EN 60885-3:2015

SLOVENSKI STANDARD
01-september-2015
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Electrical test methods for electric cables - Part 3: Test methods for partial discharge
measurements on lengths of extruded power cables
Elektrische Prüfverfahren für Starkstromkabel - Teil 3: Prüfverfahren zur
Teilentladungsmessung an Längen von extrudierten Kabeln
Méthodes d'essais électriques pour les câbles électriques - Partie 3: Méthodes d'essais
pour la mesure des décharges partielles sur des longueurs de câbles de puissance
extrudés
Ta slovenski standard je istoveten z: EN 60885-3:2015
ICS:
29.060.20 Kabli Cables
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 60885-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2015
ICS 29.060.20 Supersedes EN 60885-3:2003
English Version
Electrical test methods for electric cables - Part 3: Test methods
for partial discharge measurements on lengths of extruded
power cables
(IEC 60885-3:2015)
Méthodes d'essais électriques pour les câbles électriques - Elektrische Prüfverfahren für Starkstromkabel - Teil 3:
Partie 3: Méthodes d'essais pour la mesure des décharges Prüfverfahren zur Teilentladungsmessung an Längen von
partielles sur des longueurs de câbles de puissance extrudierten Kabeln
extrudés (IEC 60885-3:2015)
(IEC 60885-3:2015)
This European Standard was approved by CENELEC on 2015-05-14. 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, 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
© 2015 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 60885-3:2015 E
Foreword
The text of document 20/1560/FDIS, future IEC 60885-3, prepared by IEC/TC 20 "Electric cables" was
submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 60885-3:2015.

The following dates are fixed:
(dop) 2016-02-14
• latest date by which the document has to be
implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2018-05-14
• latest date by which the national
standards conflicting with the
document have to be withdrawn
This document supersedes EN 60885-3:2003.

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 60885-3:2015 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 60060-1 NOTE Harmonized as EN 60060-1.

- 3 - EN 60885-3:2015
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 60270 2000 High-voltage test techniques - Partial EN 60270 2001
discharge measurements
IEC 60885-3 ®
Edition 2.0 2015-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electrical test methods for electric cables –

Part 3: Test methods for partial discharge measurements on lengths of extruded

power cables
Méthodes d'essais électriques pour les câbles électriques –

Partie 3: Méthodes d'essais pour la mesure des décharges partielles sur des

longueurs de câbles de puissance extrudés

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.060.20 ISBN 978-2-8322-2582-0

– 2 – IEC 60885-3:2015 © IEC 2015
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references. 6
3 Terms, definitions and symbols . 6
3.1 Terms and definitions . 6
3.2 Symbols used in Figures 1 to 14 . 6
4 Overview . 7
4.1 General . 7
4.2 Object . 7
4.3 Problem of superposition of travelling waves for long lengths . 7
5 Partial discharge tests . 10
5.1 Test apparatus . 10
5.1.1 Equipment . 10
5.1.2 Test circuit and instruments. 10
5.1.3 Double pulse generator . 10
5.1.4 Terminal impedance . 10
5.1.5 Reflection suppressor . 10
5.2 Setting up the test circuit . 10
5.2.1 Determination of characteristic properties of the test circuit . 10
5.2.2 Terminal impedance . 10
5.2.3 Determination of superposition of travelling waves . 11
5.2.4 Reflection suppressor . 11
5.2.5 Calibration of the measuring system in the complete test circuit . 11
5.2.6 Sensitivity . 11
5.3 Measurement procedures . 11
5.3.1 General . 11
5.3.2 Short cable lengths including type test lengths . 12
5.3.3 Long cable lengths tested without a terminal impedance . 12
5.3.4 Long cable lengths tested with a terminal impedance . 13
5.3.5 Long cable lengths tested with a reflection suppressor . 14
5.4 Voltage levels/partial discharge limits . 15
5.5 Double pulse behaviour and plotting the double pulse diagram . 15
5.6 Requirements for the terminal impedance . 16
5.6.1 General . 16
5.6.2 RC element . 16
5.6.3 RLC element series resonance circuit . 17
Bibliography . 21

Figure 1 – Discharge site exactly at the cable end remote from the detector (x = l) . 7
Figure 2 – Discharge site at a distance x = x – Travelling waves . 8
Figure 3 – Attenuation of PD pulses along the cable . 8
Figure 4 – Superposition and attenuation of PD pulses . 9
Figure 5 – Input unit Z connected in series with the coupling capacitor, C . 17
A K
Figure 6 – Input unit Z connected in series with the cable, C . 18
A x
Figure 7 – Bridge circuit . 18

IEC 60885-3:2015 © IEC 2015 – 3 –
Figure 8 – Connection of the terminal impedance Z . 18
w
Figure 9 – Connection of the reflection suppressor, RS . 19
Figure 10 – Connection of the double pulse generator into the measuring circuit in
Figure 5 . 19
Figure 11 – Double pulse diagram type 1 without negative superposition . 19
Figure 12 – Double pulse diagram type 2 with negative superposition between t and t . 20
1 2
Figure 13 – Double pulse diagram type 3 with negative and positive superpositions
between t and t . 20
1 2
Figure 14 – Connection of the double pulse generator for the test circuit in Figure 9
with the reflection suppressor . 20

– 4 – IEC 60885-3:2015 © IEC 2015
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRICAL TEST METHODS FOR ELECTRIC CABLES –

Part 3: Test methods for partial discharge measurements
on lengths of extruded power cables

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,
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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 b
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