SIST EN IEC 62146-2:2023

Capacitors for high‑voltage alternating current circuit‑breakers - Part 2: TRV capacitors (IEC 62146-2:2023)

IEC 62146-2:2023 is applicable to TRV capacitors used on high-voltage alternating current circuit-breakers with rated voltages above 100 kV with 50 Hz or 60 Hz.
TRV capacitors are installed phase to earth, either in parallel to the bushing on dead tank circuit-breakers, or immersed inside the circuit-breaker, or freestanding close to the circuit-breaker. Their function is to limit the transient recovery voltage (TRV) and the rate of rise of recovery voltage (RRRV) on the circuit-breaker. Capacitors in compliance with this document can be used as TRV capacitor.
This document applies to TRV capacitors falling into one or both of the following categories for:
- mounting on or close to air insulated switchgear (AIS) dead tank and live tank circuit-breakers, or
- mounting on gas insulated switchgear (GIS) circuit-breakers.
The testing for each of the above applications is in some cases different.
This document does not apply to grading capacitors installed in parallel to the chambers of the circuit-breaker, which are specified in IEC 62146-1.
This document does not apply to capacitors not directly associated with high-voltage alternating current circuit-breakers.
The object of this document is:
- to define uniform rules regarding performances, testing and rating
- to define specific safety rules
- to provide a guidance for installation and operation
The TRV capacitor is a sub-component for the circuit-breaker and is specified in accordance with the circuit-breaker specifications according to IEC 62271-1, IEC 62271-100, and if applicable to IEC 62271-203.
TRV capacitors are commonly built with composite or ceramic housings (insulators). Those insulators follow IEC 61462 or IEC 62155. Other housings can be used if they can sustain applicable type tests according to IEC 61462 and IEC 62155.
This International Standard is to be used in conjunction with IEC 62146-1:2013 and IEC 62146-1:2013/AMD1:2016.

Spannungsausgleichskondensatoren für Hochspannungs-Wechselstrom-Leistungsschalter - Teil 2: TRV-Kondensatoren (IEC 62146-2:2023)

Condensateurs pour disjoncteurs à courant alternatif haute tension - Partie 2: Condensateurs TTR (IEC 62146-2:2023)

IEC 62146-2:2023 s’applique aux condensateurs TTR utilisés sur les disjoncteurs à courant alternatif haute tension dont les tensions assignées sont supérieures à 100 kV à 50 Hz ou 60 Hz.
Les condensateurs TTR à neutre reliés à la terre sont installés soit parallèlement à la traversée sur les disjoncteurs à cuve mise à la terre, soit immergés à l’intérieur du disjoncteur, soit de façon autonome à proximité du disjoncteur. Leur fonction est de limiter la tension transitoire de rétablissement (TTR) et la vitesse d’accroissement de la tension de rétablissement (VATR) sur le disjoncteur. Les condensateurs conformes au présent document peuvent être utilisés comme condensateur TTR.
Le présent document s’applique aux condensateurs TTR relevant de l’une ou l’autre des catégories suivantes pour:
– montage sur ou à proximité de disjoncteurs à cuve mise à la terre ou à cuve sous tension des appareillages isolés dans l’air (AIS); ou
– montage sur des disjoncteurs à isolation gazeuse (GIS).
Les essais pour chacune des applications ci-dessus sont, dans certains cas, différents.
Le présent document ne s’applique pas aux condensateurs installés en parallèle aux chambres du disjoncteur, qui sont spécifiés dans l’IEC 62146-1.
Le présent document ne s’applique pas aux condensateurs qui ne sont pas directement associés aux disjoncteurs à courant alternatif haute tension.
Le présent document a pour objet de:
– définir des règles uniformes concernant les performances, les essais et les caractéristiques assignées;
– définir des règles de sécurité spécifiques;
– fournir des recommandations pour l’installation et le fonctionnement.
Le condensateur TTR est un sous-composant du disjoncteur et il est spécifié conformément aux spécifications des disjoncteurs de l’IEC 62271-1, de l’IEC 62271-100 et, le cas échéant, de l’IEC 62271-203.
Les condensateurs TTR sont généralement construits avec des boîtiers composites ou céramiques (isolateurs). Ces isolateurs sont conformes à l’IEC 61462 ou l’IEC 62155. D’autres boîtiers peuvent être utilisés s’ils peuvent supporter les essais de type applicables conformément à l’IEC 61462 et à l’IEC 62155.
This International Standard is to be used in conjunction with IEC 62146-1:2013 and IEC 62146-1:2013/AMD1:2016.

Kondenzatorji za visokonapetostne odklopnike za izmenični tok - 2. del: Kondenzatorji TRV (IEC 62146-2:2023)

IEC 62146-2:2023 se uporablja za kondenzatorje TRV, ki se uporabljajo na visokonapetostnih odklopnikih izmeničnega toka z nazivnimi napetostmi nad 100 kV pri 50 Hz ali 60 Hz.
Kondenzatorji TRV so nameščeni dozemno, bodisi vzporedno s skoznjikom na odklopnikih z ozemljeno komoro, bodisi potopno znotraj odklopnika ali prosto stoječe blizu odklopnika. Njihova funkcija je omejevanje prehodne povratne napetosti (TRV) in stopnje hitrosti naraščanja povratne napetosti (RRRV) na odklopniku. Kot kondenzator TRV se lahko uporabljajo kondenzatorji, ki so skladni s tem dokumentom.
Ta dokument se uporablja za kondenzatorje TRV, ki spadajo v eno ali v obe kategoriji za:
– montaža na z zrakom izolirane stikalne naprave (AIS) odklopnik z ozemljeno komoro ali odklopnikov s komoro pod napetostjo ali v njihovo bližino, ali
– namestitev na s plinom izolirane stikalne naprave (GIS) odklopnikov.
Preskušanje za vsako zgoraj navedeno uporabo se v nekaterih primerih razlikuje.
Ta dokument se ne uporablja za razvrstitvene kondenzatorje, nameščene vzporedno s komorami odklopnika, ki so določeni v IEC 62146-1.
Ta dokument se ne uporablja za kondenzatorje, ki niso neposredno povezani z visokonapetostnimi odklopniki izmeničnega toka.
Cilj tega dokumenta je:
– določitev enotnih pravil glede zmogljivosti, preskušanja in ocenjevanja;
– določitev posebnih varnostnih pravil;
– zagotovitev navodil za namestitev in delovanje.
Kondenzator TRV je sestavni del odklopnika in je določen v skladu s specifikacijami odklopnika v skladu s standardi IEC 62271-1, IEC 62271-100 in po potrebi IEC 62271-203.
Kondenzatorji TRV so običajno izdelani iz kompozitnih ali keramičnih ohišij (izolatorjev). Ti izolatorji so v skladu s standardom IEC 61462 ali IEC 62155. Uporabljajo se lahko tudi druga ohišja, če vzdržijo ustrezne tipske preskuse v skladu s standardoma IEC 61462 in IEC 62155.
Ta mednarodni standard je namenjen uporabi v povezavi s standardoma IEC 62146-1:2013 in IEC 62146-1:2013/AMD1:2016.

General Information

• Status: Published
• Public Enquiry End Date: 30-Jun-2022
• Publication Date: 01-Mar-2023
• ICS: 31.060 - Capacitors
• ICS: 31.060.70 - Power capacitors
• Technical Committee: I09 - Imaginarni 09
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 21-Feb-2023
• Due Date: 28-Apr-2023
• Completion Date: 02-Mar-2023
• Ref Project: EN IEC 62146-2:2023 - Capacitors for high‑voltage alternating current circuit‑breakers - Part 2: TRV capacitors

Overview

EN IEC 62146-2:2023 (IEC 62146-2:2023) defines requirements for TRV capacitors used with high‑voltage alternating‑current circuit‑breakers (rated voltages above 100 kV, 50 Hz or 60 Hz). TRV capacitors are installed phase‑to‑earth - mounted on dead‑tank or live‑tank breakers, immersed inside breakers, or freestanding nearby - to limit the transient recovery voltage (TRV) and control the rate of rise of recovery voltage (RRRV) during interruption. The standard establishes uniform rules for performance, testing, rating, safety, installation and operation of TRV capacitors intended for AIS and GIS applications.

Key topics and technical requirements

• Scope & applicability
  • Covers TRV capacitors directly associated with high‑voltage AC circuit‑breakers (>100 kV, 50/60 Hz).
  • Applies to capacitors mounted on/near AIS dead or live tank breakers, immersed in breakers, or mounted on GIS breakers.
  • Excludes grading capacitors (see IEC 62146-1) and capacitors not directly associated with circuit‑breakers.
• Ratings and service conditions
  • Defines rated voltage, insulation levels and rated frequency relevant to TRV performance.
• Design and construction
  • Requirements for capacitance tolerances, dielectric loss, partial discharge limits, mechanical strength, mounting angle and corrosion protection.
  • Typical housing technologies: composite or ceramic insulators complying with IEC 61462 or IEC 62155 (other housings permitted if type‑test requirements are met).
• Type and routine tests
  • Electrical type tests (switching impulse, lightning/chopped impulse, temperature extremes), RIV, short‑circuit discharge, resonance measurements, tightness, vibration and mechanical bending tests.
  • Routine tests for capacitance, loss angle, partial discharge and leak tightness.
• Safety, installation and maintenance
  • Specific safety rules for manufacturers and users, plus guidance for transport, storage, erection, operation and maintenance.
• Environmental aspects
  • Considers environmental factors relevant to long‑term capacitor performance.

Applications and practical value

• Ensures TRV capacitors reliably limit TRV and RRRV, protecting circuit‑breakers and improving system switching performance.
• Used by manufacturers of TRV capacitors, circuit‑breaker OEMs, switchgear designers, utilities, testing and certification laboratories, and procurement/specification engineers.
• Helps specify components for AIS and GIS installations, enabling consistent testing, rating and interchangeability in HV switchgear projects.

Related standards

• IEC/EN 62146-1 (Grading capacitors - general)
• IEC 62271-1, IEC 62271-100, IEC 62271-203 (high‑voltage switchgear and circuit‑breaker specs)
• IEC 61462, IEC 62155 (insulator requirements)
• IEC 60060-1, IEC 60358-1 (high‑voltage test techniques and coupling capacitors)

Keywords: EN IEC 62146-2:2023, TRV capacitors, transient recovery voltage, RRRV, high‑voltage circuit‑breakers, GIS, AIS, type tests, capacitor standards.

Standards Content (Sample)

SLOVENSKI STANDARD
01-april-2023
Kondenzatorji za visokonapetostne odklopnike za izmenični tok - 2. del:
Kondenzatorji TRV (IEC 62146-2:2023)
Capacitors for high‑voltage alternating current circuit‑breakers - Part 2: TRV capacitors
(IEC 62146-2:2023)
Spannungsausgleichskondensatoren für Hochspannungs-Wechselstrom-
Leistungsschalter - Teil 2: TRV-Kondensatoren (IEC 62146-2:2023)
Condensateurs pour disjoncteurs à courant alternatif haute tension - Partie 2:
Condensateurs TTR (IEC 62146-2:2023)
Ta slovenski standard je istoveten z: EN IEC 62146-2:2023
ICS:
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 62146-2

NORME EUROPÉENNE
EUROPÄISCHE NORM February 2023
ICS 31.060; 31.060.70
English Version
Capacitors for high-voltage alternating current circuit-breakers -
Part 2: TRV capacitors
(IEC 62146-2:2023)
Condensateurs pour disjoncteurs à courant alternatif haute Spannungsausgleichskondensatoren für Hochspannungs-
tension - Partie 2: Condensateurs TTR Wechselstrom-Leistungsschalter - Teil 2: TRV-
(IEC 62146-2:2023) Kondensatoren
(IEC 62146-2:2023)
This European Standard was approved by CENELEC on 2023-02-14. 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, 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
© 2023 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 62146-2:2023 E

European foreword
The text of document 33/685/FDIS, future edition 1 of IEC 62146-2, prepared by IEC/TC 33 "Power
capacitors and their applications" was submitted to the IEC-CENELEC parallel vote and approved by
CENELEC as EN IEC 62146-2:2023.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2023-11-14
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2026-02-14
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 shall not be held responsible for identifying any or all such patent rights.
This document is read in conjunction with EN 62146-1:2014 and EN 62146-1:2014/A1:2016.
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 62146-2:2023 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.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60060-1 2010 High-voltage test techniques - Part 1: EN 60060-1 2010
General definitions and test requirements
IEC 60358-1 2012 Coupling capacitors and capacitor dividers EN 60358-1 2012
- Part 1: General rules
IEC 60815 series Selection and dimensioning of high-voltage - -
insulators intended for use in polluted
conditions
IEC 60871-1 2014 Shunt capacitors for a.c. power systems EN 60871-1 2014
having a rated voltage above 1 000 V -
Part 1: General
IEC 61462 2007 Composite hollow insulators - Pressurized EN 61462 2007
and unpressurized insulators for use in
electrical equipment with rated voltage
greater than 1 000 V - Definitions, test
methods, acceptance criteria and design
recommendations
IEC 62146-1 2013 Grading capacitors for high-voltage EN 62146-1 2014
alternating current circuit-breakers - Part 1:
General
+ A1 2016  A1 2016
IEC 62155 2003 Hollow pressurized and unpressurized EN 62155 2003
ceramic and glass insulators for use in
electrical equipment with rated voltages
greater than 1 000 V
IEC 62271-1 2017 High-voltage switchgear and controlgear - EN 62271-1 2017
Part 1: Common specifications for
alternating current switchgear and
controlgear
+ A1 2021  A1 2021
IEC 62271-100 2021 High-voltage switchgear and controlgear - EN IEC 62271-100 2021
Part 100: Alternating-current circuit-
breakers
IEC 62271-203 - High-voltage switchgear and controlgear - EN IEC 62271-203 -
Part 203: AC gas-insulated metal-enclosed
switchgear for rated voltages above 52 kV
IEC Guide 109 - Environmental aspects - Inclusion in - -
electrotechnical product standards

IEC 62146-2 ®
Edition 1.0 2023-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Capacitors for high‑voltage alternating current circuit‑breakers –

Part 2: TRV capacitors
Condensateurs pour disjoncteurs à courant alternatif haute tension –

Partie 2: Condensateurs TTR
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 31.060; 31.060.70 ISBN 978-2-8322-6353-2

– 2 – IEC 62146-2:2023 © IEC 2023
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Abbreviated terms . 8
5 Service conditions . 8
6 Ratings . 9
6.1 Rated voltage (U ) . 9
cr
6.2 Rated insulation level . 9
6.3 Rated frequency (f ) . 11
r
7 Design and construction . 11
7.1 Capacitance tolerances . 11
7.2 Capacitor loss requirements . 11
7.3 Partial discharge level . 11
7.4 Angle of mounting . 11
7.5 Minimum withstand value of mechanical bending load . 11
7.5.1 Capacitors mounted on air insulated circuit-breaker . 11
7.5.2 Immersed capacitors . 12
7.5.3 Freestanding capacitors . 12
7.6 Requirements for impregnation medium in capacitor . 12
7.7 Protection against corrosion . 12
7.8 Marking of the equipment . 12
7.9 Creepage distances for outdoor insulators . 13
7.10 Tightness . 13
8 Type tests . 13
8.1 Information for identification of specimens . 13
8.2 Information to be included in type-test reports . 13
8.3 Test conditions . 13
8.4 Electrical type tests . 13
8.4.1 General . 13
8.4.2 Switching impulse voltage test . 14
8.4.3 Lightning and chopped impulse voltage test . 14
8.5 Voltage test at low and high temperature . 15
8.5.1 Test procedure . 15
8.5.2 Capacitor reduced-scale model design . 15
8.6 Radio Interference Voltage (RIV) test . 15
8.7 Short-circuit discharge test . 16
8.8 Resonance frequency measurements. 16
8.9 Mechanical bending test . 16
8.10 Tightness test at different temperatures . 16
8.11 Tightness test to check gas ingress from pressurized environment . 16
8.12 Vibration test . 16
9 Routine tests . 17
9.1 General . 17
9.2 Test conditions . 17
9.3 Capacitance and loss angle measurements at power frequency . 17

IEC 62146-2:2023 © IEC 2023 – 3 –
9.4 Power frequency voltage test . 17
9.5 Partial discharge test . 18
9.6 Tightness test . 18
9.6.1 General . 18
9.6.2 Oil impregnated capacitor . 18
9.6.3 Tightness test for gas filled capacitors . 18
9.7 Visual inspection and dimensional check . 18
10 Recommendations for transport, storage, erection, operation, and maintenance . 19
11 Safety . 19
11.1 General . 19
11.2 Precautions by manufacturers . 19
11.3 Precautions by users . 19
11.4 National regulations . 19
12 Environmental aspects . 20

Figure 1 – Electrical type tests sequence . 14
Figure 2 – Reduced scale model capacitor element geometry . 15
Figure 3 – Electrical routine test sequence . 17

Table 1 – Standard insulation levels – Range I (U < 300 kV). 9
r
Table 2 – Standard insulation levels – Range II (U ≥ 300 kV) . 10
r
Table 3 – Partial discharge test voltages and permissible levels . 11

– 4 – IEC 62146-2:2023 © IEC 2023
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
CAPACITORS FOR HIGH‑VOLTAGE ALTERNATING
CURRENT CIRCUIT‑BREAKERS –
Part 2: TRV capacitors
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) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
IEC 62146-2 has been prepared by IEC technical committee 33: Power capacitors and their
applications. It is an International Standard.
The text of this International Standard is based on the following documents:
Draft Report on voting
33/685/FDIS 33/686/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.

IEC 62146-2:2023 © IEC 2023 – 5 –
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
This International Standard is to be used in conjunction with IEC 62146-1:2013 and
IEC 62146-1:2013/AMD1:2016.
A list of all parts in the IEC 62146 series, published under the general title Capacitors for
high-voltage alternating current circuit-breakers, can be found on the IEC website. The title of
the series was changed in 2022 by decision of TC 33, and the title of IEC 62146-1 will be
modified accordingly in its next edition.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
– 6 – IEC 62146-2:2023 © IEC 2023
CAPACITORS FOR HIGH‑VOLTAGE ALTERNATING
CURRENT CIRCUIT‑BREAKERS –
Part 2: TRV capacitors
1 Scope
This part of IEC 62146 is applicable to TRV capacitors used on high-voltage alternating current
circuit-breakers with rated voltages above 100 kV with 50 Hz or 60 Hz.
TRV capacitors are installed phase to earth, either in parallel to the bushing on dead tank
circuit-breakers, or immersed inside the circuit-breaker, or freestanding close to the circuit-
breaker. Their function is to limit the transient recovery voltage (TRV) and the rate of rise of
recovery voltage (RRRV) on the circuit-breaker. Capacitors in compliance with this document
can be used as TRV capacitor.
This document applies to TRV capacitors falling into one or both of the following categories for:
– mounting on or close to air insulated switchgear (AIS) dead tank and live tank circuit-
breakers, or
– mounting on gas insulated switchgear (GIS) circuit-breakers.
The testing for each of the above applications is in some cases different.
This document does not apply to grading capacitors installed in parallel to the chambers of the
circuit-breaker, which are specified in IEC 62146-1.
This document does not apply to capacitors not directly associated with high-voltage alternating
current circuit-breakers.
The object of this document is:
– to define uniform rules regarding performances, testing and rating
– to define specific safety rules
– to provide a guidance for installation and operation
The TRV capacitor is a sub-component for the circuit-breaker and is specified in accordance
with the circuit-breaker specifications according to IEC 62271-1, IEC 62271-100, and if
applicable to IEC 62271-203.
TRV capacitors are commonly built with composite or ceramic housings (insulators). Those
insulators follow IEC 61462 or IEC 62155. Other housings can be used if they can sustain
applicable type tests according to IEC 61462 and IEC 62155.
2 Normative references
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.
IEC 60060-1:2010, High-voltage test techniques – Part 1: General definitions and test
requirements
IEC 62146-2:2023 © IEC 2023 – 7 –
IEC 60358-1:2012, Coupling capacitors and capacitor dividers – Part 1: General rules
IEC 60815 (all parts), Selection and dimensioning of high-voltage insulators intended for use in
polluted conditions
IEC 60871-1:2014, Shunt capacitors for a.c. power systems having a rated voltage above
1 000 V – Part 1: General
IEC 61462:2007, Composite hollow insulators – Pressurized and unpressurized insulators for
use in electrical equipment with rated voltage greater than 1 000 V – Definitions, test methods,
acceptance criteria and design recommendations
IEC 62146-1:2013, Grading capacitors for high-voltage alternating current circuit-breakers –
Part 1: General
IEC 62146-1:2013/AMD1:2016
IEC 62155:2003, Hollow pressurized and unpressurized ceramic and glass insulators for use in
electrical equipment with rated voltages greater than 1 000 V
IEC 62271-1:2017, High-voltage switchgear and controlgear – Part 1: Common specifications
for alternating current switchgear and controlgear
IEC 62271-1:2017/AMD1:2021
IEC 62271-100:2021, High-voltage switchgear and controlgear – Part 100: Alternating-current
circuit-breakers
IEC 62271-203, High-voltage switchgear and controlgear – Part 203: AC gas-insulated metal-
enclosed switchgear for rated voltages above 52 kV
IEC GUIDE 109, Environmental aspects – Inclusion in electrotechnical product standards
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 62146-1:2013
...