EN IEC 60667-2:2020

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

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

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.

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

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

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

– 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 Direc
...