EN 61858-1:2014

Electrical insulation systems - Thermal evaluation of modifications to an established electrical insulation system (EIS) - Part 1: Wire-wound winding EIS

IEC 61858-1:2014 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 wire-wound winding 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 the IEC 61857 series. This first edition of IEC 61858-1 cancels and replaces the third edition of IEC 61858, published in 2008. It constitutes a technical and editorial revision. This edition includes the following significant technical changes with respect to the previous edition: a) this part is specifically for wire-wound winding EIS; b) new figures and charts support the contents.

Elektrische Isoliersysteme - Thermische Bewertung von Veränderungen an einem erprobten elektrischen Isoliersystem (EIS) - Teil 1: EIS mit Runddraht-Wicklungen

Systèmes d'isolation électrique - Évaluation thermique des modifications apportées à un système d’isolation électrique (SIE) éprouvé - Partie 1: Système d’isolation électrique à enroulements à fils

L'IEC 61858-1:2014 énumère 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. La présente norme s'applique aux SIE utilisés dans les dispositifs électrotechniques à enroulements à fils. 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 une des procédures décrites dans la série IEC 61857. Cette première édition de l'IEC 61858-1 annule et remplace la troisième édition de l'IEC 61858, parue en 2008. La présente édition constitue une révision technique et éditoriale. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: a) cette partie est spécifiquement pour bobinée enroulement SIE; b) nouveaux chiffres et graphiques appuient le contenu.

Sistemi električne izolacije - Toplotno vrednotenje sprememb preverjenega sistema električne izolacije z EIS - 1. del: Žično navitje EIS (IEC 61858-1:2014)

Standard EN IEC 61858-1 navaja seznam zahtevanih preskusnih postopkov za kvalificiranje sprememb preverjenega sistema električne izolacije (EIS) z upoštevanjem njegove toplotne klasifikacije. Ta standard se uporablja za EIS, ki se uporablja v elektrotehničnih napravah z žičnim navitjem. 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, določenim v skupini standardov IEC 61857.

General Information

• Status: Published
• Publication Date: 15-May-2014
• Withdrawal Date: 18-Mar-2017
• 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
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 16-May-2014
• Completion Date: 16-May-2014
• Ref Project: SIST EN 61858-1:2014 - Electrical insulation systems - Thermal evaluation of modifications to an established EIS - Part 1: Wire-wound winding EIS

Relations

• Replaces: EN 60034-18-22:2001 - Rotating electrical machines - Part 18-22: Functional evaluation of insulation systems - Test procedures for wire-wound windings - Classification of changes and insulation component substitutions
• Effective Date: 27-Feb-2024
• Replaces: EN 61858:2008 - Electrical insulation systems - Thermal evaluation of modifications to an established wire-wound EIS
• Effective Date: 28-Jan-2023
• Corrected By: EN 61858-1:2014/AC:2024-05 - Electrical insulation systems - Thermal evaluation of modifications to an established electrical insulation system (EIS) - Part 1: Wire-wound winding EIS
• Effective Date: 27-Feb-2024

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2014
1DGRPHãþD
SIST EN 61858:2008
6LVWHPLHOHNWULþQHL]RODFLMH7RSORWQRYUHGQRWHQMHVSUHPHPESUHYHUMHQHJD
VLVWHPDHOHNWULþQHL]RODFLMH](,6GHOäLþQRQDYLWMH(,6,(&
Electrical insulation systems - Thermal evaluation of modifications to an established EIS
- Part 1: Wire-wound winding EIS
Ta slovenski standard je istoveten z: EN 61858-1:2014
ICS:
29.080.30 Izolacijski sistemi Insulation systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 61858-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2014
ICS 29.080.30 Supersedes EN 61858:2008
English Version
Electrical insulation systems - Thermal evaluation of
modifications to an established electrical insulation system (EIS)
- Part 1: Wire-wound winding EIS
(IEC 61858-1:2014)
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 1: Système d'isolation électrique à Isoliersystem (EIS) - Teil 1: EIS mit Runddraht-Wicklungen
enroulements à fils (IEC 61858-1:2014)
(CEI 61858-1:2014)
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 61858-1:2014 E
Foreword
The text of document 112/252/CDV, future edition 1 of IEC 61858-1, 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 61858-1:2014.

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
This document supersedes EN 61858:2008.

a) this part is specifically for wire-wound winding EIS;
b) new figures and charts support the contents.

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 61858-1:2014 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:

IEC 60034-18-21 NOTE Harmonized as EN 60034-18-21.
IEC 60317-15 NOTE Harmonized as EN 60317-15.

- 3 - EN 61858-1:2014
Annex ZA
(normative)
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 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu
Publication Year Title EN/HD Year

IEC 60085 2007 Electrical insulation - Thermal evaluation EN 60085 -
and designation
IEC 60172 - Test procedure for the determination EN 60172 -
of the temperature index of enamelled
winding wires
IEC 60216-5 - Electrical insulating materials - Thermal EN 60216-5 -
endurance properties -
Part 5: Determination of relative thermal
endurance index (RTE) of an insulating
material
IEC 60317-1 - Specifications for particular types of winding - -
wires -
Part 1: Polyvinyl acetal enamelled round
copper wire, class 105
IEC 60317-2 - Specifications for particular types EN 60317-2 -
of winding wires -
Part 2: Solderable polyurethane enamelled
round copper wire, class 130, with a bonding
layer
IEC 60317-3 - Specifications for particular types of winding - -
wires -
Part 3: Polyester enamelled round copper
wire, class 155
IEC 60317-4 - Specifications for particular types of winding EN 60317-4 -
wires -
Part 4: Solderable polyurethane enamelled
round copper wire, class 130
IEC 60317-8 - Specifications for particular types of winding EN 60317-8 -
wires - Part 8: Polyesterimide enamelled
round copper wire, class 180
IEC 60317-12 - Specifications for particular types of winding EN 60317-12 -
wires -
Part 12: Polyvinyl acetal enamelled round
copper wire, class 120
Publication Year Title EN/HD Year
IEC 60317-13 - Specifications for particular types of winding EN 60317-13 -
wires -
Part 13: Polyester or polyesterimide
overcoated with polyamide-imide enamelled
round copper wire, class 200
1)
IEC 60317-19 - Specifications for particular types of winding EN 60317-19 -
wires -
Part 19: Solderable polyurethane enamelled
round copper wire overcoated with
polyamide, class 130
IEC 60317-20 - Specifications for particular types of winding EN 60317-20 -
wires -
Part 20: Solderable polyurethane enamelled
round copper wire, class 155
IEC 60317-21 - Specifications for particular types of winding EN 60317-21 -
wires -
Part 21: Solderable polyurethane enamelled
round copper wire overcoated with
polyamide, class 155
IEC 60317-22 - Specifications for particular types of winding EN 60317-22 -
wires -
Part 22 : Polyester or polyesterimide
enamelled round copper wire overcoated
with polyamide, class 180
IEC 60317-23 - Specifications for particular types of winding EN 60317-23 -
wires -
Part 23: Solderable polyesterimide
enamelled round copper wire, class 180

IEC 60317-25 - Specifications for particular types of winding EN 60317-25 -
wires -
Part 25: Polyester or polyesterimide
overcoated with polyamide-imide enamelled
round aluminium wire, class 200

IEC 60317-26 - Specifications for particular types of winding EN 60317-26 -
wires -
Part 26: Polyamide-imide enamelled round
copper wire, class 200
1) 1)
IEC 60317-34 - Specifications for particular types of winding EN 60317-34 -
wires -
Part 34: Polyester enamelled round copper
wire, class 130 L
IEC 60317-35 - Specifications for particular types of winding EN 60317-35 -
wires -
Part 35: Solderable polyurethane enamelled
round copper wire, class 155, with a bonding
layer
IEC 60317-36 - Specifications for particular types of winding EN 60317-36 -
wires -
Part 36: Solderable polyesterimide
enamelled round copper wire, class 180,
with a bonding layer
1)
Withdrawn publication.
- 5 - EN 61858-1:2014
Publication Year Title EN/HD Year
IEC 60317-37 - Specifications for particular types of winding EN 60317-37 -
wires -
Part 37: Polyesterimide enamelled round
copper wire, class 180, with a bonding layer

IEC 60317-38 - Specifications for particular types EN 60317-38 -
of winding wires -
Part 38: Polyester or polyesterimide
overcoated with polyamide-imide enamelled
round copper wire, class 200, with a bonding
layer
IEC 60317-42 - Specifications for particular types EN 60317-42 -
of winding wires -
Part 42: Polyester-amide-imide enamelled
round copper wire, class 200
IEC 60317-43 - Specifications for particular types EN 60317-43 -
of winding wires -
Part 43: Aromatic polyimide tape wrapped
round copper wire, class 240
IEC 60317-46 - Specifications for particular types of winding EN 60317-46 -
wires -
Part 46: Aromatic polyimide enamelled round
copper wire, class 240
IEC 60317-48 - Specifications for particular types of winding EN 60317-48 -
wires -
Part 48: Glass-fibre wound resin or varnish
impregnated, bare or enamelled round
copper wire, temperature index 155

IEC 60317-50 - Specifications for particular types EN 60317-50 -
of winding wires -
Part 50: Glass-fibre wound silicone resin
or varnish impregnated, bare or enamelled
round copper wire, temperature index 200

IEC 60317-51 - Specifications for particular types EN 60317-51 -
of winding wires -
Part 51: Solderable polyurethane enamelled
round copper wire, class 180
IEC 60317-53 - Specifications for particular types EN 60317-53 -
of winding wires -
Part 53: Aromatic polyamide (aramid) tape
wrapped rectangular copper wire,
temperature index 220
1)
IEC 60317-54 - Specifications for particular types - -
of winding wires -
Part 54: Polyester enamelled round copper
wire, class 155L
IEC 60317-55 - Specifications for particular types EN 60317-55 -
of winding wires -
Part 55: Solderable polyurethane enamelled
round copper wire overcoated with
polyamide, Class 180
1)
Withdrawn publication.
Publication Year Title EN/HD Year
IEC 60317-57 - Specifications for particular types EN 60317-57 -
of winding wires -
Part 57: Polyamide-imide enamelled round
copper wire, class 220
IEC 60505 - Evaluation and qualification of electrical EN 60505 -
insulation systems
IEC 61033 - Test methods for the determination of bond EN 61033 -
strength of impregnating agents to an
enamelled wire substrate
IEC 61857 Series Electrical insulation systems - EN 61857 Series
Procedures for thermal evaluation

IEC 61857-1 2008 Electrical insulation systems - EN 61857-1 2009
Procedures for thermal evaluation -
Part 1: General requirements - Low-voltage

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

IEC 62317-2 - Ferrite cores - Dimensions - EN 62317-2 -
Part 2: Pot-cores for use in
telecommunications, power supply, and filter
applications
IEC 61858-1 ®
Edition 1.0 2014-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electrical insulation systems – Thermal evaluation of modifications to an

established electrical insulation system (EIS) –

Part 1: Wire-wound winding EIS

Systèmes d'isolation électrique – Évaluation thermique des modifications

apportées à un système d’isolation électrique (SIE) éprouvé –

Partie 1: Système d’isolation électrique à enroulements à fils

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX V
ICS 29.080.30 ISBN 978-2-8322-1410-7

– 2 – 61858-1 © IEC:2014
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 9
4 General considerations . 11
5 Substitution of phase or ground insulation . 13
5.1 Generically identical . 13
5.2 Substitution or addition of selected components and additives . 13
6 Substitution of winding wire . 14
6.1 Non bondable winding wire .
...