IEC 62631-1:2011

Dielectric and resistive properties of solid insulating materials - Part 1: General

IEC 62631-1:2011 gives general guidelines for the determination of dielectric and resistive properties of solid electrical insulating materials.

Propriétés diélectriques et résistives des matériaux isolants solides - Partie 1: Généralités

La CEI 62631-1:2011 donne des directives générales pour la détermination des propriétés diélectriques et résistives des matériaux isolants électriques solides.

General Information

• Status: Published
• Publication Date: 27-Apr-2011
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• 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
• Current Stage: PPUB - Publication issued
• Start Date: 15-May-2011
• Completion Date: 28-Apr-2011

Standards Content (Sample)

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
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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
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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.

– 4 – 62631-1  IEC:2011
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
62631-1  IEC:2011 – 5 –
INTRODUCTION
The IEC 62631 series is divided into four main parts, which are further subdivided into
component parts. The present Part 1 of IEC 62631 considers, general aspects related to the
measurement of dielectric and resistive properties of solid electric insulating materials. Parts
2 and 3 outline basic procedures for the measurement of dielectric and resistive properties by
means of AC and DC methods. These parts will gradually replace hitherto existing
International Standards. Part 4 will cover special methods of measurement and computational
methods.
Table 1 shows the planned future structure of IEC 62631, together with the standards it will
replace.
Table 1 – Planned structure of IEC 62631
Main title DIELECTRIC AND RESISTIVE PROPERTIES OF SOLID INSULATING MATERIALS
Part number Part title Remarks
IEC 62631-1 – General Amends and replaces
IEC 60093, IEC 60167,
IEC 60250, IEC 60345
IEC 62631-2 New
– Permittivit
...