High-voltage switchgear and controlgear - Part 212: Compact Equipment Assembly for Distribution Substation (CEADS) for AC voltages up to 52 kV

IEC 62271-212:2022 is available as IEC 62271-212:2022 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 62271-212;2022 specifies the service conditions, rated characteristics, general structural requirements and test methods of the assemblies of the main electrical functional units of a high-voltage transformer substation, duly interconnected, for AC voltages up to and including 52 kV on the high-voltage side and service frequency 50 Hz or 60 Hz. The CEADS is cable‑connected to the high-voltage network for indoor and outdoor applications of restricted access. This second edition cancels and replaces the first edition published in 2016. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- clause numbering aligned with IEC 62271-1:2017,
- rewording of title and scope of the document,
- implement changes on internal arc definition and testing following the evolution of prefabricated substation concept according to IEC 62271-202,
- general review of main test procedures such as temperature rise or dielectric test on interconnections, considering control equipment, communication, smart grid devices and integration of components,
- general review of installation, operation, safety and maintenance requirements.

Appareillage à haute tension - Partie 212: Ensemble compact d’équipement pour poste de distribution (ECEPD) pour les tensions alternatives inférieures ou égales à 52 kV

IEC 62271-212:2022 est disponible sous forme de IEC 62271-212:2022 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.L'IEC 62271-212:2022 spécifie les conditions de service, les caractéristiques assignées, les exigences structurelles générales et les méthodes d'essai des ensembles des principales unités fonctionnelles électriques d'un poste de transformation haute tension, dûment interconnecté, pour les tensions alternatives inférieures ou égales à 52 kV du côté haute tension, et avec une fréquence de service de 50 Hz ou 60 Hz. L’ECEPD est raccordé par câble au réseau à haute tension pour des applications à l’intérieur et à l’extérieur à accès restreint. Cette deuxième édition annule et remplace la première édition parue en 2016. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- numérotation des articles alignée sur l’IEC 62271-1:2017;
- reformulation du titre et du domaine d'application du document;
- mise en œuvre des modifications relatives à la définition et aux essais d'arc interne en suivant l'évolution du concept de poste préfabriqué conformément à l’IEC 62271-202;
- examen général des principaux modes opératoires d'essai tels que l'échauffement ou l’essai diélectrique sur les interconnexions, compte tenu des équipements de commande, de la communication, des dispositifs de réseau intelligent et de l'intégration des composants;
- examen général des exigences d’installation, de fonctionnement, de sécurité et de maintenance.

General Information

Status
Published
Publication Date
28-Jun-2022
Technical Committee
Current Stage
PPUB - Publication issued
Completion Date
29-Jun-2022
Ref Project

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IEC 62271-212
Edition 2.0 2022-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
High-voltage switchgear and controlgear –
Part 212: Compact Equipment Assembly for Distribution Substation (CEADS) for
AC voltages up to 52 kV
Appareillage à haute tension –
Partie 212: Ensemble compact d’équipement pour poste de distribution (ECEPD)
pour les tensions alternatives inférieures ou égales à 52 kV
IEC 62271-212:2022-06(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 62271-212
Edition 2.0 2022-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
High-voltage switchgear and controlgear –
Part 212: Compact Equipment Assembly for Distribution Substation (CEADS) for
AC voltages up to 52 kV
Appareillage à haute tension –
Partie 212: Ensemble compact d’équipement pour poste de distribution
(ECEPD) pour les tensions alternatives inférieures ou égales à 52 kV
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.130.10 ISBN 978-2-8322-3806-6

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 62271-212:2022 © IEC 2022
CONTENTS

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

INTRODUCTION ..................................................................................................................... 8

1 Scope .............................................................................................................................. 9

2 Normative references ...................................................................................................... 9

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

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

3.2 Assemblies of switchgear and controlgear ............................................................ 11

3.3 Parts of assemblies .............................................................................................. 12

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

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

3.6 Operational characteristics of switchgear and controlgear ..................................... 13

3.7 Characteristic quantities ....................................................................................... 13

3.8 Index of definitions ................................................................................................ 13

4 Normal and special service conditions ........................................................................... 13

4.1 Normal service conditions ..................................................................................... 13

4.2 Special service conditions ..................................................................................... 14

5 Ratings .......................................................................................................................... 15

5.1 General ................................................................................................................. 15

5.2 Rated voltage ....................................................................................................... 16

5.3 Rated insulation level ............................................................................................ 16

5.4 Rated frequency (f ) .............................................................................................. 16

5.5 Rated continuous current (I ) ................................................................................ 16

5.6 Rated short-time withstand current (I ) ................................................................. 17

5.7 Rated peak withstand current (I ) ......................................................................... 17

5.9 Rated supply voltage of auxiliary and control circuits (U ) .................................... 18

5.10 Rated supply frequency of auxiliary and control circuits ........................................ 18

5.11 Rated pressure of compressed gas supply for controlled pressure systems .......... 18

5.101 Rated power and total losses of CEADS ............................................................... 19

5.102 Ratings of the internal arc classification (IAC) ....................................................... 19

6 Design and construction ................................................................................................ 20

6.1 Requirements for liquids in switchgear and controlgear ......................................... 21

6.2 Requirements for gases in switchgear and controlgear ......................................... 21

6.3 Earthing of switchgear and controlgear ................................................................. 21

6.4 Auxiliary and control equipment and circuits ......................................................... 22

6.5 Dependent power operation .................................................................................. 22

6.6 Stored energy operation ........................................................................................ 22

6.7 Independent unlatched operation (independent manual or power operation) ......... 22

6.8 Manually operated actuators ................................................................................. 22

6.9 Operation of releases ............................................................................................ 22

6.10 Pressure/level indication ....................................................................................... 22

6.11 Nameplates........................................................................................................... 22

6.12 Locking devices .................................................................................................... 23

6.13 Position indication ................................................................................................. 23

6.14 Degrees of protection provided by enclosures ....................................................... 23

6.15 Creepage distances for outdoor insulators ............................................................ 24

---------------------- Page: 4 ----------------------
IEC 62271-212:2022 © IEC 2022 – 3 –

6.16 Gas and vacuum tightness .................................................................................... 24

6.17 Tightness for liquid systems .................................................................................. 24

6.18 Fire hazard (flammability) ..................................................................................... 24

6.19 Electromagnetic compatibility (EMC) ..................................................................... 24

6.20 X-ray emission ...................................................................................................... 24

6.21 Corrosion .............................................................................................................. 24

6.22 Filling levels for insulation, switching and/or operation .......................................... 24

6.101 Protection against mechanical stresses ................................................................ 25

6.102 Protection of the environment due to internal defects ............................................ 25

6.103 Internal arc fault .................................................................................................... 25

6.104 Enclosures ............................................................................................................ 26

6.105 Sound emission .................................................................................................... 26

6.106 Electromagnetic fields ........................................................................................... 26

6.107 Solar radiation ...................................................................................................... 26

7 Type tests ..................................................................................................................... 27

7.1 General ................................................................................................................. 27

7.2 Dielectric tests ...................................................................................................... 28

7.3 Radio interference voltage (RIV) test .................................................................... 32

7.4 Resistance measurement ...................................................................................... 32

7.5 Continuous current tests ....................................................................................... 32

7.6 Short-time withstand current and peak withstand current tests .............................. 32

7.7 Verification of the protection ................................................................................. 33

7.8 Tightness tests ..................................................................................................... 33

7.9 Electromagnetic compatibility tests (EMC) ............................................................ 33

7.10 Additional tests on auxiliary and control circuits .................................................... 34

7.11 X-radiation test for vacuum interrupters ................................................................ 34

7.101 Temperature-rise tests .......................................................................................... 35

7.102 Internal arc test ..................................................................................................... 42

7.103 Verification of making and breaking capacities of high-voltage functional unit ....... 45

7.104 Mechanical operation tests ................................................................................... 45

7.105 Mechanical stability test ........................................................................................ 45

7.106 Pressure withstand test for gas-filled compartments.............................................. 45

7.107 Measurements of leakage currents of non-metallic enclosures .............................. 46

7.108 Weatherproofing test ............................................................................................. 46

7.109 Tightness and mechanical strength for liquid filled compartments ......................... 46

7.110 Measurement or calculation of electromagnetic fields ........................................... 46

8 Routine tests ................................................................................................................. 46

8.1 General ................................................................................................................. 46

8.2 Dielectric tests on the main circuit ......................................................................... 47

8.3 Tests on auxiliary and control circuits ................................................................... 48

8.4 Measurement of the resistance of the main circuit ................................................. 48

8.5 Tightness test ....................................................................................................... 48

8.6 Design and visual checks ...................................................................................... 48

8.101 Mechanical operation tests on high-voltage functional unit .................................... 48

8.102 Pressure tests of gas-filled compartments ............................................................. 48

8.103 Tests of auxiliary electrical, pneumatic and hydraulic devices ............................... 49

8.104 Measurement of the winding resistance ................................................................ 49

8.105 Measurement of the voltage ratio and check of phase displacement ..................... 49

8.106 Measurement of the short circuit impedance and load losses ................................ 49

---------------------- Page: 5 ----------------------
– 4 – IEC 62271-212:2022 © IEC 2022

8.107 Measurement of no-load loss and current ............................................................. 49

8.108 Inspection of the low-voltage functional unit, including inspection of wiring,

operational performance and function ................................................................... 49

8.109 Checking of protective measures and of the electrical continuity of the

protective circuits of the low-voltage functional unit ............................................... 49

8.110 Tests after CEADS assembly on site ..................................................................... 49

9 Guide to the selection of CEADS (informative) ............................................................... 49

9.1 General ................................................................................................................. 49

9.2 Selection of rated values ....................................................................................... 50

9.3 Cable-interface considerations .............................................................................. 50

9.4 Continuous or temporary overload due to changed service conditions ................... 50

9.5 Environmental aspects .......................................................................................... 50

9.101 Selection of internal arc classification ................................................................... 50

9.102 Summary of technical requirements and ratings for CEADS .................................. 52

10 Information to be given with enquiries, tenders and orders (informative) ........................ 56

10.1 General ................................................................................................................. 56

10.2 Information with enquiries and orders ................................................................... 56

10.3 Information with tenders ........................................................................................ 57

11 Transport, storage, installation, operating instructions and maintenance........................ 58

11.1 General ................................................................................................................. 58

11.2 Conditions during transport, storage and installation ............................................. 58

11.3 Installation ............................................................................................................ 58

11.4 Operating instructions ........................................................................................... 59

11.5 Maintenance ......................................................................................................... 60

11.101 Dismantling, recycling and disposal at the end of service life ................................ 60

12 Safety ............................................................................................................................ 60

12.1 General ................................................................................................................. 60

12.101 Electrical aspects .................................................................................................. 61

12.102 Mechanical aspects .............................................................................................. 61

12.103 Thermal aspects ................................................................................................... 61

12.104 Internal arc aspects .............................................................................................. 61

13 Influence of the product on the environment .................................................................. 61

Annex A (normative) Method for testing CEADS under conditions of arcing due to an

internal arc fault .................................................................................................................... 62

A.1 General ................................................................................................................. 62

A.2 Room simulation ................................................................................................... 62

A.3 Indicators (for assessing the thermal effects of the gases) .................................... 62

A.4 Tolerances for geometrical dimensions of test arrangements ................................ 64

A.5 Test parameters .................................................................................................... 64

A.6 Test procedure ...................................................................................................... 64

A.7 Designation of the internal arc classification ......................................................... 66

Annex B (normative) Test to verify the sound level of a CEADS ........................................... 75

B.1 Purpose ................................................................................................................ 75

B.2 Test object ............................................................................................................ 75

B.3 Test method .......................................................................................................... 75

B.4 Measurements ...................................................................................................... 75

B.5 Presentation and calculation of the results ............................................................ 75

Annex C (informative) Types and application of CEADS ....................................................... 76

---------------------- Page: 6 ----------------------
IEC 62271-212:2022 © IEC 2022 – 5 –

C.1 Type of CEADS ..................................................................................................... 76

C.2 Application of CEADS ........................................................................................... 76

Bibliography .......................................................................................................................... 79

Figure 1 – Test diagram in case of type-tested high-voltage functional unit ........................... 37

Figure 2 – Test diagram in case of non-type-tested high-voltage functional unit .................... 38

Figure 3 – Diagram of the temperature-rise test alternative method ...................................... 39

Figure 4 – Diagram for the open-circuit test .......................................................................... 40

Figure A.1 – Mounting frame for vertical indicators ............................................................... 67

Figure A.2 – Horizontal indicators ......................................................................................... 67

Figure A.3 – Protection of operators in front of classified side(s) of CEADS .......................... 68

Figure A.4 – Protection of general public around the CEADS ................................................ 68

Figure A.5 – Protection of operators in front of classified side(s) of CEADS having a

pressure relief volume below the floor ................................................................................... 69

Figure A.6 – Protection of the general public around the CEADS having a pressure

relief volume below the floor ................................................................................................. 70

Figure A.7 – Selection of tests on high-voltage functional unit for class IAC-A ...................... 71

Figure A.8 – Selection of tests on high-voltage functional unit for class IAC-B ...................... 72

Figure A.9 – Selection of tests on high-voltage interconnection for class IAC-A .................... 73

Figure A.10 – Selection of tests on high-voltage interconnection for class IAC-B .................. 74

Figure C.1 – Application of CEADS ....................................................................................... 77

Figure C.2 – CEADS Type G ................................................................................................. 77

Figure C.3 – CEADS Type A ................................................................................................. 78

Figure C.4 – CEADS Type I .................................................................................................. 78

Table 1 – Locations, causes and examples of measures decreasing the probability of

internal arc faults .................................................................................................................. 51

Table 2 – Examples of measures limiting the consequences of internal arc faults ................. 51

Table 3 – Summary of technical requirements, ratings for CEADS – Service conditions ........ 53

Table 4 – Summary of technical requirements, ratings for CEADS – Ratings of the

CEADS ................................................................................................................................. 53

Table 5 – Summary of technical requirements, ratings for CEADS – Design and

construction of the CEADS ................................................................................................... 55

---------------------- Page: 7 ----------------------
– 6 – IEC 62271-212:2022 © IEC 2022
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR –
Part 212: Compact Equipment Assembly
for Distribution Substation (CEADS) for AC voltages up to 52 kV
FOREWORD

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