IEC 62271-203:2022
(Main)High-voltage switchgear and controlgear - Part 203: AC gas-insulated metal-enclosed switchgear for rated voltages above 52 kV
High-voltage switchgear and controlgear - Part 203: AC gas-insulated metal-enclosed switchgear for rated voltages above 52 kV
IEC 62271-203:2022 specifies requirements for gas-insulated metal-enclosed switchgear in which the insulation is obtained, at least partly, by an insulating gas or gas mixture other than air at atmospheric pressure, for alternating current of rated voltages above 52 kV, for indoor and outdoor installation, and for service frequencies up to and including 60 Hz. This third edition cancels and replaces the second edition published in 2011. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- the document has been aligned with IEC 62271-1:2017;
- beside SF6 also alternative gases have been implemented where needed;
- the terms and definitions have been updated and terms not used have been removed;
- Subclause 6.16 “Gas and vacuum tightness” has been updated;
- Subclause 6.16.3 “Closed pressure systems”: Two classes of gas has been introduced:
- GWP ≤ 1 000
- GWP > 1 000
and the tightness requirements for type tests for gasses with GWP > 1 000 has been reduced from 0,5 % to 0,1 % per year per gas compartment;
- Subclause 6.108 “Interfaces”: Typical maximum pressures in service for interfaces connected to GIS have been defined;
- Subclauses 7.102 through 7.108 have been restructured;
- Subclause 7.107 “Corrosion test on earthing connections” has been updated;
- Subclause 7.108 “Corrosion tests on sealing systems of enclosures and auxiliary equipment” has been updated;
- Annex F ‘Service Continuity’ has been modified and aligned with the recommendations of CIGRE WG B3.51.
Appareillage à haute tension - Partie 203: Appareillage sous enveloppe métallique à isolation gazeuse et à courant alternatif de tensions assignées supérieures à 52 kV
L'IEC 62271-203:2022 spécifie les exigences pour l'appareillage sous enveloppe métallique à isolation gazeuse dont l'isolation est réalisée, au moins partiellement, par un gaz isolant ou un mélange de gaz autre que l'air à la pression atmosphérique, pour courant alternatif de tensions assignées supérieures à 52 kV, pour l'installation à l'intérieur et à l'extérieur, et pour des fréquences de service inférieures ou égales à 60 Hz. Cette troisième édition annule et remplace la deuxième édition parue en 2011. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- le document a été aligné sur l’IEC 62271-1:2017;
- outre le SF6, des gaz alternatifs ont également été mis en œuvre lorsque nécessaire;
- les termes et définitions ont été actualisés et les termes non employés ont été supprimés;
- le paragraphe 6.16 “Étanchéité au gaz et au vide” a été actualisé;
- paragraphe 6.16.3 ‘’Systèmes à pression autonome’’: Deux classes de gaz ont été présentées:
- PRC ≤ 1 000
- PRC > 1 000
et les exigences d'étanchéité relatives aux essais de type pour des gaz avec PRC > 1 000 ont été réduites de 0,5 % à 0,1 % par an et par compartiment de gaz;
- paragraphe 6.108 “Interfaces”: des pressions maximales types en service pour les interfaces reliées au PSEM ont été définies;
- les paragraphes 7.102 à 7.108 ont été restructurés;
- le paragraphe 7.107 “Essai de corrosion sur les connexions de terre” a été actualisé;
- le paragraphe 7.108 ‘’Essais de corrosion sur les systèmes d'étanchéité des enveloppes et des équipements auxiliaires’’ a été actualisé;
- l’Annexe F ‘’Continuité de service’’ a été modifiée et alignée sur les recommandations du groupe de travail B3.51 du CIGRE.
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IEC 62271-203 ®
Edition 3.0 2022-05
COMMENTED VERSION
INTERNATIONAL
STANDARD
colour
inside
High-voltage switchgear and controlgear –
Part 203: AC gas-insulated metal-enclosed switchgear for rated voltages above
52 kV
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
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IEC 62271-203 ®
Edition 3.0 2022-05
COMMENTED VERSION
INTERNATIONAL
STANDARD
colour
inside
High-voltage switchgear and controlgear –
Part 203: AC gas-insulated metal-enclosed switchgear for rated voltages above
52 kV
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.130.10 ISBN 978-2-8322-3800-4
– 2 – IEC 62271-203:2022 CMV IEC 2022
CONTENTS 1
FOREWORD .4
1 General .
1 Scope .7
2 Normative references .7
3 Terms and definitions .9
4 Normal and special service conditions . 12
5 Ratings . 13
6 Design and construction . 16
7 Type tests . 32
8 Routine tests . 49
9 Guide to the selection of switchgear and controlgear (informative) . 51
10 Information to be given with enquiries, tenders and orders (informative) . 52
11 Transport, storage, installation, operation operating instructions and maintenance . 52
12 Safety . 58
13 Influence of the product on the environment . 58
Annex A (normative) Test procedure for dielectric test on three-phase encapsulated
GIS, range II (above 245 kV) . 59
Annex B (normative) Methods for testing gas-insulated metal-enclosed switchgear
under conditions of arcing due to an internal fault . 60
Annex C (informative) Technical and practical considerations of site testing. 63
Annex D (informative) Calculation of pressure rise due to an internal fault . 68
Annex E (informative) Information to be given with enquiries, tenders and orders . 69
Annex F (informative) Service continuity . 75
Annex G (informative) Insulation levels for GIS with rated voltages higher than 800 kV .
Annex G (informative) List of notes concerning certain countries . 94
Bibliography . 95
List of comments .98
Figure 1 – Pressure coordination . 23
Figure 2 – Example of arrangement of enclosures and gas compartments . 29
Figure F.1 – Impact due to the removal of common partition between busbar-
disconnector .
Figure F.2 – Impact of GIS partitioning on service continuity .
Figure F.3 – Single line diagram with gas partitioning scheme .
Figure F.4 – Localisation and isolation .
Figure F.5 – Removal of busbar disconnector in SECTION-1 .
Figure F.6 – Removal of busbar disconnector in SECTION-3 .
Figure F.7 – Extension .
Figure F.8 – On-site dielectric test .
Figure F.1 – MRE1X (e.g. repair of disconnector to busbar) . 88
Figure F.2 – MRE00 (e.g. during visual inspection) . 88
Figure F.3 – MRE01 (e.g. repair of circuit-breaker) . 89
Figure F.4 – MRE11 (e.g. repair of disconnector) . 89
Figure F.5 – MRE11 (e.g. extension of switchgear with a feeder bay). 90
Figure F.6 – MRE13 (e.g. repair of disconnector) . 90
Figure F.7 – MRE2X (e.g. on-site dielectric test of busbar section A) . 91
Figure F.8 – MRE2X (e.g. on-site dielectric test of busbar section 1). 91
Figure F.9 – MRE00 (e.g. repair of circuit-breaker) . 92
Table 1 – Reference table of service conditions relevant to GIS . 13
Table 2 – Rated insulation levels for rated voltages for equipment of range I (245 kV
and below) . 14
Table 3 – Rated insulation levels for rated voltages for equipment of range II (above
245 kV) . 15
Table 4 – Performance criteria . 25
Table 5 – Example of grouping of Type tests . 34
Table 6 – Test voltage for measuring PD intensity . 38
Table 7 – On-site test voltages . 55
Table A.1 – Switching impulse test conditions above 245 kV . 59
Table E.1 – Normal and special service conditions . 69
Table E.2 – Ratings . 70
Table E.3 – Design and construction . 71
Table E.4 – Bus ducts . 72
Table E.5 – Bushing . 72
Table E.6 – Cable connection . 73
Table E.7 – Transformer connection . 73
Table E.8 – Current transformer . 73
Table E.9 – Inductive voltage transformer . 73
Table E.10 – Documentation for enquiries and tenders . 74
Table G.1 – Insulation levels used for GIS with rated voltages higher than 800 kV in
different countries .
– 4 – IEC 62271-203:2022 CMV IEC 2022
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR –
Part 203: AC gas-insulated metal-enclosed switchgear
for rated voltages above 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
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Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
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consensus of opinion on the relevant subjects since each technical committee has representation from all
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IEC 62271-203 ®
Edition 3.0 2022-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
High-voltage switchgear and controlgear –
Part 203: AC gas-insulated metal-enclosed switchgear for rated voltages above
52 kV
Appareillage à haute tension –
Partie 203: Appareillage sous enveloppe métallique à isolation gazeuse et à
courant alternatif de tensions assignées supérieures 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
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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.
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
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variety of criteria (reference number, text, technical publications previews. With a subscription you will always
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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.
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IEC 62271-203 ®
Edition 3.0 2022-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
High-voltage switchgear and controlgear –
Part 203: AC gas-insulated metal-enclosed switchgear for rated voltages above
52 kV
Appareillage à haute tension –
Partie 203: Appareillage sous enveloppe métallique à isolation gazeuse et à
courant alternatif de tensions assignées supérieures à 52 kV
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.130.10 ISBN 978-2-8322-3799-1
– 2 – IEC 62271-203:2022 IEC 2022
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Normal and special service conditions . 10
5 Ratings . 11
6 Design and construction . 14
7 Type tests . 27
8 Routine tests . 41
9 Guide to the selection of switchgear and controlgear (informative) . 44
10 Information to be given with enquiries, tenders and orders (informative) . 44
11 Transport, storage, installation, operating instructions and maintenance. 44
12 Safety . 50
13 Influence of the product on the environment . 51
Annex A (normative) Test procedure for dielectric test on three-phase encapsulated
GIS, range II (above 245 kV) . 52
Annex B (normative) Methods for testing gas-insulated metal-enclosed switchgear
under conditions of arcing due to an internal fault . 53
Annex C (informative) Technical and practical considerations of site testing . 56
Annex D (informative) Calculation of pressure rise due to an internal fault . 61
Annex E (informative) Information to be given with enquiries, tenders and orders . 62
Annex F (informative) Service continuity . 68
Annex G (informative) List of notes concerning certain countries . 76
Bibliography . 77
Figure 1 – Pressure coordination . 19
Figure 2 – Example of arrangement of enclosures and gas compartments . 24
Figure F.1 – MRE1X (e.g. repair of disconnector to busbar) . 71
Figure F.2 – MRE00 (e.g. during visual inspection) . 71
Figure F.3 – MRE01 (e.g. repair of circuit-breaker) . 72
Figure F.4 – MRE11 (e.g. repair of disconnector) . 72
Figure F.5 – MRE11 (e.g. extension of switchgear with a feeder bay) . 73
Figure F.6 – MRE13 (e.g. repair of disconnector) . 73
Figure F.7 – MRE2X (e.g. on-site dielectric test of busbar section A) . 74
Figure F.8 – MRE2X (e.g. on-site dielectric test of busbar section 1) . 74
Figure F.9 – MRE00 (e.g. repair of circuit-breaker) . 75
Table 1 – Reference table of service conditions relevant to GIS . 11
Table 2 – Rated insulation levels for rated voltages for equipment of range I (245 kV
and below) . 12
Table 3 – Rated insulation levels for rated voltages for equipment of range II (above
245 kV) . 13
Table 4 – Performance criteria . 20
Table 5 – Type tests . 28
Table 6 – Test voltage for measuring PD intensity . 31
Table 7 – On-site test voltages . 48
Table A.1 – Switching impulse test conditions above 245 kV . 52
Table E.1 – Normal and special service conditions . 62
Table E.2 – Ratings . 63
Table E.3 – Design and construction . 64
Table E.4 – Bus ducts . 65
Table E.5 – Bushing. 65
Table E.6 – Cable connection . 66
Table E.7 – Transformer connection . 66
Table E.8 – Current transformer . 66
Table E.9 – Inductive voltage transformer . 66
Table E.10 – Documentation for enquiries and tenders . 67
– 4 – IEC 62271-203:2022 IEC 2022
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR –
Part 203: AC gas-insulated metal-enclosed switchgear
for rated voltages above 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
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 th
...
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