CONTENTS
FOREWORD 6
INTRODUCTION 9
1Scope 10
2Normative references 10
3Terms and definitions 11
3.1General terms and definitions 11
3.2Assemblies of switchgear and controlgear 13
3.3Parts of assemblies 13
3.4Switching devices 13
3.5Parts of switchgear and controlgear 13
3.6Operational characteristics of switchgear and controlgear 16
3.7Characteristic quantities 18
3.8Index of definitions 19
4Normal and special service conditions 20
5Ratings 21
5.1General 21
5.2Rated voltage (Ur) 21
5.3Rated insulation level (Ud, Up, Us) 21
5.4Rated frequency (fr) 21
5.5Rated continuous current (Ir) 21
5.6Rated short-time withstand currents (Ik, Ike) 21
5.7Rated peak withstand currents (Ip, Ipe) 22
5.8Rated durations of short-circuit (tk, tke) 22
5.9Rated supply voltage of auxiliary and control circuits (Ua) 23
5.10Rated supply frequency of auxiliary and control circuits 23
5.11Rated pressure of compressed gas supply for controlled pressure systems 23
5.101Classification of earthing function through main switching device 23
5.102Rated cable test voltages (Uct (AC), Uct (DC)) 23
5.103Ratings of the internal arc classification (IAC) 23
6Design and construction 25
6.1Requirements for liquids in switchgear and controlgear 25
6.2Requirements for gases in switchgear and controlgear 25
6.3Earthing of switchgear and controlgear 25
6.4Auxiliary and control equipment and circuits 26
6.5Dependent power operation 26
6.6Stored energy operation 26
6.7Independent unlatched operation (independent manual or power operation) 26
6.8Manually operated actuators 26
6.9Operation of releases 26
6.10Pressure/level indication 27
6.11Nameplates 27
6.12Locking devices 28
Position indication 29
6.14Degrees of protection provided by enclosures 29
6.15Creepage distances for outdoor insulators 30
6.16Gas and vacuum tightness 30
6.17Tightness for liquid systems 30
6.18Fire hazard (flammability) 30
6.19Electromagnetic compatibility (EMC) 30
6.20X-ray emission 30
6.21Corrosion 30
6.22Filling levels for insulation, switching and/or operation 30
6.101General requirements for assemblies 31
6.102Metal enclosure 31
6.103High-voltage compartments 33
6.104Removable parts 37
6.105Provisions for dielectric tests on cables 37
6.106Internal arc fault 38
7Type tests 38
7.1General 38
7.2Dielectric tests 39
7.3Radio interference voltage (RIV) test 43
7.4Resistance measurement 43
7.5Continuous current tests 43
7.6Short-time withstand current and peak withstand current tests 45
7.7Verification of the protection 47
7.8Tightness tests 47
7.9Electromagnetic compatibility tests (EMC) 48
7.10Additional tests on auxiliary and control circuits 48
7.11X-radiation test for vacuum interrupters 48
7.101Verification of making and breaking capacities 48
7.102Mechanical operation tests 50
7.103Pressure withstand test for gas-filled compartments 51
7.104Tests to verify the protection of persons against dangerous electrical effects 52
7.105Internal arc test 53
8Routine tests 57
8.1General 57
8.2Dielectric test on the main circuit 57
8.3Tests on auxiliary and control circuits 57
8.4Measurement of the resistance of the main circuit 58
8.5Tightness test 58
8.6Design and visual checks 58
8.101Partial discharge measurement 58
8.102Mechanical operation tests 58
8.103Pressure tests of gas-filled compartments 59
8.104Tests after erection on site 59
8.105Measurement of fluid condition after filling on site 59
9Guide to the selection of switchgear and controlgear (informative) 59
9.1General 59
9.2Selection of rated values 60
Cable-interface considerations 60
9.4Continuous or temporary overload due to changed service conditions 60
9.5Environmental aspects 60
9.101Selection of design and construction 60
9.102Ratings related to earthing circuits 64
9.103Internal arc fault 65
9.104Summary of technical requirements, ratings and optional tests 71
10Information to be given with enquiries, tenders and orders (informative) 73
10.1General 73
10.2Information with enquiries and orders 73
10.3Information with tenders 74
11Transport, storage, installation, operating instructions and maintenance 75
11.1General 75
11.2Conditions during transport, storage and installation 75
11.3Installation 75
11.4Operating instructions 75
11.5Maintenance 76
12Safety 76
12.101Procedures 76
12.102Internal arc aspects 76
13Influence of the product on the environment 77
Annex A (normative) Internal arc fault – Method to verify the internal arc classification
(IAC) 78
A.1Room simulation 78
A.2Indicators (for assessing the thermal effects of the gases) 80
A.3Tolerances for geometrical dimensions of test arrangements 82
A.4Test parameters 82
A.5Test procedure 83
Annex B (normative) Partial discharge measurement 95
B.1General 95
B.2Application 95
B.3Test circuits and measuring instruments 95
B.4Test procedure 96
B.5Maximum 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
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
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
1 Scope
This part of IEC 62271 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.
For components installed in a metal-enclosed switchgear and controlgear, this document supplements or even replaces in some cases, the requirements as stated by the individual product standards.
The list of components which can be inside the metal-enclosed switchgear and controlgear is not limited to the ones explicitly cited in this document.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
IEC 60050-151, International Electrotechnical Vocabulary (IEV) – Part 151: Electrical and magnetic devices (available at http://www.electropedia.org)
IEC 60050-441, International Electrotechnical Vocabulary (IEV) – Part 441: Switchgear, controlgear and fuses (available at http://www.electropedia.org)
IEC 60060-1:2010, High-voltage test techniques – Part 1: General definitions and test requirements
IEC 60270:2000, High-voltage test techniques – Partial discharge measurements
IEC 60270:2000/AMD1:2015
IEC 60529:1989, Degrees of protection provided by enclosures (IP Code)
IEC 60529:1989/AMD1:1999
IEC 60529:1989/AMD2:2013
IEC 62262:2002, Degrees of protection provided by enclosures for electrical equipment against external mechanical impacts (IK code)
IEC 62271-1:2017, High-voltage switchgear and controlgear – Part 1: Common specifications for alternating current switchgear and controlgear
IEC 62271-100:2021, High-voltage switchgear and controlgear – Part 100: Alternating-current circuit-breakers
IEC 62271-102:2018, High-voltage switchgear and controlgear – Part 102: Alternating current disconnectors and earthing switches
IEC 62271-103:2021, High-voltage switchgear and controlgear – Part 103: Switches for rated voltages above 1 kV up to and including 52 kV
IEC 62271-105:2021, High-voltage switchgear and controlgear – Part 105: Alternating current switch-fuse combinations for rated voltages above 1 kV up to and including 52 kV
IEC 62271-106:2021, High-voltage switchgear and controlgear – Part 106: Alternating current contactors, contactor-based controllers and motor-starters
IEC 62271-107:2019, High-voltage switchgear and controlgear – Part 107: Alternating current fused circuit-switchers for rated voltages above 1 kV up to and including 52 kV
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
IEC 62271-203:2011, High-voltage switchgear and controlgear – Part 203: Gas-insulated metal-enclosed switchgear for rated voltages above 52 kV
IEC 62271-213:2021, High-voltage switchgear and controlgear – Part 213: Voltage detecting and indicating system
IEC 62271-215:2021, High-voltage switchgear and controlgear – Part 215: Phase comparator used with VDIS
IEC IEEE 62271-37-013:2015, High-voltage switchgear and controlgear – Part 37-013: Alternating-current generator circuit-breakers
Bibliography
[1]IEC 60050-601, International Electrotechnical Vocabulary (IEV) – Part 601: Generation, transmission and distribution of electricity – General (available at http://www.electropedia.org)
[2]IEC TS 62271-304:2019, High-voltage switchgear and controlgear – Part 304: Classification of indoor enclosed switchgear and controlgear for rated voltages above 1 kV up to and including 52 kV related to the use in special service conditions with respect to condensation and pollution
[3]IEEE 400.2:2013, IEEE Guide for Field Testing of Shielded Power Cable Systems Using Very Low Frequency (VLF) (less than 1 Hz)
[4]IEC 62271-214:2019, High-voltage switchgear and controlgear – Part 214: Internal arc classification for metal-enclosed pole-mounted switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV
[5]IEEE C37.20.7:2017, IEEE Guide for Testing Metal-Enclosed Switchgear Rated Up to 38 kV for Internal Arcing Faults
[6]IEC 60059:1999, IEC standard current ratings
IEC 60059:1999/AMD1:2009
[7]IEC 62271-4:2013, High-voltage switchgear and controlgear – Part 4: Handling procedures for sulphur hexafluoride (SF6) and its mixtures
[8]IEC 60724:2000, Short-circuit temperature limits of electric cables with rated voltages of 1 kV (Um = 1,2 kV) and 3 kV (Um = 3,6 kV)
IEC 60724:2000/AMD1:2008
[9]IEC 60243-1:2013, Electrical strength of insulating materials – Test methods – Part 1:
Tests at power frequencies
[10]IEC TR 62271-307:2015, High-voltage switchgear and controlgear – Part 307: Guidance for the extension of validity of type tests of AC metal and solid-insulation enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV
[11]Cigré Technical Brochure 686:2017, Mitigating the Effects of Arcs in M.V. Switchgear,
ISBN 978-2-85873-389-7
[12]IEC 60909-0:2016, Short-circuit currents in three-phase AC systems – Part 0:
Calculation of currents
[13]ISO IEC Guide 51:2014, Safety aspects – Guidelines for their inclusion in standards
[14]EN 50187:1996, Gas-filled compartments for AC switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV