EN IEC 62271-211:2024

SLOVENSKI STANDARD
oSIST prEN IEC 62271-211:2023
01-september-2023
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
High-voltage switchgear and controlgear - Part 211: Direct connection between power
transformers and gas-insulated metal-enclosed switchgear for rated voltages above 52
kV
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 tension
assignée supérieure à 52 kV
Ta slovenski standard je istoveten z: prEN IEC 62271-211:2023
ICS:
29.130.10 Visokonapetostne stikalne in High voltage switchgear and
krmilne naprave controlgear
oSIST prEN IEC 62271-211:2023 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN IEC 62271-211:2023
oSIST prEN IEC 62271-211:2023
17C/901/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 62271-211 ED2
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2023-07-21 2023-10-13
SUPERSEDES DOCUMENTS:
17C/879/CD, 17C/894/CC
IEC SC 17C : ASSEMBLIES
SECRETARIAT: SECRETARY:
Germany Mr Mark Kuschel
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:

TC 14,TC 17,SC 17A,SC 36A
Other TC/SCs are requested to indicate their interest, if
any, in this CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY
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CENELEC, is drawn to the fact that this Committee Draft
for Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
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the final stage for submitting ISC clauses. (SEE AC/22/2007 OR NEW GUIDANCE DOC).

TITLE:
High-voltage switchgear and controlgear - Part 211: Direct connection between power
transformers and gas-insulated metal-enclosed switchgear for rated voltages above 52 kV

PROPOSED STABILITY DATE: 2032
NOTE FROM TC/SC OFFICERS:
download this electronic file, to make a copy and to print out the content for the sole purpose of preparing National
Committee positions. You may not copy or "mirror" the file or printed version of the document, or any part of it,
for any other purpose without permission in writing from IEC.

oSIST prEN IEC 62271-211:2023
IEC CDV 62271-211 © IEC 2023 2 17C/901/CDV
1 CONTENTS
3 FOREWORD. 4
4 1 Scope . 7
5 2 Normative references . 7
6 3 Terms and definitions . 7
7 4 Normal and special service conditions . 9
8 4.1 Normal service conditions . 9
9 4.2 Special service conditions . 9
10 5 Ratings . 10
11 5.1 General . 10
12 5.2 Rated voltage (U ) . 10
r
13 5.3 Rated insulation level (Ud, Up, Us) . 10
14 5.4 Rated frequency (f ) . 10
r
15 5.5 Rated continuous current (I ) . 10
r
16 5.6 Rated short-time withstand current (I ) and rated thermal short-time
k
17 current (I ) . 10
th
18 5.7 Rated peak withstand current (I ) and rated dynamic current (I ) . 11
p d
19 5.8 Rated duration of short-circuit (t ) and of thermal short-time current (t ) . 11
k th
20 6 Design and construction . 11
21 6.1 Gas and vacuum tightness . 11
22 6.2 Gas pressure for insulation of the bushing inside the GIS enclosure . 11
23 6.3 Pressure withstands requirements . 11
24 6.4 Standard dimensions and tolerances . 12
25 6.4.1 General . 12
26 6.4.2 Single-phase direct connection between oil-filled transformer
27 and switchgear . 12
28 6.4.3 Three-phase direct connection between oil-filled transformer
29 and switchgear . 12
30 6.4.4 Connection between gas-insulated transformer and
31 switchgear . 12
32 6.4.5 Transformer tolerances . 12
33 6.4.6 Mounting of the transformer on its foundation . 12
34 6.5 Limits of supply . 13
35 6.6 Mechanical forces applied on the connection interface . 14
36 6.7 Mechanical forces applied on the bushing flange . 14
37 6.8 Horizontal and vertical displacement . 16
38 6.9 Vibrations . 16
39 7 Type tests . 16
40 7.1 General . 16
41 7.2 Dielectric tests . 16
42 7.2.1 Dielectric tests of bushing . 16
43 7.2.2 Dielectric tests of transformer connection in a single-phase
44 enclosure . 17
45 7.2.3 Dielectric tests of transformer connection in a three-phase
46 enclosure . 17
47 7.3 Cantilever loads withstand tests . 17
48 7.4 Gas tightness tests . 17
49 8 Routine tests . 17

oSIST prEN IEC 62271-211:2023
IEC CDV 62271-211 © IEC 2023 3 17C/901/CDV
50 8.1 General . 17
51 8.2 External pressure test of the bushing . 17
52 8.3 Tightness tests . 18
53 9 Guide to the selection of switchgear and controlgear (informative) . 18
54 10 Information to be given with enquiries, tenders and orders (informative) . 18
55 11 Transport, storage, installation, operating instructions and maintenance . 18
56 12 Safety . 18
57 13 Environmental aspects . 18
58 Bibliography . 23
60 Figure 1 – Typical direct connection between power transformer and gas-insulated
61 metal-enclosed switchgear . 19
62 Figure 2 – Standard dimensions for typical direct connection between power
63 transformer and gas-insulated metal-enclosed switchgear . 20
64 Figure 3 – Transformer tolerances for a typical direct connection shown on the
65 example of a three-phase power transformer connected to a single-phase gas-
66 insulated metal-enclosed switchgear . 21
67 Figure 4 – Transformer tolerances for a typical direct connection shown on the
68 example of a three-phase power transformer connected to a three-phase gas-insulated
69 metal-enclosed switchgear up to 170 kV . 22
71 Table 1 – Moments and forces applied on the bushing flange and transformer . 15
oSIST prEN IEC 62271-211:2023
IEC CDV 62271-211 © IEC 2023 4 17C/901/CDV
74 INTERNATIONAL ELECTROTECHNICAL COMMISSION
75 ____________
77 HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR –
79 Part 211: Direct connection between power transformers and gas-
80 insulated metal-enclosed switchgear for rated voltages above 52 kV
82 FOREWORD
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115 International Standard IEC 62271-211 has been prepared by subcommittee 17C: High-voltage
116 switchgear
...