EN IEC 60112:2020
(Main)Method for the determination of the proof and the comparative tracking indices of solid insulating materials
Method for the determination of the proof and the comparative tracking indices of solid insulating materials
IEC 60112:2020 specifies the method of test for the determination of the proof and comparative tracking indices of solid insulating materials on pieces taken from parts of equipment and on plaques of material using alternating voltage. This document provides a procedure for the determination of erosion when required. This test method evaluates the composition of the material as well as the surface of the material being evaluated. Both the composition and surface condition directly influence the results of the evaluation and are considered when using the results in material selection process. Test results are not directly suitable for the evaluation of safe creepage distances when designing electrical apparatus. This basic safety publication focusing on a safety test method is primarily intended for use by technical committees in the preparation of safety publications in accordance with the principles laid down in IEC Guide 104 and lSO/lEC Guide 51. This edition includes the following significant technical changes with respect to the previous edition:
Introduction of a new contaminant, solution C with a surfactant aligned with the test method of IEC 60587. The definition of the solution B was transferred to Annex B for backward reference.
Introduction of a screening test, considering the fact that some materials can withstand high test voltages, but fail at lower test voltages. It has the status of a basic safety publication in accordance with IEC Guide 104.
Verfahren zur Bestimmung der Prüfzahl und der Vergleichszahl der Kriechwegbildung von festen, isolierenden Werkstoffen
Méthode de détermination des indices de résistance et de tenue au cheminement des matériaux isolants solides
L'IEC 60112:2020 spécifie la méthode d’essai pour la détermination des indices de résistance et de tenue au cheminement des matériaux isolants solides sur des échantillons prélevés sur des parties d'équipement et des plaques de matériau en utilisant une tension alternative. Le présent document fournit une procédure pour la détermination de la valeur de l’érosion quand cela est exigé. Cette méthode d’essai évalue la composition et la surface du matériau soumis à l’essai. La composition et les conditions de surface influencent directement les résultats de l’évaluation et sont prises en considération lors de l’utilisation des résultats au moment de la sélection des matériaux. Les résultats d’essais tels quels ne sont pas adaptés à l’évaluation des lignes de fuite de sécurité lors de la conception des appareils électriques. La présente publication fondamentale de sécurité portant sur une méthode d’essai de sécurité est avant tout destinée à être utilisée par les comités d’études dans le cadre de l’élaboration de publications de sécurité, conformément aux principes établis dans le Guide IEC 104 et le Guide lSO/lEC 51. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
Introduction d’un nouveau contaminant, la solution C, avec un tensioactif aligné sur la méthode d’essai de l’IEC 60587. Transfert à l’Annexe B de la définition de la solution B pour référence arrière.
Introduction d’un essai de déverminage, en tenant compte du fait que certains matériaux peuvent supporter des tensions d’essai élevées, mais pas des tensions d’essai plus basses. Elle a le statut de publication fondamentale de sécurité, conformément au Guide IEC 104.
Metoda za ugotavljanje preskusnih in primerjalnih indeksov ustvarjanja prevodnih poti trdnih izolacijskih materialov (IEC 60112:2020)
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-februar-2021
Nadomešča:
SIST EN 60112:2004
SIST EN 60112:2004/A1:2010
Metoda za ugotavljanje preskusnih in primerjalnih indeksov ustvarjanja prevodnih
poti trdnih izolacijskih materialov (IEC 60112:2020)
Method for the determination of the proof and the comparative tracking indices of solid
insulating materials (IEC 60112:2020)
Verfahren zur Bestimmung der Prüfzahl und der Vergleichszahl der Kriechwegbildung
von festen, isolierenden Werkstoffen (IEC 60112:2020)
Méthode de détermination des indices de résistance et de tenue au cheminement des
matériaux isolants solides (IEC 60112:2020)
Ta slovenski standard je istoveten z: EN IEC 60112:2020
ICS:
29.035.01 Izolacijski materiali na Insulating materials in
splošno general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN IEC 60112
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2020
ICS 19.080; 29.035.01 Supersedes EN 60112:2003 and all of its amendments
and corrigenda (if any)
English Version
Method for the determination of the proof and the comparative
tracking indices of solid insulating materials
(IEC 60112:2020)
Méthode de détermination des indices de résistance et de Verfahren zur Bestimmung der Prüfzahl und der
tenue au cheminement des matériaux isolants solides Vergleichszahl der Kriechwegbildung von festen,
(IEC 60112:2020) isolierenden Werkstoffen
(IEC 60112:2020)
This European Standard was approved by CENELEC on 2020-12-02. 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 60112:2020 E
European foreword
The text of document 112/479/FDIS, future edition 5 of IEC 60112, prepared by IEC/TC 112
"Evaluation and qualification of electrical insulating materials and systems" was submitted to the IEC-
CENELEC parallel vote and approved by CENELEC as EN IEC 60112:2020.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2021-09-02
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2023-12-02
document have to be withdrawn
This document supersedes EN 60112:2003 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 60112:2020 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards
indicated:
IEC 60587 NOTE Harmonized as EN 60587
IEC 60664-1 NOTE Harmonized as EN IEC 60664-1
IEC 60212 NOTE Harmonized as EN 60212
ISO 293 NOTE Harmonized as EN ISO 293
ISO 294-1 NOTE Harmonized as EN ISO 294-1
ISO 294-3 NOTE Harmonized as EN ISO 294-3
ISO 295 NOTE Harmonized as EN ISO 295
ISO 3167 NOTE Harmonized as EN ISO 3167
ISO 3696 NOTE Harmonized as EN ISO 3696
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
ISO 4287 - Geometrical Product Specifications (GPS) - EN ISO 4287 -
Surface texture: Profile method - Terms,
definitions and surface texture parameters
IEC 60112 ®
Edition 5.0 2020-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
BASIC SAFETY PUBLICATION
PUBLICATION FONDAMENTALE DE SÉCURITÉ
Method for the determination of the proof and the comparative tracking indices
of solid insulating materials
Méthode de détermination des indices de résistance et de tenue
au cheminement des matériaux isolants solides
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 19.080; 29.035.01 ISBN 978-2-8322-8748-4
– 2 – IEC 60112:2020 © IEC 2020
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Principle . 7
5 Test specimen . 7
6 Test specimen conditioning . 8
6.1 Environmental conditioning . 8
6.2 Test specimen surface state . 8
7 Test apparatus . 8
7.1 Electrodes . 8
7.2 Test circuit . 9
7.3 Test solutions . 9
7.4 Dropping device . 10
7.5 Test specimen support platform . 10
7.6 Electrode assembly installation . 10
7.7 Conditioning chamber . 10
8 Basic test procedure . 11
8.1 General . 11
8.2 Preparation . 11
8.3 Test procedure . 11
9 Determination of erosion . 12
10 Proof tracking index test (PTI) . 12
10.1 Procedure . 12
10.2 Report. 12
11 Determination of comparative tracking index (CTI) . 13
11.1 General . 13
11.2 Screening test . 13
11.3 Determination of the maximum 50 drop withstand voltage . 14
11.4 Determination of the 100 drop point . 15
11.5 Report. 15
Annex A (informative) List of factors that should be considered by product committees . 19
Annex B (informative) Solution B . 20
Annex C (informative) Electrode material selection . 21
C.1 Platinum electrodes . 21
C.2 Alternatives . 21
Bibliography . 22
Figure 1 – Electrode . 17
Figure 2 – Electrode/specimen arrangement . 17
Figure 3 – Example of typical electrode mounting and specimen support . 17
Figure 4 – Example of test circuit . 18
IEC 60112:2020 © IEC 2020 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
METHOD FOR THE DETERMINATION OF THE PROOF AND THE
COMPARATIVE TRACKING INDICES OF SOLID INSULATING MATERIALS
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
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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,
...
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