IEC 60893-2:2023

Insulating materials - Industrial rigid laminated sheets based on thermosetting resins for electrical purposes - Part 2: Methods of test

IEC 60893-2:2023 describes methods of test for the materials defined in IEC 60893-1 (referred to also as Part 1). This third edition cancels and replaces the second edition published in 2003. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) removal of reference to withdrawn specification IEC 60167:1964;
b) inclusion of reference to IEC 62631-3-3:2015, which supersedes IEC 60167:1964. Details in 6.3 have been updated accordingly. The actual performance of the test has not changed;
c) normative references have been updated.

Matériaux isolants - Stratifiés industriels rigides en planches à base de résines thermodurcissables à usages électriques - Partie 2: Méthodes d'essai

L'IEC 60893-2:2023 décrit les méthodes d'essai applicables aux matériaux définis dans l'IEC 60893-1 (également désignée sous le nom de Partie 1). Cette troisième édition annule et remplace la deuxième édition parue en 2003. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) la référence à la spécification IEC 60167:1964, qui a été annulée, a été supprimée;
b) des références à l'IEC 62631-3-3:2015, qui remplace l'IEC 60167:1964, ont été ajoutées. Le contenu du 6.3 a été mis à jour en conséquence. La procédure d'essai n'a pas changé;
c) les références normatives ont été mises à jour.

General Information

• Status: Published
• Publication Date: 12-Nov-2023
• ICS: 29.035.01 - Insulating materials in general
• Technical Committee: TC 15 - Solid electrical insulating materials
• Drafting Committee: WG 6 - TC 15/WG 6
• Current Stage: PPUB - Publication issued
• Start Date: 15-Dec-2023
• Completion Date: 13-Nov-2023

Relations

• Revises: IEC 60893-2:2003 - Industrial rigid laminated sheets based on thermosetting resins for electrical purposes - Part 2: Methods of test
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60893-2 ®
Edition 3.0 2023-11
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Insulating materials – Industrial rigid laminated sheets based on thermosetting
resins for electrical purposes –
Part 2: Methods of test
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

IEC Secretariat Tel.: [phone]
3, rue de Varembé [e-mail]
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.

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IEC 60893-2 ®
Edition 3.0 2023-11
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Insulating materials – Industrial rigid laminated sheets based on thermosetting
resins for electrical purposes –
Part 2: Methods of test
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.035.01  ISBN 978-2-8322-7858-1
– 2 – IEC 60893-2:2023 RLV © IEC 2023
CONTENTS
FOREWORD . 5
INTRODUCTION . 2
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 8
4 Conditioning of test specimens . 10
5 Dimensions. 10
5.1 Thickness . 10
5.1.1 General . 10
5.1.2 Test apparatus for reference method . 10
5.1.3 Procedure for reference method . 10
5.1.4 Results . 11
5.2 Flatness . 11
5.2.1 General . 11
5.2.2 Test specimens . 11
5.2.3 Test method . 11
5.2.4 Results . 11
6 Mechanical tests . 11
6.1 Flexural strength . 11
6.1.1 General . 11
6.1.2 Test specimens . 11
6.1.3 Test method . 11
6.1.4 Results . 12
6.2 Modulus of elasticity in flexure . 12
6.2.1 General . 12
6.2.2 Test specimens . 12
6.2.3 Test method . 12
6.2.4 Results . 12
6.3 Compressive strength . 12
6.3.1 General . 12
6.3.2 Test specimens . 12
6.3.3 Test method . 12
6.3.4 Results . 12
6.4 Impact strength . 12
6.4.1 General . 12
6.4.2 Charpy Impact strength . 12
6.4.3 Izod impact strength . 13
6.5 Shear strength parallel to laminations . 13
6.5.1 General . 13
6.5.2 Test specimens . 13
6.5.3 Test method . 14
6.5.4 Results . 14
6.6 Tensile strength . 14
6.6.1 General . 14
6.6.2 Test specimens . 14
6.6.3 Test method . 14

6.6.4 Results . 14
7 Electrical tests . 15
7.1 Electric strength and breakdown voltage . 15
7.1.1 General . 15
7.1.2 Test specimens . 15
7.1.3 Test method . 15
7.2 Permittivity and dissipation factor . 15
7.2.1 General requirements . 15
7.2.2 Methods . 16
7.2.3 Principles of the methods . 16
7.2.4 Measuring instruments. 17
7.2.5 Method A: Direct measurement technique . 17
7.2.6 Method B: Air substitution technique . 20
7.2.7 Method C: Two fluid immersion technique . 22
7.2.8 Test report . 25
7.3 Insulation resistance after immersion in water . 26
7.3.1 General . 26
7.3.2 Test specimens . 26
7.3.3 Test method . 26
7.3.4 Results . 26
7.4 Comparative and proof tracking indices . 26
7.4.1 General . 26
7.4.2 Test specimens . 26
7.4.3 Test method . 27
7.4.4 Results . 27
7.5 Tracking and erosion resistance . 27
7.5.1 General . 27
7.5.2 Test specimens . 27
7.5.3 Test method . 27
7.5.4 Results . 27
8 Thermal tests . 27
8.1 Thermal endurance . 27
8.1.1 General . 27
8.1.2 Test specimens . 27
8.1.3 Test method . 27
8.1.4 Results . 27
8.2 Flammability . 28
8.2.1 General . 28
8.2.2 Test specimens . 28
8.2.3 Test method . 28
8.2.4 Results . 28
9 Other tests . 28
9.1 Density . 28
9.1.1 General . 28
9.1.2 Test specimens . 28
9.1.3 Test method . 28
9.1.4 Results . 28
9.2 Water absorption . 28
9.2.1 General .
...

IEC 60893-2 ®
Edition 3.0 2023-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Insulating materials – Industrial rigid laminated sheets based on thermosetting
resins for electrical purposes –
Part 2: Methods of test
Matériaux isolants – Stratifiés industriels rigides en planches à base de résines
thermodurcissables à usages électriques –
Partie 2: Méthodes d'essai
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite ni
utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie et
les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des
questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.

IEC Secretariat Tel.: [phone]
3, rue de Varembé [e-mail]
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.

IEC publications search - webstore.iec.ch/advsearchform IEC Products & Services Portal - products.iec.ch
The advanced search enables to find IEC publications by a Discover our powerful search engine and read freely all the
variety of criteria (reference number, text, technical publications previews. With a subscription you will always have
committee, …). It also gives information on projects, replaced access to up to date content tailored to your needs.
and withdrawn publications.
Electropedia - www.electropedia.org
IEC Just Published - webstore.iec.ch/justpublished
The world's leading online dictionary on electrotechnology,
Stay up to date on all new IEC publications. Just Published
containing more than 22 300 terminological entries in English
details all new publications released. Available online and once
and French, with equivalent terms in 19 additional languages.
a month by email.
Also known as the International Electrotechnical Vocabulary

(IEV) online.
IEC Customer Service Centre - webstore.iec.ch/csc

If you wish to give us your feedback on this publication or need
further assistance, please contact the Customer Service
Centre: [e-mail].
A propos de l'IEC
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IEC 60893-2 ®
Edition 3.0 2023-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Insulating materials – Industrial rigid laminated sheets based on thermosetting

resins for electrical purposes –

Part 2: Methods of test
Matériaux isolants – Stratifiés industriels rigides en planches à base de résines

thermodurcissables à usages électriques –

Partie 2: Méthodes d'essai
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.035.01  ISBN 978-2-8322-7825-3

– 2 – IEC 60893-2:2023 © IEC 2023
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 9
4 Conditioning of test specimens . 10
5 Dimensions. 10
5.1 Thickness . 10
5.1.1 General . 10
5.1.2 Test apparatus for reference method . 10
5.1.3 Procedure for reference method . 10
5.1.4 Results . 10
5.2 Flatness . 10
5.2.1 General . 10
5.2.2 Test specimens . 10
5.2.3 Test method . 11
5.2.4 Results . 11
6 Mechanical tests . 11
6.1 Flexural strength . 11
6.1.1 General . 11
6.1.2 Test specimens . 11
6.1.3 Test method . 11
6.1.4 Results . 11
6.2 Modulus of elasticity in flexure . 11
6.2.1 General . 11
6.2.2 Test specimens . 12
6.2.3 Test method . 12
6.2.4 Results . 12
6.3 Compressive strength . 12
6.3.1 General . 12
6.3.2 Test specimens . 12
6.3.3 Test method . 12
6.3.4 Results . 12
6.4 Impact strength . 12
6.4.1 General . 12
6.4.2 Charpy Impact strength . 12
6.4.3 Izod impact strength . 13
6.5 Shear strength parallel to laminations . 13
6.5.1 General . 13
6.5.2 Test specimens . 13
6.5.3 Test method . 14
6.5.4 Results . 14
6.6 Tensile strength . 14
6.6.1 General . 14
6.6.2 Test specimens . 14
6.6.3 Test method . 14

6.6.4 Results . 14
7 Electrical tests . 14
7.1 Electric strength and breakdown voltage . 14
7.1.1 General . 14
7.1.2 Test specimens . 15
7.1.3 Test method . 15
7.2 Permittivity and dissipation factor . 15
7.2.1 General requirements . 15
7.2.2 Methods . 16
7.2.3 Principles of the methods . 16
7.2.4 Measuring instruments. 17
7.2.5 Method A: Direct measurement technique . 17
7.2.6 Method B: Air substitution technique . 19
7.2.7 Method C: Two fluid immersion technique . 22
7.2.8 Test report . 25
7.3 Insulation resistance after immersion in water . 26
7.3.1 General . 26
7.3.2 Test specimens . 26
7.3.3 Test method . 26
7.3.4 Results . 26
7.4 Comparative and proof tracking indices . 26
7.4.1 General . 26
7.4.2 Test specimens . 26
7.4.3 Test method . 26
7.4.4 Results .
...