SIST EN IEC 62271-202:2022

High-voltage switchgear and controlgear - Part 202: AC prefabricated substations for rated voltages above 1 kV and up to and including 52 kV (IEC 62271-202:2022)

This part of IEC 62271 specifies the service conditions, rated characteristics, general structural requirements and test methods of enclosed high-voltage prefabricated substations. These prefabricated substations are cable-connected to AC high-voltage networks with highest operating voltage up to and including 52 kV and power frequencies up to and including 60 Hz. They can be manually operated from inside (walk-in type) or from outside (non-walk-in type).They are designed for outdoor installation at locations with public accessibility and where protection of personnel is provided.
These prefabricated substations can be situated at ground level or partially or completely below ground level. The last are also called underground prefabricated substations.
In general, two types of prefabricated substations are considered in this standard:
- high-voltage switching prefabricated substations;
- high-voltage/low-voltage transformer prefabricated substations (step-up and step-down).
A high-voltage switching prefabricated substation comprises an enclosure containing in general the following electrical components:
- high-voltage switchgear and controlgear;
- auxiliary equipment and circuits.
A high-voltage/low-voltage transformer prefabricated substation comprises an enclosure containing in general the following electrical components:
- power transformers;
- high-voltage and low-voltage switchgear and controlgear;
- high-voltage and low-voltage interconnections;
- auxiliary equipment and circuits.
However, relevant provisions of this standard are applicable to designs where not all these electrical components exist (for example, a prefabricated substation consisting of power transformer and low-voltage switchgear and controlgear).
The listed electrical components of a high-voltage/low-voltage transformer prefabricated substation can be incorporated in the prefabricated substation either as separate components or as an assembly type CEADS according to IEC 62271-212.
This standard covers only designs using natural ventilation. However, relevant provisions of this standard are applicable to designs using other means of ventilation except the rated power of the prefabricated substation and associated class of enclosure (see 5.101), the continuous current tests (see 7.5) and all temperature rise related requirements, which would require an agreement between manufacturer and user.
NOTE IEC 61936-1 [1] provides general rules for the design and erection of high-voltage power installations. As well, it specifies additional requirements for the external connections, erection and operation at the place of installation of high-voltage prefabricated substations compliant with IEC 62271-202, which are regarded as a component of such installation. Non-prefabricated high-voltage substations, 483 are generally covered by IEC 61936-1 [1].

Hochspannungs-Schaltgeräte und -Schaltanlagen - Teil 202: Fabrikfertige Wechselstrom-Stationen für Bemessungsspannungen über 1 kV bis einschließlich 52 kV (IEC 62271-202:2022)

Appareillage à haute tension - Partie 202: Postes préfabriqués pour courant alternatif de tensions assignées supérieures à 1 kV et inférieures ou égales à 52 kV (IEC 62271-202:2022)

L'IEC 62271-202:2022 spécifie les conditions de service, les caractéristiques assignées, les exigences structurelles générales et les méthodes d'essai applicables aux postes préfabriqués haute tension sous enveloppe. Ces postes préfabriqués sont connectés par câble à des réseaux haute tension à courant alternatif avec une tension de service inférieure ou égale à 52 kV et des fréquences de puissance inférieures ou égales à 60 Hz. Ces postes peuvent être manœuvrés de l'intérieur (à aire de manœuvre) ou de l'extérieur (sans aire de manœuvre). Ils sont conçus pour une installation extérieure en des emplacements accessibles au public et ils assurent la protection du personnel.
Cette troisième édition annule et remplace la deuxième édition, parue en 2014. Cette édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:

   
1. révision du contenu et de la structure de l'ensemble du document avec prise en considération toute particulière de l’IEC 62271-1:2017;

   
2. modification du titre et du domaine d’application afin d’inclure les postes préfabriqués de connexion haute tension;

   
3. inclusion d’un ECEPD comme composante potentielle d’un poste préfabriqué MT/BT;

   
4. au paragraphe 7.2.101, prise en considération nouvelle de l’influence potentielle des éléments environnants sur les performances diélectriques des composants à haute tension comme les appareillages à haute tension et les interconnexions haute tension sous enveloppe non métallique ou sans écran mis à la terre;

   
5. nouvelle Annex G informative avec procédure d'essai destinée à évaluer l’effet du rayonnement solaire sur les températures à l’intérieur de l’enveloppe et comment appliquer cette procédure;

   
6. nouvelle Annex H informative pour la prise en considération appropriée des conditions d’installation du matériel électronique;

   
7. la puissance assignée d’un poste préfabriqué est maintenant définie comme une valeur assignée à trois paramètres. Voir le paragraphe 5.101.1:

   
8. introduction de dimensions minimales pour les portes d’accès au poste préfabriqué (6.104.4) et pour la hauteur libre du couloir de manœuvre (6.105.3);

   
9. révision/clarification, lorsque cela est nécessaire, des méthodes d'essai (d’échauffement) au courant permanent;

   
10. correction de la Figure D.1, qui décrit le facteur de charge du transformateur de puissance immergé dans l’huile minérale à l’intérieur de l’enveloppe.

Visokonapetostne stikalne in krmilne naprave - 202. del: Montažne postaje AC za naznačene napetosti nad 1 kV do vključno 52 kV (IEC 62271-202:2022)

Ta del standarda IEC 62271 določa splošne pogoje delovanja, naznačene značilnosti, splošne strukturne zahteve in preskusne metode za visokonapetostne montažne postaje v ohišjih. Te montažne postajo so kabelsko povezane z izmeničnimi visokonapetostnimi omrežji z najvišjo delovno napetostjo do vključno 52 kV in najvišjimi omrežnimi frekvencami do vključno 60 Hz. Upravljati jih je mogoče ročno, in sicer z notranje (vrsta z vhodom) ali zunanje (vrsta brez vhoda) strani. Zasnovane so za zunanjo namestitev na javno dostopnih lokacijah, kjer je zagotovljena zaščita osebja.
Te montažne postaje se lahko nahajajo na tleh ali delno ali popolnoma pod površjem. Slednje imenujemo tudi podzemne montažne postaje.
V tem standardu sta obravnavani dve vrsti montažnih postaj:
– visokonapetostne stikalne montažne postaje;
– visoko-/nizkonapetostne transformatorske montažne postaje (z regulacijo navzgor in navzdol).
Visokonapetostna stikalna montažna postaja zajema ohišje, ki na splošno vsebuje naslednje električne komponente:
– visokonapetostne stikalne in krmilne naprave;
– pomožna oprema in vezja.
Visoko-/nizkonapetostna transformatorska montažna postaja zajema ohišje, ki na splošno vsebuje naslednje električne komponente:
– močnostni transformatorji;
– visokonapetostne ter nizkonapetostne stikalne in krmilne naprave;
– visokonapetostne ter nizkonapetostne povezave;
– pomožna oprema in vezja.
Vendar pa se zadevne določbe tega standarda uporabljajo za zasnove, pri katerih ne obstajajo vse te električne komponente (na primer montažna postaja, ki vključuje močnostni transformator ter nizkonapetostno stikalno in krmilno napravo).
Navedene električne komponente visokonapetostne/nizkonapetostne transformatorske montažne postaje se lahko v montažno postajo vključijo posamično ali kot del kompaktnih sestavov opreme za distribucijske podpostaje (CEADS) v skladu s standardom IEC 62271-212.
Ta standard zajema samo zasnove z naravnim prezračevanjem, vendar ustrezne določbe tega standarda veljajo tudi za zasnove, pri katerih se uporabljajo drugi načini prezračevanja, razen kar zadeva nazivno moč montažnih postaj in z njo povezano ohišje (glej točko 5.101), preskuse neprekinjenosti toka (glej točko 7.5) in vse zahteve, povezane z dvigom temperature, za katere je potreben dogovor med proizvajalcem in uporabnikom.
OPOMBA: Standard IEC 61936-1 [1] določa splošna pravila za načrtovanje in postavitev visokonapetostnih električnih inštalacij. V njem so navedene tudi dodatne zahteve za zunanje povezave, postavitev in obratovanje na mestu namestitve visokonapetostnih montažnih postaj v skladu s standardom IEC 62271-202, ki se obravnavajo kot komponenta take inštalacije. Nemontažne visokonapetostne postaje (483) so na splošno zajete v standardu IEC 61936-1 [1].

General Information

• Status: Published
• Publication Date: 04-Sep-2022
• ICS: 29.130.10 - High voltage switchgear and controlgear
• Technical Committee: SKA - Switchgear and control gear
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 23-Aug-2022
• Due Date: 28-Oct-2022
• Completion Date: 05-Sep-2022
• Ref Project: EN IEC 62271-202:2022 - High-voltage switchgear and controlgear - Part 202: AC prefabricated substations for rated voltages above 1 kV and up to and including 52 kV

Relations

• Revised: SIST EN 62271-202:2014 - High-voltage switchgear and controlgear - Part 202: High voltage/low voltage prefabricated substation
• Effective Date: 07-Jan-2020
• Revised: SIST EN 62271-202:2014/AC:2014 - High-voltage switchgear and controlgear - Part 202: High-voltage/low-voltage prefabricated substation
• Effective Date: 14-Jan-2020
• Revised: SIST EN 62271-202:2014/AC:2015 - High-voltage switchgear and controlgear - Part 202: High-voltage/low-voltage prefabricated substation
• Effective Date: 14-Jan-2020
• Replaces: SIST EN 62271-202:2014 - High-voltage switchgear and controlgear - Part 202: High voltage/low voltage prefabricated substation
• Effective Date: 16-Aug-2022
• Replaces: SIST EN 62271-202:2014/AC:2015 - High-voltage switchgear and controlgear - Part 202: High-voltage/low-voltage prefabricated substation
• Effective Date: 16-Aug-2022
• Replaces: SIST EN 62271-202:2014/AC:2014 - High-voltage switchgear and controlgear - Part 202: High-voltage/low-voltage prefabricated substation
• Effective Date: 16-Aug-2022

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN IEC 62271-202:2022
01-oktober-2022
Nadomešča:
SIST EN 62271-202:2014
SIST EN 62271-202:2014/AC:2014
SIST EN 62271-202:2014/AC:2015
Visokonapetostne stikalne in krmilne naprave - 202. del: Montažne postaje AC za
naznačene napetosti nad 1 kV do vključno 52 kV (IEC 62271-202:2022)
High-voltage switchgear and controlgear - Part 202: AC prefabricated substations for
rated voltages above 1 kV and up to and including 52 kV (IEC 62271-202:2022)
Hochspannungs-Schaltgeräte und -Schaltanlagen - Teil 202: Fabrikfertige
Wechselstrom-Stationen für Bemessungsspannungen über 1 kV bis einschließlich 52 kV
(IEC 62271-202:2022)
Appareillage à haute tension - Partie 202: Postes préfabriqués pour courant alternatif de
tensions assignées supérieures à 1 kV et inférieures ou égales à 52 kV (IEC 62271-
202:2022)
Ta slovenski standard je istoveten z: EN IEC 62271-202:2022
ICS:
29.130.10 Visokonapetostne stikalne in High voltage switchgear and
krmilne naprave controlgear
SIST EN IEC 62271-202:2022 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN IEC 62271-202:2022

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SIST EN IEC 62271-202:2022


EUROPEAN STANDARD EN IEC 62271-202

NORME EUROPÉENNE

EUROPÄISCHE NORM August 2022
ICS 29.130.10 Supersedes EN 62271-202:2014; EN 62271-
202:2014/AC:2014; EN 62271-202:2014/AC:2015
English Version
High-voltage switchgear and controlgear - Part 202: AC
prefabricated substations for rated voltages above 1 kV and up
to and including 52 kV
(IEC 62271-202:2022)
Appareillage à haute tension - Partie 202: Postes Hochspannungs-Schaltgeräte und -Schaltanlagen -
préfabriqués pour courant alternatif de tensions assignées Teil 202: Fabrikfertige Wechselstrom-Stationen für
supérieures à 1 kV et inférieures ou égales à 52 kV Bemessungsspannungen über 1 kV bis einschließlich 52 kV
(IEC 62271-202:2022) (IEC 62271-202:2022)
This European Standard was approved by CENELEC on 2022-07-27. 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
© 2022 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
 Ref. No. EN IEC 62271-202:2022 E

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SIST EN IEC 62271-202:2022
EN IEC 62271-202:2022 (E)
European foreword
The text of document 17C/843/FDIS, future edition 3 of IEC 62271-202, prepared by SC 17C
"Assemblies" of IEC/TC 17 "High-voltage switchgear and controlgear" was submitted to the IEC-
CENELEC parallel vote and approved by CENELEC as EN IEC 62271-202:2022.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2023-04-27
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2025-07-27
document have to be withdrawn
This document supersedes EN 62271-202:2014 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 62271-202:2022 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 standards
indicated:
IEC 61936-1:2021 NOTE Harmonized as EN IEC 61936-1:2021 (not modified)
IEC 60059:1999 NOTE Harmonized as EN 60059:1999 (not modified)
IEC 60076 (series) NOTE Harmonized as EN 60076 (series)
IEC 62271-4:2013 NOTE Harmonized as EN 62271-4:2013 (not modified)
IEC 60364-4-41:2005 NOTE Harmonized as HD 60364-4-41:2017 + A11:2017
IEC 60721-3-2:2018 NOTE Harmonized as EN IEC 60721-3-2:2018 (not modified)
IEC 60068 (series) NOTE Harmonized as EN 60068 (series)
IEC/TR 62271-208:2009 NOTE Harmonized as CLC/TR 62271-208:2010 (not modified)
IEC 60243-1:2013 NOTE Harmonized as EN 60243-1:2013 (not modified)
ISO 9223 NOTE Harmonized as EN ISO 9223
2

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SIST EN IEC 62271-202:2022
EN IEC 62271-202:2022 (E)
ISO 9224 NOTE Harmonized as EN ISO 9224
IEC 60721-2-6:1990 NOTE Harmonized as HD 478.2.6 S1:1993 (not modified)
IEC/IEEE 82079-1:2019 NOTE Harmonized as EN IEC/IEEE 82079-1:2020 (not modified)
ISO 13732-1:2006 NOTE Harmonized as EN ISO 13732-1:2008 (not modified)
IEC 62430:2019 NOTE Harmonized as EN IEC 62430:2019 (not modified)
ISO 1460 NOTE Harmonized as EN ISO 1460
ISO 1461 NOTE Harmonized as EN ISO 1461
ISO 2081 NOTE Harmonized as EN ISO 2081
ISO 2409 NOTE Harmonized as EN ISO 2409
ISO 9227 NOTE Harmonized as EN ISO 9227
ISO 11997 (series) NOTE Harmonized as EN ISO 11997 (series)
ISO 7784 (series) NOTE Harmonized as EN ISO 7784 (series)
ISO 12944 (series) NOTE Harmonized as EN ISO 12944 (series)
IEC 60865-1:2011 NOTE Harmonized as EN 60865-1:2012 (not modified)
IEC 60076-3 NOTE Harmonized as EN 60076-3
IEC 61869 (series) NOTE Harmonized as EN IEC 61869 (series)
3

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SIST EN IEC 62271-202:2022
EN IEC 62271-202:2022 (E)
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 60050-441 - International Electrotechnical Vocabulary. - -
Switchgear, controlgear and fuses
IEC 60050-461 2008 International Electrotechnical Vocabulary - - -
Part 461: Electric cables
IEC 60068-2-5 2018 Environmental testing - Part 2-5: Tests - EN IEC 60068-2-5 2018
Test S: Simulated solar radiation at ground
level and guidance for solar radiation
testing and weathering
IEC 60071-1 2019 Insulation co-ordination - Part 1: Definitions, EN IEC 60071-1 2019
principles and rules
IEC 60076-1 2011 Power transformers - Part 1: General EN 60076-1 2011
IEC 60076-2 2011 Power transformers - Part 2: Temperature EN 60076-2 2011
rise for liquid-immersed transformers
IEC 60076-5 2006 Power transformers - Part 5: Ability to EN 60076-5 2006
withstand short circuit
IEC 60076-7 2018 Power transformers - Part 7: Loading guide - -
for mineral-oil-immersed power
transformers
IEC 60076-10 2016 Power transformers - Part 10: EN 60076-10 2016
Determination of sound levels
IEC 60076-11 2018 Power transformers - Part 11: Dry-type EN IEC 60076-11 2018
transformers
IEC 60076-12 2008 Power transformers - Part 12: Loading - -
guide for dry-type power transformers
IEC 60529 1989 Degrees of protection provided by EN 60529 1991
enclosures (IP Code)
- - + corrigendum May 1993
+ A1 1999 + A1 2000
+ A2 2013 + A2 2013
4

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SIST EN IEC 62271-202:2022
EN IEC 62271-202:2022 (E)
Publication Year Title EN/HD Year
IEC 60664-1 2020 Insulation coordination for equipment within EN IEC 60664-1 2020
low-voltage supply systems - Part 1:
Principles, requirements and tests
IEC 60721-1 1990 Classification of environmental conditions - EN 60721-1 1995
Part 1: Environmental parameters and their
severities
+ A1 1992 - -
+ A2 1995 + A2 1995
IEC 60721-2-2 2012 Classification of environmental conditions - EN 60721-2-2 2013
Part 2-2: Environmental conditions
appearing in nature - Precipitation and wind
IEC 60721-2-4 2018 Classification of environmental conditions - EN IEC 60721-2-4 2018
Part 2-4: Environmental conditions
appearing in nature - Solar radiation and
temperature
- - + AC 2018-
12
IEC 60721-3-4 - Classification of environmental conditions - EN IEC 60721-3-4 -
Part 3-4: Classification of groups of
environmental parameters and their
severities - Stationary use at non-
weatherprotected locations
IEC/TS 60815-1 2008 Selection and dimensioning of high-voltage - -
insulators intended for use in polluted
conditions - Part 1: Definitions, information
and general principles
IEC 60947-1 - Low-voltage switchgear and controlgear - EN IEC 60947-1 -
Part 1: General rules
1
IEC 61180-1 1992 High-voltage test techniques for low-voltage - -
equipment -- Part 1: Definitions, test and
procedure requirements
IEC 61439 series Low-voltage switchgear and controlgear EN IEC 61439 series
assemblies
IEC 61439-1 2020 Low-voltage switchgear and controlgear EN IEC 61439-1 2021
assemblies - Part 1: General rules
IEC 62262 2002 Degrees of protection provided by EN 62262 2002
enclosures for electrical equipment against
external mechanical impacts (IK code)
IEC 62271-1 2017 High-voltage switchgear and controlgear - EN 62271-1 2017
Part 1: Common specifications for
alternating current switchgear and
controlgear
IEC 62271-200 2021 High-voltage switchgear and controlgear - EN IEC 62271-200 2021
Part 200: AC metal-enclosed switchgear
and controlgear for rated voltages above 1
kV and up to and including 52 kV

1
This publication has been partially replaced with IEC 61180:2016.
5

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SIST EN IEC 62271-202:2022
EN IEC 62271-202:2022 (E)
Publication Year Title EN/HD Year
IEC 62271-201 2014 High-voltage switchgear and controlgear - EN 62271-201 2014
Part 201: AC solid-insulation enclosed
switchgear and controlgear for rated
voltages above 1 kV and up to and
including 52 kV
IEC 62271-212 2016 High-voltage switchgear and controlgear - EN 62271-212 2017
Part 212: Compact Equipment Assembly for
Distribution Substation (CEADS)
ISO 1182 2010 Reaction to fire tests for products - Non- - -
combustibility tests
ISO 1716 2018 Reaction to fire tests for products - EN ISO 1716 2018
Determination of the gross heat of
combustion (calorific value)
ISO 6508-1 2016 Metallic materials - Rockwell hardness test - EN ISO 6508-1 2016
Part 1: Test method
- - Hot rolled products of structural steels - EN 10025-2 2019
Part 2: Technical delivery conditions for
non-alloy structural steels

6

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SIST EN IEC 62271-202:2022




IEC 62271-202

®


Edition 3.0 2022-06




INTERNATIONAL



STANDARD




NORME


INTERNATIONALE
colour

inside










High-voltage switchgear and controlgear –

Part 202: AC prefabricated substations for rated voltages above 1 kV and up to

and including 52 kV



Appareillage à haute tension –

Partie 202 : Postes préfabriqués pour courant alternatif de tensions assignées


supérieures à 1 kV et inférieures ou égales à 52 kV













INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE


INTERNATIONALE




ICS 29.130.10 ISBN 978-2-8322-1609-5




Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

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Marque déposée de la Commission Electrotechnique Internationale

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SIST EN IEC 62271-202:2022
– 2 – IEC 62271-202:2022 © IEC 2022
CONTENTS
FOREWORD . 9
INTRODUCTION . 11
1 Scope . 12
2 Normative references . 13
3 Terms and definitions . 15
3.1 General terms and definitions . 15
3.2 Assemblies of switchgear and controlgear . 15
3.3 Parts of assemblies . 15
3.4 Switching devices . 16
3.5 Parts of switchgear and controlgear . 17
3.6 Operational characteristics of switchgear and controlgear . 17
3.7 Characteristic quantities . 18
3.8 Index of definitions . 18
4 Normal and special service conditions . 18
4.1 Normal service conditions . 18
4.1.1 General . 18
4.1.2 Indoor switchgear and controlgear . 19
4.1.3 Outdoor switchgear and controlgear . 19
4.1.101 Low-voltage switchgear and controlgear . 19
4.1.102 Power transformer . 19
4.2 Special service conditions . 20
4.2.1 General . 20
4.2.2 Altitude . 20
4.2.3 Exposure to pollution . 20
4.2.4 Temperature and humidity . 21
4.2.5 Exposure to abnormal vibrations, shock or tilting . 21
4.2.6 Wind speed . 21
4.2.7 Other parameters . 21
5 Ratings . 21
5.1 General . 21
5.2 Rated voltage (U ) . 22
r
5.3 Rated insulation level (U , U , U ) . 22
d p s
5.4 Rated frequency (f ) . 23
r
5.5 Rated continuous current (I ) . 23
r
5.6 Rated short-time withstand current (I ) . 23
k
5.6.101 Rated short-time withstand current of high-voltage switchgear and
controlgear and high-voltage interconnection (I ) . 23
k
5.6.102 Rated short-time phase to earth withstand current (I ) . 24
ke
5.6.103 Rated short-time withstand currents of low-voltage switchgear and
controlgear and low-voltage interconnection (I ) . 24
cw
5.7 Rated peak withstand current (I ) . 24
p
5.7.101 Rated peak phase to earth withstand current (I ) . 24
pe
5.7.102 Rated peak withstand currents of low-voltage switchgear and
controlgear and low-voltage interconnection (I ) . 24
pk
5.8 Rated duration of short-circuit (t ) . 24
k

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SIST EN IEC 62271-202:2022
IEC 62271-202:2022 © IEC 2022 – 3 –
5.8.101 Rated duration of short-circuit (t ) . 25
k
5.8.102 Rated duration of phase to earth short-circuit (t ) . 25
ke
5.8.103 Rated duration of short-circuits for low-voltage switchgear and
controlgear and low-voltage interconnection . 25
5.8.104 Rated duration of short-circuits for power transformers . 25
5.9 Rated supply voltage of auxiliary and control circuits (U ) . 25
a
5.10 Rated supply frequency of auxiliary and control circuits . 25
5.11 Rated pressure of compressed gas supply for controlled pressure systems . 25
5.101 Rated power of prefabricated substation and class of enclosure . 25
5.101.1 Rated power of the prefabricated substation . 25
5.101.2 Rated class of enclosure . 26
5.102 Ratings of the internal arc classification (IAC) . 26
5.102.1 General . 26
5.102.2 Types of accessibility (A, B, AB) . 26
5.102.3 Rated arc fault currents (I , I ) . 27
A Ae
5.102.4 Rated arc fault duration (t , t ) . 27
A Ae
6 Design and construction . 27
6.1 Requirements for liquids in switchgear and controlgear . 28
6.2 Requirements for gases in switchgear and controlgear . 28
6.3 Earthing of switchgear and controlgear . 28
6.4 Auxiliary and control equipment and circuits . 29
6.4.1 General . 29
6.4.2 Protection against electric shock . 29
6.4.3 Components installed in enclosures . 30
6.5 Dependent power operation . 30
6.6 Stored energy operation . 30
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
6.12 Locking devices . 31
6.13 Position indication . 31
6.14 Degrees of protection provided by enclosures . 31
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) . 32
6.19 Electromagnetic compatibility (EMC) . 32
6.20 X-ray emission . 32
6.21 Corrosion . 32
6.22 Filling levels for insulation, switching and/or operation . 32
6.101 Protection of the prefabricated substation against mechanical stress . 33
6.102 Protection of the environment due to internal defects . 33
6.103 Internal arc fault . 34
6.104 Enclosure . 34
6.104.1 General . 34
6.104.2 Fire behaviour . 35

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SIST EN IEC 62271-202:2022
– 4 – IEC 62271-202:2022 © IEC 2022
6.104.3 Environmental considerations . 36
6.104.4 Covers and doors . 36
6.104.5 Ventilation openings . 37
6.104.6 Partitions . 37
6.105 Other provisions. 37
6.105.1 Provisions for dielectric tests on cables . 37
6.105.2 Accessories . 37
6.105.3 Operation aisle . 38
6.105.4 Labels . 38
6.105.5 Provisions for on-site assembly of prefabricated substation . 38
6.106 Sound emission . 38
6.107 Electromagnetic fields . 38
6.108 Solar radiation . 38
7 Type tests . 39
7.1 General . 39
7.1.1 Basics . 39
7.1.2 Information for identification of test objects . 40
7.1.3 Information to be included in type-test reports . 40
7.2 Dielectric tests . 40
7.2.1 General . 40
7.2.2 Ambient air conditions during tests . 41
7.2.3 Wet test procedure . 41
7.2.4 Arrangement of the equipment . 41
7.2.5 Criteria to pass the test . 41
7.2.6 Application of the test voltage and test conditions . 41
7.2.7 Tests of switchgear and controlgear of U ≤ 245 kV . 41
r
7.2.8 Tests of switchgear and controlgear of U > 245 kV . 41
r
7.2.9 Artificial pollution tests for outdoor insulators . 41
7.2.10 Partial discharge tests . 41
7.2.11 Dielectric tests on auxiliary and control circuits . 41
7.2.12 Voltage test as condition check . 42
7.2.101 Tests on the high-voltage components . 42
7.2.102 Tests on low-voltage interconnection . 43
7.3 Radio interference voltage (RIV) test . 44
7.4 Resistance measurement . 44
7.4.1 Measurement of the resistance of auxiliary contacts class 1 and class 2. 44
7.4.2 Measurement of the resistance of auxiliary contacts class 3 . 44
7.4.3 Electrical continuity of earthed metallic parts test . 44
7.4.4 Resistance measurement of contacts and connections in the main
circuit as a condition check . 45
7.5 Continuous current tests . 45
7.5.101 General . 45
7.5.102 Test conditions . 46
7.5.103 Test methods . 47
7.5.104 Measurements . 51
7.5.105 Acceptance criteria . 53
7.5.106 Continuous current test under solar radiation . 54
7.6 Short-time withstand current and peak withstand current tests . 54
7.7 Verification of the protection . 55

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