EN 62271-203:2012

SLOVENSKI STANDARD
01-julij-2012
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High-voltage switchgear and controlgear - Part 203: Gas-insulated metal-enclosed
switchgear for rated voltages above 52 kV (IEC 62271-203:2011)
Hochspannungs-Schaltgeräte und -Schaltanlagen - Teil 203: Gasisolierte
metallgekapselte Schaltanlagen für Bemessungsspannungen über 52 kV (IEC 62271-
203:2011)
Appareillage à haute tension - Partie 203: Appareillage sous enveloppe métallique à
isolation gazeuse de tensions assignées supérieures à 52 kV (CEI 62271-203:2011)
Ta slovenski standard je istoveten z: EN 62271-203:2012
ICS:
29.130.10 Visokonapetostne stikalne in High voltage switchgear and
krmilne naprave controlgear
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 62271-203
NORME EUROPÉENNE
May 2012
EUROPÄISCHE NORM
ICS 29.130.10 Supersedes EN 62271-203:2004

English version
High-voltage switchgear and controlgear -
Part 203: Gas-insulated metal-enclosed switchgear for rated voltages
above 52 kV
(IEC 62271-203:2011)
Appareillage à haute tension -  Hochspannungs-Schaltgeräte und -
Partie 203: Appareillage sous enveloppe Schaltanlagen -
métallique à isolation gazeuse de tensions Teil 203: Gasisolierte metallgekapselte
assignées supérieures à 52 kV Schaltanlagen für
(CEI 62271-203:2011) Bemessungsspannungen über 52 kV
(IEC 62271-203:2011)
This European Standard was approved by CENELEC on 2011-10-12. 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, Romania, Slovakia, Slovenia,
Spain, Sweden, Switzerland, Turkey and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Management Centre: Avenue Marnix 17, B - 1000 Brussels

© 2012 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 62271-203:2012 E
Foreword
The text of document 17C/512/FDIS, future edition 2 of IEC 62271-203, prepared by SC 17C, "High-
voltage switchgear and controlgear assemblies", of IEC TC 17, "Switchgear and controlgear" was
submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 62271-203:2012.

The following dates are fixed:
(dop) 2012-11-11
• latest date by which the document has
to be implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2014-10-12

standards conflicting with the
document have to be withdrawn
This document supersedes EN 62271-203:2004.
203:2004:
— adopting the structure and the content to EN 62271-1,
— harmonisation with IEEE C37.122,
— addition of the new Annex F and the new Annex G.
applicable unless otherwise specified. In order to simplify the indication of corresponding requirements,
the same numbering of clauses and subclauses is used as in EN 62271-1. Amendments to these clauses
and subclauses are given under the same numbering, whilst additional subclauses, are numbered from
101.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such patent
rights.
Endorsement notice
The text of the International Standard IEC 62271-203:2011 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 60038 NOTE  Harmonized as EN 60038.
IEC 60060-1 NOTE  Harmonized as EN 60060-1.
IEC 60071-1:2006 NOTE  Harmonized as EN 60071-1:2006 (not modified).
IEC 61462 NOTE  Harmonized as EN 61462.
IEC 61672-1 NOTE  Harmonized as EN 61672-1.
IEC 61672-2 NOTE  Harmonized as EN 61672-2.
IEC 62155 NOTE  Harmonized as EN 62155.
IEC 62271-207 NOTE  Harmonized as EN 62271-207.

- 3 - EN 62271-203:2012
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.

NOTE  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year

IEC 60044-1 (mod) 1996 Instrument transformers - EN 60044-1 1999
Part 1: Current transformers
1)
IEC 60044-2 (mod) 1997 Instrument transformers - EN 60044-2 1999
Part 2: Inductive voltage transformers

IEC 60068-2-11 - Environmental testing - EN 60068-2-11 -
Part 2: Tests - Test Ka: Salt mist

IEC 60137 2008 Insulated bushings for alternating voltages EN 60137 2008
above 1 000 V
IEC 60141-1 - Tests on oil-filled and gas-pressure cables - -
and their accessories -
Part 1: Oil-filled, paper- insulated, metal-
shealthed cables and accessories for
alternating voltages up to and including 400
kV
IEC 60270 - High-voltage test techniques - Partial EN 60270 -
discharge measurements
IEC 60376 - Specification of technical grade sulfur EN 60376 -
hexafluoride (SF6) for use in electrical
equipment
IEC 60480 - Guidelines for the checking and treatment of EN 60480 -
sulphur hexafluoride (SF6) taken from
electrical equipment and specification for its
re-use
IEC 60840 - Power cables with extruded insulation and - -
their accessories for rated voltages above 30
kV (Um = 36 kV) up to 150 kV (Um = 170 kV)
- Test methods and requirements

IEC/TS 61639 1996 Direct connection between power - -
transformers and gas-insulated metal-
enclosed switchgear for rated voltages of 72,5
kV and above
IEC 62067 - Power cables with extruded insulation and - -
their accessories for rated voltages above 150
kV (Um = 170 kV) up to 500 kV (Um = 550 kV)
- Test methods and requirements

IEC 62271-1 2007 High-voltage switchgear and controlgear - EN 62271-1 2008
Part 1: Common specifications
IEC 62271-100 2008 High-voltage switchgear and controlgear - EN 62271-100 2009
Part 100: Alternating current circuit-breakers

1)
EN 60044-2 is superseded by EN 61869-3:2011, which is based on IEC 61869-3:2011.

Publication Year Title EN/HD Year

IEC 62271-102 2001 High-voltage switchgear and controlgear - EN 62271-102 2002
+ corr. April 2002 Part 102: Alternating current disconnectors + corr. July 2008
+ corr. February 2005 and earthing switches + corr. March 2005
+ corr. May 2003
IEC 62271-209 2007 High-voltage switchgear and controlgear - EN 62271-209 2007
Part 209: Cable connections for gas-insulated
metal-enclosed switchgear for rated voltages
above 52 kV - Fluid-filled and extruded
insulation cables - Fluid-filled and dry-type
cable-terminations
IEC/TR 62271-303 - High-voltage switchgear and controlgear - CLC/TR 62271-303 -
Part 303: Use and handling of sulphur
hexafluoride (SF6)
ISO 3231 - Paints and varnishes - Determination of EN ISO 3231 -
resistance to humid atmospheres containing
sulphur dioxide
- 5 - EN 62271-203:2012
Annex ZB
(informative)
A-deviations
A-deviation: National deviation due to regulations, the alteration of which is for the time being outside the
competence of the CENELEC member.
This European Standard does not fall under any Directive of the EU.
In the relevant CEN-CENELEC countries these A-deviations are valid instead of the provisions of the
European Standard until they have been removed.
Article Deviation
5.103.2 Italy (Italian pressure vessel code for electrical switchgear DM 1 December 1980 and DM
10 September 1981 published in Gazzetta Ufficiale della Repubblica Italiana n° 285 dated
16.10.1981)
For metal-enclosed switchgear and controlgear containing gas-filled compartments, the
design pressure is limited to a maximum of 0,5 bar (gauge) and the volume is limited to a
maximum of 2 m . Gas filled compartments having a design pressure exceeding 0,5 bar
(gauge) or a volume exceeding 2 m3 shall be designed according to the Italian pressure
vessel code for electrical switchgear.

IEC 62271-203 ®
Edition 2.0 2011-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
High-voltage switchgear and controlgear –
Part 203: Gas-insulated metal-enclosed switchgear for rated voltages above
52 kV
Appareillage à haute tension –
Partie 203: Appareillage sous enveloppe métallique à isolation gazeuse de
tensions assignées supérieures à 52 kV

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX XC
ICS 29.130.10 ISBN 978-2-88912-664-4

– 2 – 62271-203  IEC:2011
CONTENTS
FOREWORD . 6
1 General . 8
1.1 Scope . 8
1.2 Normative references . 8
2 Normal and special service conditions . 9
2.1 Normal service conditions . 9
2.2 Special service conditions . 9
3 Terms and definitions . 10
4 Ratings . 12
4.1 Rated voltage (U ) . 13
r
4.2 Rated insulation level . 13
4.3 Rated frequency (f ) . 15
r
4.4 Rated normal current and temperature rise . 15
4.4.1 Rated normal current (I ) . 15
r
4.4.2 Temperature rise . 15
4.5 Rated short-time withstand current (I ) . 15
k
4.6 Rated peak withstand current (I ) . 15
p
4.7 Rated duration of short-circuit (t ) . 15
k
4.8 Rated supply voltage of closing and opening devices and of auxiliary and
control circuits (U ) . 15
a
4.9 Rated supply frequency of closing and opening devices and of auxiliary
circuits . 16
4.10 Rated pressure of compressed gas supply for controlled pressure systems . 16
4.11 Rated filling levels for insulation and/or operation . 16
5 Design and construction . 16
5.1 Requirements for liquids in switchgear and controlgear . 16
5.2 Requirements for gases in switchgear and controlgear . 16
5.3 Earthing of switchgear and controlgear . 16
5.4 Auxiliary and control equipment . 17
5.5 Dependent power operation . 17
5.6 Stored energy operation .
...