Electrical insulation - Thermal evaluation and designation

IEC 60085:2007 now distinguishes between thermal classes for electrical insulation systems and electrical insulating materials. It establishes the criteria for evaluating the thermal endurance of either electrical insulating materials (EIM) or electrical insulation systems (EIS). It also establishes the procedure for assigning thermal classes. This standard is applicable where the thermal factor is the dominant ageing factor. The major technical changes with regard to the previous edition concern the fact that this edition is an amalgamation of the third edition of this standard together with IEC 62114:2001. It has the status of a horizontal standard in accordance with IEC Guide 108.

Elektrische Isolierung - Thermische Bewertung und Bezeichnung

Isolation électrique - Evaluation et désignation thermiques

La CEI 60085:2007 fait à présent la distinction entre les classes thermiques pour systèmes d'isolation électrique et matériaux isolants électriques. Elle établit les critères d'évaluation de l'endurance thermique des matériaux isolants électriques (EIM, electrical insulating materials) ou des systèmes d'isolation électrique (EIS, electrical insulation systems). Elle établit également la procédure d'attribution des classes thermiques. Cette norme s'applique lorsque le facteur thermique est le facteur de vieillissement prépondérant. Les modifications techniques majeures par rapport à l'édition précédente concernent le fait que la présente édition est une fusion entre la troisième édition de cette norme et la CEI 62114:2001. Elle a le statut d'une norme horizontale conformément au Guide 108 de la CEI.

Ocenjevanje toplotnih lastnosti in označevanje električne izolacije (IEC 60085:2007)

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SIST EN 60085:2008
SIST EN 60085:2005
SIST EN 62114:2002

Electrical insulation - Thermal evaluation and designation
Elektrische Isolierung - Thermische Bewertung und Bezeichnung
Isolation électrique - Evaluation et désignation thermiques
Ta slovenski standard je istoveten z: EN 60085:2008
29.080.30 Izolacijski sistemi Insulation systems
SIST EN 60085:2008 en,fr

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 60085:2008
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SIST EN 60085:2008
EN 60085
January 2008
ICS 29.035.01; 17.220.99 Supersedes EN 60085:2004 and EN 62114:2001
English version
Electrical insulation -
Thermal evaluation and designation
(IEC 60085:2007)
Isolation électrique - Elektrische Isolierung -
Evaluation et désignation thermiques Thermische Bewertung und Bezeichnung
(CEI 60085:2007) (IEC 60085:2007)

This European Standard was approved by CENELEC on 2007-12-01. 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, Bulgaria, Cyprus, the

Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,

Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,

Sweden, Switzerland and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2008 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 60085:2008 E
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SIST EN 60085:2008
EN 60085:2008 - 2 -

The text of document 112/74/FDIS, future edition 4 of IEC 60085, prepared by IEC TC 112, Evaluation

and qualification of electrical insulating materials and systems, was submitted to the IEC-CENELEC

parallel vote and was approved by CENELEC as EN 60085 on 2007-12-01.
This European Standard supersedes EN 60085:2004 and EN 62114:2001.

The major technical changes with regard to EN 60085:2004 concern the fact that EN 60085:2008 is an

amalgamation of EN 60085:2004 together with EN 62114:2001.
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) 2008-09-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2010-12-01
Annex ZA has been added by CENELEC.
Endorsement notice

The text of the International Standard IEC 60085:2007 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 60216-6 NOTE Harmonized as EN 60216-6:2006 (not modified).
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SIST EN 60085:2008
- 3 - EN 60085:2008
Annex ZA
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 When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD

Publication Year Title EN/HD Year
1) 2)
IEC 60216-1 - Electrical insulating materials - Properties of EN 60216-1 2001
thermal endurance -
Part 1: Ageing procedures and evaluation of
test results
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
1) 2)
IEC 60505 - Evaluation and qualification of electrical EN 60505 2004
insulation systems
IEC 61857 Series Electrical insulation systems - Procedures for EN 61857 Series
thermal evaluation
1) 2)
IEC 61858 - Electrical insulation systems - Thermal EN 61858 2005
evaluation of modifications to an established
wire-wound EIS
Undated reference.
Valid edition at date of issue.
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SIST EN 60085:2008
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SIST EN 60085:2008
IEC 60085
Edition 4.0 2007-11
Electrical insulation – Thermal evaluation and designation
Isolation électrique – Evaluation et désignation thermiques
ICS 29.035.01; 17.220.99 ISBN 2-8318-9387-9
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SIST EN 60085:2008
– 2 – 60085 © IEC:2007

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

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governmental organizations liaising with the IEC also participate in this preparation. 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 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 IEC National Committees.

3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

misinterpretation by any end user.

4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

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between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in

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5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any

equipment declared to be in conformity with an IEC Publication.

6) All users should ensure that they have the latest edition of this publication.

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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 60085 has been prepared by technical committee 112: Evaluation

and qualification of electrical insulating materials and systems.

This fourth edition cancels and replaces the third edition, published in 2004, and constitutes a

technical revision.

The major technical changes with regard to the previous edition concern the fact that this

edition is an amalgamation of the third edition of this standard together with IEC 62114:2001.

The text of this standard is based on the following documents:
FDIS Report on voting
112/74/FDIS 112/77/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 ac

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