EN 62271-211:2014

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 is applicable to single and three phase direct connections between gas-insulated metal-enclosed switchgear (GIS) for rated voltages above 52 kV and transformer arrangements to establish electrical and mechanical interchange ability and to determine the limits of supply of for the transformer connection. This first edition cancels and replaces the first edition of IEC TR 61639:1996 and constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) transfer from technical report to international standard; b) the minimum voltage rating was changed from 72,5 kV to above 52 kV; c) update of normative references; d) definition of insulated junction including limit of supply; e) definition of dielectric test of gas-insulated metal-enclosed switchgear for transformer connection in a three phase enclosure; f) addition of interface tolerances at transformer side; g) addition of transformer tolerances in service; h) addition of exceptional loads for bushings and flanges; i) consideration of oil- and gas-insulated transformers; j) inclusion of three-phase enclosed direct connections.

Hochspannungs-Schaltgeräte und -Schaltanlagen - Teil 211: Direkte Verbindungen zwischen Leistungstransformatoren und gasisolierten metallgekapselten Schaltanlagen für Bemessungsspannungen über 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

L'IEC 62271-211:2014 est applicable aux raccordements directs monophasés et triphasés entre l'appareillage sous enveloppe métallique à isolation gazeuse (GIS) pour des tensions assignées supérieures à 52 kV et des dispositions de transformateurs pour établir des possibilités d'échanges électriques et mécaniques et pour déterminer les limites d'alimentation pour le raccordement du transformateur. Cette première édition annule et remplace la première édition de l'IEC TR 61639:1996. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: a) passage de l'état de rapport technique à l'état de norme internationale; b) la caractéristique assignée de tension minimale passe de 72,5 kV à au-dessus de 52 kV; c) mise à jour des références normatives; d) définition de la jonction isolée incluant la limite d'alimentation; e) définition de l'essai diélectrique de l'appareillage sous enveloppe métallique à isolation gazeuse pour le raccordement du transformateur dans une enveloppe triphasée; f) ajout des tolérances d'interface du côté du transformateur; g) ajout des tolérances du transformateur en service; h) ajout de charges exceptionnelles pour les traversées et les brides; i) prise en considération des transformateurs à isolation à huile et gazeuse; j) inclusion des raccordements directs triphasés sous enveloppe.

Visokonapetostne stikalne in krmilne naprave - 211. del: Neposredna povezava med elektroenergetskimi transformatorji in plinsko izoliranimi stikalnimi napravami v kovinskih ohišjih za naznačene napetosti nad 52 kV (IEC 62271-211:2014)

Standard EN IEC 62271-9 se uporablja za enofazne in trifazne neposredne povezave med plinsko izoliranimi stikalnimi napravami v kovinskih ohišjih (GIS) za naznačene napetosti nad 52 kV in transformatorskimi sestavi, da se ugotovi sposobnost električne in mehanske izmenjave ter določijo omejitve napajanja za transformatorsko povezavo. Neposredne povezave so na enem koncu potopljene v transformatorsko olje ali izolirni plin ter na drugi strani v izolirni plin stikalne naprave. Transformatorski sestavi so enofazni transformatorji z enofaznim vgrajenim sestavom, trifazni transformatorji s tremi enofaznimi vgrajenimi sestavi ali trifazni transformatorji s trifaznim vgrajenim sestavom s tremi transformatorskimi skoznjiki. Povezava izpolnjuje zahteve standarda IEC 62271-203 za plinsko izolirane stikalne naprave v kovinskih ohišjih, standarda IEC 60076 za elektroenergetske transformatorje in standarda IEC 60137 za popolnoma potopljene skoznjike. Za namene tega mednarodnega standarda se za »plinsko izolirane stikalne naprave v kovinskih ohišjih« uporablja izraz »stikalne naprave«.

General Information

• Status: Published
• Publication Date: 05-Jun-2014
• Withdrawal Date: 28-May-2017
• ICS: 29.130.10 - High voltage switchgear and controlgear
• Technical Committee: CLC/TC 17AC - High-voltage switchgear and controlgear
• Drafting Committee: IEC/SC 17C - IEC_SC_17C
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 06-Jun-2014
• Completion Date: 06-Jun-2014
• Ref Project: SIST EN 62271-211:2014 - High-voltage switchgear and controlgear - Part 211: Direct connection between power transformers and gas-insulated metal-enclosed switchgear for rated voltages above 52 kV

Relations

• Replaced By: EN IEC 62271-211:2024 - High-voltage switchgear and controlgear - Part 211: Direct connection between power transformers and gas-insulated metal-enclosed switchgear for rated voltages above 52 kV
• Effective Date: 08-Feb-2022
• Corrected By: EN 62271-211:2014/AC:2017-09 - High-voltage switchgear and controlgear - Part 211: Direct connection between power transformers and gas-insulated metal-enclosed switchgear for rated voltages above 52 kV
• Effective Date: 23-Jan-2023
• Corrected By: EN 62271-211:2014/AC:2015 - High-voltage switchgear and controlgear - Part 211: Direct connection between power transformers and gas-insulated metal-enclosed switchgear for rated voltages above 52 kV
• Effective Date: 18-Aug-2015

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2014
9LVRNRQDSHWRVWQHVWLNDOQHLQNUPLOQHQDSUDYHGHO1HSRVUHGQDSRYH]DYD
PHGHOHNWURHQHUJHWVNLPLWUDQVIRUPDWRUMLLQSOLQVNRL]ROLUDQLPLVWLNDOQLPL
QDSUDYDPLYNRYLQVNLKRKLãMLK]DQD]QDþHQHQDSHWRVWLQDGN9,(&

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
...