SIST EN IEC 60270:2025
(Main)High-voltage test techniques - Charge-based measurement of partial discharges
High-voltage test techniques - Charge-based measurement of partial discharges
IEC 60270:2025 is applicable to the charge-based measurement of partial discharges which occur in electrical apparatus, components or systems when tested with alternating voltages (AC) up to 500 Hz or with direct voltage (DC).
This document:
– defines the terms used;
– defines the quantities to be measured;
– describes the measurement frequencies as well as the test and measuring circuits which may be used;
– defines analogue and digital measuring methods required for common applications;
– specifies methods for calibration and requirements of instruments used for calibration;
– gives guidance on test procedures;
– gives some assistance concerning the discrimination of partial discharges from external interference.
The provisions of this document are used in the drafting of specifications relating to partial discharge measurements for specific power apparatus. It deals with electrical measurements of impulsive (short-duration) partial discharges, but reference is also made to non-electrical methods primarily used for partial discharge location (see Annex F). Diagnosis of the behaviour of specific power apparatus can be aided by digital processing of partial discharge data (see Annex E) and also by non-electrical methods that are primarily used for partial discharge location (see Annex F).
This document is primarily concerned with electrical measurement of partial discharge in terms of apparent charge for specific power apparatus made during tests with alternating voltage, but specific problems which arise when tests are made with direct voltage are considered in Clause 11.
The terminology, definitions, basic test circuits and procedures often also apply to tests at other frequencies, but special test procedures and measuring system characteristics which are not considered in this document may be required. For measurements at higher frequency ranges, see IEC TS 62478.
Annex A provides normative requirements for performance tests on calibrators.
This fourth edition cancels and replaces the third edition published in 2000, and Amendment 1:2015. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) Title modified.
b) Use with alternating voltages up to 500 Hz or with direct voltage.
c) Clear focus on charge-based partial discharge measurements.
d) Streamlined performance checks for partial discharge measurement system components.
e) Improved normative Annex A for performance tests on calibrators.
f) Revised and new informative Annexes.
In a future revision, this document will seek horizontal publication status in accordance with IEC Guide 108.
Hochspannungs-Prüftechnik - Ladungsbasierte Messung von Teilentladungen
Techniques des essais à haute tension - Mesures des décharges partielles
L'IEC 60270:2025 s'applique aux mesurages fondés sur les charges pour les décharges partielles (DP) qui se produisent dans les appareillages, composants ou systèmes électriques soumis à des essais sous des tensions alternatives inférieures ou égales à 500 Hz ou sous une tension continue.
Le présent document:
– définit les termes utilisés;
– définit les grandeurs à mesurer;
– décrit les fréquences de mesure, ainsi que les circuits d'essai et de mesure qui peuvent être utilisés;
– définit les méthodes de mesure analogique et numérique exigées pour les applications courantes;
– spécifie les méthodes d'étalonnage et les exigences relatives aux appareils de mesure utilisés pour l'étalonnage;
– fournit des recommandations pour les procédures d'essai;
– donne des conseils pour distinguer les décharges partielles des interférences externes.
Les dispositions du présent document sont utilisées pour élaborer les spécifications relatives aux mesurages de décharges partielles dans le cadre d'appareillages de puissance spécifiques. Le présent document traite des mesurages électriques des décharges partielles impulsionnelles (de courte durée), mais il est également fait référence à des méthodes non électriques, principalement utilisées pour la localisation des décharges partielles (voir l'Annexe F). Les diagnostics concernant le comportement d'appareillages de puissance spécifiques peuvent être facilités par le traitement numérique des données de décharges partielles (voir l'Annexe E), mais également par des méthodes non électriques, utilisées principalement pour la localisation des décharges partielles (voir l'Annexe F).
Le présent document traite essentiellement des mesurages électriques de décharges partielles fondés sur la charge apparente d'appareillages de puissance spécifiques, effectués dans le cadre d'essais sous une tension alternative, mais l'Article 11 traite néanmoins des problèmes particuliers susceptibles de se produire lors d'essais sous une tension continue.
La terminologie, les définitions, les circuits d'essai de référence et les procédures sont souvent utilisés pour les essais à d'autres fréquences de mesure des DP, mais des procédures d'essai et des caractéristiques de systèmes de mesure particulières, qui ne sont pas traitées dans le présent document, peuvent être exigées. Pour les mesurages effectués dans des plages de fréquences supérieures, voir l'IEC TS 62478.
L'Annexe A fournit les exigences normatives relatives aux essais de détermination des caractéristiques des dispositifs d'étalonnage.
Cette quatrième édition annule et remplace la troisième édition parue en 2000 et l'Amendement 1:2015. Cette édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) modification du titre;
b) utilisation de tensions alternatives inférieures ou égales à 500 Hz ou d'une tension continue;
c) valorisation des mesurages de décharges partielles fondés sur les charges;
d) simplification des contrôles des caractéristiques pour les composants des systèmes de mesure de décharges partielles;
e) amélioration de l'Annexe A normative pour les essais de détermination des caractéristiques des dispositifs d'étalonnage;
f) révision des annexes informatives existantes et ajout d'annexes informatives.
Dans une future révision, ce document cherchera
Visokonapetostne preskusne tehnike - Meritve delnih razelektritev na podlagi električnih nabojev
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-oktober-2025
Nadomešča:
SIST EN 60270:2002
SIST EN 60270:2002/A1:2016
Visokonapetostne preskusne tehnike - Meritve delnih razelektritev na podlagi
električnih nabojev
High-voltage test techniques - Charge-based measurement of partial discharges
Hochspannungs-Prüftechnik - Ladungsbasierte Messung von Teilentladungen
Techniques des essais à haute tension - Mesures des décharges partielles
Ta slovenski standard je istoveten z: EN IEC 60270:2025
ICS:
17.220.20 Merjenje električnih in Measurement of electrical
magnetnih veličin and magnetic quantities
19.080 Električno in elektronsko Electrical and electronic
preskušanje testing
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN IEC 60270
NORME EUROPÉENNE
EUROPÄISCHE NORM August 2025
ICS 19.080; 17.220.20 Supersedes EN 60270:2001; EN 60270:2001/A1:2016
English Version
High-voltage test techniques - Charge-based measurement of
partial discharges
(IEC 60270:2025)
Techniques des essais à haute tension - Mesurages des Hochspannungs-Prüftechnik - Ladungsbasierte Messung
décharges partielles fondés sur les charges von Teilentladungen
(IEC 60270:2025) (IEC 60270:2025)
This European Standard was approved by CENELEC on 2025-07-10. 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 60270:2025 E
European foreword
The text of document 42/452/FDIS, future edition 4 of IEC 60270, prepared by TC 42 "High-voltage
and high-current test techniques" was submitted to the IEC-CENELEC parallel vote and approved by
CENELEC as EN IEC 60270:2025.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2026-08-31
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2028-08-31
document have to be withdrawn
This document supersedes EN 60270:2001 and all of its amendments and corrigenda (if any).
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.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 60270:2025 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standard indicated:
IEC 60034-18-41 NOTE Approved as EN 60034-18-41
IEC 60034-18-42 NOTE Approved as EN 60034-18-42
IEC 60034-27-1 NOTE Approved as EN IEC 60034-27-1
IEC 60076-3 NOTE Approved as EN 60076-3
IEC 60137 NOTE Approved as EN 60137
IEC 61558-1 NOTE Approved as EN IEC 61558-1
IEC 62068 NOTE Approved as EN 62068
CISPR 16-1-1:2019 NOTE Approved as EN IEC 55016-1-1:2019 (not modified)
IEC 60567 NOTE Approved as EN IEC 60567
IEC 60599 NOTE Approved as EN IEC 60599
IEC 61181:2007 NOTE Approved as EN 61181:2007 (not modified)
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 1 Where 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.cencenelec.eu.
Publication Year Title EN/HD Year
IEC 60060-2 - High-voltage test techniques - Part 2: EN IEC 60060-2 -
Measuring systems
IEC 60270 ®
Edition 4.0 2025-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
High-voltage test techniques – Charge-based measurement of partial discharges
Techniques des essais à haute tension – Mesurages des décharges partielles
fondés sur les charges
ICS 19.080, 17.220.20 ISBN 978-2-8327-0398-4
IEC 60270:2025-06(en-fr)
– 2 – IEC 60270:2025 © IEC 2025
CONTENTS
FOREWORD . 6
1 Scope . 8
2 Normative references. 8
3 Terms and definitions . 9
4 Test circuits and measuring systems . 14
4.1 General requirements . 14
4.2 Test circuits for alternating voltages . 15
4.3 Measuring systems for apparent charge . 18
4.3.1 General . 18
4.3.2 Coupling device or ‘quadripole’ . 18
4.3.3 Pulse train response of instruments for the measurement of apparent
charge . 18
4.3.4 Wide-band PD measuring systems . 20
4.3.5 Wide-band PD instruments with active integrator . 20
4.3.6 Narrow-band PD instruments . 21
4.4 Requirements for measurements with digital PD-instruments . 21
4.4.1 General . 21
4.4.2 Requirements for measurement of apparent charge q . 22
4.4.3 Requirements for measurement of test voltage magnitude and phase . 22
4.5 Measuring systems for derived quantities . 22
4.5.1 Coupling device . 22
4.5.2 Instruments for the measurement of pulse repetition rate n . 22
4.5.3 Instruments for the measurement of average apparent discharge
current I . 22
4.5.4 Instruments for the measurement of apparent discharge power P . 23
4.6 Instruments for the measurement of the radio disturbance voltage. 23
4.7 Instrumentation for PD detection >1 MHz . 23
5 Calibration of a measuring system in the complete test circuit . 24
5.1 General . 24
5.2 Calibration procedure . 24
6 Calibrators. 26
6.1 General . 26
6.2 Calibrators for the calibration of a measuring system in the complete test
circuit . 27
6.3 Calibrators for performance tests on measuring systems . 28
7 Maintaining the characteristics of calibrators and measuring systems . 28
7.1 General . 28
7.2 Schedule of tests . 28
7.3 Maintaining the characteristics of calibrators . 29
7.3.1 Type tests on calibrators . 29
7.3.2 Routine tests on calibrators . 29
7.3.3 Performance tests on calibrators . 29
7.3.4 Performance checks on calibrators . 29
7.3.5 Record of performance . 30
7.4 Maintaining the characteristics of PD measuring systems . 30
7.4.1 General . 30
7.4.2 Type tests on PD measuring systems . 30
IEC 60270:2025 © IEC 2025 – 3 –
7.4.3 Routine tests on measuring systems . 31
7.4.4 Performance checks on PD measuring systems . 31
7.4.5 Checks for additional capabilities of digital measuring systems . 32
7.4.6 Record of performance . 32
8 Partial discharge measurements during tests with alternating voltage . 33
8.1 General . 33
8.2 Conditioning of the test object . 33
8.3 Choice of test procedure . 33
8.3.1 General . 33
8.3.2 Determination of the partial discharge inception and extinction voltages . 34
8.3.3 Determination of the partial discharge magnitude at a specified test
voltage . 34
9 Measuring uncertainty and sensitivity . 34
10 External disturbances and interference . 35
11 Partial discharge measurements during tests with direct voltage . 36
11.1 General . 36
11.2 PD quantities . 36
11.3 Voltages related to partial discharges . 37
11.3.1 Partial discharge inception and extinction voltages . 37
11.3.2 Partial discharge test voltage . 37
11.4 Test circuits and measuring systems . 37
11.5 Test procedures with regard to external disturbances . 37
11.5.1 Choice of test procedures . 37
11.5.2 Disturbances . 38
Annex A (normative) Performance tests on calibrators . 39
A.1 General . 39
A.2 Comparison method . 41
A.3 Numerical integration method .
...
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