EN 61858:2005
(Main)Electrical insulation systems - Thermal evaluation of modifications to an established wire-wound EIS
Electrical insulation systems - Thermal evaluation of modifications to an established wire-wound EIS
Lists the required test procedures for qualification of modifications of an established electrical insulation system (EIS) with respect to its thermal classification. This standard is applicable to EIS used in wire-wound electrotechnical devices. The test procedures are comparative in that the performance of a candidate EIS is compared to that of a reference EIS, which has proven service experience in accordance with EN 60791 or has been evaluated by one of the procedures given in the EN 61857 series. This second edition cancels and replaces the first edition, published in 1999, and constitutes a technical revision that incorporates test procedures referenced in EN 60034-18-22.
Elektrische Isoliersysteme - Thermische Bewertung von Veränderungen an einem erprobten, drahtgewickelten EIS
Systèmes d'isolation électrique - Evaluation thermique des modifications apportées à un système d'isolation électrique éprouvé à enroulements à fil
Indique les procédures d'essai requises pour la qualification des modifications qui ont été apportées à un système d'isolation électrique éprouvé (SIE), pour ce qui concerne sa classification thermique. Cette norme s'applique aux systèmes d'isolation électrique existant dans les dispositifs électrotechniques à enroulements à fils. Les procédures d'essai se font par comparaison des performances d'un système d'isolation électrique candidat avec celles d'un système d'isolation électrique de référence dont l'expérience en service a été démontrée conformément à la EN 60791, ou qui a été évaluée par une des procédures décrites dans la série 61857.Cette deuxième édition annule et remplace la première édition, publiée en 1999, et constitue une révision technique qui inclut des procédures d'essai référencées dans la EN 60034-18-22.
Sistemi električne izolacije – Toplotno vrednotenje sprememb preverjenega EIS z žičnim navitjem
General Information
Relations
Standards Content (Sample)
SLOVENSKI SIST EN 61858:2005
STANDARD
julij 2005
Sistemi električne izolacije – Toplotno vrednotenje sprememb preverjenega
EIS z žičnim navitjem
Electrical insulation systems – Thermal evaluation of modifications to an established
wire-wound EIS
ICS 29.080.30 Referenčna številka
© Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno
EUROPEAN STANDARD EN 61858
NORME EUROPÉENNE
EUROPÄISCHE NORM March 2005
ICS 29.080.30 Supersedes EN 61858:2000
English version
Electrical insulation systems –
Thermal evaluation of modifications to an established wire-wound EIS
(IEC 61858:2004)
Systèmes d'isolation électrique - Elektrische Isoliersysteme –
Evaluation thermique des modifications Thermische Bewertung von
apportées à un système d'isolation Veränderungen an einem erprobten,
électrique éprouvé à enroulements à fil drahtgewickelten EIS
(CEI 61858:2004) (IEC 61858:2004)
This European Standard was approved by CENELEC on 2005-02-01. 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, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, 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
© 2005 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61858:2005 E
Foreword
The text of document 98/221/FDIS, future edition 2 of IEC 61858, prepared by IEC TC 98, Electrical
insulation systems (EIS), was submitted to the IEC-CENELEC parallel vote and was approved by
CENELEC as EN 61858 on 2005-02-01.
This European Standard supersedes EN 61858:2000.
It constitutes a technical revision that incorporates test procedures referenced in EN 60034-18-22.
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) 2005-11-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2008-02-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 61858:2004 was approved by CENELEC as a European
Standard without any modification.
__________
- 3 - EN 61858:2005
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following referenced documents are indispensable for the application 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 Where an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
1) 2)
IEC 60172 - Test procedure for the determination of EN 60172 1994
the temperature index of enamelled
winding wires
1) 2)
IEC 60216-5 - Electrical insulating materials - Thermal EN 60216-5 2003
endurance properties
Part 5: Determination of relative thermal
endurance index (RTE) of an insulating
material
IEC 60317 Series Specifications for particular types of EN 60317 Series
winding wires
1) 2)
IEC 60505 - Evaluation and qualification of electrical EN 60505 2004
insulation systems
1)
IEC 60791 - Performance evaluation of insulation - -
systems based on service experience and
functional tests
1)
IEC 61033 - Test methods for the determination of - -
bond strength of impregnating agents to
an enamelled wire substrate
IEC 61857 Series Electrical insulation systems - Procedures EN 61857 Series
for thermal evaluation
1) 2)
IEC 61857-1 - Electrical insulation systems - Procedures EN 61857-1 2005
for thermal evaluation
Part 1: General requirements - Low-
voltage
1) 2)
IEC 62114 - Electrical insulation systems (EIS) - EN 62114 2001
Thermal classification
1)
Undated reference.
2)
Valid edition at date of issue.
NORME CEI
INTERNATIONALE IEC
INTERNATIONAL
Deuxième édition
STANDARD
Second edition
2004-11
Systèmes d'isolation électrique –
Evaluation thermique des modifications apportées
à un système d'isolation électrique éprouvé
à enroulements à fil
Electrical insulation systems –
Thermal evaluation of modifications to
an established wire-wound EIS
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61858 © IEC:2004 – 3 –
CONTENTS
FOREWORD.5
INTRODUCTION.9
1 Scope.11
2 Normative references .11
3 Terms and definitions .13
4 General considerations.13
5 Evaluation of the change of thickness of an EIM.17
5.1 Samples .17
5.2 Acceptance .17
6 Substitution of winding wire .17
6.1 General .17
6.2 Substitution of enamel.17
6.3 Substitution of conductor material .17
6.4 Alternate winding wire .19
7 Substitution of impregnating resin/varnish .19
7.1 Thermal class determination.19
7.2 Evaluation .19
8 Substitution with other EIM.21
8.1 Technically equivalent materials.21
8.2 Previous evaluation .21
8.3 Other.21
9 Evaluation of additions .21
9.1 Addition of an impregnating resin/varnish .21
9.2 Addition of other components .23
10 Single-point thermal ageing test .23
10.1 Test objects.23
10.2 Establishing the relative thermal endurance index (RTE).23
10.3 Interpretation of results .25
Annex A (normative) Classes of winding wire.27
Annex B (normative) Compatibility test procedure.29
Figure 1 – Overview of evaluation methods.15
Table 1 – Thermal ageing test methods for resin/varnishes.19
Table A.1 – Winding wire types.27
61858 © IEC:2004 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRICAL INSULATION SYSTEMS –
THERMAL EVALUATION OF MODIFICATIONS TO
AN ESTABLISHED WIRE-WOUND EIS
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,
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agreement between the two organizations.
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consensus of opinion on the relevant subjects since each technical committee has representation from all
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61858 has been prepared by IEC technical committee 98:
Electrical insulation systems (EIS).
This second edition cancels and replaces the first edition, published in 1999, and constitutes
a technical revision that incorporates test procedures referenced in IEC 60034-18-22.
The text of this standard is based on the following documents:
FDIS Report on voting
98/221/FDIS 98/227/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
61858 © IEC:2004 – 7 –
The committee has decided that the contents of this publication will r
...
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