SIST EN 60034-18-42:2018

Rotating electrical machines - Part 18-42: Partial discharge resistant electrical insulation systems (Type II) used in rotating electrical machines fed from voltage converters - Qualification tests (IEC 60034-18-42:2017)

IEC/TS 60034-18-42:2008 defines criteria for assessing the insulation system of stator/rotor windings of single or polyphase AC machines which are subjected to repetitive impulse voltages, such as pulse width modulation converters, and expected to withstand partial discharge activity during service. It specifies electrical qualification and acceptance tests on representative samples which verify fitness for operation with voltage-source converters.

Drehende elektrische Maschinen - Teil 18-42: Teilentladungsresistente Isoliersysteme (Typ II) von drehenden elektrischen Maschinen, die von Spannungsumrichtern gespeist werden - Qualifizierungsprüfungen (IEC 60034-18-42:2017)

Machines électriques tournantes - Partie 18-42: Systèmes d'isolation électrique résistants aux décharges partielles (Type II) utilisés dans des machines électriques tournantes alimentées par convertisseurs de tension - Essais de qualification (IEC 60034-18-42:2017)

La CEI/TS 60034-18-42:2008 définit les critères d'évaluation du système d'isolation des enroulements statorique et rotorique des machines à courant alternatif monophasées ou polyphasées qui sont soumises à des tensions de choc répétitives, comme par exemple les convertisseurs à modulation de largeur d'impulsion, et susceptibles d'endurer des décharges partielles pendant leur fonctionnement. Elle spécifie des essais de qualification électrique et d'acceptation réalisés sur des échantillons représentatifs, en vue de vérifier leur adéquation à un fonctionnement avec des convertisseurs de source de tension.

Električni rotacijski stroji - 18-42. del: Električni izolacijski sistemi, odporni proti delni razelektritvi (tip II), ki se uporabljajo v električnih rotacijskih strojih, napajanih prek napetostnih pretvornikov - Preskusi zahtevanih pogojev (IEC 60034-18-42:2017)

Standard IEC/TS 60034-18-42:2008 določa merila za ocenjevanje izolacijskega sistema navitja statorja/rotorja enofaznih ali večfaznih strojev na izmenični tok, ki so izpostavljeni ponavljajočim se impulznim napetostim, kot so pretvorniki s pulzno-širinsko modulacijo, in ki med obratovanjem predvidoma prenesejo delno izpraznitev. Določa električno kvalifikacijo in preskuse sprejemljivosti pri reprezentativnih vzorcih, s čimer se preveri primernost stroja za delovanje z napetostnimi pretvorniki.

General Information

• Status: Published
• Publication Date: 12-Dec-2017
• ICS: 29.080.30 - Insulation systems
• ICS: 29.160.01 - Rotating machinery in general
• Technical Committee: ERS - Rotating machinery
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 03-Jul-2017
• Due Date: 07-Sep-2017
• Completion Date: 13-Dec-2017
• Ref Project: EN 60034-18-42:2017 - Rotating electrical machines - Part 18-42: Partial discharge resistant electrical insulation systems (Type II) used in rotating electrical machines fed from voltage converters - Qualification tests

Relations

• Replaces: SIST-TS CLC/TS 60034-18-42:2011 - Rotating electrical machines - Part 18-42: Qualification and acceptance tests for partial discharge resistant electrical insulation systems (Type II) used in rotating electrical machines fed from voltage converters (IEC/TS 60034-18-42:2008)
• Effective Date: 29-Jan-2023
• Replaces: SIST-TS CLC/TS 60034-18-42:2011 - Rotating electrical machines - Part 18-42: Qualification and acceptance tests for partial discharge resistant electrical insulation systems (Type II) used in rotating electrical machines fed from voltage converters (IEC/TS 60034-18-42:2008)
• Effective Date: 22-Jan-2013
• Amended By: SIST EN 60034-18-42:2018/A1:2021 - Rotating electrical machines - Part 18-42: Partial discharge resistant electrical insulation systems (Type II) used in rotating electrical machines fed from voltage converters - Qualification tests (IEC 60034-18-42:2017/A1:2020)
• Effective Date: 13-Nov-2018
• Replaces: SIST-TS CLC/TS 60034-18-42:2011 - Rotating electrical machines - Part 18-42: Qualification and acceptance tests for partial discharge resistant electrical insulation systems (Type II) used in rotating electrical machines fed from voltage converters (IEC/TS 60034-18-42:2008)
• Effective Date: 07-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 60034-18-42:2018
01-januar-2018
1DGRPHãþD
SIST-TS CLC/TS 60034-18-42:2011
(OHNWULþQLURWDFLMVNLVWURMLGHO(OHNWULþQLL]RODFLMVNLVLVWHPLRGSRUQLSURWL
GHOQLUD]HOHNWULWYLWLS,,NLVHXSRUDEOMDMRYHOHNWULþQLKURWDFLMVNLKVWURMLK
QDSDMDQLKSUHNQDSHWRVWQLKSUHWYRUQLNRY3UHVNXVL]DKWHYDQLKSRJRMHY,(&

Rotating electrical machines - Part 18-42: Partial discharge resistant electrical insulation
systems (Type II) used in rotating electrical machines fed from voltage converters -
Qualification tests (IEC 60034-18-42:2017)
Drehende elektrische Maschinen - Teil 18-42: Teilentladungsresistente Isoliersysteme
(Typ II) von drehenden elektrischen Maschinen, die von Spannungsumrichtern gespeist
werden - Qualifizierungsprüfungen (IEC 60034-18-42:2017)
Machines électriques tournantes - Partie 18-42: Systèmes d'isolation électrique
résistants aux décharges partielles (Type II) utilisés dans des machines électriques
tournantes alimentées par convertisseurs de tension - Essais de qualification (IEC 60034
-18-42:2017)
Ta slovenski standard je istoveten z: EN 60034-18-42:2017
ICS:
29.080.30 Izolacijski sistemi Insulation systems
29.160.01 Rotacijski stroji na splošno Rotating machinery in
general
SIST EN 60034-18-42:2018 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 60034-18-42:2018

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SIST EN 60034-18-42:2018


EUROPEAN STANDARD EN 60034-18-42

NORME EUROPÉENNE

EUROPÄISCHE NORM
June 2017
ICS 29.160.01 Supersedes CLC/TS 60034-18-42:2011
English Version
Rotating electrical machines -
Part 18-42: Partial discharge resistant electrical insulation
systems (Type II) used in rotating electrical machines fed from
voltage converters - Qualification tests
(IEC 60034-18-42:2017)
Machines électriques tournantes - Partie 18-42: Systèmes Drehende elektrische Maschinen - Teil 18-42:
d'isolation électrique résistants aux décharges partielles Teilentladungsresistente Isoliersysteme (Typ II) von
(Type II) utilisés dans des machines électriques tournantes drehenden elektrischen Maschinen, die von
alimentées par convertisseurs de tension - Essais de Spannungsumrichtern gespeist werden -
qualification Qualifizierungsprüfungen
(IEC 60034-18-42:2017) (IEC 60034-18-42:2017)
This European Standard was approved by CENELEC on 2017-03-14. 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, Serbia, 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
© 2017 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
 Ref. No. EN 60034-18-42:2017 E

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SIST EN 60034-18-42:2018
EN 60034-18-42:2017
European foreword
The text of document 2/1854/FDIS, future edition 1 of IEC 60034-18-42, prepared by IEC/TC 2
"Rotating machinery" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC
as EN 60034-18-42:2017.
The following dates are fixed:
• latest date by which the document has to be implemented at (dop) 2017-12-14
national level by publication of an identical national
standard or by endorsement
• latest date by which the national standards conflicting with (dow) 2020-03-14
the document have to be withdrawn

This document supersedes CLC/TS 60034-18-42:2011.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Endorsement notice
The text of the International Standard IEC 60034-18-42:2017 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 60034-15:2009 NOTE Harmonized as EN 60034-15:2009 (not modified).
2

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SIST EN 60034-18-42:2018
EN 60034-18-42:2017
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 60034-1 (mod) 2010 Rotating electrical machines - EN 60034-1 2010
Part 1: Rating and performance
- -  + corr. Oct. 2010
IEC 60034-18-1 2010 Rotating electrical machines - EN 60034-18-1 2010
Part 18-1: Functional evaluation of insulation
systems - General guidelines
IEC 60034-18-31 -  Rotating electrical machines - EN 60034-18-31 -
Part 18-31: Functional evaluation of
insulation systems - Test procedures for
form-wound windings - Thermal evaluation
and classification of insulation systems used
in rotating machines
IEC 60034-18-32 -  Rotating electrical machines - EN 60034-18-32 -
Part 18-32: Functional evaluation of
insulation systems - Test procedures for
form-wound windings - Evaluation of
electrical endurance
IEC 60034-18-41 2014 Rotating electrical machines - EN 60034-18-41 2014
Part 18-41: Partial discharge free electrical
insulation systems (Type I) used in rotating
electrical machines fed from voltage
converters - Qualification and quality control
tests
IEC/TS 60034-27 -  Rotating electrical machines - CLC/TS 60034-27 -
Part 27: Off-line partial discharge
measurements on the stator winding
insulation of rotating electrical machines
IEC/TS 61934 -  Electrical insulating materials and systems - - -
Electrical measurement of partial discharges
(PD) under short rise time and repetitive
voltage impulses
IEC 62539 -  Guide for the statistical analysis of electrical - -
insulation breakdown data

3

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SIST EN 60034-18-42:2018

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SIST EN 60034-18-42:2018




IEC 60034-18-42

®


Edition 1.0 2017-02




INTERNATIONAL



STANDARD




NORME



INTERNATIONALE
colour

inside










Rotating electrical machines –

Part 18-42: Partial discharge resistant electrical insulation systems (Type II)

used in rotating electrical machines fed from voltage converters – Qualification


tests



Machines électriques tournantes –


Partie 18-42: Systèmes d’isolation électrique résistants aux décharges partielles

(Type II) utilisés dans des machines électriques tournantes alimentées par

convertisseurs de tension – Essais de qualification










INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE


INTERNATIONALE




ICS 29.160.01 ISBN 978-2-8322-3822-6



Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

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SIST EN 60034-18-42:2018
– 2 – IEC 60034-18-42:2017 © IEC 2017
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 9
4 Machine terminal voltages arising from converter operation . 12
5 Electrical stresses in the insulation system of machine windings . 15
5.1 General . 15
5.2 Voltages stressing the phase to phase insulation . 16
5.3 Voltages stressing the phase to ground insulation . 16
5.4 Voltages stressing the turn to turn insulation . 16
5.4.1 General . 16
5.4.2 Random-wound windings . 16
5.4.3 Form-wound windings . 17
6 Voltage rating for Type II insulation systems . 17
7 Stress factors for converter-fed Type II insulation systems . 18
8 Qualification tests . 19
8.1 General . 19
8.2 Qualification tests . 19
9 Qualification of mainwall insulation system . 20
9.1 General . 20
9.2 Test methods . 20
9.3 Use of 50 Hz or 60 Hz life data to predict the service life with a converter
drive . 22
10 Qualification of turn insulation . 23
10.1 General . 23
10.2 Test methods . 24
11 Qualification of the stress control system . 25
11.1 General . 25
11.2 Test methods . 26
12 Preparation of test objects . 27
12.1 General . 27
12.2 Mainwall specimens . 27
12.3 Turn to turn specimens . 27
12.4 Stress control specimens . 27
13 Qualification test procedures . 27
13.1 General . 27
13.2 Mainwall insulation . 27
13.3 Turn to turn insulation . 28
13.4 Stress control system . 28
14 Qualification test pass criteria . 29
14.1 Mainwall insulation . 29
14.2 Turn to turn insulation . 29
14.3 Stress control system . 29
15 Routine test . 29

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SIST EN 60034-18-42:2018
IEC 60034-18-42:2017 © IEC 2017 – 3 –
16 Optional screening tests . 30
17 Analysis, reporting and classification . 30
Annex A (informative) Contributions to ageing of the mainwall insulation . 31
A.1 Life time consumption of the mainwall insulation . 31
A.2 Calculation of the contributions to ageing from a 3-level converter drive . 31
A.3 Calculation to derive an equivalent voltage amplitude and frequency . 32
Annex B (informative) Examples of circuits for impulse testing . 34
B.1 Impulse test circuit using a semiconducting switch . 34
B.2 Typical waveform generated from the impulse generator . 34
B.3 Alternative impulse test circuit using a semiconducting switch . 35
Annex C (informative) Derivation of the short term endurance test voltage . 37
Annex D (informative) Derivation of the impulse voltage insulation class for the
machine insulation . 38
Annex E (normative) Derivation of an IVIC in the absence of a manufacturer’s
reference life line . 40
E.1 Derivation of an IVIC from endurance tests . 40
E.1.1 Mainwall insulation . 40
E.1.2 Turn insulation . 41
E.1.3 Stress control system . 41
E.2 Derivation of the IVIC X on the basis of satisfactory service experience . 41
E.3 Derivation of an IVIC S on the basis of satisfactory service experience . 41
Annex F (informative) Optional screening tests . 42
F.1 General . 42
F.2 Short term endurance test on the mainwall insulation . 42
F.3 Voltage withstand test . 42
Bibliography . 43

Figure 1 – Voltage impulse waveshape parameters . 12
Figure 2 – Waveform representing one complete cycle of the phase to phase voltage
at the terminals of a machine fed from a 3-level converter . 13
Figure 3 – Jump voltage (U ) at the terminals of a machine fed from a converter drive . 14
j
Figure 4 – Maximum voltage enhancement at the machine terminals at infinite
impedance as a function of cable length for various impulse rise times . 15
Figure 5 – Example of a random-wound design . 16
Figure 6 – Example of a form-wound design . 16
Figure 7 – Worst case voltage stressing the turn to turn insulation in a variety of
random-wound stators as a function of the rise time of the impulse . 17
Figure 8 – Example of a life curve for a Type II mainwall insulation system . 23
Figure 9 – Example of a life curve for turn insulation . 25
Figure A.1 – Representation of the phase to ground voltage at the terminals of a
machine fed from a 3-level converter . 31
Figure A.2 – Ratio of the life time consumption (y-axis) of impulse voltage (U ) to
pk/pk
fundamental voltage (U’ ) expressed as a percentage for various
pk/pk
impulse/fundamental frequency ratios (n=10) . 33
Figure B.1 – Example of a simple converter voltage simulation circuit . 34
Figure B.2 – Typical waveform generated from the impulse generator . 35
Figure B.3 – Example of a simple converter voltage simulation circuit . 36

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SIST EN 60034-18-42:2018
– 4 – IEC 60034-18-42:2017 © IEC 2017
Figure B.4 – Typical waveform generated from the impulse generator . 36
Figure E.1 – Reference life line for mainwall insulation . 40

Table 1 – Examples of the values of characteristics of the terminal voltages for two
converter-fed machines. 13
Table 2 – Influence of features of the converter drive voltage on acceleration of
ageing of components of Type II insulation systems . 18
Table A.1 – Contribution to electrical ageing by 1 kHz impulses from a 3-level
converter as a percentage of the ageing from the 50 Hz fundamental voltage
(endurance coefficient of 10). 32
Table D.1 – Phase to ground test voltages according to IVIC for Type II insulation
systems . 38
Table D.2 – Impulse voltage insulation classes (IVIC) . 39

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SIST EN 60034-18-42:2018
IEC 60034-18-42:2017 © IEC 2017 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

ROTATING ELECTRICAL MACHINES –

Part 18-42: Partial discharge resistant electrical insulation systems
(Type II) used in rotating electrical machines fed from voltage
converters – Qualification tests

FOREWORD
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
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
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
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
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 60034-18-42 has been prepared by IEC Technical Committee 2:
Rotating machinery.
IEC 60034-18-42 cancels and replaces IEC TS 60034-18-42 (2008).
The text of this standard is based on the following documents:
FDIS Report on voting
2/1854/FDIS 2/1856/RVD

Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.

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SIST EN 60034-18-42:2018
– 6 – IEC 60034-18-42:2017 © IEC 2017
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
NOTE A table of cross-references of all TC 2 publications can be found on the IEC TC 2 dashboard on the IEC
website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.

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SIST EN 60034-18-42:2018
IEC 60034-18-42:2017 © IEC 2017 – 7 –
INTRODUCTION
The approval of electrical insulation systems for use in rotating electrical machines fed from
voltage converters is set out in two International Standards. These standards separate the
systems into those which are not expected to experience partial discharge activity within
specified conditions in their service lives (Type I) and those which are expected to experience
and withstand partial discharge activity in any part of the insulation system throughout their
service lives (Type II). For both Type I and Type II insulation systems, the power drive system
integrator (the person responsible for co-ordinating the electrical performance of the entire
power drive system) shall inform the machine manufacturer what voltage will appear at the
machine terminals in service. The machine manufacturer will then decide upon the severity of
the tests appropriate for qualifying the insulation system. For insulation systems which have
been qualified through IEC 60034-18-41 or IEC 60034-18-42 for use in converter-fed
applications, an impulse voltage insulation class may be derived. This indicates the ability of
the insulation to withstand the electric stresses resulting from converter operation. For Type I
systems, the severity is based on the impulse rise time and the peak to peak voltage. For
Type II systems, the severity is additionally affected by the impulse voltage repetition rate and
the fundamental voltage characteristics. After installation of the converter/machine system, it
is recommended that the system integrator measures the phase to phase and phase to
ground voltages between the terminals and ground to check for compliance.
IEC 60034-18-41
Type I insulation systems are dealt with in IEC 60034-18-41. These systems are generally
used in rotating machines with rated voltage less than 700 V r.m.s. and tend to have random-
wound coils. In IEC 60034-18-41, the necessary normative references and definitions are
given together with a review of the effects arising from converter operation. Having
established the technical basis for the evaluation procedure, the conceptual approach and
test programmes are then described.
IEC 60034-18-42
In IEC 60034-18-42, tests are described for qualification of Type II insulation systems. These
insulation systems are generally used in rotating machines which have form-wound windings,
mostly rated above 700 V r.m.s. The qualification procedure is completely different from that
used for Type I insulation systems and involves destructive ageing of test objects under
accelerated conditions. The manufacturer requires a life curve (as described in IEC 60034-18-
32) for the insulation system that can be interpreted by use of appropriate calculations and/or
experimental procedures to provide an estimate of life under the service conditions with
converter drive. Great importance is attached to the qualification of any stress control system
that is used and testing here should be performed under sinusoidal and repetitive impulse
conditions applied separately. If the insulation system can be shown to provide an acceptable
life under the specified ageing conditions, it is qualified for use.

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SIST EN 60034-18-42:2018
– 8 – IEC 60034-18-42:2017 © IEC 2017
ROTATING ELECTRICAL MACHINES –

Part 18-42: Partial discharge resistant electrical insulation systems
(Type II) used in rotating electrical machines fed from voltage
converters – Qualification tests



1 Scope
This part of IEC 60034 defines criteria for assessing the insulation system of stator/rotor
windings of single or polyphase AC machines which are subjected to repetitive impulse
voltages, suc
...