BRITISH STANDARD BS EN 60034 18 22 2001 IEC 60034 18 22 2000 Rotating electrical machines — Part 18 22 Functional evaluation of insulation systems — Test procedures for wire wound windings — Classific[.]
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2000
Rotating electrical machines —
Part 18-22: Functional evaluation of insulation systems — Test procedures for wire-wound windings —
Classification of changes and insulation component substitutions
The European Standard EN 60034-18-22:2001 has the status of a British Standard
ICS 29.080.30; 29.160.01
NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW
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This British Standard, having
been prepared under the
direction of the
Electrotechnical Sector
Committee, was published
under the authority of the
Standards Committee and
comes into effect on
15 June 2001
© BSI 06-2001
ISBN 0 580 37661 3
National foreword
This British Standard is the official English language version of
EN 60034-18-22:2001 It is identical with IEC 60034-18-22:2000
The UK participation in its preparation was entrusted to Technical Committee PEL/ 2, Rotating electrical machinery, which has the responsibility to:
A list of organizations represented on this committee can be obtained on request to its secretary
From 1 January 1997, all IEC publications have the number 60000 added to the old number For instance, IEC 27-1 has been renumbered as IEC 60027-1 For a period of time during the change over from one numbering system to the other, publications may contain identifiers from both systems
Cross-references
The British Standards which implement these international or European publications may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the
“Find” facility of the BSI Standards Electronic Catalogue
A British Standard does not purport to include all the necessary provisions of
a contract Users of British Standards are responsible for their correct application
Compliance with a British Standard does not of itself confer immunity from legal obligations.
— aid enquirers to understand the text;
— present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the
UK interests informed;
— monitor related international and European developments and promulgate them in the UK
Summary of pages
This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 14, an inside back cover and a back cover
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Amendments issued since publication
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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
© 2001 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref No EN 60034-18-22:2001 E
ICS 29.080.01;29.160.01
English version
Rotating electrical machines Part 1822: Functional evaluation of insulation systems
Test procedures for wirewound windings -Classification of changes and insulation component substitutions
(IEC 60034-18-22:2000)
Machines électriques tournantes
Partie 18-22: Evaluation fonctionnelle
des systèmes d'isolation
-Procédures d'essai pour enroulement
à fils
-Classification des modifications et des
substitutions de composants d'isolations
(CEI 60034-18-22:2000)
Drehende elektrische Maschinen Teil 18-22: Funktionelle Bewertung von Isoliersystemen
Prüfverfahren für Runddrahtwicklungen -Klassifizierung von Änderungen und Substitutionen von Systemkomponenten (IEC 60034-18-22:2000)
This European Standard was approved by CENELEC on 2000-11-01 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, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom
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Foreword
The text of document 2/1088/FDIS, future edition 2 of IEC 60034-18-22, prepared by IEC TC 2, Rotating machinery, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60034-18-22 on 2000-11-01
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) 2001-08-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2003-11-01
Annexes designated "normative" are part of the body of the standard
In this standard, annex ZA is normative
Annex ZA has been added by CENELEC
Endorsement notice
The text of the International Standard IEC 60034-18-22:2000 was approved by CENELEC as a European Standard without any modification
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EN 60034−18−22:2001
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CONTENTS
INTRODUCTION 4
1 Scope 5
2 Normative references 5
3 General guidelines 5
3.1 Category I insulation components 5
3.2 Category II insulation components 6
3.3 Definition of generic identity 6
4 Documentation 7
5 General substitution procedures 7
6 Component substitution category 7
6.1 Category I component substitution 7
6.2 Category II component substitution 9
7 Sealed tube test procedure 9
7.1 General 9
7.2 Test apparatus 10
7.3 Sample preparation 10
7.4 Contents of tubes 10
7.5 Preparation of tubes 11
7.6 Thermal conditioning 11
7.7 Opening procedure 12
7.8 Evaluation of samples 12
7.9 Requirement 12
Figure 1 – Test apparatus 13
Table 1 – Thermal ageing test methods for varnish 8
Annex ZA (normative) Normative references to international publications with their corresponding European publications 14
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INTRODUCTION
IEC 60034-18-1 presents general principles for evaluation and classification of insulation
systems used in rotating electrical machines Unless the procedures of this part indicate
otherwise, the principles of IEC 60034-18-1 should be followed
IEC 60034-18-21 deals with the thermal evaluation and classification of insulation systems
for wire-wound windings in respect of normal procedures as referred to in 5.3.2.1 of
IEC 60034-18-1
This part of IEC 60034 is concerned with procedures of verification of the effects of changes
in insulation systems for wire-wound windings covered by 5.3.2.2 of IEC 60034-18-1
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ROTATING ELECTRICAL MACHINES – Part 18-22: Functional evaluation of insulation systems –
Test procedures for wire-wound windings –
Classification of changes and insulation component substitutions
1 Scope
This part of IEC 60034 gives test procedures for the thermal evaluation and classification of changes and insulation component substitution in insulation systems used or proposed for use in a proven insulation system used in wire-wound windings The test procedures are comparative in that the performance of a candidate system is compared to that of a reference system which has previously been proved by experience or has been evaluated by one of the procedures given in 60034-18-21 and to which the change or substitution is intended
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of IEC 60034 For dated references, subsequent amend-ments to, or revisions of, any of these publications do not apply However, parties to agreements based on this part of IEC 60034 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below For undated references, the latest edition of the normative document referred to applies Members of IEC and ISO maintain registers of currently valid International Standards
IEC 60034-18-21:1992, Rotating electric machines – Part 18: Functional evaluation of
insulation systems – Section 21: Test procedures for wire-wound windings – Thermal evaluation and classification
IEC 60172:1987, Test procedure for the determination of the temperature index of enamelled
winding wires
IEC 60216 (all parts), Guide for the determination of thermal endurance properties of
electrical insulating materials
IEC 60317 (all parts), Specifications for particular types of winding wires
IEC 61033:1991, Test methods for the determination of bond strength of impregnating agents
to an enamelled wire substrate
3 General guidelines
3.1 Category I insulation components 3.1.1 Phase insulation and ground insulation
Insulation separating the windings from each other or from the magnetic core, for example slot liners, but not wedges, closures or top of slot packers all of which are considered as category II components (see 3.2)
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3.1.2 Turn (conductor) insulation
The resinous (enamel) coating or wrapped insulation, fibrous or film, on winding wire
3.1.3 Impregnating varnishes
These include both solvented and solventless varnishes
3.1.4 Encapsulant
Moulded or cast insulation which completely encases the insulation system and which is the only barrier between the winding and the outer surface of the motor
3.2 Category II insulation components
Category II components include any constituent of an insulation system not covered by 3.1,
as listed below If the testing organization wants to consider some of these components as category I insulation components, it may do so
a) Series/parallel winding insulation as used on multi-voltage windings
b) Insulation between auxiliary and main winding as used on single-phase motors This is not
to be considered as phase insulation as described in 3.1.1
NOTE If winding insulation according to item a) or b) above is, in normal operation, stressed like phase insulation, then it must be tested as a category I component.
c) Layer insulation: insulation which is interleaved between successive layers of insulated wire in the same winding (same phase)
d) Sleeving and tubing
e) Slot wedges and closures
NOTE If, in normal operation, the closure is stressed like the slot liner, then it must be tested as a category I component.
f) Securement tapes and tie-cords
g) Lead wire insulation
3.3 Definition of generic identity
Generic identity embraces both chemical and physical identity Chemical composition shall be established from analytical data which should, for instance, be based on appropriate spectroscopic analysis (IR, etc.) complemented with thermogravimetric, DTA and atomic absorption analysis
Physical identity shall be established by mechanical and electrical tests appropriate to the component DTA analysis can complement these tests
For several properties, like tan d and modulus, dependence on temperature can complement both the chemical and physical picture
Where the insulation component is made from more than one material, for example an adhesive bonded laminate, a mineral filled encapsulant, or a dual coat winding wire, generic identity shall be established with respect to each material of the component separately In the case of a filled component, the relative amounts of filler and polymeric material shall be the same in both candidate and reference material
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4 Documentation
The following information shall be obtained for any proposed substitution material:
a) detailed chemical analysis;
b) supplier and reference;
c) thickness;
d) thermal endurance, such as temperature index, and relevant standard or specification, for example:
1) IEC 60317 type for winding wire, 2) voltage rating, style or type for lead wire
The same information is also required for the reference system
5 General substitution procedures
The test procedures to be followed for any particular substitution depend on the specific substitution involved These are in clause 6
Any substitution to an insulation system shall be classified as a substitution procedure A, B, C
or D The action required in respect of validation for each procedure is listed below
NOTE Procedures A, B, and C are considered minimum requirements At the discretion of the testing organisation procedure D may be used in place of procedures A, B or C.
– Procedure A
If the data enables the investigator to establish the generic identity according to 3.3, documentation data as described in clause 4 is sufficient to accept substitution without test
– Procedure B Change requiring sealed tube test procedure (see clause 7)
– Procedure C Change requiring a single temperature ongoing programme using a procedure, for example motorette procedure, selected from IEC 60034-18-21
– Procedure D Change requiring a full three-temperature test procedure as required by IEC 60034-18-21
Specific component substitutions are assigned to one of the above categories in clause 6
6 Component substitution category
6.1 Category I component substitution 6.1.1 Phase insulation and ground insulation 6.1.1.1 Generically identical, the same or increased thickness
Procedure A applies
6.1.1.2 Generically identical but thinner
Procedure C applies
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6.1.1.3 Generically different
Procedure D applies
6.1.2 Turn (conductor) insulation i.e winding wire
6.1.2.1 Non-bondable wire
a) Where the insulation coating of the substitute material is generically identical with the original and where it conforms to the same IEC 60317 specification part or to one with a higher temperature class number, then; procedure A applies
b) For other substitutions; procedure D applies
6.1.2.2 Bondable wire
a) Where the insulation coating and bonding layer of the substitute material are identical with the original and where it conforms to the same IEC 60317 specification part or to one with a higher temperature class number, then; procedure A applies
b) Where the substitute bondable wire does not comply with item a); procedure D applies
6.1.2.3 Aluminium instead of copper wire
Thermal ageing test results on an insulation system containing copper winding wire are applicable to an otherwise identical system containing aluminium wire Hence, substituting an aluminium wire for a copper wire with the same generic insulation coating having the same or higher temperature index number; procedure A applies
NOTE Thermal ageing test results on an insulation system containing aluminium wire are not applicable to an otherwise identical system with copper wire.
6.1.2.4 Top wire coat
Where the only change to a winding wire is adding or changing a top wire coat over the same proven base coat; procedure B or C applies
6.1.3 Impregnating varnish or resin
The temperature indexes of both the substitute varnish and the varnish used in the proven system shall be determined by analysis of the varnish manufacturer’s thermal-ageing data for the tests specified in table 1
Table 1 – Thermal ageing test methods for varnish
Helical coil IEC 61033*
IEC 60216 using helical coil test according to IEC 61033 as diagnostic test
Varnished twisted pairs IEC 60172
* Temperature index is to be determined based on a 22 N end-point.
Both tests must be carried out Only data from the same test shall be compared
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