IEC 62631-2-1:2018

Dielectric and resistive properties of solid insulating materials - Part 2-1: Relative permittivity and dissipation factor - Technical Frequencies (0,1 Hz - 10 MHz) - AC Methods

IEC 62631-2-1:2018 describes test methods for the determination of permittivity and dissipation factor properties of solid insulating materials (AC methods from 0,1 Hz up to 10 MHz).
This first edition cancels and replaces the first edition IEC 60250, published in 1969. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a. technical frequencies confined to AC methods;
b. update on measurements on solid dielectric materials.

Propriétés diélectriques et résistives des matériaux isolants solides - Partie 2-1: Permittivité relative et facteur de dissipation - Fréquences techniques (0,1 Hz à 10 MHz) - Méthodes en courant alternatif

L'IEC 62631-2-1:2018 décrit des méthodes d'essai pour déterminer les propriétés de la permittivité et du facteur de dissipation de matériaux isolants solides (méthodes en courant alternatif de 0,1 Hz à 10 MHz).
Cette première édition annule et remplace la première édition de l'IEC 60250, publiée en 1969. Cette édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a. fréquences techniques réservées aux méthodes en courant alternatif;
b. mise à jour des mesures appliquées aux matériaux diélectriques solides.

General Information

• Status: Published
• Publication Date: 26-Feb-2018
• 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
• Current Stage: PPUB - Publication issued
• Start Date: 02-Feb-2018
• Completion Date: 27-Feb-2018

Standards Content (Sample)

IEC 62631-2-1 ®
Edition 1.0 2018-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Dielectric and resistive properties of solid insulating materials –
Part 2-1: Relative permittivity and dissipation factor – Technical frequencies
(0,1 Hz to 10 MHz) – AC methods

Propriétés diélectriques et résistives des matériaux isolants solides –
Partie 2-1: Permittivité relative et facteur de dissipation – Fréquences techniques
(0,1 Hz à 10 MHz) – Méthodes en courant alternatif

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IEC 62631-2-1 ®
Edition 1.0 2018-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Dielectric and resistive properties of solid insulating materials –

Part 2-1: Relative permittivity and dissipation factor – Technical frequencies

(0,1 Hz to 10 MHz) – AC methods

Propriétés diélectriques et résistives des matériaux isolants solides –

Partie 2-1: Permittivité relative et facteur de dissipation – Fréquences techniques

(0,1 Hz à 10 MHz) – Méthodes en courant alternatif

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 17.220.99; 29.035.01 ISBN 978-2-8322-5414-1

– 2 – IEC 62631-2-1:2018 © IEC 2018
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Method of test . 7
4.1 General theory . 7
4.2 Power supply (voltage) . 10
4.3 Equipment . 10
4.3.1 Accuracy . 10
4.3.2 Choice of measuring methods . 10
4.3.3 Measurement setup with applied electrodes to the material . 11
4.4 Calibration . 14
4.5 Test specimen . 14
4.5.1 General . 14
4.5.2 Recommended dimensions of test specimen and electrode
arrangements . 15
4.5.3 Manufacturing of test specimen . 15
4.5.4 Number of test specimen . 15
4.5.5 Conditioning and pre-treatment of test specimen . 16
4.6 Procedures for specific materials . 16
5 Test procedure . 16
5.1 General . 16
5.2 Calculation of permittivity and relative permittivity . 16
5.2.1 Relative permittivity . 16
5.2.2 The dielectric dissipation factor tan δ . 16
6 Report . 16
7 Repeatability and reproducibility . 17
Annex A (informative) Basic fundamentals . 18
A.1 Error for the effective area in guard ring electrodes – Examples with d =
25 mm, 50 mm or 100 mm and w = 1 mm . 18
A.2 Computation of edge correction of effective area . 19
A.3 Determining H and calculating B . 20
Bibliography . 21

Figure 1 – Dielectric dissipation factor . 8
Figure 2 – Equivalent circuit diagrams . 9
Figure 3 – Cylindrical electrode with guard ring for plate designed specimen . 12
Figure 4 – Specimen with liquid electrodes . 13
Figure A.1 – Area error of h in e with Ɛ = 1 . 18
% r
Figure A.2 – Area error of h in e with Ɛ = ∞ . 18
% r
Figure A.3 – Error calculation for different Ɛ and d . 18
r 1
Figure A.4 – Flow chart for the computation of edge correction of effective area . 19
Figure A.5 – Factor H versus gap and height . 20

Table 1 – Test specimen . 15

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

Part 2-1: Relative permittivity and dissipation factor –
Technical frequencies (0,1 Hz to 10 MHz) – AC methods

FOREWORD
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