Dielectric and resistive properties of solid insulating materials - Part 3-4: Determination of resistive properties (DC methods) - Volume resistance and volume resistivity at elevated temperatures

This part of IEC 62631 covers procedures for the determination of insulation resistance and volume resistivity of insulating materials by applying DC-voltage and temperatures up to 800 °C. The typical application materials include high temperature mica plate and alumina ceramics.

Dielektrische und resistive Eigenschaften fester Isolierstoffe – Teil 3-4: Bestimmung resistiver Eigenschaften (Gleichspannungsverfahren) – Durchgangswiderstand und spezifischer Durchgangswiderstand bei erhöhten Temperaturen

Propriétés diélectriques et résistives des matériaux isolants solides - Partie 3-4: Détermination des propriétés résistives (méthodes en courant continu) - Résistance transversale et résistivité transversale aux températures élevées

La présente partie de l'IEC 62631 couvre les procédures de détermination de la résistance d'isolement et de la résistivité transversale des matériaux isolants en appliquant une tension continue et des températures jusqu'à 800 °C. Les matériaux d'application classiques incluent les plaques de mica et les céramiques d'alumine haute température.

Dielektrične in uporovne lastnosti trdnih izolacijskih materialov - 3-4. del: Ugotavljanje uporovnih lastnosti (metode z enosmernim tokom) - Prehodna upornost in specifična prehodna upornost pri povišanih temperaturah (IEC 62631-3-4:2019)

Ta del standarda IEC 62631 zajema postopke za določanje izolacijske upornosti in specifične prehodne upornosti izolacijskih materialov z enosmernim tokom in temperaturami do 800 °C. Običajni uporabljeni materiali vključujejo visokotemperaturne ploščice iz sljude in aluminijevo oksidno keramiko.

General Information

Status
Published
Publication Date
09-May-2019
Current Stage
6060 - Document made available
Due Date
10-May-2019
Completion Date
10-May-2019

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SLOVENSKI STANDARD
SIST EN IEC 62631-3-4:2019
01-julij-2019
Dielektrične in uporovne lastnosti trdnih izolacijskih materialov - 3-4. del:
Ugotavljanje uporovnih lastnosti (metode z enosmernim tokom) - Prehodna
upornost in specifična prehodna upornost pri povišanih temperaturah (IEC 62631-
3-4:2019)

Dielectric and resistive properties of solid insulating materials - Part 3-4: Determination of

resistive properties (DC methods) - Volume resistance and volume resistivity at elevated

temperatures (IEC 62631-3-4:2019)

Dielektrische und resistive Eigenschaften fester Isolierstoffe - Teil 3-4: Bestimmung

resistiver Eigenschaften (Gleichspannungsverfahren) - Durchgangswiderstand und
spezifischer Durchgangswiderstand bei erhöhten Temperaturen (IEC 62631-3-4:2019)

Propriétés diélectriques et résistives des matériaux isolants solides - Partie 3-4:

Détermination des propriétés résistives (méthodes en courant continu) - Résistance

transversale et résistivité transversale aux températures élevées (IEC 62631-3-4:2019)

Ta slovenski standard je istoveten z: EN IEC 62631-3-4:2019
ICS:
29.035.01 Izolacijski materiali na Insulating materials in
splošno general
SIST EN IEC 62631-3-4:2019 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN IEC 62631-3-4:2019
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SIST EN IEC 62631-3-4:2019
EUROPEAN STANDARD EN IEC 62631-3-4
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2019
ICS 17.220.99; 29.035.01
English Version
Dielectric and resistive properties of solid insulating materials -
Part 3-4: Determination of resistive properties (DC methods) -
Volume resistance and volume resistivity at elevated
temperatures
(IEC 62631-3-4:2019)

Propriétés diélectriques et résistives des matériaux isolants Dielektrische und resistive Eigenschaften fester Isolierstoffe

solides - Partie 3-4: Détermination des propriétés résistives - Teil 3-4: Bestimmung resistiver Eigenschaften

(méthodes en courant continu) - Résistance transversale et (Gleichspannungsverfahren) - Durchgangswiderstand und

résistivité transversale aux températures élevées spezifischer Durchgangswiderstand bei erhöhten

(IEC 62631-3-4:2019) Temperaturen
(IEC 62631-3-4:2019)

This European Standard was approved by CENELEC on 2019-05-02. 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 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

© 2019 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN IEC 62631-3-4:2019 E
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SIST EN IEC 62631-3-4:2019
EN IEC 62631-3-4:2019 (E)
European foreword

The text of document 112/406/CDV, future edition 1 of IEC 62631-3-4, 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 62631-3-4:2019.
The following dates are fixed:

• latest date by which the document has to be implemented at national (dop) 2020-02-02

level by publication of an identical national standard or by endorsement

• latest date by which the national standards conflicting with the (dow) 2022-05-02

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 62631-3-4:2019 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 62631-1 NOTE Harmonized as EN 62631-1
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SIST EN IEC 62631-3-4:2019
EN IEC 62631-3-4:2019 (E)
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 2010 Standard conditions for use prior to and during the EN 60212 2011

testing of solid electrical insulating materials

IEC 62631-3-1 - Dielectric and resistive properties of solid insulating EN 62631-3-1 -

materials - Part 3-1: Determination of resistive
properties (DC methods) - Volume resistance and
volume resistivity - General method
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SIST EN IEC 62631-3-4:2019
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SIST EN IEC 62631-3-4:2019
IEC 62631-3-4
Edition 1.0 2019-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Dielectric and resistive properties of solid insulating materials –
Part 3-4: Determination of resistive properties (DC methods) – Volume
resistance and volume resistivity at elevated temperatures
Propriétés diélectriques et résistives des matériaux isolants solides –
Partie 3-4: Détermination des propriétés résistives (méthodes en courant
continu) – Résistance transversale et résistivité transversale aux températures
élevées
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 17.220.99; 29.035.01 ISBN 978-2-8322-6688-5

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
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SIST EN IEC 62631-3-4:2019
– 2 – IEC 62631-3-4:2019 © IEC 2019
CONTENTS

FOREWORD ........................................................................................................................... 3

1 Scope .............................................................................................................................. 5

2 Normative references ...................................................................................................... 5

3 Terms and definitions ...................................................................................................... 5

4 Significance ..................................................................................................................... 6

5 Method of test ................................................................................................................. 6

5.1 General ................................................................................................................... 6

5.2 Power supply and test voltages ............................................................................... 6

5.3 Equipment .............................................................................................................. 6

5.3.1 Specimens and electrodes ............................................................................... 6

5.3.2 Heating chamber ............................................................................................. 7

5.3.3 Measuring leads .............................................................................................. 7

5.3.4 Temperature control ........................................................................................ 7

5.3.5 Special precautions during measurements ....................................................... 8

5.4 Calibration .............................................................................................................. 8

6 Procedure ........................................................................................................................ 8

6.1 Continuously increasing temperature (method A) .................................................... 8

6.2 Increasing the temperature by steps (method B) ..................................................... 8

6.3 Precautions to be taken .......................................................................................... 9

6.4 Calculation of volume resistivity .............................................................................. 9

7 Report ............................................................................................................................. 9

Annex A (informative) Principle of test apparatus ................................................................. 11

Bibliography .......................................................................................................................... 14

Figure A.1 – Circuit diagram of test apparatus ...................................................................... 11

Figure A.2 – Structure diagram of test apparatus .................................................................. 12

Figure A.3 – Pictures of test apparatus ................................................................................. 13

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SIST EN IEC 62631-3-4:2019
IEC 62631-3-4:2019 © IEC 2019 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
DIELECTRIC AND RESISTIVE PROPERTIES OF SOLID
INSULATING MATERIALS –
Part 3-4: Determination of resistive properties (DC methods) –
Volume resistance and volume resistivity at elevated temperatures
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) 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 62631-3-4 has been prepared by IEC technical committee 112:

Evaluation and qualification of electrical insulating materials and systems.

This edition of IEC 62631-3-4 cancels and replaces IEC 60345 “Method of test for electrical

resistance and resistivity of insulating materials at elevated temperatures”, published in 1971.

This edition constitutes a technical revision.

This edition includes the following significant technical changes with respect to IEC 60345:

a) The revised standard becomes part of the series IEC 62631-3-x. Title of the standard is

changed and adapted to the series as Part 3-4.

b) Clauses 2 "Normative references", 3 "Terms and definitions", and 4 "Significance" are

added.
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SIST EN IEC 62631-3-4:2019
– 4 – IEC 62631-3-4:2019 © IEC 2019

c) Subclauses 5.2 "Power supply, Voltage", 5.3.1.2 "Number of test specimens" and 5.3.1.3

"Conditioning and pre-treatment of test specimens" are added.

d) In 5.3.5 "Special precautions during measurements", errors analysis in the measurement

of current are modified, and aligned with IEC 62631-3-1.

e) In 6.2 "Increasing the temperature by steps (method B)", the method for more than one

specimen is removed.

f) The standard atmospheric conditions for testing and conditioning, especially the

temperature, are replaced according to IEC 60212.

g) The circuit diagram of test apparatus is modified, and the structure diagram and pictures

of test apparatus are added in Annex A.
h) The orders of part clauses are adjusted.
The text of this International Standard is based on the following documents:
CDV Report on voting
112/406/CDV 112/445/RVC

Full information on the voting for the approval of this International Standard can be found in

the report on voting indicated in the above table.

This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

A list of all parts in the IEC 62631 series, published under the general title Dielectric and

resistive properties of solid insulating materials, 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 "http://webstore.iec.ch" in the data related to

the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates

that it contains colours which are considered to be useful for the correct

understanding of its contents. Users should therefore print this document using a

colour printer.
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SIST EN IEC 62631-3-4:2019
IEC 62631-3-4:2019 © IEC 2019 – 5 –
DIELECTRIC AND RESISTIVE PROPERTIES OF SOLID
INSULATING MATERIALS –
Part 3-4: Determination of resistive properties (DC methods) –
Volume resistance and volume resistivity at elevated temperatures
1 Scope

This part of IEC 62631 covers procedures for the determination of insulation resistance and

volume resistivity of insulating materials by applying DC-voltage and temperatures up to

800 °C. The typical application materials include high temperature mica plate and alumina

ceramics.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their

content constitute
...

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