High-voltage switchgear and controlgear - Part 200: AC metal-enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV

IEC 62271-200:2021 is applicable to prefabricated metal‑enclosed switchgear and controlgear assemblies designed for:
– alternating current;
– rated voltages above 1 kV and up to and including 52 kV;
– service frequencies up to and including 60 Hz;
– indoor and outdoor installation.
The assembly can include air-insulated and/or fluid-filled compartments.
This third edition cancels and replaces the second edition published in 2011. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) clause numbering aligned with IEC 62271‑1:2017, including the adoption of the subclause names of Clause 3;
b) in Clause 3 specific definitions are added for "in service", "normal operating condition" and "normal use";
c) internal arc testing on pole-mounted switchgear is taken out of this document, as it is now covered by the specific standard IEC 62271‑214:2019;
d) a more precise description of earthing circuit is given with the inclusion of ratings and test requirements;
e) number of mechanical tests on interlocks is reduced for type testing; a more precise description of forces to apply during type testing is given (refer to 7.102);
f) resistance measuring on main circuit is only needed before continuous current tests (as reference for routine tests) and no longer needed after this continuous current test. Rationale for this deletion is that this measured resistance does not mean anything; as the temperature rise test was just finished, a new temperature rise test will not give new information;
g) IEC 62271-100:2021, IEC 62271-103:2021, IEC 62271-105:2021 and IEC 62271-106:2021 are referred to in the document;
h) IEC 62271‑107:2019 and IEC IEEE 62271‑37‑013:2015 are also considered in 7.101.2;
i) a more precise description of LSC category is given with the inclusion of an explanatory flowchart (Annex D);
j) examples not covered by the IAC test are transferred from Clause 6 to 9.103;
k) the term "assembly" is defined in Clause 3 and used as synonym for "metal-enclosed switchgear and controlgear" in this document;
l) "metallic" is replaced by "metal" where applicable;
m) 6.105 is now covered by 7.7;
n) a 1 s rule was introduced for Criterion 4 during IAC tests regarding hot gases versus glowing particles as cause of ignition;
o) a more precise description of internal arc tests for switchgear with protrusions is given in Annex A.

Appareillage à haute tension - Partie 200: Appareillage sous enveloppe métallique pour courant alternatif de tensions assignées supérieures à 1 kV et inférieures ou égales à 52 kV

L’IEC 62271-200:2021 est applicable aux ensembles d'appareillages préfabriqués sous enveloppe métallique conçus pour:
- le courant alternative;
- des tensions assignées supérieures à 1 kV et inférieures ou égales à 52 kV;
- des fréquences de service jusqu’à 60 Hz inclus;
- une installation à l'intérieur et à l'extérieur.
L’ensemble peut comprendre des compartiments isolés dans l’air et/ou remplis de fluide.
Cette troisième édition annule et remplace la deuxième édition publiée en 2011. Cette édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) numérotation des articles alignée sur l’IEC 62271‑1:2017, y compris l'adoption des noms des paragraphes de l’Article 3;
b) des définitions spécifiques sont ajoutées à l'Article 3 pour "en service", "condition normale de fonctionnement" et "utilisation normale";
c) l'essai d'arc interne sur les appareillages montés sur poteau est exclu du présent document, car il est maintenant couvert par la norme spécifique IEC 62271‑214:2019;
d) une description plus exacte du circuit de terre est donnée avec l'inclusion des valeurs assignées et des exigences d'essai;
e) réduction du nombre d'essais mécaniques sur les verrouillages pour les essais de type; meilleure description des forces à appliquer lors des essais de type (voir 7.102);
f) le mesurage de la résistance sur le circuit principal n'est nécessaire qu'avant les essais au courant permanent (comme référence pour les essais individuels de série) et n'est plus nécessaire après cet essai au courant permanent. La raison de cette suppression est que cette résistance mesurée ne signifie rien; comme l'essai d’échauffement vient de se terminer, un nouvel essai d’échauffement n’apporterait pas de nouvelles informations;
g) l’IEC 62271-100:2021, l’IEC 62271-103:2021, l’IEC 62271-105:2021 et l’IEC 62271‑106:2021 sont citées dans le present document;
h) l’IEC 62271‑107:2012 et l’IEC 62271‑37‑013:2015 sont également prises en considération en 7.101.2;
i) une description plus précise de la catégorie LSC est donnée avec l'inclusion d'un ordinogramme explicatif (Annexe D);
j) les exemples non couverts par l’essai IAC sont transférés de l’Article 6 au paragraphe 9.103;
k) le terme "ensemble" est défini à l'Article 3 et est utilisé comme synonyme d'"appareillage sous enveloppe métallique" dans le présent document;
l) "métallique" est remplacé par "en métal" le cas échéant;
m) le paragraphe 6.105 est maintenant couvert par le paragraphe 7.7;
n) une règle de 1 s a été introduite pour le Critère No 4 lors des essais IAC concernant les gaz chauds par rapport aux particules incandescentes comme cause d'amorçage;
o) une description plus précise des essais d'arc interne pour les appareillages avec des protubérances est donnée à l’Annexe A.
La présente version bilingue (2021-07) correspond à la version anglaise monolingue publiée en 2021-05.
La version française de cette norme n'a pas été soumise au vote.

General Information

Status
Published
Publication Date
26-May-2021
Technical Committee
Current Stage
PPUB - Publication issued
Completion Date
27-May-2021
Ref Project

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IEC 62271-200:2021 - High-voltage switchgear and controlgear - Part 200: AC metal-enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV
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IEC 62271-200
Edition 3.0 2021-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
High-voltage switchgear and controlgear –
Part 200: AC metal-enclosed switchgear and controlgear for rated voltages
above 1 kV and up to and including 52 kV
Appareillage à haute tension –
Partie 200: Appareillage sous enveloppe métallique pour courant alternatif de
tensions assignées supérieures à 1 kV et inférieures ou égales à 52 kV
IEC 62271-200:2021-05(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 62271-200
Edition 3.0 2021-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
High-voltage switchgear and controlgear –
Part 200: AC metal-enclosed switchgear and controlgear for rated voltages
above 1 kV and up to and including 52 kV
Appareillage à haute tension –
Partie 200: Appareillage sous enveloppe métallique pour courant alternatif de
tensions assignées supérieures à 1 kV et inférieures ou égales à 52 kV
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.130.10 ISBN 978-2-8322-1007-3

Warning! Make sure that you obtained this publication from an authorized distributor.

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® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – IEC 62271-200:2021  IEC 2021
CONTENTS

FOREWORD ........................................................................................................................... 6

INTRODUCTION ..................................................................................................................... 9

1 Scope ............................................................................................................................ 10

2 Normative references .................................................................................................... 10

3 Terms and definitions .................................................................................................... 11

3.1 General terms and definitions ............................................................................... 11

3.2 Assemblies of switchgear and controlgear ............................................................ 13

3.3 Parts of assemblies .............................................................................................. 13

3.4 Switching devices ................................................................................................. 13

3.5 Parts of switchgear and controlgear ...................................................................... 13

3.6 Operational characteristics of switchgear and controlgear ..................................... 16

3.7 Characteristic quantities ....................................................................................... 18

3.8 Index of definitions ................................................................................................ 19

4 Normal and special service conditions ........................................................................... 20

5 Ratings .......................................................................................................................... 21

5.1 General ................................................................................................................. 21

5.2 Rated voltage (U ) ................................................................................................ 21

5.3 Rated insulation level (U , U , U ) ....................................................................... 21

d p s

5.4 Rated frequency (f ) .............................................................................................. 21

5.5 Rated continuous current (I ) ................................................................................ 21

5.6 Rated short-time withstand currents (I , I ) ......................................................... 21

k ke

5.7 Rated peak withstand currents (I , I ) ................................................................ 22

p pe

5.8 Rated durations of short-circuit (t , t ) ................................................................ 22

k ke

5.9 Rated supply voltage of auxiliary and control circuits (U ) .................................... 23

5.10 Rated supply frequency of auxiliary and control circuits ........................................ 23

5.11 Rated pressure of compressed gas supply for controlled pressure systems .......... 23

5.101 Classification of earthing function through main switching device .......................... 23

5.102 Rated cable test voltages (U , U ) ..................................................... 23

ct (AC) ct (DC)

5.103 Ratings of the internal arc classification (IAC) ....................................................... 23

6 Design and construction ................................................................................................ 25

6.1 Requirements for liquids in switchgear and controlgear ......................................... 25

6.2 Requirements for gases in switchgear and controlgear ......................................... 25

6.3 Earthing of switchgear and controlgear ................................................................. 25

6.4 Auxiliary and control equipment and circuits ......................................................... 26

6.5 Dependent power operation .................................................................................. 26

6.6 Stored energy operation........................................................................................ 26

6.7 Independent unlatched operation (independent manual or power operation) ......... 26

6.8 Manually operated actuators ................................................................................. 26

6.9 Operation of releases............................................................................................ 26

6.10 Pressure/level indication ....................................................................................... 27

6.11 Nameplates .......................................................................................................... 27

6.12 Locking devices .................................................................................................... 28

6.13 Position indication ................................................................................................. 29

---------------------- Page: 4 ----------------------
IEC 62271-200:2021  IEC 2021 – 3 –

6.14 Degrees of protection provided by enclosures ....................................................... 29

6.15 Creepage distances for outdoor insulators ............................................................ 30

6.16 Gas and vacuum tightness .................................................................................... 30

6.17 Tightness for liquid systems .................................................................................. 30

6.18 Fire hazard (flammability) ..................................................................................... 30

6.19 Electromagnetic compatibility (EMC) ..................................................................... 30

6.20 X-ray emission ...................................................................................................... 30

6.21 Corrosion .............................................................................................................. 30

6.22 Filling levels for insulation, switching and/or operation .......................................... 30

6.101 General requirements for assemblies .................................................................... 31

6.102 Metal enclosure .................................................................................................... 31

6.103 High-voltage compartments .................................................................................. 33

6.104 Removable parts ................................................................................................... 37

6.105 Provisions for dielectric tests on cables ................................................................ 37

6.106 Internal arc fault .................................................................................................... 38

7 Type tests ..................................................................................................................... 38

7.1 General ................................................................................................................. 38

7.2 Dielectric tests ...................................................................................................... 39

7.3 Radio interference voltage (RIV) test .................................................................... 43

7.4 Resistance measurement ...................................................................................... 43

7.5 Continuous current tests ....................................................................................... 43

7.6 Short-time withstand current and peak withstand current tests .............................. 45

7.7 Verification of the protection ................................................................................. 47

7.8 Tightness tests ..................................................................................................... 47

7.9 Electromagnetic compatibility tests (EMC) ............................................................ 48

7.10 Additional tests on auxiliary and control circuits .................................................... 48

7.11 X-radiation test for vacuum interrupters ................................................................ 48

7.101 Verification of making and breaking capacities ...................................................... 48

7.102 Mechanical operation tests ................................................................................... 50

7.103 Pressure withstand test for gas-filled compartments ............................................. 51

7.104 Tests to verify the protection of persons against dangerous electrical effects ........ 52

7.105 Internal arc test ..................................................................................................... 53

8 Routine tests ................................................................................................................. 57

8.1 General ................................................................................................................. 57

8.2 Dielectric test on the main circuit .......................................................................... 57

8.3 Tests on auxiliary and control circuits ................................................................... 57

8.4 Measurement of the resistance of the main circuit ................................................. 58

8.5 Tightness test ....................................................................................................... 58

8.6 Design and visual checks ...................................................................................... 58

8.101 Partial discharge measurement ............................................................................. 58

8.102 Mechanical operation tests ................................................................................... 58

8.103 Pressure tests of gas-filled compartments ............................................................. 59

8.104 Tests after erection on site.................................................................................... 59

8.105 Measurement of fluid condition after filling on site ................................................. 59

9 Guide to the selection of switchgear and controlgear (informative) ................................ 59

9.1 General ................................................................................................................. 59

9.2 Selection of rated values ....................................................................................... 60

9.3 Cable-interface considerations .............................................................................. 60

---------------------- Page: 5 ----------------------
– 4 – IEC 62271-200:2021  IEC 2021

9.4 Continuous or temporary overload due to changed service conditions ................... 60

9.5 Environmental aspects .......................................................................................... 60

9.101 Selection of design and construction ..................................................................... 60

9.102 Ratings related to earthing circuits ........................................................................ 64

9.103 Internal arc fault .................................................................................................... 65

9.104 Summary of technical requirements, ratings and optional tests ............................. 71

10 Information to be given with enquiries, tenders and orders (informative) ........................ 73

10.1 General ................................................................................................................. 73

10.2 Information with enquiries and orders ................................................................... 73

10.3 Information with tenders ........................................................................................ 74

11 Transport, storage, installation, operating instructions and maintenance ....................... 75

11.1 General ................................................................................................................. 75

11.2 Conditions during transport, storage and installation ............................................. 75

11.3 Installation ............................................................................................................ 75

11.4 Operating instructions ........................................................................................... 75

11.5 Maintenance ......................................................................................................... 76

12 Safety ............................................................................................................................ 76

12.101 Procedures ........................................................................................................... 76

12.102 Internal arc aspects .............................................................................................. 76

13 Influence of the product on the environment .................................................................. 77

Annex A (normative) Internal arc fault – Method to verify the internal arc classification

(IAC) ..................................................................................................................................... 78

A.1 Room simulation ................................................................................................... 78

A.2 Indicators (for assessing the thermal effects of the gases) .................................... 80

A.3 Tolerances for geometrical dimensions of test arrangements ................................ 82

A.4 Test parameters .................................................................................................... 82

A.5 Test procedure...................................................................................................... 83

Annex B (normative) Partial discharge measurement ........................................................... 95

B.1 General ................................................................................................................. 95

B.2 Application ............................................................................................................ 95

B.3 Test circuits and measuring instruments ............................................................... 95

B.4 Test procedure...................................................................................................... 96

B.5 Maximum permissible partial discharge quantity ................................................... 97

Annex C (informative) List of notes concerning certain countries ....................................... 101

Annex D (normative) Flowchart categorization procedure for LSC for a given

functional unit FU1 with connection compartment ............................................................... 102

Bibliography ........................................................................................................................ 103

Figure 1 – LSC1.................................................................................................................... 63

Figure 2 – LSC2.................................................................................................................... 63

Figure 3 – LSC2.................................................................................................................... 63

Figure 4 – LSC2.................................................................................................................... 64

Figure 5 – LSC2A ................................................................................................................. 64

Figure 6 – LSC2B ................................................................................................................. 64

Figure 7 – LSC2B ................................................................................................................. 64

Figure 8 – LSC1.................................................................................................................... 64

---------------------- Page: 6 ----------------------
IEC 62271-200:2021  IEC 2021 – 5 –

Figure 9 – No LSC assigned ................................................................................................. 64

Figure A.1 – Mounting frame for vertical indicators ............................................................... 86

Figure A.2 – Horizontal indicator ........................................................................................... 86

Figure A.3 – Position of the indicators................................................................................... 87

Figure A.4 – Room simulation and indicator positioning for accessibility type A,

classified rear side, ceiling above 2 000 mm, functional unit of any height ............................ 88

Figure A.5 – Room simulation and indicator positioning for accessibility type A,

non-accessible rear side, ceiling at 2 000 mm, so functional unit ≤ 1 800 mm high................ 89

Figure A.6 – Room simulation and indicator positioning for accessibility type B,

classified rear side, functional unit ≥ 1 900 mm high ............................................................. 90

Figure A.7 – Room simulation and indicator positioning for accessibility type B,

classified rear side, functional unit < 1 900 mm high ............................................................. 91

Figure A.8 – Ceiling height stated from the floor or false floor level where the assembly

is actually placed .................................................................................................................. 92

Figure A.9 – Indicator positioning in case of protrusion at < 2 000 mm height, at

classified side ....................................................................................................................... 93

Figure A.10 – Indicator positioning in case a bottom exhaust duct belonging to the

assembly is defined as a walkable integrated part of the false floor ...................................... 94

Figure B.1 – Partial discharge test circuit (three-phase arrangement) ................................... 99

Figure B.2 – Partial-discharge test circuit (system without earthed neutral) ......................... 100

Figure D.1 – Flowchart categorization procedure for LSC for a given functional unit

FU1 with connection compartment ...................................................................................... 102

Table 1 – Nameplate information .......................................................................................... 27

Table 2 – Locations, causes and examples of measures to decrease the probability of

internal arc faults .................................................................................................................. 67

Table 3 – Single-phase-to-earth arc fault current depending on the network neutral

earthing ................................................................................................................................ 69

Table 4 – Summary of technical requirements, ratings and optional tests for

assemblies ........................................................................................................................... 71

Table A.1 – Parameters for internal arc test according to compartment construction ............. 85

Table B.1 – Test circuits and procedures .............................................................................. 98

---------------------- Page: 7 ----------------------
– 6 – IEC 62271-200:2021  IEC 2021
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR –
Part 200: AC metal-enclosed switchgear and controlgear
for rated voltages above 1 kV and up to and including 52 kV
FOREWORD

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IEC 62271-200 has been prepared by subcommittee 17C: Assemblies, of IEC technical

committee 17: High-voltag
...

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