EN 62271-211:2014

SLOVENSKI STANDARD
01-september-2014
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High-voltage switchgear and controlgear - Part 211: Direct connection between power
transformers and gas-insulated metal-enclosed switchgear for rated voltages above 52
kV
Ta slovenski standard je istoveten z: EN 62271-211:2014
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 62271-211

NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2014
ICS 29.130.10
English Version
High-voltage switchgear and controlgear - Part 211: Direct
connection between power transformers and gas-insulated
metal-enclosed switchgear for rated voltages above 52 kV
(IEC 62271-211:2014)
Appareillage à haute tension - Partie 211: Raccordements Hochspannungs-Schaltgeräte und -Schaltanlagen - Teil
directs entre transformateurs de puissance et appareillage 211: Direkte Verbindungen zwischen
sous enveloppe métallique à isolation gazeuse de tensions Leistungstransformatoren und gasisolierten
assignées supérieures à 52 kV metallgekapselten Schaltanlagen für
(CEI 62271-211:2014) Bemessungsspannungen über 52 kV
(IEC 62271-211:2014)
This European Standard was approved by CENELEC on 2014-05-29. 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, Former Yugoslav Republic of Macedonia, 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.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2014 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 62271-211:2014 E
Foreword
The text of document 17C/596/FDIS, future edition 2 of IEC 62271-211, 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 62271-211:2014.
The following dates are fixed:
• latest date by which the document has (dop) 2015-02-28
to be implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2017-05-29
• latest date by which the national
standards conflicting with the
document have to be withdrawn
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 62271-211:2014 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 62271-209:2007 NOTE Harmonised in EN 62271-209:2007 (not modified).

- 3 - EN 62271-211:2014
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 1 When 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 60076 series Power transformers -- EN 60076 series
Part 1: General
IEC 60137 2008 Insulated bushings for alternating voltages EN 60137 2008
above 1 000 V
IEC 61936-1 - Power installations exceeding 1 kV a.c. -- EN 61936-1 -
Part 1: Common rules
IEC 62271-1 2007 High-voltage switchgear and controlgear -- EN 62271-1 2008
Part 1: Common specifications
IEC 62271-203 2011 High-voltage switchgear and controlgear -- EN 62271-203 2012
Part 203: Gas-insulated metal-enclosed
switchgear for rated voltages above 52 kV
IEC 62271-207 - High-voltage switchgear and controlgear -- EN 62271-207 -
Part 207: Seismic qualification for gas-
insulated switchgear assemblies for rated
voltages above 52 kV
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.
In the relevant CEN/CENELEC countries these A-deviations are valid instead of the provisions of the
European Standard until they have been removed.

Clause Deviation
5 Italy (Ministerial Decree of December 1, 1980 and September 10, 1981, published in the
Gazzetta Ufficiale No. 285, 1981-10-16).
Gas-filled compartments having a design pressure exceeding 0,5 bar (gauge) or a volume
exceeding 2000 litres shall be designed to the Italian pressure vessel code for electrical
switchgear.
IEC 62271-211 ®
Edition 1.0 2014-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
High-voltage switchgear and controlgear –

Part 211: Direct connection between power transformers and gas-insulated

metal-enclosed switchgear for rated voltages above 52 kV

Appareillage à haute tension –

Partie 211: Raccordements directs entre transformateurs de puissance et

appareillage sous enveloppe métallique à isolation gazeuse de tensions

assignées supérieures à 52 kV
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX S
ICS 29.130.10 ISBN 978-2-8322-1534-0

– 2 – IEC 62271-211:2014 © IEC 2014
CONTENTS
FOREWORD . 4
1 General . 6
1.1 Scope . 6
1.2 Normative references . 6
2 Normal and special service conditions . 7
2.1 Normal service conditions . 7
2.2 Special service conditions . 7
3 Terms and definitions . 7
4 Rating. 8
4.1 Rated voltage (U ) . 8
r
4.2 Rated insulation level . 8
4.3 Rated frequency (f ) . 9
r
4.4 Rated continuous current (I ) and temperature rise . 9
r
4.5 Rated short-time withstand current (I ) and rated thermal short-time
k
current (I ) . 9
th
4.6 Rated peak withstand current (I ) and rated dynamic current (I ) . 9
p d
4.7 Rated duration of short-circuit (t ) and rated duration (t ) . 9
k th
4.8 Rated filling pressure p of gas for insulation . 9
re
5 Design and construction . 10
5.1 Limits of supply . 10
5.2 Pressure withstand requirements . 11
5.3 Gas and vacuum tightness . 11
5.4 Mechanical forces applied on the connection interface . 12
5.5 Mechanical forces applied on the bushing flange . 12
5.6 Horizontal and vertical displacement . 13
5.7 Vibrations . 13
6 Type tests . 14
6.1 General . 14
6.2 Dielectric tests . 14
6.2.1 Dielectric tests of bushing . 14
6.2.2 Dielectric tests of transformer connection in a single phase
enclosure . 14
6.2.3 Dielectric tests of transformer connection in a three phase
enclosure . 14
6.3 Cantilever load withstand tests. 14
6.4 Gas tightness tests . 15
7 Routine tests . 15
7.1 General . 15
7.2 External pressure test of the bushing . 15
7.3 Tightness tests . 15
8 Standard dimensions and tolerances . 15
8.1 Single-phase direct connection between oil-filled transformer and
switchgear . 15
8.2 Three-phase direct connection between oil-filled transformer and

switchgear . 15
8.3 Connection between gas-insulated transformer and switchgear . 16

IEC 62271-211:2014 © IEC 2014 – 3 –
8.4 Transformer tolerances . 16
8.5 Mounting of the transformer on its foundation . 16
9 Information to be given with enquiries, tenders and orders . 16
10 Transport, storage, erection, operation and maintenance . 16
Bibliography . 21

Figure 1 – Typical direct connection between power transformer and gas-insulated
metal-enclosed switchgear . 17
Figure 2 – Standard dimensions for typical direct connection between power
transformer and gas-insulated metal-enclosed switchgear . 18
Figure 3 – Transformer tolerances for a typical direct connection shown on the
example of a three-phase power transformer connected to a single-phase gas-
insulated metal-enclosed switchgear . 19
Figure 4 – Transformer tolerances for a typical direct connection shown on the
example of a three-phase power transformer connected to a three-phase gas-insulated
metal
...