EN IEC 62631-2-1:2018

SLOVENSKI STANDARD
01-julij-2018
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Dielectric and resistive properties of solid insulating materials - Part 2-1: Relative
permittivity and dissipation factor - Technical Frequencies (0.1 Hz - 10 MHz), AC
Methods (IEC 62631-2-1:2018)
Propriétés diélectriques et résistives des matériaux isolants solides - Partie 2-1:
Permittivité relative et facteur de dissipation - Fréquences techniques (0,1 Hz à 10 MHz),
méthodes en courant alternatif (IEC 62631-2-1:2018)
Ta slovenski standard je istoveten z: EN IEC 62631-2-1:2018
ICS:
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 62631-2-1

NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2018
ICS 17.220.99; 29.035.01
English Version
Dielectric and resistive properties of solid insulating materials -
Part 2-1: Relative permittivity and dissipation factor - Technical
frequencies (0,1 Hz to 10 MHz) - AC Methods
(IEC 62631-2-1:2018)
Propriétés diélectriques et résistives des matériaux isolants Dielektrische und resistive Eigenschaften fester
solides - Partie 2-1: Permittivité relative et facteur de Elektroisolierstoffe Teil 2-1: Dielektrizitätszahl und der
dissipation - Fréquences techniques (0,1 Hz à 10 MHz) - Verlustfaktor Technische Frequenzen (0,1 Hz - 10 MHz) -
Méthodes en courant alternatif Wechselspannungsverfahren
(IEC 62631-2-1:2018) (IEC 62631-2-1:2018)
This European Standard was approved by CENELEC on 2018-04-03. 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, 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
© 2018 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 62631-2-1:2018 E

European foreword
The text of document 112/412/FDIS, future edition 1 of IEC 62631-2-1, 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 62631-2-1:2018.

The following dates are fixed:
• latest date by which the document has to be (dop) 2019-01-03
implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2021-04-03
• latest date by which the national
standards conflicting with the
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.

Endorsement notice
The text of the International Standard IEC 62631-2-1:2018 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 60216-1 NOTE Harmonized as EN 60216-1.
IEC 60216-4-1:2006 NOTE Harmonized as EN 60216-4-1:2006 (not modified).
IEC 60247 NOTE Harmonized as EN 60247.
IEC 60505 NOTE Harmonized as EN 60505.
IEC 62631-1 NOTE Harmonized as EN 62631-1.
IEC 60455 series NOTE Harmonized as EN 60455 series.
IEC 60464 series NOTE Harmonized as EN 60464 series.
IEC 61212 series NOTE Harmonized as EN 61212 series.
ISO 291 NOTE Harmonized as EN ISO 291.
ISO 294-1 NOTE Harmonized as EN ISO 294-1.
ISO 294-3 NOTE Harmonized as EN ISO 294-3.
ISO 295 NOTE Harmonized as EN ISO 295.

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
ISO 4593 -  Plastics - Film and sheeting - - -
Determination of thickness by mechanical
scanning
IEC 62631-2-1 ®
Edition 1.0 2018-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Dielectric and resistive properties of solid insulating materials –

Part 2-1: Relative permittivity and dissipation factor – Technical frequencies

(0,1 Hz to 10 MHz) – AC methods

Propriétés diélectriques et résistives des matériaux isolants solides –

Partie 2-1: Permittivité relative et facteur de dissipation – Fréquences techniques

(0,1 Hz à 10 MHz) – Méthodes en courant alternatif

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 17.220.99; 29.035.01 ISBN 978-2-8322-5414-1

– 2 – IEC 62631-2-1:2018 © IEC 2018
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Method of test . 7
4.1 General theory . 7
4.2 Power supply (voltage) . 10
4.3 Equipment . 10
4.3.1 Accuracy . 10
4.3.2 Choice of measuring methods . 10
4.3.3 Measurement setup with applied electrodes to the material . 11
4.4 Calibration . 14
4.5 Test specimen . 14
4.5.1 General . 14
4.5.2 Recommended dimensions of test specimen and electrode
arrangements . 15
4.5.3 Manufacturing of test specimen . 15
4.5.4 Number of test specimen . 15
4.5.5 Conditioning and pre-treatment of test specimen . 16
4.6 Procedures for specific materials . 16
5 Test procedure . 16
5.1 General . 16
5.2 Calculation of permittivity and relative permittivity . 16
5.2.1 Relative permittivity . 16
5.2.2 The dielectric dissipation factor tan δ . 16
6 Report . 16
7 Repeatability and reproducibility . 17
Annex A (informative) Basic fundamentals . 18
A.1 Error for the effective area in guard ring electrodes – Examples with d =
25 mm, 50 mm or 100 mm and w = 1 mm . 18
A.2 Computation of edge correction of effective area . 19
A.3 Determining H and calculating B . 20
Bibliography . 21

Figure 1 – Dielectric dissipation factor . 8
Figure 2 – Equivalent circuit diagrams . 9
Figure 3 – Cylindrical electrode with guard ring for plate designed specimen . 12
Figure 4 – Specimen with liquid electrodes . 13
Figure A.1 – Area error of h in e with Ɛ = 1 . 18
% r
Figure A.2 – Area error of h in e with Ɛ = ∞ . 18
% r
Figure A.3 – Error calculation for different Ɛ and d . 18
r 1
Figure A.4 – Flow chart for the computation of edge correction of effective area . 19
Figure A.5 – Factor H versus gap and height . 20

Table 1 – Test specimen . 15

IEC 62631-2-1:2018 © IEC 2018 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
DIELECTRIC AND RESISTIVE PROPERTIES
OF SOLID INSULATING MATERIALS –

Part 2-1: Relative permittivity and dissipation factor –
Technical frequencies (0,1 Hz to 10 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,
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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
...