IEC 60112:2003+AMD1:2009 CSV

Method for the determination of the proof and the comparative tracking indices of solid insulating materials

IEC 60112:2003+A1:2009 Specifies the method of test for the determination of the proof and comparative tracking indices of solidinsulating materials on pieces taken from parts of equipment and on plaques of material using alternating voltages. The standard provides for the determination of erosion when required. Test results cannot be used directly for the evaluation of safe creepage distances when designing electrical apparatus. Has the status of a basic safety publication in accordance with IEC Guide 104. Major changes since the previous edition are the following: The selection of a material for a specific application frequently involves compromises in the levels of the individual properties and test criteria. In the previous edition of IEC 60112 the test criteria required "no burning of the specimen", but this gave rise to two issues:
- difficulties in the identification of burning which includes all types of combustion, e.g. flaming, and smouldering in the situation where scintillations had occurred giving rise in many cases to carbon on the surface of the specimen, and
- a situation in which some product committees had found it necessary to dispense with the "no burning" criterion in the tracking tests which they replaced by flame tests on the final product, thereby giving rise to two types of CTI/PTI with different criteria.
The contents of the corrigenda of June 2003 and October 2003 have been included in this copy. This consolidated version consists of the fourth edition (2003) and its amendment 1 (2009). Therefore, no need to order amendment in addition to this publication.

Méthode de détermination des indices de résistance et de tenue au cheminement des matériaux isolants solides

La CEI 60112:2003+A1:2009 Spécifie la méthode d'essai pour déterminer les 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 des tensions alternatives. Cette norme détermine la valeur de l'érosion quand cela est demandé. Les résultats d'essai ne peuvent pas être utilisés directement tels quels pour évaluer les lignes de fuite de sécurité lors de la conception des appareils électriques. A le statut de publication fondamentale de sécurité, conformément au Guide CEI 104. Les modifications majeures par rapport à l'édition précédente sont celles qui suivent: Le choix d'un matériau pour une application spécifique implique fréquemment des compromis au niveau des propriétés individuelles et des critères d'essai. Dans la précédente édition de la CEI 60112, les critères d'essai requéraient «aucun brûlage de l'éprouvette» mais cela a induit deux problèmes:
- des difficultés pour différencier le brûlage qui comprend tous les types de combustion, par exemple flammes, et la combustion lente dans une situation où des étincelages se produisent, entraînant une carbonisation à la surface de l'éprouvette, et
- une situation dans laquelle certains comités de produit ont trouvé nécessaire de se dispenser du critère «aucun brûlage», pour les essais de cheminement, critère qu'ils ont remplacé par les essais de flamme sur le produit final, faisant ainsi apparaître deux types de IRC/ITC avec des critères différents. Le contenu des corrigenda de juin 2003 et octobre 2003 a été pris en considération dans cet exemplaire.  Cette version consolidée comprend la quatrième édition (2003) et son amendement 1 (2009). Il n'est donc pas nécessaire de commander l'amendement avec cette publication.

General Information

• Status: Published
• Publication Date: 12-Oct-2009
• ICS: 19.080 - Electrical and electronic testing
• ICS: 29.035.01 - Insulating materials in general
• Technical Committee: TC 112 - Evaluation and qualification of electrical insulating materials and systems
• Current Stage: DELPUB - Deleted Publication
• Completion Date: 28-Oct-2020

Standards Content (Sample)

IEC 60112 ®
Edition 4.1 2009-10
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
IEC 60112:2003+A1:2009
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IEC 60112 ®
Edition 4.1 2009-10
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
PRICE CODE
INTERNATIONALE
CF
CODE PRIX
ICS 19.080; 29.035.01 ISBN 978-2-88910-059-0
– 2 – 60112 © IEC:2003+A1:2009
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. 9
7.5 Test specimen support platform.10
7.6 Electrode assembly installation.10
8 Basic test procedure.10
8.1 General.10
8.2 Preparation.10
8.3 Test procedure.11
9 Determination of erosion.11
10 Determination of proof tracking index (PTI) .11
10.1 Procedure.11
10.2 Report.12
11 Determination of comparative tracking index (CTI) .12
11.1 General.12
11.2 Determination of the 100 drop point.12
11.3 Determination of the maximum 50 drop withstand voltage .13
11.4 Report.14

Annex A (informative) List of factors that should be considered by product committees .18
Annex B (informative) Electrode material selection .19

Bibliography.20

Figure 1 – Electrode .16
Figure 2 – Electrode / specimen arrangement .16
Figure 3 – Example of typical electrode mounting and specimen support .17
Figure 4 – Example of test circuit.17

60112 © IEC:2003+A1:2009 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
METHOD FOR THE DETERMINATION OF THE PROOF
AND THE COMPARATIVE TRACKING INDICES
OF SOLID INSULATING MATERIALS
FOREWORD
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International Standard IEC 60112 has been prepared by subcommittee 15E: Methods of test,
of IEC technical committee 15: Insulating materials.
This consolidated version of IEC 60112 consists of the fourth edition (2003) [documents
15E/209/FDIS and 15E/213/RVD], its amendment 1 (2009) [documents 112/116/CDV and
112/130/RVC] and its corrigenda of June 2003 and October 2003.
The technical content is therefore identical to the base edition and its amendment and has
been prepared for user convenience.
It bears the edition number 4.1.
A vertical line in the margin shows where the base publication has been modified by
amendment 1.
– 4 – 60112 © IEC:2003+A1:2009
Major changes since the previous edition are the following:
The selection of a material for a specific application frequently involves compromises in the
levels of the individual properties and test criteria. In the previous edition of IEC 60112 the
test criteria required "no burning of the specimen", but this gave rise to two issues:
– difficulties in the identification of burning which includes all types of combustion, e.g.
flaming, and smouldering in the situation where scintillations had occurred giving rise in
many cases to carbon on the surface of the specimen, and
– a situation in which some product committees had found it necessary to dispense with the
"no burning
...