IEC 62631-3-2:2015

Dielectric and resistive properties of solid insulating materials - Part 3-2: Determination of resistive properties (DC methods) - Surface resistance and surface resistivity

IEC 62631-3-2:2015 covers methods of test for the determination of surface resistance and surface resistivity of electrical insulation materials by applying DC voltage. This first edition cancels and replaces the second edition of IEC 60093, published in 1980, and constitutes a technical revision. This edition includes the following significant technical changes with respect to the second edition of IEC 60093:
a) IEC 60093 has been completely revised, both editorially and technically, and incorporated into the new IEC 62631 series;
b) test methods have been updated to current day state of the art;
c) volume and surface resistance and resistivity are now separated into IEC 62631-3-1 and IEC 62631-3-2, respectively.

Propriétés diélectriques et résistives des matériaux isolants solides - Partie 3-2: Détermination des propriétés résistives (méthodes en courant continu) - Résistance superficielle et résistivité superficielle

L'IEC 62631-3-2:2015 couvre des méthodes d'essai pour déterminer la résistance superficielle et la résistivité superficielle de matériaux isolants électriques en appliquant une tension continue. Cette première édition annule et remplace la deuxième édition de l'IEC 60093 parue en 1980 dont elle constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à la deuxième édition de l'IEC 60093:
a) l'IEC 60093 a été entièrement révisée tant au plan rédactionnel que technique et insérée dans la nouvelle série IEC 62631;
b) les méthodes d'essai ont été adaptées à l'état actuel de la technique;
c) les résistances et les résistivités transversales et superficielles sont maintenant séparées et font l'objet de deux parties, l'IEC 62631-3-1 et l'IEC 62631-3-2, respectivement.

General Information

• Status: Published
• Publication Date: 03-Dec-2015
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 17.220.99 - Other standards related to electricity and magnetism
• ICS: 29.035.01 - Insulating materials in general
• Technical Committee: TC 112 - Evaluation and qualification of electrical insulating materials and systems
• Drafting Committee: WG 4 - TC 112/WG 4

Relations

• Revised: IEC 62631-3-2:2023 - Dielectric and resistive properties of solid insulating materials - Part 3-2: Determination of resistive properties (DC methods) - Surface resistance and surface resistivity
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 62631-3-2 ®
Edition 1.0 2015-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Dielectric and resistive properties of solid insulating materials –
Part 3-2: Determination of resistive properties (DC methods) – Surface
resistance and surface resistivity

Propriétés diélectriques et résistives des matériaux isolants solides –
Partie 3-2: Détermination des propriétés résistives (méthodes en courant
continu) – Résistance superficielle et résistivité superficielle

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IEC 62631-3-2 ®
Edition 1.0 2015-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Dielectric and resistive properties of solid insulating materials –

Part 3-2: Determination of resistive properties (DC methods) – Surface

resistance and surface resistivity

Propriétés diélectriques et résistives des matériaux isolants solides –

Partie 3-2: Détermination des propriétés résistives (méthodes en courant

continu) – Résistance superficielle et résistivité superficielle

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 17.220.99; 29.035.01 ISBN 978-2-8322-3025-1

– 2 – IEC 62631-3-2:2015  IEC:2015
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Significance . 7
5 Method of test . 7
5.1 General . 7
5.2 Voltage . 8
5.3 Equipment . 8
5.3.1 General . 8
5.3.2 Accuracy . 8
5.3.3 Voltage source . 8
5.3.4 Electrode arrangement A – Spring loaded electrodes . 8
5.3.5 Electrode arrangement B – Small line electrodes . 9
5.3.6 Electrode arrangement C – Annular electrodes . 10
5.3.7 Electrode arrangement D – Line electrodes . 11
5.3.8 Electrode arrangement E – Line electrodes for small plates . 11
5.4 Test circuit . 11
5.5 Calibration . 12
5.6 Test specimen . 12
5.6.1 Recommended dimensions of test specimen and electrode
arrangements . 12
5.6.2 Manufacturing of test specimen . 12
5.6.3 Number of test specimen . 13
5.6.4 Application of electrodes. 13
5.6.5 Conditioning and pre-treatment of test specimen . 13
5.7 Test procedure . 13
6 Evaluation . 13
6.1 For electrode arrangements A, B, D, and E . 13
6.2 For electrode arrangement C . 14
7 Test report . 14
8 Repeatability and reproducibility . 15
Annex A (informative) Specimen dimensions and electrode arrangement . 16
Bibliography . 17

Figure 1 – Electrode arrangement A (example) . 9
Figure 2 – Collector electrode for electrode arrangement B. 10
Figure 3 – Electrode arrangement C . 10
Figure 4 – Connection diagram of measurement with two- and three-terminal electrode
arrangements. 12

Table 1 – Typical electrode dimensions for electrode arrangement C . 11
Table A.1 – Recommended test specimen dimensions and electrode arrangements for
specific products . 16

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
DIELECTRIC AND RESISTIVE PROPERTIES
OF SOLID INSULATING MATERIALS –

Part 3-2: Determination of resistive properties (DC methods) –
Surface resistance and surface resistivity

FOREWORD
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