Vulcanized fibre for electrical purposes - Part 2: Methods of test (IEC 60667-2:2020)

This part of IEC 60667 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.

Vulkanfiber für elektrotechnische Zwecke - Teil 2: Prüfverfahren (IEC 60667-2:2020)

Les fibres vulcanisées à usages électriques. Deuxième partie: Méthodes d'essai (IEC 60667-2:2020)

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".

Vulkanizirana vlakna za električne namene - 2. del: Preskusne metode (IEC 60667-2:2020)

General Information

Status
Published
Publication Date
19-Jul-2020
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
09-Jul-2020
Due Date
13-Sep-2020
Completion Date
20-Jul-2020

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SLOVENSKI STANDARD
SIST EN IEC 60667-2:2020
01-september-2020
Nadomešča:
SIST HD 416.2 S1:1998
Vulkanizirana vlakna za električne namene - 2. del: Preskusne metode (IEC 60667-
2:2020)

Vulcanized fibre for electrical purposes - Part 2: Methods of test (IEC 60667-2:2020)

Vulkanfiber für elektrotechnische Zwecke - Teil 2: Prüfverfahren (IEC 60667-2:2020)

Les fibres vulcanisées à usages électriques. Deuxième partie: Méthodes d'essai (IEC

60667-2:2020)
Ta slovenski standard je istoveten z: EN IEC 60667-2:2020
ICS:
29.035.10 Papirni in kartonski izolacijski Paper and board insulating
materiali materials
SIST EN IEC 60667-2:2020 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN IEC 60667-2:2020
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SIST EN IEC 60667-2:2020
EUROPEAN STANDARD EN IEC 60667-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2020
ICS 29.035.10 Supersedes HD 416.2 S1:1987 and all of its
amendments and corrigenda (if any)
English Version
Vulcanized fibre for electrical purposes - Part 2: Methods of test
(IEC 60667-2:2020)

Fibres vulcanisées à usages électriques - Partie 2: Vulkanfiber für elektrotechnische Zwecke - Teil 2:

Méthodes d'essai Prüfverfahren
(IEC 60667-2:2020) (IEC 60667-2:2020)

This European Standard was approved by CENELEC on 2020-06-17. 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the

Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, 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

© 2020 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN IEC 60667-2:2020 E
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SIST EN IEC 60667-2:2020
EN IEC 60667-2:2020 (E)
European foreword

The text of document 15/911/FDIS, future edition 2 of IEC 60667-2, prepared by IEC/TC 15 "Solid

electrical insulating materials" was submitted to the IEC-CENELEC parallel vote and approved by

CENELEC as EN IEC 60667-2:2020.
The following dates are fixed:

• latest date by which the document has to be implemented at national (dop) 2021-03-17

level by publication of an identical national standard or by endorsement

• latest date by which the national standards conflicting with the (dow) 2023-06-17

document have to be withdrawn

This document supersedes HD 416.2 S1:1987 and all of its amendments and corrigenda (if any).

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 60667-2:2020 was approved by CENELEC as a European

Standard without any modification.
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SIST EN IEC 60667-2:2020
EN IEC 60667-2:2020 (E)
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 60641-2 2004 Pressboard and presspaper for electrical EN 60641-2 2004
purposes - Part 2: Methods of tests

IEC 60667-3 series Vulcanized fibre for electrical purposes - Part 3: EN IEC 60667-3 series

Specifications for individual materials
IEC 61621 1997 Dry, solid insulating materials - Resistance test EN 61621 1997
to high-voltage, low-current arc discharges
ISO 178 2019 Plastics - Determination of flexural properties EN ISO 178 2019
ISO 287 2017 Paper and board - Determination of moisture EN ISO 287 2017
content of a lot - Oven-drying method
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SIST EN IEC 60667-2:2020
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SIST EN IEC 60667-2:2020
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

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
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SIST EN IEC 60667-2:2020
– 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

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SIST EN IEC 60667-2:2020
IEC 60667-2:2020 © IEC 2020 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
VULCANIZED FIBRE
FOR ELECTRICAL PURPOSES –
Part 2: Methods of test
FOREWORD

1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international

co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and

in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,

Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their

preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with

may participate in this preparatory work. International, governmental and non-governmental organizations liaising

with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for

Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.

2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international

consensus of opinion on the relevant subjects since each technical committee has representation from all

interested IEC National Committees.

3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

misinterpretation by any end user.

4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

transparently to the maximum extent possible in their national and regional publications. Any divergence between

any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.

5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity

assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any

services carried out by independent certification bodies.

6) All users should ensure that they have the latest edition of this publication.

7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and

members of its technical committees and IEC National Committees for any personal injury, property damage or

other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and

expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications.

8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

indispensable for the correct application of this publication.

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 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
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SIST EN IEC 60667-2:2020
– 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

electrica
...

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