SIST EN IEC 60112:2025
(Main)Method for the determination of the proof and the comparative tracking indices of solid insulating materials (IEC 60112:2025)
Method for the determination of the proof and the comparative tracking indices of solid insulating materials (IEC 60112:2025)
IEC 60112:2025 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. The proof tracking index is used as an acceptance criterion as well as a means for the quality control of materials and fabricated parts. The comparative tracking index is mainly used for the basic characterization and comparison of the properties of materials. 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. The described test method is designed for a test voltage up to 600 V AC, because higher test voltages and DC voltage will lead to a reduced test severity. Test results are not directly suitable for the evaluation of safe creepage distances when designing electrical apparatus. The results of this method have been used for insulation coordination of equipment. It is important that use of these results also considers the overvoltage levels, creepage distances, and establishes the pollution degree to which the product insulation system will be expected to be subjected. This is in compliance with IEC 60664-1. 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. One of the responsibilities of a technical committee is, wherever applicable, to make use of basic safety publications in the preparation of its publications. This sixth edition cancels and replaces the fifth edition published in 2020. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
- In 7.3, the term "resistivity" has been replaced by "conductivity".
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 (IEC 60112:2025)
Méthode de détermination des indices de résistance et de tenue au cheminement des matériaux isolants solides (IEC 60112:2025)
L'IEC 60112:2025 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. Il fournit une procédure pour la détermination de la valeur de l’érosion quand cela est exigé. L'indice de tenue au cheminement est utilisé comme critère d'acceptation ainsi que comme critère de contrôle de la qualité des matériaux et parties fabriquées. L'indice de résistance au cheminement est principalement utilisé pour effectuer la comparaison et la caractérisation de base des propriétés des matériaux. 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. La méthode d'essai décrite est conçue pour une tension d'essai jusqu'à 600 V en courant alternatif, car des tensions d'essai supérieures et une tension continue conduisent à une moindre sévérité d'essai. Les résultats d’essai tels quels ne sont pas adaptés à l’évaluation des lignes de fuite de sécurité lors de la conception des appareillages électriques. Les résultats de cette méthode ont été utilisés pour la coordination de l'isolement des matériels. Il est important que l’utilisation de ces résultats prenne également en considération les niveaux de surtension et les lignes de fuite et définisse le degré de pollution auquel il est prévu de soumettre le système de l’isolement du produit. Ceci est conforme à l’IEC 60664-1. La présente publication fondamentale de sécurité qui porte essentiellement sur une méthode d'essai de sécurité est principalement destinée à être utilisée par les comités d’études pour l’établissement de leurs publications de sécurité, conformément aux principes exposés dans le Guide IEC 104 et dans le Guide ISO/IEC 51. L'une des responsabilités d'un comité d'études consiste, le cas échéant, à utiliser les publications fondamentales de sécurité dans le cadre de l'élaboration de ses publications. Cette sixième édition annule et remplace la cinquième édition parue en 2020. Cette édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- Au 7.3, le terme "résistivité" a été remplacé par "conductivité".
Elle a le statut d’une publication fondamentale de sécurité conformément au Guide 104 de l'IEC.
Metoda za ugotavljanje preskusnih in primerjalnih indeksov ustvarjanja prevodnih poti trdnih izolacijskih materialov (IEC 60112:2025)
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-oktober-2025
Nadomešča:
SIST EN IEC 60112:2021
Metoda za ugotavljanje preskusnih in primerjalnih indeksov ustvarjanja prevodnih
poti trdnih izolacijskih materialov (IEC 60112:2025)
Method for the determination of the proof and the comparative tracking indices of solid
insulating materials (IEC 60112:2025)
Verfahren zur Bestimmung der Prüfzahl und der Vergleichszahl der Kriechwegbildung
von festen, isolierenden Werkstoffen (IEC 60112:2025)
Méthode de détermination des indices de résistance et de tenue au cheminement des
matériaux isolants solides (IEC 60112:2025)
Ta slovenski standard je istoveten z: EN IEC 60112:2025
ICS:
19.080 Električno in elektronsko Electrical and electronic
preskušanje testing
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 August 2025
ICS 29.035.01; 19.080 Supersedes EN IEC 60112:2020
English Version
Method for the determination of the proof and the comparative
tracking indices of solid insulating materials
(IEC 60112:2025)
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 60112:2025) isolierenden Werkstoffen
(IEC 60112:2025)
This European Standard was approved by CENELEC on 2025-07-28. 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,
Türkiye 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
© 2025 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 60112:2025 E
European foreword
The text of document 112/679/FDIS, future edition 6 of IEC 60112, prepared by 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 60112:2025.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2026-08-31
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2028-08-31
document have to be withdrawn
This document supersedes EN IEC 60112:2020 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.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 60112:2025 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 standard indicated:
IEC 60212 NOTE Approved as EN 60212
IEC 60587 NOTE Approved as EN IEC 60587
IEC 60664-1 NOTE Approved as EN IEC 60664-1
ISO 293 NOTE Approved as EN ISO 293
ISO 294-1 NOTE Approved as EN ISO 294-1
ISO 294-3 NOTE Approved as EN ISO 294-3
ISO 295 NOTE Approved as EN ISO 295
ISO 3167 NOTE Approved as EN ISO 3167
ISO 3696 NOTE Approved as EN ISO 3696
ISO 7888 NOTE Approved as EN 27888
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.cencenelec.eu.
Publication Year Title EN/HD Year
ISO 4287 - Geometrical Product Specifications (GPS) - -
- Surface texture: Profile method - Terms,
definitions and surface texture parameters
IEC 60112 ®
Edition 6.0 2025-06
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
ICS 19.080, 29.035.01 ISBN 978-2-8327-0492-9
IEC 60112:2025-06(en-fr)
IEC 60112:2025 © IEC 2025
CONTENTS
FOREWORD . 2
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Principle . 6
5 Test specimen . 6
6 Test specimen conditioning . 7
6.1 Environmental conditioning . 7
6.2 Test specimen surface state . 7
7 Test apparatus . 7
7.1 Electrodes . 7
7.2 Test circuit . 9
7.3 Test solutions . 10
7.4 Dropping device . 11
7.5 Test specimen support platform . 11
7.6 Electrode assembly installation . 12
7.7 Conditioning chamber . 12
8 Basic test procedure . 12
8.1 General . 12
8.2 Preparation . 12
8.3 Test procedure. 13
9 Determination of erosion. 13
10 Proof tracking index test (PTI) . 13
10.1 Procedure . 13
10.2 Report . 14
11 Determination of comparative tracking index (CTI). 15
11.1 General . 15
11.2 Screening test . 15
11.3 Determination of the maximum 50 drop withstand voltage . 15
11.4 Determination of the 100 drop point . 16
11.5 Report . 17
Annex A (informative) List of factors that should be considered by product committees . 18
Annex B (informative) Solution B . 19
Annex C (informative) Electrode material selection . 20
C.1 Platinum electrodes . 20
C.2 Alternatives . 20
Bibliography . 21
Figure 1 – Electrode . 8
Figure 2 – Electrode and specimen arrangement . 8
Figure 3 – Example of typical electrode mounting and specimen support . 9
Figure 4 – Example of test circuit . 10
IEC 60112:2025 © IEC 2025
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
Method for the determination of the proof and the comparative tracking
indices of solid insulating materials
FOREWORD
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