IEC 62271-204:2011

IEC 62271-204 ®
Edition 1.0 2011-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
High-voltage switchgear and controlgear –
Part 204: Rigid gas-insulated transmission lines for rated voltage above 52 kV

Appareillage à haute tension –
Partie 204: Lignes de transport rigides à isolation gazeuse de tension assignée
supérieure à 52 kV
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IEC 62271-204 ®
Edition 1.0 2011-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
High-voltage switchgear and controlgear –
Part 204: Rigid gas-insulated transmission lines for rated voltage above 52 kV

Appareillage à haute tension –
Partie 204: Lignes de transport rigides à isolation gazeuse de tension assignée
supérieure à 52 kV
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX XA
ICS 29.130.10 ISBN 978-2-88912-604-0

– 2 – 62271-204  IEC:2011
CONTENTS
FOREWORD . 5
1 General . 7
1.1 Scope . 7
1.2 Normative references . 7
2 Normal and special service conditions . 8
2.101 Installation in open air . 8
2.102 Buried installation . 9
2.103 Installation in tunnel, shaft or similar situation . 9
3 Terms and definitions . 9
4 Ratings . 11
4.1 Rated voltage (U ) . 11
r
4.2 Rated insulation level . 11
4.3 Rated frequency (f ) . 11
r
4.4 Rated normal current and temperature rise . 11
4.5 Rated short-time withstand current (I ) . 12
k
4.6 Rated peak withstand current (I ) . 12
p
4.7 Rated duration of short circuit (t ) . 12
k
4.8 Rated supply voltage of closing and opening devices and of auxiliary and
control circuits (U ) . 12
a
4.9 Rated supply frequency of closing and opening devices and of auxiliary
circuits . 12
4.10 Rated pressure of compressed gas supply for controlled pressure systems . 13
4.11 Rated filling levels for insulation and/or operation . 13
5 Design and construction . 13
5.1 Requirements for liquids in GIL . 13
5.2 Requirements for gases in GIL . 13
5.3 Earthing . 13
5.4 Auxiliary and control equipment . 14
5.5 Dependent power operation . 14
5.6 Stored energy operation . 14
5.7 Independent manual or power operation (independent unlatched operation) . 14
5.8 Operation of releases . 14
5.9 Low- and high-pressure interlocking and monitoring devices . 14
5.10 Nameplates . 15
5.11 Interlocking devices . 15
5.12 Position indication. 16
5.13 Degree of protection provided by enclosures . 16
5.14 Creepage distances for outdoor insulators . 16
5.15 Gas and vacuum tightness . 16
5.16 Liquid tightness . 17
5.17 Fire hazard (flammability) . 17
5.18 Electromagnetic compatibility (EMC) . 17
5.19 X-ray emission . 17
5.20 Corrosion . 17
5.101 Internal fault . 18
5.102 Enclosures . 19

62271-204  IEC:2011 – 3 –
5.103 Partitions and partitioning . 20
5.104 Sections of a GIL system . 21
5.105 Pressure relief . 21
5.106 Compensation of thermal expansion . 22
5.107 External vibration . 22
5.108 Supporting structures for non-buried GIL . 22
6 Type tests . 23
6.1 General . 23
6.2 Dielectric tests . 24
6.3 Radio interference voltage (r.i.v.) test . 26
6.4 Measurement of the resistance of circuits . 26
6.5 Temperature-rise tests. 26
6.6 Short-time withstand current and peak withstand current tests. 26
6.7 Verification of the protection . 27
6.8 Tightness tests . 27
6.9 Electromagnetic compatibility tests (EMC) . 28
6.10 Additional test on auxiliary and control circuits . 28
6.11 X-radiation test procedure for vacuum interrupters . 28
6.101 Proof tests for enclosures . 28
6.102 Destructive pressure tests . 28
6.103 Anti-corrosion tests for buried installation . 28
6.104 Special mechanical test on sliding contacts . 29
6.105 Test under conditions of arcing due to internal fault . 30
6.106 Weatherproofing test . 31
7 Routine tests . 31
7.1 Dielectric tests on the main circuits . 31
7.2 Dielectric tests on auxiliary and control circuits . 31
7.3 Measurement of the resistance of the main circuit . 31
7.4 Tightness test . 31
7.5 Design and visual checks. 31
7.101 Partial discharge measurement .
...