTENTS
FOREWORD. 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Environmental conditions . 7
5 Test specimen preparation . 7
5.1 General . 7
5.2 Size of test specimen . 7
6 Testing method and test apparatus . 7
6.1 General . 7
6.2 Test apparatus . 8
6.2.1 General . 8
6.2.2 Preparation of e-textile specimens made with conductive fibre and
fabric . 9
6.2.3 Preparation of e-textile specimens with strip-type devices . 10
6.3 Test procedure . 10
6.4 Measurement . 11
6.5 Determination of the electrical properties . 11
6.5.1 General . 11
6.5.2 Linear resistance of e-textile with conductive yarn . 11
6.5.3 Average, standard deviation, and effective variation of resistance . 12
7 Test report . 13
Annex A (informative) Example of test results . 14
A.1 Knitted e-textile specimen . 14
A.2 Measurement example . 14
A.3 Measurement example . 15
A.4 Measurement example . 16
A.5 Measurement . 17
A.6 Conductive e-textile . 18
Annex B (informative) Strain along the bending . 19
Annex C (informative) Example of bending machine . 20
Annex D (normative) Specimen holder . 21
Annex E (informative) Preparation of e-textile test specimen . 23
Annex F (informative) Specimen holder separated from a dynamic bending machine . 25
Bibliography . 26

Figure 1 – Schematic diagram of specimen holder and specimen fixation . 8
Figure 2 – Apparatus for bending test . 8
Figure 3 – Example of bending test using apparatus . 9
Figure 4 – Embedded e-textile in the specimen. 9
Figure 5 – Strip-type device attached to specimen . 10
Figure 6 – Example of a graph of resistance variation from a bending test . 12
Figure A.1 – Part of knitted e-textile and schematic of bent specimen holder loaded
with the sleeve-type e-textile. . 14
Figure A.2 – Real-time measurement of resistance of knitted e-textile at 10 cpm . 15

IEC 63203-204-2:2025 © IEC 2025 – 3 –
Figure A.3 – Real-time measurement of resistance of knitted e-textile at 30 cpm . 16
Figure A.4 – Real-time measurement of resistance of knitted e-textile at 30 cpm . 16
Figure A.5 – Real-time measured change value of resistance of knitted e-textile
sensor at 50 cpm . 17
Figure A.6 – Real-time measured change value of resistance of electrical

interconnection using conductive e-textile embedded in fabric . 18
Figure B.1 – Bending strain between grips . 19
Figure D.1 – Blueprint of specimen holder at top . 21
Figure D.2 – Blueprint of specimen holder at front . 21
Figure D.3 – Blueprint of specimen holder at side . 22
Figure D.4 – Three-dimensional picture of the specimen holder . 22
Figure E.1 – E-textile test specimen before sewing . 23
Figure E.2 – E-textile test specimen after sewing . 23
Figure E.3 – Specimen holder covered with silicone . 24
Figure E.4 – E-textile loaded on a specimen holder covered with silicone . 24

Table 1 – List of the size of the specimen . 7
Table 2 – Combination of parameters for measurement . 10
Table 3 – Categories of number of bending cycles . 11
Table D.1 – Length of blueprint of specimen holder at top . 21
Table D.2 – Length of blueprint of specimen holder at front . 22
Table D.3 – Length of blueprint of specimen holder at side . 22
Table E.1 – Length of e-textile test specimen . 23

– 4 – IEC 63203-204-2:2025 © IEC 2025
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
WEARABLE ELECTRONIC DEVICES AND TECHNOLOGIES –

Part 204-2: Electronic textile – Test method to characterize electrical
resistance change in knee and elbow bending test of e-textiles

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) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). IEC takes no position concerning the evidence, validity or applicability of any claimed patent rights in
respect thereof. As of the date of publication of this document, IEC had not received notice of (a) patent(s), which
may be required to implement this document. However, implementers are cautioned that this may not represent
the latest information, which may be obtained from the patent database available at https://patents.iec.ch. IEC
shall not be held responsible for identifying any or all such patent rights.
IEC 63203-204-2 has been prepared by IEC technical committee 124: Wearable electronic
devices and technologies. It is an International Standard.
The text of this International Standard is based on the following documents:
Draft Report on voting
124/299/FDIS 124/306/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.

IEC 63203-204-2:2025 © IEC 2025 – 5 –
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/publications.
A list of all parts in the IEC 63203 series, published under the general title Wearable electronic
devices and technologies, 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, or
• revised.
– 6 – IEC 63203-204-2:2025 © IEC 2025
WEARABLE ELECTRONIC DEVICES AND TECHNOLOGIES –

Part 204-2: Electronic textile – Test method to characterize electrical
resistance change in knee and elbow bending test of e-textiles

1 Scope
This part of IEC 63203 specifies a test method for e-textiles for measuring the change of
electrical resistance during bending of the knee and elbow joints. It uses a dynamic method.
This document is applicable to e-textiles.
2 Normative references
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.
ISO 139, Textiles – Standard atmospheres for conditioning and testing
ISO 5084, Textiles – Determination of thickness of textiles and textile products
EN 16812:2016, Textiles and textile products. Electrically conductive textiles. Determination of
the linear electrical resistance of conductive tracks
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following
addresses:
• IEC Electropedia: available at https://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp
3.1
electrode
contact between the measurement wire and the specimen
[SOURCE: EN 16812:2016, 3.5]
3.2
bending rate
number of bending cycles per minute, with one cycle comprising one bending/unbending
Note 1 to entry: The bending rate is expressed in cpm (cycles per minute).

IEC 63203-204-2:2025 © IEC 2025 – 7 –
3.3
R
L
linear electrical resistance
electrical resistance per unit length of a track
Note 1 to entry: Linear electrical resistance is expressed in Ω/m (ohms per metre).
[SOURCE: EN 16812:2016, 3.3, modified – Note 1 to entry has been added.]
4 Environmental conditions
Standard atmospheric conditions for measurement shall apply, as
...