EN IEC 62631-2-2:2022

SLOVENSKI STANDARD
01-julij-2022
Dielektrične in uporovne lastnosti trdnih izolacijskih materialov - 2-2. del:
Relativna permitivnost in faktor izgube - Visoke frekvence (1 MHz do 300 MHz) -
Metode AC (IEC 62631-2-2:2022)
Dielectric and resistive properties of solid insulating materials - Part 2-2: Relative
permittivity and dissipation factor - High frequencies (1 MHz to 300 MHz) - AC methods
(IEC 62631-2-2:2022)
Dielektrische und resistive Eigenschaften fester Elektroisolierstoffe - Teil 2-2: Relative
Permittivität und Verlustfaktor - Hohe Frequenzen ( 1 MZ bis 300 MHz) -
Wechselspannungsverfahren (IEC 62631-2-2:2022)
Propriétés diélectriques et résistives des matériaux isolants solides - Partie 2-2:
Permittivité relative et facteur de dissipation diélectrique - Hautes fréquences (1 MHz à
300 MHz) - Méthodes en courant alternatif (IEC 62631-2-2:2022)
Ta slovenski standard je istoveten z: EN IEC 62631-2-2:2022
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 62631-2-2

NORME EUROPÉENNE
EUROPÄISCHE NORM May 2022
ICS 17.220.99; 29.035.01
English Version
Dielectric and resistive properties of solid insulating materials -
Part 2-2: Relative permittivity and dissipation factor - High
frequencies (1 MHz to 300 MHz) - AC methods
(IEC 62631-2-2:2022)
Propriétés diélectriques et résistives des matériaux isolants Dielektrische und resistive Eigenschaften fester
solides - Partie 2-2: Permittivité relative et facteur de Elektroisolierstoffe - Teil 2-2: Relative Permittivität und
dissipation - Hautes fréquences (1 MHz à 300 MHz) - Verlustfaktor - Hohe Frequenzen ( 1 MZ bis 300 MHz) -
Méthodes en courant alternatif Wechselspannungsverfahren
(IEC 62631-2-2:2022) (IEC 62631-2-2:2022)
This European Standard was approved by CENELEC on 2022-05-12. 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
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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
© 2022 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 62631-2-2:2022 E

European foreword
The text of document 112/562/FDIS, future edition 1 of IEC 62631-2-2, 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 62631-2-2:2022.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2023-02-12
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2025-05-12
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 62631-2-2:2022 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 standards
indicated:
IEC 60247 NOTE Harmonized as EN 60247
IEC 62631-2-1:2018 NOTE Harmonized as EN IEC 62631-2-1:2018 (not modified)
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
IEC 60212 - Standard conditions for use prior to and EN 60212 -
during the testing of solid electrical
insulating materials
IEC 62631-2-2 ®
Edition 1.0 2022-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Dielectric and resistive properties of solid insulating materials –

Part 2-2: Relative permittivity and dissipation factor – High frequencies

(1 MHz to 300 MHz) – AC methods

Propriétés diélectriques et résistives des matériaux isolants solides –

Partie 2-2: Permittivité relative et facteur de dissipation – Hautes fréquences

(1 MHz à 300 MHz) – Méthodes en courant alternatif

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 17.220.99; 29.035.01 ISBN 978-2-8322-1096-7

– 2 – IEC 62631-2-2:2022 © IEC 2022
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 Methods of test . 8
4.1 Basic theory . 8
4.2 Distinctive factors for the measurement in high frequency range . 12
4.3 Power supply . 13
4.4 Equipment . 13
4.4.1 Accuracy . 13
4.4.2 Distinctive feature of equipment for measurement in high frequency
range . 14
4.4.3 Choice of measurement methods . 15
4.5 Calibration . 16
4.6 Test specimen . 16
4.6.1 General . 16
4.6.2 Recommended dimensions of test specimen and electrode
arrangements . 16
4.6.3 Number of test specimens . 16
4.6.4 Conditioning and pre-treatment of test specimen . 16
4.7 Procedures for specific materials . 17
5 Test procedure . 17
5.1 General . 17
5.2 Calculation of permittivity and relative permittivity . 17
5.2.1 Relative permittivity . 17
5.2.2 Dielectric dissipation factor tan δ . 17
6 Report . 17
7 Repeatability and reproducibility . 18
Annex A (informative) Compensation method using a series circuit . 19
Annex B (informative) Parallel electrodes with shield ring . 20
Annex C (informative) Apparatus . 21
C.1 Parallel T network bridge . 21
C.2 Resonance method . 22
C.3 I-V method designed for high frequencies . 24
C.4 Auto-balancing bridge method . 24
Annex D (informative) Non-contacting electrode method with micrometer-controlled
parallel electrodes in air . 26
Bibliography . 28

Figure 1 – Dielectric dissipation factor . 10
Figure 2 – Equivalent circuit diagrams with capacitive test specimen . 11
Figure 3 – Equivalent parallel circuit for test fixture with sample and leads to
equipment . 12
Figure 4 – Existence of residual impedance and stray capacitance in directly
connected system . 15

IEC 62631-2-2:2022 © IEC 2022 – 3 –
Figure A.1 – Compensation method using a series circuit . 19
Figure B.1 – Configuration of parallel electrode with shield ring . 20
Figure C.1 – Parallel T network, principal circuit diagram . 21
Figure C.2 – Parallel T network, practical circuit diagram . 21
Figure C.3 – Principle of resonance method, circuit diagram (originally from Q meter) . 23
Figure C.4 – Auto-balancing circuit . 25
Figure D.1 – Non-contacting electrode method . 27

Table 1 – Applicable frequency range in effective apparatus . 16

– 4 – IEC 62631-2-2:2022 © IEC 2022
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
DIELECTRIC AND RESISTIVE PROPERTIES OF
SOLID INSULATING MATERIALS –
Part 2-2: Relative permittivity and dissipation factor –
High frequencies (1 MHz to 300 MHz) – 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 commit
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