IEC 62271-214:2024
(Main)High-voltage switchgear and controlgear - Part 214: Internal arc classification for AC metal-enclosed pole-mounted switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV
High-voltage switchgear and controlgear - Part 214: Internal arc classification for AC metal-enclosed pole-mounted switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV
IEC 62271-214:2024 specifies requirements for internal arc classification of AC metal-enclosed pole-mounted switchgear and controlgear with rated voltages above 1 kV and up to and including 52 kV with service frequencies up to and including 60 Hz. This document is applicable to three-phase, two-phase and single-phase open terminal equipment for which an internal arc classification is assigned. Enclosures may include fixed and removable components and may be filled with fluid (liquid or gas) to provide insulation. This second edition cancels and replaces the first edition published in 2019. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) indicators positioning update;
b) neutral earthing connection of the test circuit for three-phase tests;
c) general review for consistency with IEC 62271-200, Ed.3.0:2021.
Appareillage à haute tension - Partie 214 : Classification arc interne des appareillages sous enveloppe métallique à courant alternatif de tensions assignées supérieures à 1 kV et inférieures ou égales à 52 kV montées sur poteau
L'IEC 62271-214:2024 spécifie les exigences relatives à la classification arc interne des appareillages sous enveloppe métallique à courant alternatif montés sur poteau, de tensions assignées supérieures à 1 kV et inférieures ou égales à 52 kV, et de fréquences de service inférieures ou égales à 60 Hz. Le présent document s'applique aux équipements à bornes ouvertes triphasés, biphasés et monophasés auxquels une classification arc interne est attribuée. Les enveloppes peuvent comprendre des composants fixes et amovibles et peuvent être remplies de fluide (liquide ou gaz) pour l'isolation. Cette deuxième édition annule et remplace la première édition parue en 2019. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) mise à jour du positionnement des indicateurs;
b) connexion de mise à la terre du neutre du circuit d'essai pour les essais triphasés;
c) révision générale à des fins de cohérence avec l'IEC 62271-200 Éd.3.0:2021.
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IEC 62271-214 ®
Edition 2.0 2024-04
COMMENTED VERSION
INTERNATIONAL
STANDARD
colour
inside
High-voltage switchgear and controlgear –
Part 214: Internal arc classification for AC metal-enclosed pole-mounted
switchgear and controlgear for rated voltages above 1 kV and up to and
including 52 kV
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
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copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
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About the IEC
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International Standards for all electrical, electronic and related technologies.
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IEC 62271-214 ®
Edition 2.0 2024-04
COMMENTED VERSION
INTERNATIONAL
STANDARD
colour
inside
High-voltage switchgear and controlgear –
Part 214: Internal arc classification for AC metal-enclosed pole-mounted
switchgear and controlgear for rated voltages above 1 kV and up to and
including 52 kV
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.130.10 ISBN 978-2-8322-8792-7
– 2 – IEC 62271-214:2024 CMV © IEC 2024
CONTENTS
FOREWORD .4
INTRODUCTION .6
1 Scope .7
2 Normative references .7
3 Terms and definitions .8
3.1 General terms and definitions .8
3.8 Index of definitions . 10
4 Normal and special service conditions . 11
5 Ratings . 11
5.1 General . 11
5.2 Rated voltage (U ) . 11
r
5.2.1 General . 11
5.3 Rated insulation level (U , U , U ) . 12
d p s
5.4 Rated frequency (f ) . 12
r
5.101 Ratings of the internal arc classification (IAC). 12
5.101.1 General . 12
5.101.2 Rated approach distance (D ) . 12
AP
5.101.3 Rated arc fault currents (I , I ) . 12
A Ae
5.101.4 Rated arc fault duration (t , t ) . 12
A Ae
6 Design and construction . 13
6.11 Nameplate . 13
6.11.2 Application . 13
6.101 Internal arc fault . 13
6.102 Enclosure . 14
7 Type tests . 15
7.1 General . 15
7.1.1 Basics . 15
7.1.2 Information for identification of test object . 16
7.1.3 Information to be included in type-test reports . 16
7.101 Internal arc type test . 17
7.101.1 General . 17
7.101.2 Test conditions . 17
7.101.3 Arrangement of the equipment . 18
7.101.4 Indicators (for assessing the thermal effects of the gases) . 21
7.101.5 Arrangement of indicators . 21
7.101.6 Test parameters . 22
7.101.7 Test procedure . 23
7.101.8 Criteria to pass the test. 29
7.101.9 Transferability of the test results . 30
8 Routine tests . 30
9 Guide to the selection of switchgear and controlgear (informative) . 30
9.1 General . 30
9.101 Internal arc fault . 30
9.101.1 General . 30
9.101.2 Causes and preventive measures . 31
9.101.3 Supplementary protective measures . 32
9.101.4 Considerations for the selection and installation . 32
9.101.5 Internal arc test . 32
9.101.6 IAC designation . 33
10 Information to be given with enquiries, tenders and orders (informative) . 33
10.1 General . 33
11 Transport, storage, installation, operation instruction and maintenance . 34
11.1 General . 34
11.2 Conditions during transport, storage and installation . 34
11.3 Installation . 34
11.3.1 General . 34
11.101 Maintenance . 34
12 Safety . 34
12.1 General . 34
13 Influence of the product on the environment . 34
Annex A (normative) Identification of the test objects . 36
A.1 General . 36
A.2 Data . 36
A.3 Drawings . 36
Bibliography . 37
List of comments . 39
Figure 1 – Examples of enclosures and compartment(s) in different arrangements . 15
Figure 2 – Test arrangement for pole-mounted switchgear and controlgear . 20
Figure 3 – Horizontal indicator . 21
Figure 4 – Flow-chart for the choice of arc initiation depending on the construction . 27
Table 1 – Nameplate information . 13
Table 2 – Parameters for internal arc fault test according to enclosure and
compartment construction . 25
Table 3 – Locations, causes and examples of measures to decrease the probability of
internal arc faults . 31
Table 4 – Single-phase-to-earth arc fault current depending on the network neutral
earthing . 33
– 4 – IEC 62271-214:2024 CMV © IEC 2024
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR –
Part 214: Internal arc classification for AC metal-enclosed
pole-mounted switchgear and controlgear for rated voltages
above 1 kV and up to and including 52 kV
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
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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
transparen
...
IEC 62271-214 ®
Edition 2.0 2024-04
EXTENDED VERSION
INTERNATIONAL
STANDARD
colour
inside
This extended version of IEC 62271-214:2024 includes the content of the references made to
IEC 62271-1:2017+AMD1:2021 CSV
High-voltage switchgear and controlgear –
Part 214: Internal arc classification for AC metal-enclosed pole-mounted
switchgear and controlgear for rated voltages above 1 kV and up to and
including 52 kV
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.
IEC Secretariat Tel.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.
About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.
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further assistance, please contact the Customer Service
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IEC 62271-214 ®
Edition 2.0 2024-04
EXTENDED VERSION
INTERNATIONAL
STANDARD
colour
inside
This extended version of IEC 62271-214:2024 includes the content of the references made to
IEC 62271-1:2017+AMD1:2021 CSV
High-voltage switchgear and controlgear –
Part 214: Internal arc classification for AC metal-enclosed pole-mounted
switchgear and controlgear for rated voltages above 1 kV and up to and
including 52 kV
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.130.10 ISBN 978-2-8322-8793-4
– 2 – IEC 62271-214:2024 EXV © IEC 2024
CONTENTS
FOREWORD . 6
INTRODUCTION . 8
INTRODUCTION to IEC 62271-214:2024 . 8
1 Scope . 9
2 Normative references . 9
3 Terms and definitions . 12
3.1 General terms and definitions . 12
3.2 Assemblies of switchgear and controlgear . 17
3.3 Parts of assemblies . 17
3.4 Switching devices . 18
3.5 Parts of switchgear and controlgear . 18
3.6 Operational characteristics of switchgear and controlgear . 21
3.6.5 Terms and definitions relative to pressure (or density) . 22
3.6.6 Terms and definitions relating to gas and vacuum tightness . 23
3.6.7 Terms and definitions relating to liquid tightness. 24
3.7 Characteristic quantities . 25
3.8 Index of definitions . 26
4 Normal and special service conditions . 28
5 Ratings . 28
5.1 General . 28
5.2 Rated voltage (U ) . 28
r
5.2.1 General . 28
5.2.2 Range I for rated voltages of 245 kV and below . 29
5.2.3 Range II for rated voltages above 245 kV . 29
5.3 Rated insulation level (U , U , U ) . 29
d p s
5.4 Rated frequency (f ) . 29
r
5.5 Rated continuous current (I ) . 29
r
5.6 Rated short-time withstand current (I ) . 29
k
5.7 Rated peak withstand current (I ) . 29
p
5.8 Rated duration of short-circuit (t ) . 29
k
5.9 Rated supply voltage of auxiliary and control circuits (U ) . 29
a
5.10 Rated supply frequency of auxiliary and control circuits . 29
5.11 Rated pressure of compressed gas supply for controlled pressure systems . 29
5.101 Ratings of the internal arc classification (IAC) . 30
5.101.1 General . 30
5.101.2 Rated approach distance (D ) . 30
AP
5.101.3 Rated arc fault currents (I , I ) . 30
A Ae
5.101.4 Rated arc fault duration (t , t ) . 30
A Ae
6 Design and construction . 30
6.1 Requirements for liquids in switchgear and controlgear . 30
6.2 Requirements for gases in switchgear and controlgear . 30
6.3 Earthing of switchgear and controlgear . 30
6.4 Auxiliary and control equipment and circuits . 31
6.5 Dependent power operation . 31
6.6 Stored energy operation . 31
6.7 Independent unlatched operation (independent manual or power operation) . 31
6.8 Manually operated actuators . 31
6.9 Operation of releases . 31
6.10 Pressure/level indication . 31
6.11 Nameplates. 31
6.11.1 General . 31
6.11.2 Application . 31
6.12 Locking devices . 32
6.13 Position indication . 32
6.14 Degrees of protection provided by enclosures . 32
6.15 Creepage distances for outdoor insulators . 32
6.16 Gas and vacuum tightness . 32
6.17 Tightness for liquid systems . 32
6.18 Fire hazard (flammability) . 33
6.19 Electromagnetic compatibility (EMC) . 33
6.20 X-ray emission . 33
6.21 Corrosion . 33
6.22 Filling levels for insulation, switching and/or operation . 33
6.101 Internal arc fault . 33
6.102 Enclosure . 33
7 Type tests . 34
7.1 General . 34
7.1.1 Basics . 34
7.1.2 Information for identification of test objects . 35
7.1.3 Information to be included in type-test reports . 35
7.2 Dielectric tests . 36
7.3 Radio interference voltage (RIV) test . 37
7.4 Resistance measurement . 37
7.5 Continuous current tests . 37
7.6 Short-time withstand current and peak withstand current tests . 37
7.7 Verification of the protection . 37
7.8 Tightness tests . 37
7.9 Electromagnetic compatibility tests (EMC) . 37
7.10 Additional tests on auxiliary and control circuits . 37
7.11 X-radiation test for vacuum interrupters . 37
7.101 Internal arc type test . 37
7.101.1 General . 37
7.101.2 Test conditions . 37
7.101.3 Arrangement of the equipment . 38
7.101.4 Indicators (for assessing the thermal effects of the gases) . 40
7.101.5 Arrangement of indicators . 40
7.101.6 Test parameters . 41
7.101.7 Test procedure . 42
7.101.8 Criteria to pass the test . 47
7.101.9 Transferability of the test results . 48
8 Routine tests . 48
9 Guide to the selection of switchgear and controlgear (informative) . 48
9.1 General . 48
9.2 Selection of rated values .
...
IEC 62271-214 ®
Edition 2.0 2024-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
High-voltage switchgear and controlgear –
Part 214: Internal arc classification for AC metal-enclosed pole-mounted
switchgear and controlgear for rated voltages above 1 kV and up to and
including 52 kV
Appareillage à haute tension –
Partie 214 : Classification arc interne des appareillages sous enveloppe
métallique à courant alternatif de tensions assignées supérieures à 1 kV et
inférieures ou égales à 52 kV montées sur poteau
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
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copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
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CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.
About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.
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and withdrawn publications. content tailored to your needs.
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containing more than 22 500 terminological entries in English
a month by email.
and French, with equivalent terms in 25 additional languages.
Also known as the International Electrotechnical Vocabulary
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IEC 62271-214 ®
Edition 2.0 2024-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
High-voltage switchgear and controlgear –
Part 214: Internal arc classification for AC metal-enclosed pole-mounted
switchgear and controlgear for rated voltages above 1 kV and up to and
including 52 kV
Appareillage à haute tension –
Partie 214 : Classification arc interne des appareillages sous enveloppe
métallique à courant alternatif de tensions assignées supérieures à 1 kV et
inférieures ou égales à 52 kV montées sur poteau
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.130.10 ISBN 978-2-8322-8431-5
– 2 – IEC 62271-214:2024 © IEC 2024
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
3.1 General terms and definitions . 8
3.8 Index of definitions . 10
4 Normal and special service conditions . 11
5 Ratings . 11
5.1 General . 11
5.2 Rated voltage (U ) . 11
r
5.2.1 General . 11
5.3 Rated insulation level (U , U , U ) . 11
d p s
5.4 Rated frequency (f ) . 12
r
5.101 Ratings of the internal arc classification (IAC) . 12
5.101.1 General . 12
5.101.2 Rated approach distance (D ) . 12
AP
5.101.3 Rated arc fault currents (I , I ) . 12
A Ae
5.101.4 Rated arc fault duration (t , t ) . 12
A Ae
6 Design and construction . 12
6.11 Nameplate . 12
6.11.2 Application . 12
6.101 Internal arc fault . 13
6.102 Enclosure . 13
7 Type tests . 14
7.1 General . 14
7.1.1 Basics . 14
7.1.2 Information for identification of test object . 15
7.1.3 Information to be included in type-test reports . 15
7.101 Internal arc type test . 16
7.101.1 General . 16
7.101.2 Test conditions . 16
7.101.3 Arrangement of the equipment . 17
7.101.4 Indicators (for assessing the thermal effects of the gases) . 19
7.101.5 Arrangement of indicators . 19
7.101.6 Test parameters . 20
7.101.7 Test procedure . 21
7.101.8 Criteria to pass the test . 26
7.101.9 Transferability of the test results . 26
8 Routine tests . 27
9 Guide to the selection of switchgear and controlgear (informative) . 27
9.1 General . 27
9.101 Internal arc fault . 27
9.101.1 General . 27
9.101.2 Causes and preventive measures . 28
9.101.3 Supplementary protective measures . 28
9.101.4 Considerations for the selection and installation . 29
9.101.5 Internal arc test . 29
9.101.6 IAC designation . 29
10 Information to be given with enquiries, tenders and orders (informative) . 30
10.1 General . 30
11 Transport, storage, installation, operation instruction and maintenance . 30
11.1 General . 30
11.2 Conditions during transport, storage and installation . 31
11.3 Installation . 31
11.3.1 General . 31
11.101 Maintenance . 31
12 Safety . 31
12.1 General . 31
13 Influence of the product on the environment . 31
Annex A (normative) Identification of the test objects . 32
A.1 General . 32
A.2 Data . 32
A.3 Drawings. 32
Bibliography . 33
Figure 1 – Examples of enclosures and compartment(s) in different arrangements . 14
Figure 2 – Test arrangement for pole-mounted switchgear and controlgear . 18
Figure 3 – Horizontal indicator . 19
Figure 4 – Flow-chart for the choice of arc initiation
...
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