CLC/TS 60034-27:2011

SLOVENSKI STANDARD
01-april-2011
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Rotating electrical machines - Part 27: Off-line partial discharge measurements on the
stator winding insulation of rotating electrical machines (IEC/TS 60034-27:2006)
Drehende elektrische Maschinen - Teil 27: Off-line-Teilentladungsmessungen an der
Statorwicklungsisolation drehender Maschinen (IEC/TS 60034-27:2006)
Machines électriques tournantes - Partie 27: Mesures à l'arrêt des décharges partielles
effectuées sur le système d'isolation des enroulements statoriques des machines
électriques tournantes (CEI/TS 60034-27:2006)
Ta slovenski standard je istoveten z: CLC/TS 60034-27:2011
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.

TECHNICAL SPECIFICATION
CLC/TS 60034-27
SPÉCIFICATION TECHNIQUE
February 2011
TECHNISCHE SPEZIFIKATION
ICS 29.160
English version
Rotating electrical machines -
Part 27: Off-line partial discharge measurements on the stator winding
insulation of rotating electrical machines
(IEC/TS 60034-27:2006)
Machines électriques tournantes -  Drehende elektrische Maschinen -
Partie 27: Mesures à l'arrêt des décharges Teil 27: Off-line-Teilentladungsmessungen
partielles effectuées sur le système an der Statorwicklungsisolation drehender
d'isolation des enroulements statoriques Maschinen
des machines électriques tournantes (IEC/TS 60034-27:2006)
(CEI/TS 60034-27:2006)
This Technical Specification was approved by CENELEC on 2011-01-25.

CENELEC members are required to announce the existence of this TS in the same way as for an EN and to
make the TS available promptly at national level in an appropriate form. It is permissible to keep conflicting
national standards in force.
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. CLC/TS 60034-27:2011 E

Foreword
The text of the Technical Specification IEC/TS 60034-27:2007, prepared by IEC TC 2, Rotating
machinery, was submitted to the formal vote and was approved by CENELEC as CLC/TS 60034-27 on
2011-01-25.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent
rights.
The following date was fixed:
– latest date by which the existence of the CLC/TS
has to be announced at national level (doa) 2011-07-25
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the Technical Specification IEC/TS 60034-27:2006 was approved by CENELEC as a
Technical Specification without any modification.

- 3 - CLC/TS 60034-27:2011
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 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 60270 2000 High-voltage test techniques - Partial EN 60270 2001
discharge measurements
SPÉCIFICATION CEI
TECHNIQUE
IEC
TS 60034-27
TECHNICAL
Première édition
SPECIFICATION
First edition
2006-12
Machines électriques tournantes –
Partie 27:
Mesures à l’arrêt des décharges partielles
effectuées sur le système d’isolation des
enroulements statoriques des machines
électriques tournantes
Rotating electrical machines –
Part 27:
Off-line partial discharge measurements
on the stator winding insulation of rotating
electrical machines
© IEC 2006 Droits de reproduction réservés ⎯ Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in any
utilisée sous quelque forme que ce soit et par aucun procédé, form or by any means, electronic or mechanical, including
électronique ou mécanique, y compris la photocopie et les photocopying and microfilm, without permission in writing from
microfilms, sans l'accord écrit de l'éditeur. the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch
CODE PRIX
XA
PRICE CODE
Commission Electrotechnique Internationale
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
Pour prix, voir catalogue en vigueur
For price, see current catalogue

TS 60034-27 © IEC:2006 – 3 –
CONTENTS
FOREWORD.7
INTRODUCTION.11

1 Scope.15
2 Normative references .15
3 Terms and definitions .15
4 Nature of PD in rotating machines .19
4.1 Basics of PD .19
4.2 Types of PD in rotating machines .21
4.3 Pulse propagation in windings .23
5 Measuring techniques and instruments.25
5.1 General .25
5.2 Influence of frequency response of measurement system.25
5.3 Effects of PD coupling units.27
5.4 Wide-band and narrow band measuring systems.29
6 Visualization of measurements .33
6.1 General .33
6.2 Minimum scope of PD data presentation.33
6.3 Additional means of PD data representation .35
7 Test circuits.39
7.1 General .39
7.2 Individual winding components .39
7.3 Complete winding.43
8 Normalization of measurements .47
8.1 General .47
8.2 Individual winding components .49
8.3 Complete windings .49
9 Test procedures .53
9.1 Acquiring PD measurements on windings and winding components.53
9.2 Identifying and locating the source of partial discharges.61
10 Interpretation of test results.63
10.1 General .63
10.2 Interpretation of PDIV, PDEV and Q .65
m
10.3 PD pattern recognition.69
11 Test report.73

Annex A (informative) On-line partial discharge measurements.79
Annex B (informative) Non-electrical methods of PD detection and methods for
localization .83
Annex C (informative) External noise, disturbance and sensitivity.85
Annex D (informative) Methods of disturbance suppression .91
Annex E (informative) Interpretation of PD magnitude data and phase resolved PD
patterns .103

TS 60034-27 © IEC:2006 – 5 –
Bibliography.111

Figure 1 – Frequency response of a PD pulse and coupling units of various time
constants .27
Figure 2 – Typical pulse responses of wide band and narrow band PD systems.31
Figure 3 – PD magnitude as a function of the normalized test voltage Q =f(U/U ) .35
m max
Figure 4 – Example of a φ-q-n partial discharge pattern where the PD was measured in
series with the test object in accordance with Figure 5b, with colour code for the pulse
number H(n) .37
Figure 5 – Basic test circuits in accordance with IEC 60270.41
Figure 6 – Test circuit for PD measurement (S1.1) on complete winding .43
Figure 7 – Normalization of the test circuit for measurement S1.1.51
Figure 8 – Test voltage applied to the test object during PD measurement .57
Figure 9 – Example for identification and localization of PD sources .71
Figure C.1 – Recharging of the test object by various current components.87
Figure D.1 – Without window masking.91
Figure D.2 – With window masking .91
Figure D.3 – Pulse currents through the measuring circuit .93
Figure D.4 – Example of noise rejection.99
Figure D.5 – Example of cross-talk rejection .101
Figure E.1 – Example PD patterns .105

Table 1 – Connection diagram S1 for open star point.45
Table 2 – Connection diagram S2 for closed star point .45
Table 3 – Connection diagram E1 for open star point.47
Table 4 – Connection diagram E2 for closed star point .47
Table E.1 – Risks associated with the main PD sources in rotating machines .107

TS 60034-27 © IEC:2006 – 7 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ROTATING ELECTRICAL MACHINES –

Part 27: Off-line partial discharge measurements on the stator
winding insulation of rotating electrical machines

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 promot
...