High-voltage switchgear and controlgear - Part 201: AC solid-insulation enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV

IEC 62271-201:2014 specifies requirements for prefabricated solid-insulation enclosed switchgear and controlgear for alternating current of rated voltages above 1 kV and up to and including 52 kV for indoor installation and for service frequencies up to and including 60 Hz. This second edition cancels and replaces the first edition, published in 2006. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) apart from updating with the second edition of IEC 62271-200 (issued in 2011), definitions, classifications and testing procedures have been specified more precisely;
b) access to the solid-insulation enclosed switchgear and controlgear is now restricted to authorized personnel only. This implies that "accessibility class B" (public access) has been deleted throughout the document;
c) the term "protection category" has been introduced to replace the term "protection grade" (PA, PB1 and PB2).
This publication is to be read in conjunction with IEC 62271-201:2007.

Appareillage à haute tension - Partie 201: Appareillage sous enveloppe isolante solide pour courant alternatif de tensions assignées supérieures à 1 kV et inférieures ou égales à 52 kV

L'IEC 62271-201:2014 spécifie les exigences pour l'appareillage préfabriqué sous enveloppe isolante solide pour courant alternatif, prévu pour être installé à l'intérieur, pour des tensions assignées supérieures à 1 kV et inférieures ou égales à 52 kV et pour des fréquences de service inférieures ou égales à 60 Hz. Cette deuxième édition annule et remplace la première édition, parue en 2006. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) outre la mise à jour de la deuxième édition de l'IEC 62271-200 (parue en 2011), les définitions, classifications et procédures d'essai ont été spécifiées de manière plus précise;
b) l'accès aux appareillages sous enveloppe isolante solide est désormais limité au seul personnel autorisé. Ceci signifie la suppression de la "classe d'accessibilité B" (accès par le public) dans l'ensemble du document;
c) le terme "catégorie de protection" a été introduit afin de remplacer le terme "classe de protection" (PA, PB1 et PB2).
Cette publication doit être lue conjointement avec la CEI 62271-201:2007.

General Information

Status
Published
Publication Date
26-Mar-2014
Technical Committee
Current Stage
PPUB - Publication issued
Start Date
27-Mar-2014
Completion Date
27-Mar-2014
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IEC 62271-201:2014 - High-voltage switchgear and controlgear - Part 201: AC solid-insulation enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV
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IEC 62271-201
Edition 2.0 2014-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
High-voltage switchgear and controlgear –
Part 201: AC solid-insulation enclosed switchgear and controlgear for rated
voltages above 1 kV and up to and including 52 kV
Appareillage à haute tension –
Partie 201: Appareillage sous enveloppe isolante solide pour courant alternatif
de tensions assignées supérieures à 1 kV et inférieures ou égales à 52 kV
IEC 62271-201:2014-03(en-fr)
---------------------- Page: 1 ----------------------
THIS PUBLICATION IS COPYRIGHT PROTECTED
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---------------------- Page: 2 ----------------------
IEC 62271-201
Edition 2.0 2014-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
High-voltage switchgear and controlgear –
Part 201: AC solid-insulation enclosed switchgear and controlgear for rated
voltages above 1 kV and up to and including 52 kV
Appareillage à haute tension –
Partie 201: Appareillage sous enveloppe isolante solide pour courant alternatif
de tensions assignées supérieures à 1 kV et inférieures ou égales à 52 kV
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX XD
ICS 29.130.10 ISBN 978-2-8322-1482-4

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

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – IEC 62271-201:2014 © IEC 2014
CONTENTS

FOREWORD ........................................................................................................................... 8

1 General ......................................................................................................................... 10

1.1 Scope .............................................................................................................. 10

1.2 Normative references ....................................................................................... 10

2 Normal and special service conditions ........................................................................... 11

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

3.1 Index of definitions ........................................................................................... 19

4 Ratings .......................................................................................................................... 21

4.1 Rated voltage (U ) ........................................................................................... 21

4.1.2 Range II for rated voltages above 245 kV ....................................... 21

4.2 Rated insulation level ....................................................................................... 22

4.3 Rated frequency (f ) ......................................................................................... 22

4.4 Rated normal current and temperature rise ...................................................... 22

4.4.1 Rated normal current (I ) ................................................................ 22

4.4.2 Temperature rise ............................................................................ 22

4.5 Rated short-time withstand current (I ) ............................................................ 22

4.5.101 Rated short-time withstand current (I ) ........................................... 22

4.5.102 Rated short-time phase to earth withstand current (I ) .................. 22

4.6 Rated peak withstand current (I ) .................................................................... 22

4.6.101 Rated peak withstand current (I ) ................................................... 23

4.6.102 Rated peak phase to earth withstand current (I ) .......................... 23

4.7 Rated duration of short circuit (t ) .................................................................... 23

4.7.101 Rated duration of short circuit (t ) ................................................... 23

4.7.102 Rated duration of phase to earth short circuit (t ) ......................... 23

4.8 Rated supply voltage of closing and opening devices and of auxiliary and

control circuits (U ) .......................................................................................... 23

4.9 Rated supply frequency of closing and opening devices and of auxiliary

circuits ............................................................................................................. 23

4.10 Rated pressure of compressed gas supply for controlled pressure

systems ........................................................................................................... 23

4.11 Rated filling levels for insulation and/or operation ............................................ 23

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

4.101.1 General .......................................................................................... 23

4.101.2 Types of accessibility...................................................................... 23

4.101.3 Classified sides .............................................................................. 24

4.101.4 Rated arc fault currents (I , I ) .................................................... 24

A Ae

4.101.5 Rated arc fault duration (t , t ) .................................................... 24

A Ae

4.102 Rated cable test voltages ................................................................................. 24

4.102.1 General .......................................................................................... 24

4.102.2 Rated power-frequency cable test voltage U (a.c.) ....................... 25

4.102.3 Rated d.c. cable test voltage U (d.c.) ........................................... 25

5 Design and construction ................................................................................................ 25

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

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

5.3 Earthing of switchgear and controlgear ............................................................ 26

5.3.101 Earthing of the high-voltage conductive parts ................................. 26

5.3.102 Earthing of the enclosure ................................................................ 26

---------------------- Page: 4 ----------------------
IEC 62271-201:2014 © IEC 2014 – 3 –

5.3.103 Earthing of earthing devices ........................................................... 26

5.3.104 Earthing of withdrawable and removable parts ................................ 26

5.3.105 Earthing circuit ............................................................................... 26

5.4 Auxiliary and control equipment ....................................................................... 27

5.5 Dependent power operation ............................................................................. 27

5.6 Stored energy operation ................................................................................... 27

5.7 Independent manual or power operation (independent unlatched

operation) ........................................................................................................ 27

5.8 Operation of releases ....................................................................................... 27

5.9 Low- and high-pressure interlocking and monitoring devices ............................ 27

5.10 Nameplates...................................................................................................... 27

5.11 Interlocking devices ......................................................................................... 29

5.12 Position indication ............................................................................................ 29

5.13 Degrees of protection by enclosures ................................................................ 30

5.13.1 Protection of persons against access to hazardous parts and
protection of the equipment against ingress of solid foreign

objects (IP coding) .......................................................................... 30

5.13.2 Protection against ingress of water (IP coding) ............................... 30

5.13.3 Protection of equipment against mechanical impact under

normal service conditions (IK coding) ............................................. 30

5.14 Creepage distances for outdoor insulators ....................................................... 30

5.15 Gas and vacuum tightness ............................................................................... 30

5.16 Liquid tightness ................................................................................................ 30

5.17 Fire hazard (flammability) ................................................................................ 30

5.18 Electromagnetic compatibility (EMC) ................................................................ 30

5.19 X-ray emission ................................................................................................. 30

5.20 Corrosion ......................................................................................................... 30

5.101 Internal arc fault ............................................................................................... 31

5.102 Solid insulating enclosure ................................................................................ 31

5.102.1 General .......................................................................................... 31

5.102.2 Protection category of the solid insulating enclosure against

electric shock ................................................................................. 31

5.102.3 Requirements for protection categories........................................... 32

5.102.4 Covers and doors ........................................................................... 33

5.102.5 Partition or shutter being part of the enclosure ............................... 33

5.102.6 Inspection windows......................................................................... 34

5.102.7 Ventilating openings, vent outlets ................................................... 34

5.103 High-voltage compartments.............................................................................. 34

5.103.1 General .......................................................................................... 34

5.103.2 Fluid-filled compartments (gas or liquid) ......................................... 35

5.103.3 Partitions and shutters .................................................................... 36

5.104 Removable parts .............................................................................................. 37

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

6 Type tests ..................................................................................................................... 37

6.1 General ............................................................................................................ 37

6.1.1 Grouping of tests ............................................................................ 38

6.1.2 Information for identification of specimens ...................................... 39

6.1.3 Information to be included in type-test reports ................................ 39

6.2 Dielectric tests ................................................................................................. 39

6.2.1 Ambient air conditions during tests ................................................. 39

---------------------- Page: 5 ----------------------
– 4 – IEC 62271-201:2014 © IEC 2014

6.2.2 Wet test procedure ......................................................................... 39

6.2.3 Conditions of switchgear and controlgear during dielectric

tests ............................................................................................... 39

6.2.4 Criteria to pass the test .................................................................. 39

6.2.5 Application of the test voltage and test conditions ........................... 39

6.2.6 Tests of switchgear and controlgear of U ≤ 245 kV ........................ 40

6.2.7 Tests of switchgear and controlgear of U >245 kV ......................... 41

6.2.8 Artificial pollution tests for outdoor insulators .................................. 41

6.2.9 Partial discharge tests .................................................................... 41

6.2.10 Dielectric tests on auxiliary and control circuits ............................... 42

6.2.11 Voltage test as condition check ...................................................... 42

6.2.101 Dielectric tests on cable testing circuits .......................................... 42

6.3 Radio interference voltage (r.i.v.) test .............................................................. 43

6.4 Measurement of the resistance of circuits ........................................................ 43

6.4.1 Main circuit ..................................................................................... 43

6.4.2 Auxiliary circuits ............................................................................. 43

6.4.101 Requirement for protection category PB2 ........................................ 43

6.5 Temperature-rise tests ..................................................................................... 43

6.5.1 Conditions of the switchgear and controlgear to be tested .............. 44

6.5.2 Arrangement of the equipment ........................................................ 44

6.5.3 Measurement of the temperature and the temperature rise ............. 44

6.5.4 Ambient air temperature ................................................................. 44

6.5.5 Temperature-rise test of the auxiliary and control equipment .......... 44

6.5.6 Interpretation of the temperature-rise tests ..................................... 44

6.6 Short-time withstand current and peak withstand current tests ......................... 44

6.6.1 Arrangement of the switchgear and controlgear and of the test

circuit ............................................................................................. 45

6.6.2 Test current and duration ................................................................ 46

6.6.3 Behaviour of switchgear and controlgear during test ....................... 46

6.6.4 Condition of switchgear and controlgear after test .......................... 46

6.7 Verification of the protection ............................................................................ 46

6.7.1 Verification of the IP coding ............................................................ 46

6.7.2 Verification of the IK coding ............................................................ 46

6.8 Tightness tests ................................................................................................ 46

6.9 Electromagnetic compatibility tests (EMC) ....................................................... 46

6.10 Additional tests on auxiliary and control circuits ............................................... 46

6.10.1 General .......................................................................................... 46

6.10.2 Functional tests .............................................................................. 46

6.10.3 Electrical continuity of earthed metallic parts test ........................... 46

6.10.4 Verification of the operational characteristics of auxiliary

contacts .......................................................................................... 47

6.10.5 Environmental tests ........................................................................ 47

6.10.6 Dielectric test ................................................................................. 47

6.11 X-radiation test procedures for vacuum interrupters ......................................... 47

6.101 Verification of making and breaking capacities ................................................. 47

6.101.1 General .......................................................................................... 47

6.101.2 Test requirements for main switching devices ................................. 48

6.101.3 Test requirements for earthing function ........................................... 48

6.102 Mechanical operation tests .............................................................................. 48

6.102.1 Switching devices and removable parts .......................................... 48

---------------------- Page: 6 ----------------------
IEC 62271-201:2014 © IEC 2014 – 5 –

6.102.2 Interlocks ........................................................................................ 49

6.103 Pressure withstand test for gas-filled compartments......................................... 50

6.103.1 Pressure withstand test for gas-filled compartments with

pressure relief devices .................................................................... 50

6.103.2 Pressure withstand test for gas-filled compartments without

pressure relief devices .................................................................... 50

6.104 Tests to prove the protection of persons against electric shock ........................ 50

6.104.1 General .......................................................................................... 50

6.104.2 Dielectric tests ................................................................................ 50

6.104.3 Measurements of leakage currents ................................................. 51

6.105 Internal arcing test ........................................................................................... 51

6.105.1 General .......................................................................................... 51

6.105.2 Test conditions ............................................................................... 52

6.105.3 Arrangement of the equipment ........................................................ 53

6.105.4 Test procedure ............................................................................... 53

6.105.5 Criteria to pass the test .................................................................. 53

6.105.6 Test report ...................................................................................... 54

6.105.7 Transferability of test results ........................................................... 55

6.106 Thermal stability test ........................................................................................ 55

6.107 Humidity test .................................................................................................... 55

7 Routine tests ................................................................................................................. 55

7.1 Dielectric test on the main circuit ..................................................................... 56

7.2 Tests on auxiliary and control circuits .............................................................. 56

7.3 Measurement of the resistance of the main circuit ............................................ 56

7.4 Tightness test .................................................................................................. 57

7.5 Design and visual checks ................................................................................. 57

7.101 Partial discharge test ....................................................................................... 57

7.102 Mechanical operation tests .............................................................................. 57

7.103 Pressure tests of gas-filled compartments ........................................................ 57

7.104 Tests of auxiliary electrical, pneumatic and hydraulic devices .......................... 57

7.105 Tests after erection on site ............................................................................... 58

7.106 Measurement of fluid condition after filling on site ............................................ 58

8 Guide to the selection of switchgear and controlgear ..................................................... 58

8.101 General ............................................................................................................ 58

8.102 Selection of rated values .................................................................................. 59

8.103 Selection of design and construction ................................................................ 59

8.103.1 General .......................................................................................... 59

8.103.2 Architecture and accessibility to high-voltage compartments ........... 60

8.103.3 Service continuity of the switchgear and controlgear....................... 60

8.103.4 Partition classes ............................................................................. 63

8.104 Internal arc fault ............................................................................................... 63

8.104.1 General .......................................................................................... 63

8.104.2 Causes and preventive measures ................................................... 63

8.104.3 Supplementary protective measures ............................................... 63

8.104.4 Considerations for the selection and installation ............................. 64

8.104.5 Internal arc test .............................................................................. 65

8.104.6 IAC classification ............................................................................ 65

8.105 Summary of technical requirements, ratings and optional tests ........................ 66

8.106 Ratings of earthing circuits ............................................................................... 68

---------------------- Page: 7 ----------------------
– 6 – IEC 62271-201:2014 © IEC 2014

8.107 Ratings for cable testing .................................................................................. 69

9 Information to be given with enquiries, tenders and orders ............................................ 69

9.1 Information with enquiries and orders .............................................................. 69

9.2 Information with tenders ................................................................................... 70

10 Transport, storage, installation, operation and maintenance .......................................... 70

10.1 Conditions during transport, storage and installation ........................................ 70

10.2 Installation ....................................................................................................... 70

10.2.3 Mounting ........................................................................................ 71

10.3 Operation ......................................................................................................... 71

10.4 Maintenance .................................................................................................... 71

11 Safety ............................................................................................................................ 71

11.101 Procedures ...................................................................................................... 71

11.102 Internal arc aspects ......................................................................................... 71

12 Influence of the product on the environment .................................................................. 72

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

classification (IAC) ................................................................................................................ 73

AA.1 Room simulation ............
...

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