Evaluation and qualification of electrical insulation systems

IEC 60505:2011 establishes the basis for estimating the ageing of electrical insulation systems (EIS) under conditions of either electrical, thermal, mechanical, environmental stresses or combinations of these (multifactor stresses). It specifies the principles and procedures that shall be followed, during the development of EIS functional test and evaluation procedures, to establish the estimated service life for a specific EIS. This standard should be used by all IEC technical committees responsible for equipment having an EIS. The main change with respect to the previous edition is that Annex A: Glossary is now available in an Internet version as well as a hardcopy version. The internet version contains an abridged text version and a multimedia supplement.

Bewertung und Kennzeichnung von elektrischen Isoliersystemen

Evaluation et qualification des systèmes d'isolation électrique

La CEI 60505:2011 établit les bases de l'estimation du vieillissement des systèmes d'isolation électrique (SIE) dans des conditions de contraintes électriques, thermiques, mécaniques, environnementales ou de combinaisons de ces contraintes (contraintes multifactorielles). Elle spécifie les principes et les procédures qui doivent être suivis, au cours du développement d'essais fonctionnels ou de procédures d'évaluation des SIE, pour établir la durée de vie estimée d'un SIE spécifique. Il convient que tous les comités d'études de la CEI responsables de matériels ayant un SIE utilisent la présente norme. La principale modification par rapport à l'édition précédente est que l'Annexe A: Glossaire, est désormais disponible en version internet ainsi qu'en version imprimée. Cette version internet consiste en une version textuelle abrégée et un complément multimédia.

Vrednotenje in kvalificiranje električnih izolacijskih sistemov

Ta mednarodni standard vzpostavlja osnovo za ocenjevanje staranja električnih izolacijskih sistemov (EIA) pod pogoji električnega, toplotnega, mehanskega ali okoljskega stresa ali kombinacije navedenih (večfaktorski stresi) dejavnikov. Določa načela in postopke, ki se morajo upoštevati med razvojem postopkov funkcijskega preskušanja in vrednotenja EIS, da se oceni življenjska doba določenega EIS. Ta standard morajo uporabljati vsi tehnični odbori IEC, odgovorni za opremo, ki vsebuje EIS.

General Information

Status
Published
Publication Date
25-Aug-2011
Withdrawal Date
14-Aug-2014
Current Stage
6060 - Document made available - Publishing
Start Date
26-Aug-2011
Completion Date
26-Aug-2011

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SLOVENSKI STANDARD
01-oktober-2011
9UHGQRWHQMHLQNYDOLILFLUDQMHHOHNWULþQLKL]RODFLMVNLKVLVWHPRY
Evaluation and qualification of electrical insulation systems
Bewertung und Kennzeichnung von elektrischen Isoliersystemen
Evaluation et qualification des systèmes d'isolation électrique
Ta slovenski standard je istoveten z: EN 60505:2011
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 60505
NORME EUROPÉENNE
August 2011
EUROPÄISCHE NORM
ICS 29.080.30 Supersedes EN 60505:2004

English version
Evaluation and qualification of electrical insulation systems
(IEC 60505:2011)
Evaluation et qualification des systèmes Bewertung und Kennzeichnung von
d'isolation électrique elektrischen Isoliersystemen
(CEI 60505:2011) (IEC 60505:2011)

This European Standard was approved by CENELEC on 2011-08-15. 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, Croatia, 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.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Management Centre: Avenue Marnix 17, B - 1000 Brussels

© 2011 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60505:2011 E
Foreword
The text of document 112/174/FDIS, future edition 4 of IEC 60505, 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 60505:2011.
The following dates are fixed:
(dop) 2012-05-15
• 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) 2014-08-15
standards conflicting with the
document have to be withdrawn
This document supersedes EN 60505:2004.

The main change with respect to EN 60505:2004 is that Annex A: Glossary is now available in an Internet
version (http://std.iec.ch/iec60505) as well as a hardcopy version. The internet version contains an
abridged text version and a multimedia supplement.

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 60505:2011 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 60068-1 NOTE  Harmonized as EN 60068-1.
IEC 60068-2 series NOTE  Harmonized in EN 60068-2 series.
IEC 60068-2-1 NOTE  Harmonized as EN 60068-2-1.
IEC 60068-2-2 NOTE  Harmonized as EN 60068-2-2.
IEC 60068-2-10 NOTE  Harmonized as EN 60068-2-10.
IEC 60068-2-14 NOTE  Harmonized as EN 60068-2-14.
IEC 60068-2-27 NOTE  Harmonized as EN 60068-2-27.
IEC 60112 NOTE  Harmonized as EN 60112.
IEC 60212 NOTE  Harmonized as EN 60212.
IEC 60216 series NOTE  Harmonized in EN 60216 series.
IEC 60216-1 NOTE  Harmonized as EN 60216-1.
IEC 60243-1 NOTE  Harmonized as EN 60243-1.
IEC 60243-2 NOTE  Harmonized as EN 60243-2.
IEC 60243-3 NOTE  Harmonized as EN 60243-3.
IEC 60664-4 NOTE  Harmonized as EN 60664-4.
IEC 60270:2000 NOTE  Harmonized as EN 60270:2001 (not modified).

- 3 - EN 60505:2011
IEC 60371-2 NOTE  Harmonized as EN 60371-2.
IEC 60587 NOTE  Harmonized as EN 60587.
IEC 60721 series NOTE  Harmonized in EN 60721 series.
IEC 60811-3-1 NOTE  Harmonized as EN 60811-3-1.
IEC 61033 NOTE  Harmonized as EN 61033.
IEC 61710 NOTE  Harmonized as EN 61710.
IEC 62231 NOTE  Harmonized as EN 62231.
IEC 62271-304 NOTE  Harmonized as CLC/TS 62271-304.
ISO 62 NOTE  Harmonized as EN ISO 62.
ISO 175 NOTE  Harmonized as EN ISO 175.
ISO 877-1 NOTE  Harmonized as EN ISO 877-1.
ISO 877-2 NOTE  Harmonized as EN ISO 877-2.
ISO 4611 NOTE  Harmonized as EN ISO 4611.

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  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year

IEC 60216-2 - Electrical insulating materials - Thermal EN 60216-2 -
endurance properties -
Part 2: Determination of thermal endurance
properties of electrical insulating materials -
Choice of test criteria
IEC 60216-3 - Electrical insulating materials - Thermal EN 60216-3 -
endurance properties -
Part 3: Instructions for calculating thermal
endurance characteristics
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 60493-1 - Guide for the statistical analysis of ageing test - -
data -
Part 1: Methods based on mean values of
normally distributed test results

IEC 60544-1 - Electrical insulating materials - Determination EN 60544-1 -
of the effects of ionizing radiation -
Part 1: Radiation interaction and dosimetry

IEC/TS 61251 - Electrical insulating materials - A.C. voltage - -
endurance evaluation - Introduction

IEC 62539 - Guide for the statistical analysis of electrical - -
insulation breakdown data
IEC 60505 ®
Edition 4.0 2011-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Evaluation and qualification of electrical insulation systems

Évaluation et qualification des systèmes d'isolation électrique

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX XC
ICS 29.080.30 ISBN 978-2-88912-539-5

– 2 – 60505 © IEC:2011
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 9
2 Normative references . 9
3 Terms and definitions . 9
3.1 General terms . 10
3.2 Terms related to service stresses and ageing . 10
3.3 Terms related to testing . 11
4 Ageing . 12
4.1 Ageing mechanism . 12
4.2 Assessment of ageing mechanisms . 14
4.3 Electrical ageing . 15
4.4 Thermal ageing . 17
4.5 Mechanical ageing . 19
4.6 Environmental ageing . 21
4.7 Accelerated ageing . 22
4.8 Multifactor ageing . 23
5 Basic evaluation considerations . 23
5.1 Elements for preparing an evaluation method . 23
5.1.1 Object . 23
5.1.2 Service conditions . 23
5.1.3 Life values . 24
5.2 Types of evaluation procedures . 24
5.3 Choice of the test object . 26
5.4 Experimental test procedures . 26
5.5 Conclusions for standardization practices . 27
6 Functional ageing tests. 27
6.1 Test objects. 27
6.1.1 Construction of test objects . 27
6.1.2 Number of test objects . 28
6.1.3 Quality assurance tests . 28
6.1.4 Preconditioning subcycle . 28
6.1.5 Initial diagnostic tests . 28
6.1.6 Reference EIS . 28
6.2 Test conditions . 28
6.2.1 Continuous and cyclic testing . 28
6.2.2 Levels of test stresses, ageing factors and diagnostic factors . 29
6.3 Determination of EIS service life . 29
6.3.1 Extrapolation of life test results . 29
6.3.2 Comparison of life test data . 29
6.4 Diagnostics . 30
6.4.1 Diagnostic tests – End point criteria. 30
6.4.2 Additional specific tests . 31
6.5 Analysing the data . 31
6.6 Test report . 31
Annex A (informative) Glossary . 32

60505 © IEC:2011 – 3 –
Bibliography . 71

Figure 1 – Ageing of an EIS . 13
Figure 2 – Intrinsic/extrinsic electrical ageing of practical EIS . 15
Figure 3 – Intrinsic/extrinsic thermal ageing of practical EIS . 17
Figure 4 – Intrinsic/extrinsic mechanical ageing of practical EIS . 20
Figure 5 – Intrinsic/extrinsic environmental ageing of practical EIS . 22
Figure 6 – Elements of evaluation methods . 23
Figure 7 – Type of evaluation procedure . 25
Figure 8 – Selection of test object . 26
Figure 9 – Establishing the test method . 27
Figure A.1 – Surface abrasion damage .
...

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