EN 60034-27-3:2016

SLOVENSKI STANDARD
01-november-2016
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Rotating electrical machines - Part 27-3: Dielectric dissipation factor measurement on
stator winding insulation of rotating electrical machines (IEC 60034-27-3:2015)
Drehende elektrische Maschinen - Teil 27-3: Messung des dielektrischen Verlustfaktors
an der Ständerwicklungsisolierung drehender elektrischer Maschinen (IEC 60034-27-
3:2015)
Machines électriques tournantes - Partie 27-3: Mesure du facteur de dissipation
diélectrique sur le système d'isolation des enroulements statoriques des machines
électriques tournantes (IEC 60034-27-3:2015)
Ta slovenski standard je istoveten z: EN 60034-27-3:2016
ICS:
29.160.01 Rotacijski stroji na splošno Rotating machinery in
general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 60034-27-3

NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2016
ICS 29.160
English Version
Rotating electrical machines - Part 27-3: Dielectric dissipation
factor measurement on stator winding insulation of rotating
electrical machines
(IEC 60034-27-3:2015)
Machines électriques tournantes - Partie 27-3: Mesure du Drehende elektrische Maschinen - Teil 27-3: Messung des
facteur de dissipation diélectrique sur le système d'isolation dielektrischen Verlustfaktors an der
des enroulements statoriques des machines électriques Ständerwicklungsisolierung drehender elektrischer
tournantes Maschinen
(IEC 60034-27-3:2015) (IEC 60034-27-3:2015)
This European Standard was approved by CENELEC on 2016-01-20. 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
© 2016 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 60034-27-3:2016 E
European foreword
The text of document 2/1803/FDIS, future edition 1 of IEC 60034-27-3, prepared by IEC/TC 2
"Rotating machinery" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC
as EN 60034-27-3:2016.
The following dates are fixed:
(dop) 2016-12-24
• latest date by which the document has to be implemented at
national level by publication of an identical national
standard or by endorsement
(dow) 2019-06-24
• latest date by which the national standards conflicting with
the document have to be withdrawn

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 60034-27-3:2015 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 TS 60034-27 NOTE Harmonized as CLC/TS 60034-27.
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 60060-1 -  High-voltage test techniques - EN 60060-1 -
Part 1: General definitions and test
requirements
IEC 60060-2 -  High-voltage test techniques - EN 60060-2 -
Part 2: Measuring systems
IEC 60034-27-3 ®
Edition 1.0 2015-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Rotating electrical machines –

Part 27-3: Dielectric dissipation factor measurement on stator winding

insulation of rotating electrical machines

Machines électriques tournantes –

Partie 27-3: Mesure du facteur de dissipation diélectrique sur le système

d’isolation des enroulements statoriques des machines électriques tournantes

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.160 ISBN 978-2-8322-3061-9

– 2 – IEC 60034-27-3:2015 © IEC 2015
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 Theory and measuring techniques . 8
4.1 Dielectric dissipation factor measurement . 8
4.2 Analogue Schering bridge . 10
4.3 Transformer ratio arm bridge. 11
4.4 Digital phase shift measurement . 12
5 Test procedures . 13
5.1 General . 13
5.2 Winding bars and coils . 15
5.2.1 Test object preparation . 15
5.2.2 Guarding techniques . 15
5.2.3 Measuring procedure . 17
5.3 Complete windings . 17
6 Test results . 18
6.1 General . 18
6.2 Winding bars and coils . 19
6.3 Complete windings . 20
7 Test report . 21
7.1 General . 21
7.2 New coils, bars and winding . 21
7.3 Operational aged winding . 22
Annex A (informative) Relationship between power factor and dissipation factor . 24
Bibliography . 26

Figure 1 – Parallel circuit and vector diagram . 8
Figure 2 – Series circuit and vector diagram . 9
Figure 3 – Dielectric losses with increasing voltage (schematic) . 10
Figure 4 – High voltage Schering bridge – Basic circuit . 11
Figure 5 – Transformer ratio arm bridge . 12
Figure 6 – Schematic test set-up of a digital dissipation factor measuring system with
principle current oscillogram . 13
Figure 7 – Example of a curve of tan δ versus voltage ratio U/ U measured in voltage
N
steps of 0,2 U . 14
N
Figure 8 – Arrangement with guard rings electrodes on test objects with insulation gap
(example of preferred insulation gap and guard ring electrode dimensions) . 16
Figure 9 – Application of guard ring electrodes on top of stress control coating . 17
Figure A.1 – Phasor diagram . 24

Table 1 – Maximum values of dielectric dissipation factor of single bars and coils in
new condition with guard ring electrodes up to a rated voltage of U = 21 kV . 19
N
IEC 60034-27-3:2015 © IEC 2015 – 3 –
Table A.1 – Comparison between correlating values of dielectric power factor cos φ
and dielectric dissipation factor tan δ and their difference . 25

– 4 – IEC 60034-27-3:2015 © IEC 2015
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ROTATING ELECTRICAL MACHINES –

Part 27-3: Dielectric dissipation factor measurement on stator
winding insulation of rotating electrical machines

FOREWORD
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