SIST EN IEC 62631-2-3:2024

SLOVENSKI STANDARD
01-julij-2024
Dielektrične in uporovne lastnosti trdnih izolacijskih materialov - 2-3. del:
Relativna permitivnost in faktor dielektričnih izgub - Metoda kontaktne elektrode
za izolacijske folije - Metode AC (IEC 62631-2-3:2024)
Dielectric and resistive properties of solid insulating materials - Part 2-3: Relative
permittivity and dissipation factor - Contact electrode method for insulating films - AC
methods (IEC 62631-2-3:2024)
Dielektrische und resistive Eigenschaften fester Isolierstoffe - Teil 2-3: Bestimmung der
relativen Permittivität und des dielektrischen Verlustfaktors
(Wechselspannungsverfahren) - Kontaktelektrodenverfahren für Isolierschichten (IEC
62631-2-3:2024)
Propriétés diélectriques et résistives des matériaux isolants solides - Partie 2-3 :
Permittivité relative et facteur de dissipation - Méthode d'électrode de contact pour films
isolants - Méthodes en courant alternatif (IEC 62631-2-3:2024)
Ta slovenski standard je istoveten z: EN IEC 62631-2-3:2024
ICS:
17.220.99 Drugi standardi v zvezi z Other standards related to
elektriko in magnetizmom electricity and magnetism
29.035.01 Izolacijski materiali na Insulating materials in
splošno general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 62631-2-3

NORME EUROPÉENNE
EUROPÄISCHE NORM May 2024
ICS 17.220.99; 29.035.01
English Version
Dielectric and resistive properties of solid insulating materials -
Part 2-3: Relative permittivity and dissipation factor - Contact
electrode method for insulating films - AC methods
(IEC 62631-2-3:2024)
Propriétés diélectriques et résistives des matériaux isolants Dielektrische und resistive Eigenschaften fester Isolierstoffe
solides - Partie 2-3 : Permittivité relative et facteur de - Teil 2-3: Bestimmung der relativen Permittivität und des
dissipation - Méthode d'électrode de contact pour films dielektrischen Verlustfaktors (Wechselspannungsverfahren)
isolants - Méthodes en courant alternatif - Kontaktelektrodenverfahren für Isolierschichten
(IEC 62631-2-3:2024) (IEC 62631-2-3:2024)
This European Standard was approved by CENELEC on 2024-05-10. 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
© 2024 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 62631-2-3:2024 E

European foreword
The text of document 112/631/FDIS, future edition 1 of IEC 62631-2-3, prepared by IEC/TC 112
"Evaluation and qualification of electrical insulating materials and systems" was submitted to the IEC-
CENELEC parallel vote and approved by CENELEC as EN IEC 62631-2-3:2024.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2025-02-10
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2027-05-10
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 62631-2-3:2024 was approved by CENELEC as a
European Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standard indicated:
IEC 62631-2-1:2018 NOTE Approved as EN IEC 62631-2-1:2018 (not modified)
ISO 25178-2 NOTE Approved as EN ISO 25178-2
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
IEC 60674-2 — Specification for plastic films for electrical EN 60674-2 —
purposes - Part 2: Methods of test
ISO 4593 — Plastics - Film and sheeting - — —
Determination of thickness by mechanical
scanning
ISO 14644-1 — Cleanrooms and associated controlled EN ISO 14644-1 —
environments – Part 1: Classification of air
cleanliness by particle concentration
ISO 21920-2 — Geometrical product specifications (GPS) – EN ISO 21920-2 —
Surface texture: Profile – Part 2: Terms,
definitions and surface texture parameters

IEC 62631-2-3 ®
Edition 1.0 2024-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Dielectric and resistive properties of solid insulating materials –

Part 2-3: Relative permittivity and dissipation factor – Contact electrode method

for insulating films – AC methods

Propriétés diélectriques et résistives des matériaux isolants solides –

Partie 2-3 : Permittivité relative et facteur de dissipation – Méthode d'électrode

de contact pour films isolants – Méthodes en courant alternatif

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 17.220.99, 29.035.01 ISBN 978-2-8322-8684-5

– 2 – IEC 62631-2-3:2024 © IEC 2024
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms, definitions, abbreviated terms and symbols . 7
3.1 Terms and definitions . 7
3.2 Abbreviated terms and symbols . 9
4 Principle of method . 10
4.1 Principle of measurement. 10
4.2 Edge effect of electrodes . 11
5 Electrodes . 11
5.1 Design and manufacture of electrodes . 11
5.2 Edge effect of the measuring electrode . 13
6 Samples . 13
7 Measuring voltage . 13
8 Environmental conditions for measurements . 13
9 Measurement of thickness for films . 14
10 Measurement procedure . 14
11 Report . 14
12 Repeatability, reproducibility and replicability . 14
Annex A (normative) Correction method of measured permittivity and dielectric
dissipation factor for a sample with scabrous surfaces . 15
A.1 General . 15
A.2 Physical model . 15
A.3 Relationship between the measured permittivity and the real permittivity . 16
A.4 Relationship between the measured dielectric dissipation factor and the real
dielectric dissipation factor . 21
A.5 Method of correction for the sample with scabrous surfaces . 25
Annex B (informative) Suggestions for the manufacture of electrodes . 26
B.1 General . 26
B.2 Materials . 26
B.3 Manufacture of electrodes . 26
B.4 Evaluation methods of flatness and roughness. 26
B.5 Resistance of the measuring electrode system. 26
Bibliography . 27

Figure 1 – Diagram of the three-electrode system . 12
Figure A.1 – Schematic diagram of the profile including scabrous surfaces of sample
and polished flat electrodes, with the density thickness and apparent thickness
(mechanical thickness) . 15
Figure A.2 – Physical model of the scabrous surfaces of the sample and polished flat
electrodes . 15

IEC 62631-2-3:2024 © IEC 2024 – 3 –
Figure A.3 – Equivalent circuits with the sample, the gap and the electrodes . 16
Figure A.4 – Relationship between the measured permittivity, the real permittivity, the
void ratio and the contact ratio . 21
Figure A.5 – Relationship between the measured dielectric dissipation factor, the real
dielectric dissipation factor, the void ratio and the contact ratio . 25

Table 1 – Dimensional parameters of the three-electrode system and the relationship
between the measured ε for the thickness of sample and the measured capacitance . 12
x
– 4 – IEC 62631-2-3:2024 © IEC 2024
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
DIELECTRIC AND RESISTIVE PROPERTIES OF
SOLID INSULATING MATERIALS –
Part 2-3: Relative permittivity and dissipation factor –
Contact electrode method for insulating films – AC methods

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 t
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