IEC 62271-212:2022

High-voltage switchgear and controlgear - Part 212: Compact Equipment Assembly for Distribution Substation (CEADS) for AC voltages up to 52 kV

IEC 62271-212:2022 is available as IEC 62271-212:2022 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 62271-212;2022 specifies the service conditions, rated characteristics, general structural requirements and test methods of the assemblies of the main electrical functional units of a high-voltage transformer substation, duly interconnected, for AC voltages up to and including 52 kV on the high-voltage side and service frequency 50 Hz or 60 Hz. The CEADS is cable‑connected to the high-voltage network for indoor and outdoor applications of restricted access. This second edition cancels and replaces the first edition published in 2016. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- clause numbering aligned with IEC 62271-1:2017,
- rewording of title and scope of the document,
- implement changes on internal arc definition and testing following the evolution of prefabricated substation concept according to IEC 62271-202,
- general review of main test procedures such as temperature rise or dielectric test on interconnections, considering control equipment, communication, smart grid devices and integration of components,
- general review of installation, operation, safety and maintenance requirements.

Appareillage à haute tension - Partie 212: Ensemble compact d’équipement pour poste de distribution (ECEPD) pour les tensions alternatives inférieures ou égales à 52 kV

IEC 62271-212:2022 est disponible sous forme de IEC 62271-212:2022 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.
L'IEC 62271-212:2022 spécifie les conditions de service, les caractéristiques assignées, les exigences structurelles générales et les méthodes d'essai des ensembles des principales unités fonctionnelles électriques d'un poste de transformation haute tension, dûment interconnecté, pour les tensions alternatives inférieures ou égales à 52 kV du côté haute tension, et avec une fréquence de service de 50 Hz ou 60 Hz. L’ECEPD est raccordé par câble au réseau à haute tension pour des applications à l’intérieur et à l’extérieur à accès restreint. Cette deuxième édition annule et remplace la première édition parue en 2016. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- numérotation des articles alignée sur l’IEC 62271-1:2017;
- reformulation du titre et du domaine d'application du document;
- mise en œuvre des modifications relatives à la définition et aux essais d'arc interne en suivant l'évolution du concept de poste préfabriqué conformément à l’IEC 62271-202;
- examen général des principaux modes opératoires d'essai tels que l'échauffement ou l’essai diélectrique sur les interconnexions, compte tenu des équipements de commande, de la communication, des dispositifs de réseau intelligent et de l'intégration des composants;
- examen général des exigences d’installation, de fonctionnement, de sécurité et de maintenance.

General Information

• Status: Published
• Publication Date: 28-Jun-2022
• ICS: 29.130.10 - High voltage switchgear and controlgear
• Technical Committee: SC 17C - Assemblies
• Drafting Committee: MT 40 - TC 17/SC 17C/MT 40
• Current Stage: PPUB - Publication issued
• Start Date: 08-Jul-2022
• Completion Date: 29-Jun-2022

Relations

• Revises: IEC 62271-212:2016 - High-voltage switchgear and controlgear - Part 212: Compact Equipment Assembly for Distribution Substation (CEADS)
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 62271-212 ®
Edition 2.0 2022-06
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
High-voltage switchgear and controlgear –
Part 212: Compact Equipment Assembly for Distribution Substation (CEADS) for
AC voltages up to 52 kV
IEC ICS 29.130.10:2022-06 RLV(en)

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.: [phone]
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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.

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(IEV) online.
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If you wish to give us your feedback on this publication or
need further assistance, please contact the Customer Service
Centre: [e-mail].
IEC 62271-212 ®
Edition 2.0 2022-06
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
High-voltage switchgear and controlgear –
Part 212: Compact Equipment Assembly for Distribution Substation (CEADS) for
AC voltages up to 52 kV
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.130.10 ISBN 978-2-8322-3962-9
– 2 – IEC 62271-212:2022 RLV © IEC 2022
CONTENTS
FOREWORD . 7
INTRODUCTION . 10
1 General .
1 Scope . 11
2 Normative references . 12
3 Terms and definitions . 13
3.1 General terms and definitions . 14
3.2 Assemblies of switchgear and controlgear . 14
3.3 Parts of assemblies . 14
3.4 Switching devices . 15
3.5 Parts of switchgear and controlgear . 15
3.6 Operational characteristics of switchgear and controlgear . 15
3.7 Characteristic quantities . 15
3.8 Index of definitions . 15
4 Normal and special service conditions . 16
4.1 Normal service conditions . 16
4.2 Special service conditions . 17
5 Ratings . 18
5.1 General . 18
5.2 Rated voltage . 18
5.3 Rated insulation level . 19
5.4 Rated frequency (f ) . 19
r
5.5 Rated normal continuous current (I ,I ) . 19
r nA
4.4.2 Temperature rise .
5.6 Rated short-time withstand current (I , I , I ) . 20
k ke cw
5.7 Rated peak withstand current (I , I , I ) . 20
p pe pk
5.8 Rated duration of short circuit (t , t , t ) . 21
k ke cw
4.8 Rated supply voltage of closing and opening devices and of auxiliary and
control circuits .
4.9 Rated supply frequency of closing and opening devices and of auxiliary
circuits .
5.9 Rated supply voltage of auxiliary and control circuits (U ) . 22
a
5.10 Rated supply frequency of auxiliary and control circuits . 22
5.11 Rated pressure of compressed gas supply for controlled pressure systems . 22
5.101 Rated power and total losses of CEADS . 22
5.102 Ratings of the internal arc classification (IAC) . 22
6 Design and construction . 23
6.1 Requirements for liquids in switchgear and controlgear . 24
6.2 Requirements for gases in switchgear and controlgear . 24
6.3 Earthing of switchgear and controlgear . 24
6.4 Auxiliary and control equipment and circuits . 25
6.5 Dependent power operation . 25
6.6 Stored energy operation . 25
6.7 Independent unlatched operation (independent manual or power operation
(independent unlatched operation) . 25

6.8 Manually operated actuators . 25
6.9 Operation of releases . 25
6.10 Low- and high-pressure interlocking and monitoring devices Pressure/level
indication . 26
6.11 Nameplates. 26
6.12 Interlocking Locking devices . 26
6.13 Position indication . 26
6.14 Degrees of protection provided by enclosures . 26
6.15 Creepage distances for outdoor insulators . 27
6.16 Gas and vacuum tightness . 27
6.17 Liquid tightness Tightness for liquid systems . 27
6.18 Fire hazard (flammability) . 27
6.19 Electromagnetic compatibility (EMC) . 28
6.20 X-ray emission . 28
6.21 Corrosion . 28
6.22 Filling levels for insulation, switching and/or operation . 28
6.101 Protection against mechanical stresses . 28
6.102 Protection of the environment due to internal defects . 28
6.103 Internal arc fault . 29
6.104 Enclosures . 29
6.105 Sound emission . 29
6.106 Electromagnetic fields . 29
6.107 Solar radiation . 30
7 Type tests . 30
7.1 General . 30
7.2 Dielectric tests . 31
7.3 Radio interference voltage (RIV) test . 35
7.4 Measurement of the resistance of circuits Resistance measurement . 35
7.5 Continuous current tests . 36
7.6 Short-time withstand current and peak withstand current tests . 36
7.7 Verification of the protection . 37
7.8 Tightness tests . 38
7.9 Electromagnetic compatibility tests (EMC) . 38
7.10 Additional tests on auxiliary and control circuits . 38
7.11 X-radiation test procedure for vacuum interrupters . 39
7.101 Temperature-rise tests . 39
7.102 Internal arc test . 48
7.103 Verification of making and breaking capacities of high-voltage functional unit . 51
7.104 Mechanical operation tests . 52
7.105 Mechanical stability test . 52
7.106 Pressure withstand test for gas-filled compartments. 52
7.107 Measurements of leakage currents of non-metallic enclosures . 52
7.108 Weatherproofing test . 53
7.109 Tightness and mechanical strength for liquid filled compartments . 53
7.110 Measurement or calculation of electromagnetic fields . 53
8 Routine tests . 53
8.1 General . 53
8.2 Dielectric tests on the main circuit . 54
8.3 Tests on auxiliary and control circuits . 55

– 4 – IEC 62271-212:2022 RLV © IEC 2022
8.4 Measurement of the resistance of the main circuit . 55
8.5 Tightness test . 55
8.6 Design and visual checks . 55
8.101 Mech
...

IEC 62271-212 ®
Edition 2.0 2022-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
High-voltage switchgear and controlgear –
Part 212: Compact Equipment Assembly for Distribution Substation (CEADS) for
AC voltages up to 52 kV
Appareillage à haute tension –
Partie 212: Ensemble compact d’équipement pour poste de distribution (ECEPD)
pour les tensions alternatives inférieures ou égales à 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.

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questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.

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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.

IEC publications search - webstore.iec.ch/advsearchform IEC Products & Services Portal - products.iec.ch
The advanced search enables to find IEC publications by a Discover our powerful search engine and read freely all the
variety of criteria (reference number, text, technical publications previews. With a subscription you will always
committee, …). It also gives information on projects, replaced have access to up to date content tailored to your needs.
and withdrawn publications.
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IEC Just Published - webstore.iec.ch/justpublished
The world's leading online dictionary on electrotechnology,
Stay up to date on all new IEC publications. Just Published
containing more than 22 300 terminological entries in English
details all new publications released. Available online and
and French, with equivalent terms in 19 additional languages.
once a month by email.
Also known as the International Electrotechnical Vocabulary

(IEV) online.
IEC Customer Service Centre - webstore.iec.ch/csc
If you wish to give us your feedback on this publication or
need further assistance, please contact the Customer Service
Centre: [e-mail].
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IEC 62271-212 ®
Edition 2.0 2022-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
High-voltage switchgear and controlgear –

Part 212: Compact Equipment Assembly for Distribution Substation (CEADS) for

AC voltages up to 52 kV
Appareillage à haute tension –

Partie 212: Ensemble compact d’équipement pour poste de distribution

(ECEPD) pour les tensions alternatives inférieures ou égales à 52 kV

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.130.10 ISBN 978-2-8322-3806-6

– 2 – IEC 62271-212:2022 © IEC 2022
CONTENTS
FOREWORD . 6
INTRODUCTION . 8
1 Scope . 9
2 Normative references . 9
3 Terms and definitions . 11
3.1 General terms and definitions . 11
3.2 Assemblies of switchgear and controlgear . 11
3.3 Parts of assemblies . 12
3.4 Switching devices . 13
3.5 Parts of switchgear and controlgear . 13
3.6 Operational characteristics of switchgear and controlgear . 13
3.7 Characteristic quantities . 13
3.8 Index of definitions . 13
4 Normal and special service conditions . 13
4.1 Normal service conditions . 13
4.2 Special service conditions . 14
5 Ratings . 15
5.1 General . 15
5.2 Rated voltage . 16
5.3 Rated insulation level . 16
5.4 Rated frequency (f ) . 16
r
5.5 Rated continuous current (I ) . 16
r
5.6 Rated short-time withstand current (I ) . 17
k
5.7 Rated peak withstand current (I ) . 17
p
5.9 Rated supply voltage of auxiliary and control circuits (U ) . 18
a
5.10 Rated supply frequency of auxiliary and control circuits . 18
5.11 Rated pressure of compressed gas supply for controlled pressure systems . 18
5.101 Rated power and total losses of CEADS . 19
5.102 Ratings of the internal arc classification (IAC) . 19
6 Design and construction . 20
6.1 Requirements for liquids in switchgear and controlgear . 21
6.2 Requirements for gases in switchgear and controlgear . 21
6.3 Earthing of switchgear and controlgear . 21
6.4 Auxiliary and control equipment and circuits . 22
6.5 Dependent power operation . 22
6.6 Stored energy operation . 22
6.7 Independent unlatched operation (independent manual or power operation) . 22
6.8 Manually operated actuators . 22
6.9 Operation of releases . 22
6.10 Pressure/level indication . 22
6.11 Nameplates. 22
6.12 Locking devices . 23
6.13 Position indication . 23
6.14 Degrees of protection provided by enclosures . 23
6.15 Creepage distances for outdoor insulators . 24

6.16 Gas and vacuum tightness . 24
6.17 Tightness for liquid systems . 24
6.18 Fire hazard (flammability) . 24
6.19 Electromagnetic compatibility (EMC) . 24
6.20 X-ray emission . 24
6.21 Corrosion . 24
6.22 Filling levels for insulation, switching and/or operation . 24
6.101 Protection against mechanical stresses . 25
6.102 Protection of the environment due to internal defects . 25
6.103 Internal arc fault . 25
6.104 Enclosures . 26
6.105 Sound emission . 26
6.106 Electromagnetic fields . 26
6.107 Solar radiation . 26
7 Type tests . 27
7.1 General . 27
7.2 Dielectric tests . 28
7.3 Radio interference voltage (RIV) test . 32
7.4 Resistance measurement . 32
7.5 Continuous current tests . 32
7.6 Short-time withstand current and peak withstand current tests . 32
7.7 Verification of the protection . 33
7.8 Tightness tests . 33
7.9 Electromagnetic compatibility tests (EMC) . 33
7.10 Additional tests on auxiliary and control circuits . 34
7.11 X-radiation test for vacuum interrupters . 34
7.101 Temperature-ris
...