EN IEC 60931-2:2025

Shunt power capacitors of the non-self-healing type for AC systems having a rated voltage up to and including 1 000 V - Part 2: Ageing test and destruction test

IEC 60931-2:2025 applies to capacitors according to IEC 60931-1 and gives the requirements for the ageing test and destruction test for these capacitors.

Nichtselbstheilende Leistungs-Parallelkondensatoren für Wechselstromanlagen mit einer Nennspannung bis einschließlich 1000 V – Teil 2: Alterungs- und Zerstörungsprüfung

Condensateurs shunt de puissance non autorégénérateurs pour réseaux à courant alternatif de tension assignée inférieure ou égale à 1 000 V - Partie 2: Essais de vieillissement et de destruction

IEC 60931-2:2025 s’applique aux condensateurs conformes à l’IEC 60931-1 et donne les exigences relatives aux essais de vieillissement et de destruction de ces condensateurs.

Nesamoozdravljivi vzporedni močnostni kondenzatorji za izmenične tokovne sisteme z naznačeno napetostjo do vključno 1000 V - 2. del: Preskus na staranje in porušitev (IEC 60931-2:2025)

Ta del standarda IEC 60931 se uporablja za kondenzatorje v skladu s standardom IEC 60931-1 ter določa zahteve za preskus na staranje in porušitev za te kondenzatorje.

General Information

• Status: Published
• Publication Date: 28-Aug-2025
• ICS: 29.120.99 - Other electrical accessories
• ICS: 31.060.70 - Power capacitors
• Technical Committee: CLC/SR 33 - Power capacitors
• Drafting Committee: IEC/TC 33 - IEC_TC_33
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 29-Aug-2025
• Due Date: 03-Oct-2025
• Completion Date: 29-Aug-2025
• Directive: 2014/35/EU - Directive 2014/35/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of electrical equipment designed for use within certain voltage limits
• Mandate: M/511 - Mandate to CEN, CENELEC and ETSI relating to harmonised standards in the field of the Low Voltage Directive
• Ref Project: SIST EN IEC 60931-2:2025 - Shunt power capacitors of the non-self-healing type for AC systems having a rated voltage up to and including 1000 v - Part 2: Ageing test and destruction test (IEC 60931-2:2025)

Relations

• Replaces: EN 60931-2:1996 - Shunt power capacitors of the non-self-healing type for a.c. systems having a rated voltage up to and including 1 kV - Part 2: Ageing test and destruction test
• Effective Date: 23-Jan-2023

Overview

EN IEC 60931-2:2025 is a European and International Standard developed by CLC and IEC technical committee 33, focusing on shunt power capacitors of the non-self-healing type used in AC systems with a rated voltage up to and including 1,000 V. This part 2 document specifies the ageing test and destruction test requirements to ensure the reliability, durability, and safety of these capacitors in practical applications.

The 2025 revision replaces the prior 1999 version, updating testing procedures to reflect advancements in capacitor technology and harmonizing requirements with the latest IEC 60931-1:2025 general standard for these power capacitors.

Key Topics

• Scope: EN IEC 60931-2:2025 applies exclusively to non-self-healing shunt power capacitors designed for low-voltage AC networks (≤1,000 V), complementing general requirements defined in IEC 60931-1:2025.

• Ageing Test:

  • Purpose: Verify capacitor performance and stability over extended operational conditions.
  • Conditioning involves maintaining capacitor case temperature at the defined highest mean temperature plus adjustments based on test results.
  • Conducted either with forced air circulation within an enclosure or immersion in a heated liquid bath, ensuring strict temperature control (±2 °C tolerance).
  • Test sequence includes energizing capacitors at 1.25 times rated voltage for 750 hours, followed by 1,000 discharge cycles at twice the rated voltage with an inductive load, then repeating the initial voltage test for another 750 hours.
  • Requirements ensure no permanent breakdowns, interruptions, or flashovers occur during testing.

• Destruction Test:

  • Designed to assess the capacitor's behavior under extreme overvoltage or fault conditions until physical failure occurs.
  • Involves application of increased voltage to provoke capacitor destruction safely, typically following protocols detailed in the standard.
  • Includes specifics on the electric circuit configuration to carry out the destruction test safely and reproducibly.

• Integration with IEC 60931-1:2025:

  • This standard is to be used in conjunction with Part 1, which provides overarching design, safety, and testing principles for non-self-healing shunt capacitors.
  • Clause numbering and terminology are aligned with IEC 60931-1 to facilitate cohesive application.

Applications

• Power Factor Correction: Ensuring longevity and robustness of capacitors used for power factor improvement in industrial and commercial electrical installations.

• Load Balancing in AC Systems: Reliable capacitor performance is critical to maintain system voltage stability and reduce energy losses.

• Electrical Network Protection: Through destruction testing, maintaining safety standards by assessing failure modes and ensuring capacitors safely contain or mitigate catastrophic failures.

• Component Qualification: Manufacturers and testing laboratories use EN IEC 60931-2:2025 as a benchmark for quality control and certification of non-self-healing shunt capacitors destined for use under 1,000 V AC systems.

Related Standards

• EN IEC 60931-1:2025 – Shunt power capacitors of the non-self-healing type for AC systems having a rated voltage up to and including 1,000 V - Part 1: General. This companion document outlines general requirements for these capacitors.

• IEC 60068 series – Environmental testing standards that may complement ageing tests for environmental resilience.

• IEC 61000 series – Electromagnetic compatibility standards relevant when capacitors are applied in complex electrical systems.

Keywords

Non-self-healing power capacitors, shunt capacitors, AC systems, rated voltage 1,000 V, ageing test, destruction test, capacitor testing, IEC 60931-2, EN IEC 60931-2:2025, power factor correction, electrical component standards, capacitor durability, electrical safety testing, CLC standard.

Standards Content (Sample)

SLOVENSKI STANDARD
01-oktober-2025
Nadomešča:
SIST EN 60931-2:1999
Nesamoozdravljivi vzporedni močnostni kondenzatorji za izmenične tokovne
sisteme z naznačeno napetostjo do vključno 1000 V - 2. del: Preskus na staranje in
porušitev (IEC 60931-2:2025)
Shunt power capacitors of the non-self-healing type for AC systems having a rated
voltage up to and including 1000 v - Part 2: Ageing test and destruction test (IEC 60931-
2:2025)
Nichtselbstheilende Leistungs-Parallelkondensatoren für Wechselstromanlagen mit einer
Nennspannung bis einschließlich 1000 V – Teil 2: Alterungs- und Zerstörungsprüfung
(IEC 60931-2:2025)
Condensateurs shunt de puissance non autorégénérateurs pour réseaux à courant
alternatif de tension assignée inférieure ou égale à 1 000 v - Partie 2: Essais de
vieillissement et de destruction (IEC 60931-2:2025)
Ta slovenski standard je istoveten z: EN IEC 60931-2:2025
ICS:
29.120.99 Druga električna dodatna Other electrical accessories
oprema
31.060.70 Močnostni kondenzatorji Power capacitors
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 60931-2

NORME EUROPÉENNE
EUROPÄISCHE NORM August 2025
ICS 29.120.99; 31.060.70 Supersedes EN 60931-2:1996
English Version
Shunt power capacitors of the non-self-healing type for AC
systems having a rated voltage up to and including 1 000 V -
Part 2: Ageing test and destruction test
(IEC 60931-2:2025)
Condensateurs shunt de puissance non autorégénérateurs Nichtselbstheilende Leistungs-Parallelkondensatoren für
pour réseaux à courant alternatif de tension assignée Wechselstromanlagen mit einer Nennspannung bis
inférieure ou égale à 1 000 V - Partie 2: Essais de einschließlich 1000 V - Teil 2: Alterungs- und
vieillissement et de destruction Zerstörungsprüfung
(IEC 60931-2:2025) (IEC 60931-2:2025)
This European Standard was approved by CENELEC on 2025-07-31. 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 60931-2:2025 E

European foreword
The text of document 33/709/CDV, future edition 3 of IEC 60931-2, prepared by TC 33 "Power
capacitors and their applications" was submitted to the IEC-CENELEC parallel vote and approved by
CENELEC as EN IEC 60931-2:2025.
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 60931-2:1996 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 60931-2:2025 was approved by CENELEC as a European
Standard without any modification.
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 60931-1 2025 Shunt power capacitors of the non-self- EN IEC 60931-1 2025
healing type for AC systems having a rated
voltage up to and including 1 000 V - Part
1: General
IEC 60931-2 ®
Edition 3.0 2025-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Shunt power capacitors of the non-self-healing type for AC systems having a
rated voltage up to and including 1 000 V –
Part 2: Ageing test and destruction test
Condensateurs shunt de puissance non autorégénérateurs pour réseaux à
courant alternatif de tension assignée inférieure ou égale à 1 000 V –
Partie 2: Essais de vieillissement et de destruction
ICS 29.120.99, 31.060.70 ISBN 978-2-8327-0495-0
IEC 60931-2:2025-06(en-fr)
IEC 60931-2:2025 © IEC 2025
CONTENTS
FOREWORD. 2
1 Scope . 4
2 Normative references . 4
6 Tests . 4
6.12 Ageing test . 4
6.12.1 Conditioning . 4
6.12.2 Test sequence . 5
6.12.3 Test requirements . 6
6.13 Destruction test . 6
6.13.1 General . 6
6.13.2 Test sequence . 6
6.13.3 Test requirements . 8

Figure 1 – Circuit to perform the destruction test . 7

IEC 60931-2:2025 © IEC 2025
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
Shunt power capacitors of the non-self-healing type for AC systems
having a rated voltage up to and including 1 000 V –
Part 2: Ageing test and destruction test

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, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by 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 by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence between
any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). IEC takes no position concerning the evidence, validity or applicability of any claimed patent rights in
respect thereof. As of the date of publication of this document, IEC had not received notice of (a) patent(s), which
may be required to implement this document. However, implementers are cautioned that this may not represent
the latest information, which may be obtained from the patent database available at https://patents.iec.ch. IEC
shall not be held responsible for identifying any or all such patent rights.
IEC 60931-2 has been prepared by technical committee 33: Power capacitors and their
applications. It is an International Standard.
This third edition cancels and replaces the second edition published in 1995. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) Deletion of self-healing test.
This International Standard is to be used in conjunction with IEC 60931-1:2025. The numbering
of the clauses and subclauses in this document corresponds to t
...