IEC 60667-2:2020

Vulcanized fibre for electrical purposes - Part 2: Methods of test

IEC 60667-2:2020 gives methods of test for vulcanized fibre sheets for electrical purposes. Material made by combining with an adhesive several thicknesses of vulcanized fibre is not covered by this document. Materials which conform to this specification meet established levels of performance. However, the selection of a material by a user for a specific application is based on the actual requirements necessary for adequate performance in that application and not based on this specification alone. Safety warning: It is the responsibility of the user of the methods contained or referred to in this document to ensure that they are used in a safe manner. This second edition cancels and replaces the first edition published in 1982. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) added Terms and definitions
b) added General notes on tests
c) added Thickness instead of dimension
d) changed Apparent density from Density
e) added Arc resistance
f) deleted Sulphate content
g) added method (Bending) for flexibility
h) changed test method for internal ply adhesion
i) added Shrinkage

Fibres vulcanisées à usages électriques - Partie 2: Méthodes d’essai

IEC 60667-2:2020 spécifie les méthodes d’essai pour les feuilles en fibres vulcanisées à usages électriques. Les matériaux composites constitués de plusieurs couches de fibre vulcanisée assemblées par un adhésif ne sont pas couverts par le présent document. Les matériaux conformes à la présente spécification satisfont aux niveaux de performance établis. Cependant, le choix du matériau par un utilisateur pour une application spécifique est fondé sur les exigences réellement nécessaires pour une performance appropriée et non sur cette seule spécification. Mise en garde: Il est de la responsabilité de l’utilisateur des méthodes contenues ou mentionnées dans le présent document de veiller à ce qu’elles soient utilisées en toute sécurité. Cette deuxième édition annule et remplace la première édition parue en 1982. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) ajout de l’Article "Termes et définitions"
b) ajouts dans l’Article "Remarques générales sur les essais"
c) ajout du terme "épaisseur" en remplacement du terme "dimension"
d) remplacement du terme "masse volumique" par "masse volumique apparente"
e) ajout du contenu à l’Article "Résistance à l’arc"
f) suppression de l’Article "Teneur en sulfate"
g) ajout d’une méthode d’essai (Courbure) pour la flexibilité
h) modification de la méthode d’essai pour l’adhérence interne du feuilletage
i) ajout de l’Article "Stabilité dimensionnelle".

General Information

• Status: Published
• Publication Date: 12-May-2020
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 29.035.10 - Paper and board insulating materials
• Technical Committee: TC 15 - Solid electrical insulating materials
• Drafting Committee: MT 16 - TC 15/MT 16
• Current Stage: PPUB - Publication issued
• Start Date: 05-Jun-2020
• Completion Date: 13-May-2020

Standards Content (Sample)

IEC 60667-2 ®
Edition 2.0 2020-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Vulcanized fibre for electrical purposes –
Part 2: Methods of test
Fibres vulcanisées à usages électriques –
Partie 2: Méthodes d’essai
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IEC 60667-2 ®
Edition 2.0 2020-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Vulcanized fibre for electrical purposes –

Part 2: Methods of test
Fibres vulcanisées à usages électriques –

Partie 2: Méthodes d’essai
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.035.10 ISBN 978-2-8322-8294-6

– 2 – IEC 60667-2:2020 © IEC 2020
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative reference . 6
3 Terms and definitions . 6
4 General notes on tests . 7
4.1 Conditioning . 7
4.2 Drying . 7
4.3 Result . 7
5 Thickness . 7
6 Density . 7
6.1 Apparent density . 7
6.2 Density in liquid (specific gravity) . 8
7 Tensile strength and elongation . 8
8 Flexural strength. 9
9 Water absorption . 9
10 Electric strength up to and including 3 mm in thickness . 9
11 Arc resistance . 10
12 Chloride content . 10
13 Ash content . 10
14 Flexibility (bending) . 10
15 Moisture content . 11
16 Internal ply adhesion . 11
17 Shrinkage . 12

Figure 1 – Measuring principle for the determination of the flexibility . 13
Figure 2 – Measuring device for the determination of the flexibility . 13
Figure 3 – Ply adhesion testing jig . 14

Table 1 – Conditioning time . 7
Table 2 – Drying time . 7

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
VULCANIZED FIBRE
FOR ELECTRICAL PURPOSES –
Part 2: Methods of test
FOREWORD
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International Standard IEC 60667-2 has been prepared by IEC Technical Committee 15: Solid
electrical insulating materials.
This second edition cancels and replaces the first edition published in 1982. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) added Terms and definitions
b) added General notes on tests
c) added Thickness instead of dimension
d) changed Apparent density from Density
e) added Arc resistance
f) deleted Sulphate content
g) added method (Bending) for flexibility

– 4 – IEC 60667-2:2020 © IEC 2020
h) changed test method for internal ply adhesion
i) added Shrinkage
The text of this International Standard is based on the following documents:
FDIS Report on voting
15/911/FDIS 15/919/RVD
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 60667 series, published under the general title Vulcanized fibre for
electrical purposes, can be found on the IEC website.
Future standards in this series will carry the new general title as cited above. Titles of existing
standards in this series will be updated at the time of the next edition.
The committee has decided that the contents of this document will remain unchanged until the
stability indicated on the IEC website under "http://webstore.iec.ch" in the data related to the
specific
...