Electrical insulation systems - Thermal evaluation of modifications to an established electrical insulation system (EIS) - Part 2: Form-wound EIS

IEC 61858-2:2014 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 form-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 IEC 60505 or has been evaluated by one of the procedures given in IEC 60085 and IEC 60034-18-31.

Elektrische Isoliersysteme - Thermische Bewertung von Veränderungen an einem erprobten elektrischen Isoliersystem (EIS) - Teil 2: EIS mit Flachdraht-Wicklungen

Systèmes d'isolation électrique - Évaluation thermique des modifications apportées à un système d’isolation électrique (SIE) éprouvé - Partie 2: Système d’isolation électrique à enroulements préformés

L'IEC 61858-2:2014 énumère les procédures d'essai requises pour la qualification des modifications qui ont été apportées à un système d'isolation électrique (SIE) éprouvé, pour ce qui concerne sa classification thermique. La présente norme s'applique aux SIE utilisés dans les dispositifs électrotechniques à enroulements préformés. Les procédures d'essai sont comparatives en ce qu'elles se font par comparaison des performances d'un SIE candidat avec celles d'un SIE de référence dont l'expérience en service a été démontrée conformément à l'IEC 60505, ou qui a été évalué par l'une des procédures décrites dans l'IEC 60085 et l'IEC 60034-18-31.

Sistemi električne izolacije - Toplotno vrednotenje sprememb preverjenega sistema električne izolacije z EIS - 2. del: Predhodno oblikovana navitja EIS (IEC 61858-2:2014)

Standard EN IEC 61858-2 navaja seznam zahtevanih preskusnih postopkov za kvalificiranje sprememb preverjenega sistema električne izolacije (EIS) z upoštevanjem njegove toplotne klasifikacije. Ta standard se uporablja za EIS, uporabljene v elektrotehničnih napravah s predhodno oblikovanimi navitji. Preskusni postopki so primerjalni do te mere, da se delovanje kandidatnega EIS primerja z delovanjem referenčnega EIS, ki ima dokazane izkušnje pri uporabi v skladu s standardom IEC 60505 ali je bil ovrednoten z enim od postopkov, določenih v standardih IEC 60085 in IEC 60034-18-31.

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SIST EN 61858-2:2014

Electrical insulation systems - Thermal evaluation of modifications to an established EIS-
Part-2: Form-wound EIS
Ta slovenski standard je istoveten z: EN 61858-2:2014
29.080.30 Izolacijski sistemi Insulation systems
SIST EN 61858-2:2014 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 61858-2:2014

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SIST EN 61858-2:2014



May 2014
ICS 29.080.30

English Version
Electrical insulation systems - Thermal evaluation of
modifications to an established electrical insulation system (EIS)
- Part 2: Form-wound EIS
(IEC 61858-2:2014)
Systèmes d'isolation électrique - Évaluation thermique des Elektrische Isoliersysteme - Thermische Bewertung von
modifications apportées à un système d'isolation électrique Veränderungen an einem erprobten elektrischen
(SIE) éprouvé - Partie 2: Système d'isolation électrique à Isoliersystem (EIS) - Teil 2: EIS mit Flachdraht-Wicklungen
enroulements préformés (IEC 61858-2:2014)
(CEI 61858-2:2014)
This European Standard was approved by CENELEC on 2014-03-19. 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, 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: Avenue Marnix 17, B-1000 Brussels
© 2014 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
 Ref. No. EN 61858-2:2014 E

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SIST EN 61858-2:2014
EN 61858-2:2014 - 2 -
The text of document 112/253/CDV, future edition 1 of IEC 61858-2, 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 61858-2:2014.

The following dates are fixed:
(dop) 2014-12-19
• latest date by which the document has to be
implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2017-03-19
standards conflicting with the
document have to be withdrawn

Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.

Endorsement notice
The text of the International Standard IEC 61858-2:2014 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 60172 NOTE Harmonized as EN 60172.

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SIST EN 61858-2:2014
- 3 - EN 61858-2:2014
Annex ZA

Normative references to international publications
with their corresponding European publications

The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.

NOTE  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD

Publication Year Title EN/HD Year

IEC 60034-18-31 2012 Rotating electrical machines - EN 60034-18-31 2012
Part 18-31: Fu

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