EN 60112:2003
(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
Describes a method of test intended to indicate the relative resistance of solid electrical insulating materials to tracking for voltages up to 600 V when exposed under electric stress to water with the addition of contaminants on the surface. 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
Donne une indication de la résistance relative au cheminement des isolants électriques solides aux tensions inférieures ou égales à 600 V lorsque leur surface est exposée, sous contrainte électrique, à l'action d'eau contenant des impuretés ioniques. A le statut d'une publication fondamentale de sécurité conformément au Guide 104
Metoda za ugotavljanje preskusnih in primerjalnih indeksov ustvarjanja prevodnih poti trdnih izolacijskih materialov (IEC 60112:2003)
Standard določa preskusno metodo z izmeničnimi napetostmi za ugotavljanje preskusnih in primerjalnih indeksov ustvarjanja prevodnih poti trdnih izolacijskih materialov na kosih, vzetih iz delov opreme, in na ploščah materiala. Standard po potrebi zagotavlja ugotavljanje erozije. Rezultatov preskusa ni mogoče uporabiti neposredno za vrednotenje varnih plazilnih razdalj pri projektiranju električnih naprav. Ima status osnovne varnostne publikacije v skladu z IEC Vodilom 104. Večje spremembe od prejšnje izdaje so naslednje: Izbor materiala za določeno uporabo pogosto vključuje kompromise glede ravni posameznih lastnosti in preskusnih meril. V prejšnji izdaji IEC 60112 so preskusna merila zahtevala, da se »vzorec ne sežiga«, vendar je to izpostavilo dve vprašanji:
– težave pri prepoznavanju gorenja, ki vključuje vse vrste zgorevanja, npr. plamtenje in tlenje, v primeru, da je prišlo do iskrenja, kar je pogosto povzročilo nastanek ogljika na površini vzorca, in
– nekateri odbori za proizvode so v nekaterih primerih ugotovili, da je treba odpraviti merilo »brez sežiganja« pri preskusih ustvarjanja prevodnih poti, in so ga nadomestili s preskusom z gorenjem končnega proizvoda, s čimer sta nastali dve vrsti CTI/PTI z različnimi merili.
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-april-2004
1DGRPHãþD
SIST HD 214 S2:1998
Metoda za ugotavljanje preskusnih in primerjalnih indeksov ustvarjanja prevodnih
poti trdnih izolacijskih materialov (IEC 60112:2003)
Method for the determination of the proof and the comparative tracking indices of solid
insulating materials
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
Ta slovenski standard je istoveten z: EN 60112:2003
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 60112
NORME EUROPÉENNE
EUROPÄISCHE NORM March 2003
ICS 19.080; 29.035.01 Supersedes HD 214 S2:1980
English version
Method for the determination of the proof
and the comparative tracking indices
of solid insulating materials
(IEC 60112:2003)
Méthode de détermination des indices Verfahren zur Bestimmung der Prüfzahl
de résistance et de tenue und der Vergleichszahl
au cheminement des matériaux isolants der Kriechwegbildung von festen,
solides isolierenden Werkstoffen
(CEI 60112:2003) (IEC 60112:2003)
This European Standard was approved by CENELEC on 2003-03-01. 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 Central Secretariat 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 Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,
Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta,
Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2003 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60112:2003 E
Foreword
The text of document 15E/209/FDIS, future edition 4 of IEC 60112, prepared by SC 15E, Methods of
test, of IEC TC 15, Insulating materials, was submitted to the IEC-CENELEC parallel vote and was
approved by CENELEC as EN 60112 on 2003-03-01.
This European Standard supersedes HD 214 S2:1980.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2003-12-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2006-03-01
Annexes designated "normative" are part of the body of the standard.
Annexes designated "informative" are given for information only.
In this standard, annex ZA is normative and annexes A and B are informative.
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60112:2003 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following note has to be added for the standard indicated:
IEC 60587 NOTE Harmonized as HD 380 S2:1987 (not modified).
__________
- 3 - EN 60112:2003
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of any
of these publications apply to this European Standard only when incorporated in it by amendment or
revision. For undated references the latest edition of the publication referred to applies (including
amendments).
NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
IEC 60589 1977 Methods of test for the determination of HD 381 S1 1979
ionic impurities in electrical insulating
materials by extraction with liquids
IEC Guide 104 1997 The preparation of safety publications - -
and the use of basic safety publications
and group safety publications
ISO 293 1986 Plastics - Compression moulding of test - -
specimens of thermoplastic materials
ISO 294-1 1996 Plastics - Injection moulding of test - -
specimens of thermoplastic materials
Part 1: General principles, and moulding
of multipurpose and bar test specimens
ISO 294-3 2002 Part 3: Small plates - -
ISO 295 1991 Plastics - Compression moulding of test - -
specimens of thermosetting materials
IEC 60112
Edition 4.0 2003-01
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
R
CODE PRIX
ICS 19.080; 29.035.01 ISBN 2-8318-6804-1
60112 © IEC:2003 – 3 –
CONTENTS
FOREWORD.5
1 Scope. 9
2 Normative references.9
3 Terms and definitions. 11
4 Principle. 13
5 Test specimen.13
6 Test specimen conditioning. 15
6.1 Environmental conditioning.15
6.2 Test specimen surface state. 15
7 Test apparatus.15
7.1 Electrodes.15
7.2 Test circuit.17
7.3 Test solutions.17
7.4 Dropping device.19
7.5 Test specimen support platform. 19
7.6 Electrode assembly installation.19
8 Basic test procedure.21
8.1 General.21
8.2 Preparation . 21
8.3 Test procedure.23
9 Determination of erosion.23
10 Determination of proof tracking index (PTI) . 23
10.1 Procedure.23
10.2 Report.25
11 Determination of comparative tracking index (CTI) . 25
11.1 General.25
11.2 Determination of the 100 drop point. 25
11.3 Determination of the maximum 50 drop withstand voltage . 27
11.4 Report.29
Annex A (informative) List of factors that should be considered by product committees . 37
Annex B (informative) Electrode material selection . 39
Bibliography. 41
Figure 1 – Electrode . 33
Figure 2 – Electrode / specimen arrangement . 33
Figure 3 – Example of typical electrode mounting and specimen support . 35
Figure 4 – Example of test circuit. 35
60112 © IEC:2003 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
METHOD FOR THE DETERMINATION OF THE PROOF
AND THE COMPARATIVE TRACKING INDICES
OF SOLID INSULATING MATERIALS
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the 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, the IEC publishes International Standards. 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. The 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 the 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 National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical specifications, technical reports or guides and they are accepted by the National
Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60112 has been prepared by subcommittee 15E: Methods of test,
of IEC technical committee 15: Insulating materials.
This fourth edition cancels and replaces the third edition, published in 1979, of which it
constitutes a technical revision.
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.
This standard attempts to regularize this situation.
It has the status of a basic safety publication in accordance with IEC Guide 104.
60112 © IEC:2003 – 7 –
The text of this standard is based on the following documents:
FDIS Report on voting
15E/209/FDIS 15E/213/RVD
...
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