EN 61857-21:2004

Electrical insulation systems - Procedures for thermal evaluation - Part 21: Specific requirements for general-purpose models - Wire-wound applications

Describes a general-purpose model (GPM) and a tall channel alternative model (GPM-TC) which can be used for the evaluation of wire-wound EIS where specific electrotechnical products are not available or required. This edition constitutes a technical revision by merging Part 23 into Part 21.

Elektrische Isoliersysteme - Verfahren zur thermischen Bewertung - Teil 21: Spezielle Bedingungen für Mehrzweckmodelle - Anwendungen bei Drahtwicklungen

Systèmes d'isolation électriques - Procédures d'évaluation thermique - Partie 21: Exigences particulières pour les modèles d'usage général - Applications aux enroulements à fil

Décrit un modèle d'usage général (GPM) et un modèle alternatif à chemin haut (GPM-TC) qui peuvent être utilisés pour évaluer les SIE à enroulements à fil quand les produits électrotechniques spécifiques ne sont pas disponibles ou pas requis. La présente édition constitue une révision technique en fusionnant les Parties 23 et 21.

Sistemi električne izolacije – Postopki za toplotno vrednotenje – 21. del: Posebne zahteve za modele za splošno/večnamensko uporabo – Uporaba pri žičnih navitjih

General Information

• Status: Withdrawn
• Publication Date: 15-Nov-2004
• Withdrawal Date: 30-Sep-2007
• ICS: 29.080.30 - Insulation systems
• Technical Committee: CLC/SR 112 - Evaluation and qualification of electrical insulating materials and systems (to be defined)
• Drafting Committee: IEC/TC 112 - IEC_TC_112
• Parallel Committee: IEC/TC 98 - IEC_TC_98
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Start Date: 01-Jun-2012
• Completion Date: 01-Jun-2012
• Ref Project: SIST EN 61857-21:2005 - Electrical insulation systems - Procedures for thermal evaluation -- Part 21: Specific requirements for general-purpose models - Wire-wound applications

Relations

• Replaces: EN 61857-23:2002 - Electrical insulation systems - Procedures for thermal evaluation - Part 23: Specific requirements for general purpose, tall-channel model - Wire-wound electrical insulation systems (EIS)
• Effective Date: 29-Jan-2023
• Replaces: EN 61857-21:1999 - Electrical insulation systems - Procedures for thermal evaluation - Part 21: Specific requirements for general-purpose model - Wire-wound applications
• Effective Date: 29-Jan-2023
• Replaced By: EN 61857-21:2009 - Electrical insulation systems - Procedures for thermal evaluation - Part 21: Specific requirements for general-purpose models - Wire-wound applications
• Effective Date: 29-Jan-2023

Standards Content (Sample)

SLOVENSKI SIST EN 61857-21:2005

STANDARD
julij 2005
Sistemi električne izolacije – Postopki za toplotno vrednotenje – 21. del:
Posebne zahteve za modele za splošno/večnamensko uporabo – Uporaba pri
žičnih navitjih
Electrical insulation systems – Procedures for thermal evaluation – Part 21: Specific
requirements for general-purpose models – Wire-wound applications
ICS 29.080.30 Referenčna številka
SIST EN 61857-21:2005(en)
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

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EUROPEAN STANDARD EN 61857-21
NORME EUROPÉENNE
EUROPÄISCHE NORM November 2004

ICS 29.080.30 Supersedes EN 61857-21:1999 & EN 61857-23:2002


English version


Electrical insulation systems –
Procedures for thermal evaluation
Part 21: Specific requirements for general-purpose models –
Wire-wound applications
(IEC 61857-21:2004)


Systèmes d'isolation électriques - Elektrische Isoliersysteme –
Procédures d'évaluation thermique Verfahren zur thermischen Bewertung
Partie 21: Exigences particulières Teil 21: Spezielle Bedingungen für
pour les modèles d'usage général - Mehrzweckmodelle –
Applications aux enroulements à fil Anwendungen bei Drahtwicklungen
(CEI 61857-21:2004) (IEC 61857-21:2004)


This European Standard was approved by CENELEC on 2004-10-01. 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


© 2004 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 61857-21:2004 E

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EN 61857-21:2004 - 2 -
Foreword
The text of document 98/214/FDIS, future edition 2 of IEC 61857-21, prepared by IEC TC 98,
Electrical insulation systems (EIS), was submitted to the IEC-CENELEC parallel vote and was
approved by CENELEC as EN 61857-21 on 2004-10-01.
This European Standard supersedes EN 61857-21:1999 and EN 61857-23:2002 and constitutes a
technical revision by merging Part 23 into Part 21.
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) 2005-07-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2007-10-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 61857-21:2004 was approved by CENELEC as a European
Standard without any modification.
__________

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- 3 - EN 61857-21:2004
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
IEC 60455 Series Resin based reactive compounds used HD 307 Series
for electrical insulation EN 60455 Series

IEC 60464 Series Varnishes used for electrical insulation EN 60464 Series

1) 2)
IEC 60505 - Evaluation and qualification of electrical EN 60505 2000
insulation systems

1) 2)
IEC 61857-1 - Electrical insulation systems - Procedures EN 61857-1 1999
for thermal evaluation
Part 1: General requirements - Low-
voltage




1)
Undated reference.
2)
Valid edition at d
...