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IEC 62271-104
Edition 3.0 2020-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
High-voltage switchgear and controlgear –
Part 104: Alternating current switches for rated voltages higher than 52 kV
Appareillage à haute tension –
Partie 104: Interrupteurs à courant alternatif pour tensions assignées
supérieures à 52 kV
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IEC 62271-104
Edition 3.0 2020-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
High-voltage switchgear and controlgear –
Part 104: Alternating current switches for rated voltages higher than 52 kV
Appareillage à haute tension –
Partie 104: Interrupteurs à courant alternatif pour tensions assignées
supérieures à 52 kV
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.130.10; 29.130.99 ISBN 978-2-8322-8609-8
– 2 – IEC 62271-104:2020 © IEC 2020
CONTENTS
FOREWORD . 5
1 Scope . 7
2 Normative references . 8
3 Terms and definitions . 8
3.1 General terms and definitions . 8
3.2 Assemblies . 8
3.3 Parts of assemblies . 9
3.4 Switching devices . 9
3.5 Parts of switches . 10
3.6 Operational characteristics of switches . 10
3.7 Characteristic quantities . 10
4 Normal and special service conditions . 12
5 Ratings . 12
5.1 General . 12
5.2 Rated voltage (U ) . 12
r
5.3 Rated insulation level (U , U , U ) . 12
d p s
5.4 Rated frequency (f ) . 12
r
5.5 Rated continuous current (I ) . 12
r
5.6 Rated short-time withstand current (I ) . 12
k
5.7 Rated peak withstand current (I ) . 13
p
5.8 Rated duration of short-circuit (t ) . 13
k
5.9 Rated supply voltage of auxiliary and control circuits (U ) . 13
a
5.10 Rated supply frequency of auxiliary and control circuits . 13
5.11 Rated pressure of compressed gas supply for controlled pressure systems . 13
5.101 Rated earth fault breaking current . 13
5.102 Rated short-circuit making current . 13
5.103 Rated mainly active load-breaking current . 13
5.104 Rated closed-loop breaking current . 13
5.105 Rated capacitive switching currents . 13
5.106 Inductive load switching . 14
5.107 Rated static mechanical terminal load . 15
5.108 Coordination of rated values for a general purpose switch . 15
5.109 Coordination of rated values for limited purpose and special purpose
switches . 15
6 Design and construction . 16
6.1 Requirements for liquids in high-voltage switches . 16
6.2 Requirements for gases in high-voltage switches . 16
6.3 Earthing of high-voltage switches . 16
6.4 Auxiliary and control equipment and circuits . 16
6.5 Dependent power operation . 16
6.6 Stored energy operation . 16
6.7 Independent unlatched operation (independent manual or power operation) . 16
6.8 Manually operated actuators . 16
6.9 Operation of releases . 16
6.10 Pressure/level indication . 16
6.11 Nameplates. 16
6.12 Locking devices . 17
6.13 Position indication . 18
6.14 Degree of protection provided by enclosures . 18
6.15 Creepage distances for outdoor insulators . 18
6.16 Gas and vacuum tightness . 18
6.17 Tightness for liquid systems . 18
6.18 Fire hazard (flammability) . 18
6.19 Electromagnetic compatibility (EMC) . 18
6.20 X-ray emission . 18
6.21 Corrosion . 18
6.22 Filling levels for insulation, switching and/or operation . 18
6.101 Closing mechanism . 18
6.102 Mechanical strength . 18
6.103 Position of the movable contact system and its indicating or signalling device . 18
7 Type tests . 19
7.1 General . 19
7.2 Dielectric tests . 20
7.3 Radio interference voltage (RIV) tests . 21
7.4 Resistance measurement . 21
7.5 Continuous current tests . 21
7.6 Short-time withstand current and peak withstand current tests . 21
7.7 Verification of the protection . 21
7.8 Tightness tests . 21
7.9 Electromagnetic compatibility tests (EMC) . 21
7.10 Additional tests on auxiliary and control circuits . 21
7.11 X-radiation test for vacuum interrupters . 21
7.101 Mechanical operatio
...