EN 62631-1:2011

SLOVENSKI STANDARD
01-september-2011
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Dielectric and resistive properties of solid insulating materials - Part 1: General
Dielektrische und resistive Eigenschaften fester Elektroisolierstoffe - Teil 1: Grundlagen
Propriétés diélectriques et résistives des matériaux isolants solides - Partie 1:
Généralités
Ta slovenski standard je istoveten z: EN 62631-1:2011
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 62631-1
NORME EUROPÉENNE
June 2011
EUROPÄISCHE NORM
ICS 29.035.01 Supersedes HD 429 S1:1983 (partially), HD 438 S1:1984 (partially), HD 568 S1:1990 (partially)

English version
Dielectric and resistive properties of solid insulating materials -
Part 1: General
(IEC 62631-1:2011)
Propriétés diélectriques et résistives des Dielektrische und resistive Eigenschaften
matériaux isolants solides - fester Elektroisolierstoffe -
Partie 1: Généralités Teil 1: Grundlagen
(CEI 62631-1:2011) (IEC 62631-1:2011)

This European Standard was approved by CENELEC on 2011-06-02. 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 Central Secretariat 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 Central Secretariat 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, Romania, Slovakia, Slovenia,
Spain, Sweden, Switzerland and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Management Centre: Avenue Marnix 17, B - 1000 Brussels

© 2011 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 62631-1:2011 E
Foreword
The text of document 112/169/FDIS, future edition 1 of IEC 62631-1, prepared by IEC TC 112, Evaluation
and qualification of electrical insulating materials and systems, was submitted to the IEC-CENELEC
parallel vote and was approved by CENELEC as EN 62631-1 on 2011-06-02.
This European Standard partially supersedes HD 429 S1:1983, HD 438 S1:1984 and HD 568 S1:1990.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2012-03-02
– latest date by which the national standards conflicting
(dow) 2014-06-02
with the EN have to be withdrawn
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 62631-1:2011 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 60247 NOTE  Harmonized as EN 60247.
IEC 60505 NOTE  Harmonized as EN 60505.
__________
- 3 - EN 62631-1:2011
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following referenced documents are indispensable for the application 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  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year

IEC 60050-212 - International Electrotechnical Vocabulary - -
(IEV) -
Chapter 212: Insulating solids, liquids and
gases
IEC 60093 1980 Methods of test for volume resistivity and HD 429 S1 1983
surface resistivity of solid electrical insulating
materials
IEC 60167 1964 Methods of test for the determination of the HD 568 S1 1990
insulation resistance of solid insulating
materials
IEC 60250 1969 Recommended methods - -
for the determination of the permittivity and
dielectric dissipation factor of electrical
insulating materials at power, audio and radio
frequencies including metre wavelengths

IEC 60345 1971 Method of test for electrical resistance and HD 438 S1 1984
resistivity of insulating materials at elevated
temperatures
IEC 60377-1 1973 Methods for the determination - -
of the dielectric properties of insulating
materials at frequencies above 300 MHz -
Part 1: General
IEC 60377-2 1977 Methods for the determination of the dielectric - -
properties of insulating materials at
frequencies above 300 MHz -
Part 2: Resonance methods
ISO 291 - Plastics - Standard atmospheres for EN ISO 291 -
conditioning and testing
ISO 558 - Conditioning and testing - Standard - -
atmospheres - Definitions
IEC 62631-1 ®
Edition 1.0 2011-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Dielectric and resistive properties of solid insulating materials –
Part 1: General
Propriétés diélectriques et résistives des matériaux isolants solides –
Partie 1: Généralités
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX Q
ICS 29.035.01 ISBN 978-2-88912-477-0

– 2 – 62631-1  IEC:2011
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
3.1 General definitions . 7
3.2 Definitions for resistive properties . 7
3.3 Definitions for dielectric properties . 7
4 Factors influencing properties of electrical insulating materials . 11
4.1 General . 11
4.2 Factors influencing resistive and dielectric properties . 11
4.2.1 General . 11
4.2.2 Time . 12
4.2.3 Frequency . 12
4.2.4 Temperature . 13
4.2.5 Moisture . 14
4.2.6 Electric field strength . 14
4.2.7 Voltage . 14
4.2.8 Conditioning . 14
4.2.9 Test specimen . 14
4.2.10 Electrode material . 14
5 Electrode systems . 14
6 Test procedures . 15
Bibliography . 16

Figure 1 – Dielectric dissipation factor . 9
Figure 2 – Equivalent circuit diagrams . 9
Figure 3 – Influence of frequency ω = 2πf on permittivity and dielectric dissipation
factor tan δ . 13
Figure 4 – Example of the influence of temperature on the permittivity and dielectric
dissipation factors . 13

Table 1 – Planned structure of IEC 62631 . 5

62631-1  IEC:2011 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
DIELECTRIC AND RESISTIVE PROPERTIES
OF SOLID INSULATING MATERIALS –

Part 1: General
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 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
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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
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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
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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.
International Standard IEC 62631-1 has been prepared by IEC technical committee 112:
Evaluation and qualification of electrical insulating materials and systems.
This International Standard, together with its future parts, is intended to replace certain
standards as set out and explained in the Introduction.
Such standards will, however, remain valid until the respective part of IEC 62631 is published.
The text of this standard is based on the following documents:
FDIS Report on voting
112/169/FDIS 112/176/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.

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