SIST EN IEC 62631-3-11:2018

Dielectric and resistive properties of solid insulating materials - Part 3-11: Determination of resistive properties (DC Methods) - Volume resistance and volume resistivity, method for impregnation and coating materials (IEC 62631-3-11:2018)

IEC 62631-3-11:2018 covers a method of test for the determination of volume resistance and volume resistivity of electrical insulation materials by applying DC voltage. It covers the materials described in IEC 60455-3-5, IEC 60464-3-1, IEC 60464-3-2 and similar products.

Dielektrische und resistive Eigenschaften fester Isolierstoffe - Teil 3-11: Bestimmung resistiver Eigenschaften (Gleichspannungsverfahren) - Durchgangswiderstand und spezifischer Durchgangswiderstand, Verfahren für Tränk- und Beschichtungsstoffe

Propriétés diélectriques et résistives des matériaux isolants solides - Partie 3-11: Détermination des propriétés résistives (méthodes en courant continu) - Résistance transversale et résistivité transversale, méthode pour les matériaux d'imprégnation et de revêtement (IEC 62631-3-11:2018)

L'IEC 62631-3-11:2018 couvre une méthode d'essai pour déterminer la résistance volumique et la résistivité volumique des matériaux isolants électriques par application d'une tension continue. Elle couvre les matériaux décrits dans l'IEC 60455-3-5, l'IEC 60464-3-1, l'IEC 60464-3-2 et des produits similaires.

Dielektrične in uporovne lastnosti trdnih izolacijskih materialov - 3-11. del: Ugotavljanje uporovnih lastnosti (metode z enosmernim tokom) - Prehodna upornost in specifična prehodna upornost - Metoda za impregnacijske in prekrivne snovi (IEC 62631-3-11:2018)

Ta del standarda IEC 62631 obravnava preskusno metodo za ugotavljanje prehodne upornosti in specifične prehodne upornosti elektroizolacijskih materialov z uporabo enosmernega toka. Zajema material opisan v standardih IEC 60455-3-5, IEC 60464-3-1, IEC 60464-3-2 in podobnih izdelkih.

General Information

• Status: Published
• Publication Date: 12-Apr-2018
• ICS: 29.035.01 - Insulating materials in general
• Technical Committee: IIZS - Insulating materials and systems
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 28-Mar-2018
• Due Date: 02-Jun-2018
• Completion Date: 13-Apr-2018
• Ref Project: EN IEC 62631-3-11:2018 - Dielectric and resistive properties of solid insulating materials - Part 3-11: Determination of resistive properties (DC methods) - Volume resistance and volume resistivity - Method for impregnation and coating materials

Overview

EN IEC 62631-3-11:2018 (IEC 62631-3-11:2018) specifies a standardized DC test method for determining volume resistance and volume resistivity of solid electrical insulation - specifically for impregnation and coating materials. The standard gives a uniform approach to specimen preparation, equipment, measurement procedure and reporting so results are comparable across laboratories and suppliers. It applies to products referenced in IEC 60455-3-5, IEC 60464-3-1, IEC 60464-3-2 and similar insulating materials.

Key topics and requirements

• Scope and purpose: Measurement of volume resistance (Ω) and volume resistivity (Ω·m) using DC methods for impregnation and coating materials.
• Test method essentials: Application of a DC voltage and measurement of leakage current through a specimen to derive volume resistance/resistivity.
• Equipment and accuracy: Requirements for power supply (voltage stability), measurement accuracy, guarding techniques, electrode design and calibration.
• Specimen preparation: Guidance aligned with ISO 1514 (test panels) and ISO 2808 (film thickness) to ensure consistent sample geometry and thickness.
• Special procedures: Defined methods for measuring resistivity as a function of temperature and after environmental conditioning (e.g., seven days immersion in water).
• Data handling: Calculation methods, reporting requirements and statements on repeatability and reproducibility to support reliable comparisons.
• Normative references: The general method EN/IEC 62631-3-1 and applicable product standards (IEC 60455, IEC 60464 series) are cited for complementary requirements.

Applications and users

• Manufacturers of impregnation resins, varnishes and coating systems use the standard for product development, QC and specification compliance.
• Test laboratories and certification bodies adopt the method to generate reproducible material property data for compliance and comparison.
• Design and R&D engineers rely on volume resistivity data when selecting insulating coatings for transformers, motors, coils and electronic assemblies.
• Procurement and quality managers use standardized test reports to evaluate supplier materials and ensure consistent electrical insulation performance.

Related standards

• EN/IEC 62631-3-1 – General method for volume resistance/resistivity (DC).
• IEC 60455-3-5, IEC 60464-3-1, IEC 60464-3-2 – Product-specific descriptions referenced in the scope.
• ISO 1514, ISO 2808 – Specimen panels and film-thickness determination referenced for sample preparation.

EN IEC 62631-3-11:2018 is essential for anyone needing reliable, comparable volume resistivity and volume resistance data for impregnation and coating materials used in electrical insulation systems.

Standards Content (Sample)

SLOVENSKI STANDARD
01-maj-2018
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8JRWDYOMDQMHXSRURYQLKODVWQRVWLPHWRGH]HQRVPHUQLPWRNRP3UHKRGQD
XSRUQRVWLQVSHFLILþQDSUHKRGQDXSRUQRVW0HWRGD]DLPSUHJQDFLMVNHLQSUHNULYQH
VQRYL,(&
Dielectric and resistive properties of solid insulating materials - Part 3-11: Determination
of resistive properties (DC Methods) - Volume resistance and volume resistivity, method
for impregnation and coating materials (IEC 62631-3-11:2018)
Propriétés diélectriques et résistives des matériaux isolants solides - Partie 3-11:
Détermination des propriétés résistives (méthodes en courant continu) - Résistance
transversale et résistivité transversale, méthode pour les matériaux d'imprégnation et de
revêtement (IEC 62631-3-11:2018)
Ta slovenski standard je istoveten z: EN IEC 62631-3-11:2018
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 62631-3-11

NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2018
ICS 17.220.99; 29.035.01
English Version
Dielectric and resistive properties of solid insulating materials -
Part 3-11: Determination of resistive properties (DC methods) -
Volume resistance and volume resistivity - Method for
impregnation and coating materials
(IEC 62631-3-11:2018)
Propriétés diélectriques et résistives des matériaux isolants Dielektrische und resistive Eigenschaften fester Isolierstoffe
solides - Partie 3-11: Détermination des propriétés - Teil 3-11: Bestimmung resistiver Eigenschaften
résistives (méthodes en courant continu) - Résistance (Gleichspannungsverfahren) - Durchgangswiderstand und
volumique et résistivité volumique - Méthode pour spezifischer Durchgangswiderstand - Verfahren für Tränk-
matériaux d'imprégnation et de revêtement und Beschichtungsstoffe
(IEC 62631-3-11:2018) (IEC 62631-3-11:2018)
This European Standard was approved by CENELEC on 2018-02-14. 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 62631-3-11:2018 E

European foreword
The text of document 112/409/FDIS, future edition 1 of IEC 62631-3-11, 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 62631-3-11:2018.

The following dates are fixed:
• latest date by which the document has to be (dop) 2018-11-14
implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2021-02-14
• 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 62631-3-11:2018 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 60455-3-5 NOTE Harmonized as EN 60455-3-5.
IEC 60464-3-1 NOTE Harmonized as EN 60464-3-1.
IEC 60464-3-2 NOTE Harmonized as EN 60464-3-2.

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.cenelec.eu.
Publication Year Title EN/HD Year
IEC 62631-3-1 -  Dielectric and resistive properties of solid EN 62631-3-1 -
insulating materials - Part 3-1
Determination of resistive properties (DC
methods) - Volume resistance and volume
resistivity, general method
ISO 1514 -  EN ISO 1514 -
ISO 2808 -  Paints and varnishes_- Determination of EN ISO 2808 -
film thickness
IEC 62631-3-11 ®
Edition 1.0 2018-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Dielectric and resistive properties of solid insulating materials –

Part 3-11: Determination of resistive properties (DC methods) – Volume

resistance and volume resistivity – Method for impregnation and coating

materials
Propriétés diélectriques et résistives des matériaux isolants solides –

Partie 3-11: Détermination des propriétés résistives (méthodes en courant

continu) – Résistance volumique et résistivité volumique – Méthode pour

matériaux d'imprégnation et de revêtement

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 17.220.99; 29.035.01 ISBN 978-2-8322-5184-3

– 2 – IEC 62631-3-11:2018 © IEC 2018
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Significance . 7
5 Method of test . 7
5.1 General . 7
5.2 Power supply (voltage) . 7
5.3 Equipment . 8
5.3.1 Accuracy . 8
5.3.2 Guarding . 8
5.3.3 Electrodes . 8
5.3.4 Calibration . 8
5.3.5 Test specimen . 8
5.4 Procedure for volume resistivity as function of temperature . 9
5.4.1 General . 9
5.4.2 Equipment . 9
5.4.3 Test set-up . 9
5.4.4 Procedure . 9
5.4.5 Calculation . 9
5.5 Procedure for volume resistivity after seven days of immersion in water . 10
5.5.1 General . 10
5.5.2 Equipment . 10
5.5.3 Test set-up . 10
5.5.4 Procedure . 10
5.5.5 Calculation . 10
6 Report . 10
7 Repeatability and reproducibility . 11
Bibliography . 12

IEC 62631-3-11:2018 © IEC 2018 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
DIELECTRIC AND RESISTIVE PROPERTIES
OF SOLID INSULATING MATERIALS –

Part 3-11: Determination of resistive properties (DC methods) –
Volume resistance and volume resistivity – Method for
impregnation and coating materials

FOREWORD
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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 62631-3-11 has been prepared by IEC technical committee 112:
Evaluation and qualification of electrical insulating materials and systems.
The text of this standard is based on the following documents:
FDIS Report on voting
112/409/FDIS 112/415/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.
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 websi
...