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)

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.

Hochspannungs-Schaltgeräte und -Schaltanlagen - Teil 200: Metallgekapselte Wechselstrom-Schaltanlagen für Bemessungsspannungen über 1 kV bis einschließlich 52 kV (IEC 62271-200:2021)

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)

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.

Visokonapetostne stikalne in krmilne naprave - 200. del: Stikalne in krmilne naprave v kovinskih ohišjih za naznačene izmenične napetosti nad 1 kV in do vključno 52 kV (IEC 62271-200:2021)

General Information

Status
Published
Publication Date
22-Aug-2021
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
04-Aug-2021
Due Date
09-Oct-2021
Completion Date
23-Aug-2021

RELATIONS

Buy Standard

Standard
SIST EN IEC 62271-200:2021 - BARVE na PDF-str 98,100,108. Vodni pretisk prestavljen na PDF-str 104
English language
107 pages
sale 10% off
Preview
sale 10% off
Preview

e-Library read for
1 day

Standards Content (sample)

SLOVENSKI STANDARD
SIST EN IEC 62271-200:2021
01-september-2021
Nadomešča:
SIST EN 62271-200:2012
SIST EN 62271-200:2012/AC:2015
Visokonapetostne stikalne in krmilne naprave - 200. del: Stikalne in krmilne
naprave v kovinskih ohišjih za naznačene izmenične napetosti nad 1 kV in do
vključno 52 kV (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 (IEC 62271-

200:2021)
Hochspannungs-Schaltgeräte und -Schaltanlagen - Teil 200: Metallgekapselte
Wechselstrom-Schaltanlagen für Bemessungsspannungen über 1 kV bis einschließlich
52 kV (IEC 62271-200:2021)

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)
Ta slovenski standard je istoveten z: EN IEC 62271-200:2021
ICS:
29.130.10 Visokonapetostne stikalne in High voltage switchgear and
krmilne naprave controlgear
SIST EN IEC 62271-200:2021 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN IEC 62271-200:2021
---------------------- Page: 2 ----------------------
SIST EN IEC 62271-200:2021
EUROPEAN STANDARD EN IEC 62271-200
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2021
ICS 29.130.10 Supersedes EN 62271-200:2012 and all of its
amendments and corrigenda (if any)
English Version
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)

Appareillage à haute tension - Partie 200: Appareillage Hochspannungs-Schaltgeräte und -Schaltanlagen - Teil

sous enveloppe métallique pour courant alternatif de 200: Metallgekapselte Wechselstrom-Schaltanlagen für

tensions assignées supérieures à 1 kV et inférieures ou Bemessungsspannungen über 1 kV bis einschließlich 52 kV

égales à 52 kV (IEC 62271-200:2021)
(IEC 62271-200:2021)

This European Standard was approved by CENELEC on 2021-07-01. CENELEC members are bound to comply with the CEN/CENELEC

Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC

Management Centre or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation

under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the

same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,

Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the

Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN IEC 62271-200:2021 E
---------------------- Page: 3 ----------------------
SIST EN IEC 62271-200:2021
EN IEC 62271-200:2021 (E)
European foreword

The text of document 17C/782/FDIS, future edition 3 of IEC 62271-200, prepared by SC 17C

“Assemblies” of IEC/TC 17 “High-voltage switchgear and controlgear” was submitted to the IEC-

CENELEC parallel vote and approved by CENELEC as EN IEC 62271-200:2021.
The following dates are fixed:

• latest date by which the document has to be implemented at national (dop) 2022–04–01

level by publication of an identical national standard or by endorsement

• latest date by which the national standards conflicting with the (dow) 2024–07–01

document have to be withdrawn

This document supersedes EN 62271-200:2012 and all of its amendments and corrigenda (if any).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

Any feedback and questions on this document should be directed to the users’ national committee. A

complete listing of these bodies can be found on the CENELEC website.
Endorsement notice

The text of the International Standard IEC 62271-200:2021 was approved by CENELEC as a

European Standard without any modification.

In the official version, for Bibliography, the following notes have to be added for the standards

indicated:
IEC 62271-214:2019 NOTE Harmonized as EN IEC 62271-214:2019 (not modified)
IEC 60059:1999 NOTE Harmonized as EN 60059:1999 (not modified)
IEC 60243-1:2013 NOTE Harmonized as EN 60243-1:2013 (not modified)

IEC/TR 62271-307:2015 NOTE Harmonized as CLC IEC/TR 62271-307:2019 (not modified)

IEC 60909-0:2016 NOTE Harmonized as EN 60909-0:2016 (not modified)
---------------------- Page: 4 ----------------------
SIST EN IEC 62271-200:2021
EN IEC 62271-200:2021 (E)
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

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.

NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod), the

relevant EN/HD applies.

NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available

here: www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60050-151 - International Electrotechnical Vocabulary - - -
Part 151: Electrical and magnetic devices
IEC 60050-441 - International Electrotechnical Vocabulary. - -
Switchgear, controlgear and fuses
IEC 60060-1 2010 High-voltage test techniques - Part 1: EN 60060-1 2010
General definitions and test requirements
IEC 60270 2000 High-voltage test techniques - Partial EN 60270 2001
discharge measurements
+ A1 2015 + A1 2016
IEC 60529 1989 Degrees of protection provided by EN 60529 1991
enclosures (IP Code)
- - + corrigendum May 1993
+ A1 1999 + A1 2000
+ A2 2013 + A2 2013
IEC 62262 2002 Degrees of protection provided by EN 62262 2002
enclosures for electrical equipment against
external mechanical impacts (IK code)
IEC 62271-1 2017 High-voltage switchgear and controlgear - EN 62271-1 2017
Part 1: Common specifications for
alternating current switchgear and
controlgear

IEC 62271-100 2021 High-voltage switchgear and controlgear - EN IEC 62271-100 2021

Part 100: Alternating-current circuit-
breakers

IEC 62271-102 2018 High-voltage switchgear and controlgear - EN IEC 62271-102 2018

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
---------------------- Page: 5 ----------------------
SIST EN IEC 62271-200:2021
EN IEC 62271-200:2021 (E)
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 - EN IEC 62271-106 2021

Part 106: Alternating current contactors,
contactor-based controllers and motor-
starters

IEC 62271-107 2019 High-voltage switchgear and controlgear - EN IEC 62271-107 2019

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 - EN 62271-201 2014
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 - EN 62271-203 2012
Part 203: Gas-insulated metal-enclosed
switchgear for rated voltages above 52 kV

IEC 62271-213 2021 High-voltage switchgear and controlgear - EN IEC 62271-213 2021

Part 213: Voltage detecting and indicating
system

IEC 62271-215 2021 High-voltage switchgear and controlgear - EN IEC 62271-215 2021

Part 215: Phase comparator used with
VDIS
IEC 2015 High-voltage switchgear and controlgear -
IEEE 62271-37-013 Part 37–013: Alternating-current generator
circuit-breakers
---------------------- Page: 6 ----------------------
SIST EN IEC 62271-200:2021
IEC 62271-200
Edition 3.0 2021-05
INTERNATIONAL
STANDARD
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
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.130.10 ISBN 978-2-8322-9793-3

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

® Registered trademark of the International Electrotechnical Commission
---------------------- Page: 7 ----------------------
SIST EN IEC 62271-200:2021
– 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: 8 ----------------------
SIST EN IEC 62271-200:2021
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: 9 ----------------------
SIST EN IEC 62271-200:2021
– 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: 10 ----------------------
SIST EN IEC 62271-200:2021
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 .......................................................

...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.