SIST EN IEC 60947-6-1:2023

Low-voltage switchgear and controlgear - Part 6-1: Multiple function equipment - Transfer switching equipment (IEC 60947-6-1:2021)

This part of EN 60947applies to transfer switching equipment (TSE) to be used in power systems with interruption of the supply to the load during transfer, the rated voltage of which does not exceed 1 000 V a.c. or 1 500 V d.c.

Niederspannungsschaltgeräte - Teil 6-1: Mehrfunktionsschaltgeräte - Netzumschalter (IEC 60947-6-1:2021)

Appareillage à basse tension - Partie 6-1: Matériels à fonctions multiples - Matériels de connexion de transfert (IEC 60947-6-1:2021)

La présente partie de la EN 60947 est applicable aux matériels de connexion de transfert (TSE) destinés à être utilisés dans des systèmes de puissance, avec interruption de l'alimentation de la charge pendant le transfert, dont la tension assignée ne dépasse pas 1 000 V en courant alternatif ou 1 500 V en courant continu.

Nizkonapetostne stikalne in krmilne naprave - 6-1. del: Večfunkcijska oprema - Oprema za samodejno predajanje stikanja (IEC 60947-6-1:2021)

Ta del standarda EN 60947 se uporablja za opremo za samodejno predajanje stikanja (TSE), ki je namenjena uporabi v napajalnih sistemih s prekinitvijo napajanja zaradi obremenitve med prenosom, katerih nazivna napetost ne presega 1000 V izmenične napetosti ali 1500 V enosmerne napetosti.

General Information

• Status: Published
• Publication Date: 01-Jun-2023
• ICS: 29.120.40 - Switches
• ICS: 29.130.20 - Low voltage switchgear and controlgear
• Technical Committee: SKA - Switchgear and control gear
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 25-May-2023
• Due Date: 30-Jul-2023
• Completion Date: 02-Jun-2023
• Directive: 2004/108/EC - Directive 2004/108/EC of the European Parliament and of the Council of 15 December 2004 on the approximation of the laws of the Member States relating to electromagnetic compatibility and repealing Directive 89/336/EEC
• Directive: 2006/95/EC - Directive 2006/95/EC of the European Parliament and of the Council of 12 December 2006 on the harmonisation of the laws of Member States relating to electrical equipment designed for use within certain voltage limits (codified version)
• Directive: 2014/30/EU - Directive 2014/30/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to electromagnetic compatibility (recast)
• Directive: 2014/35/EU - Directive 2014/35/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of electrical equipment designed for use within certain voltage limits
• Mandate: M/511 - Mandate to CEN, CENELEC and ETSI relating to harmonised standards in the field of the Low Voltage Directive
• Mandate: M/552 - [C(2016) 7641 final] Standardisation request as regards harmonised standards in support of Directive 2014/30/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to electromagnetic compatibility
• Ref Project: EN IEC 60947-6-1:2023 - Low-voltage switchgear and controlgear - Part 6-1: Multiple function equipment - Transfer switching equipment

Relations

• Revised: SIST EN 60947-6-1:2006/A1:2014 - Low-voltage switchgear and controlgear - Part 6-1: Multiple function equipment - Transfer switching equipment
• Effective Date: 23-Jan-2018

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN IEC 60947-6-1:2023
01-julij-2023
Nizkonapetostne stikalne in krmilne naprave - 6-1. del: Večfunkcijska oprema -
Oprema za samodejno predajanje stikanja (IEC 60947-6-1:2021)
Low-voltage switchgear and controlgear - Part 6-1: Multiple function equipment -
Transfer switching equipment (IEC 60947-6-1:2021)
Niederspannungsschaltgeräte - Teil 6-1: Mehrfunktionsschaltgeräte - Netzumschalter
(IEC 60947-6-1:2021)
Appareillage à basse tension - Partie 6-1: Matériels à fonctions multiples - Matériels de
connexion de transfert (IEC 60947-6-1:2021)
Ta slovenski standard je istoveten z: EN IEC 60947-6-1:2023
ICS:
29.130.20 Nizkonapetostne stikalne in Low voltage switchgear and
krmilne naprave controlgear
SIST EN IEC 60947-6-1:2023 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN IEC 60947-6-1:2023

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SIST EN IEC 60947-6-1:2023


EUROPEAN STANDARD EN IEC 60947-6-1

NORME EUROPÉENNE

EUROPÄISCHE NORM May 2023
ICS 29.130.20; 29.120.40 Supersedes EN 60947-6-1:2005; EN 60947-6-
1:2005/A1:2014
English Version
Low-voltage switchgear and controlgear - Part 6-1: Multiple
function equipment - Transfer switching equipment
(IEC 60947-6-1:2021)
Appareillage à basse tension - Partie 6-1: Matériels à Niederspannungsschaltgeräte - Teil 6-1:
fonctions multiples - Equipement de transfert de source Mehrfunktionsschaltgeräte - Netzumschalter
(IEC 60947-6-1:2021) (IEC 60947-6-1:2021)
This European Standard was approved by CENELEC on 2021-04-20. 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,
Türkiye 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
© 2023 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
 Ref. No. EN IEC 60947-6-1:2023 E

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SIST EN IEC 60947-6-1:2023
EN IEC 60947-6-1:2023 (E)
European foreword
The text of document 121A/403/FDIS, future edition 3 of IEC 60947-6-1, prepared by SC 121A "Low-
voltage switchgear and controlgear" of IEC/TC 121 "Switchgear and controlgear and their assemblies
for low voltage" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
EN IEC 60947-6-1:2023.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2023-11-19
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2026-05-19
document have to be withdrawn
This document supersedes EN 60947-6-1:2005 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.
This document has been prepared under a Standardization Request given to CENELEC by the
European Commission and the European Free Trade Association, and supports essential
requirements of EU Directive(s) / Regulation(s).
For the relationship with EU Directive(s) / Regulation(s), see informative Annexes ZZA and ZZB, which
are an integral part of this document.
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 60947-6-1:2021 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 standard indicated:
IEC 60034-12:2016 NOTE Approved as EN 60034-12:2017 (not modified)
IEC 60079 (series) NOTE Approved as EN IEC 60079 (series)
IEC 60364-1:2005 NOTE Approved as HD 60364-1:2008 +A11:2017
IEC 60364-5-56 NOTE Approved as HD 60364-5-56
IEC 60947-5-1 NOTE Approved as EN 60947-5-1
IEC 60947-6-2:2020 NOTE Approved as EN IEC 60947-6-2:2023
IEC 61439 (series) NOTE Approved as EN IEC 61439 (series)
IEC 62443 (series) NOTE Approved as EN IEC 62443 (series)
IEC/TR 63201 NOTE Approved as CLC IEC/TR 63201
2

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SIST EN IEC 60947-6-1:2023
EN IEC 60947-6-1:2023 (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.cencenelec.eu.
Publication Year Title EN/HD Year
IEC 60068-2-2 2007 Environmental testing - Part 2-2: Tests - Test EN 60068-2-2 2007
B: Dry heat
IEC 60417 - Graphical symbols for use on equipment -
IEC 60715 2017 Dimensions of low-voltage switchgear and EN 60715 2017
controlgear - Standardized mounting on rails
for mechanical support of switchgear,
controlgear and accessories
IEC 60812 - Failure modes and effects analysis (FMEA EN IEC 60812 2018
and FMECA)
1
IEC 60947 (all parts) Low-voltage switchgear and controlgear EN 60947 -
IEC 60947-1 2020 Low-voltage switchgear and controlgear – EN IEC 60947-1 2021
Part 1: General rules
  + AC 2023-01
IEC 60947-2 2016 Low-voltage switchgear and controlgear – EN 60947-2 2017
Part 2: Circuit-breakers
+ A1 2019 + A1 2020
IEC 60947-3 2020 Low-voltage switchgear and controlgear - EN IEC 60947-3 2021
Part 3: switches, disconnectors, switch-
disconnectors and fuse-combination units
  + AC 2021-11
IEC 60947-4-1 2018 Low-voltage switchgear and controlgear - EN IEC 60947-4-1 2019
Part 4-1: Contactors and motor-starters -
Electromechanical contactors and motor-
starters
  + AC 2020-05
  + AC 2021-04

1
Those parts of the EN 60947 series listed in reference are those listed in the rows below.
3

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SIST EN IEC 60947-6-1:2023
EN IEC 60947-6-1:2023 (E)
Publication Year Title EN/HD Year
IEC 61000-4-13 2002 Electromagnetic compatibility (EMC) – Part EN 61000-4-13 2002
4-13: Testing and measurement techniques
– Harmonics and interharmonics including
mains signalling at a.c. power port, low-
frequency immunity tests
+ A1 2009 + A1 2009
+ A2 2015 + A2 2016
CISPR 11 (mod) 2015 Industrial, scientific and medical equipment - EN 55011 2016
Radio-frequency disturbance characteristics
- Limits and methods of measurement
+ A1 2016 + A1 2017
  + A11 2020

4

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SIST EN IEC 60947-6-1:2023
EN IEC 60947-6-1:2023 (E)
Annex ZZA
(informative)

Relationship between this European standard and the safety
objectives of Directive 2014/35/EU [2014 OJ L96] aimed to be
covered
This European standard has been prepared under a Commission’s standardisation request relating to
harmonised standards in the field of the Low Voltage Directive, M/511, to provide one voluntary means
of conforming to safety objectives of Directive 2014/35/EU of the European Parliament and of the
Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to the
making available on the market of electrical equipment designed for use within certain voltage limits
[2014 OJ L96].
Once this standard is cited in the Official Journal of the European Union under that Directive,
compliance with the normative clauses of this standard given in Table ZZA.1 confers, within the limits
of the scope of this standard, a presumption of conformity with the corresponding safety objectives of
that Directive, and associated EFTA regulations.
Table ZZA.1 — Correspondence between this European standard and Annex I of
Directive 2014/35/EU [2014 OJ L96]
Safety objectives of Clause(s) / sub-clause(s) of this EN Remarks/note
Directive 2014/35/EU
1 a) 4, 5, 6, 8
1 b) 5, 6, 7, 8, 9
1 c) 4, 5, 6, 7, 8, 9, Annex A,
2 a) 5, 6, 8, 9, Annex A
2 b) 5, 6, 8, 9
2 c) 5, 6, 7, 8
2 d) 5, 6, 8, 9
3 a) 5, 6, 7, 8, 9
3 b) 4, 5, 6, 7, 8, 9
3 c) 5, 6, 8, 9
WARNING 1 — Presumption of conformity stays valid only as long as a reference to this European
standard is maintained in the list published in the Official Journal of the European Union. Users of this
standard should consult frequently the latest list published in the Official Journal of the European
Union.
WARNING 2 — Other Union legislation may be applicable to the product(s) falling within the scope of
this standard.
5

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SIST EN IEC 60947-6-1:2023
EN IEC 60947-6-1:2023 (E)
Annex ZZB
(informative)

Relationship between this European standard and the essential
requirements of Directive 2014/30/EU [2014 OJ L96] aimed to be
covered
This European standard has been prepared under the European Commission standardisation request
2
C(2016) 7641 final of 30.11.2016 , ('M/552'), as regards harmonised standards in support of Directive
2014/30/EU relating to electromagnetic compatibility, to provide one voluntary means of conforming to
essential requirements of Directive 2014/30/EU of the European Parliament and of the Council of 26
February 2014 on the harmonisation of the laws of the Member States relating to electromagnetic
compatibility [2014 OJ L96].
Once this standard is cited in the Official Journal of the European Union under that Directive,
compliance with the normative clauses of this standard given in Table ZZB.1 confers, within the limits
of the scope of this standard, a presumption of conformity with the corresponding essential
requirements of that Directive, and associated EFTA regulations.
Table ZZB.1 — Correspondence between this European standard and the Essential
Requirements set out in Directive 2014/30/EU [2014 OJ L96]
Clause(s) / sub-clause(s)
Essential requirements
Remarks / Notes
of Directive 2014/30/EU
of this EN
Annex I. 1(a) 8.3.1, 8.3.3, 9.2.8.1, 9.2.8.3 When this standard in subclauses 8.3.3
(electromagnetic and 9.2.8.3 normatively references EN
55011 for emission requirements the
disturbances)
following applies:

With respect to Clause 3.19 of EN 55011
(Type Test), the following shall not be
applied if Clause 6 (Limits of
electromagnetic disturbances) is applied
for the purposes of the presumption of
conformity: 'Note 1 to entry: Recognition
of a type test as type approval may
depend on national or regional regulation,
see H.2 in Annex H.’
With respect to Clause 7.1 of EN 55011
(General), the following shall not be
applied, if Clause 6 of EN 55011 (Limits
of electromagnetic disturbances) is
applied for the purposes of the
presumption of conformity: 'Requirements
which relate to measurements at such
test sites are type test requirements. A
type test may be recognized as type
approval if the conditions for the statistical

2
COMMISSION IMPLEMENTING DECISION C(2016) 7641 final of 30.11.2016 on a standardisation request to the
European Committee for Standardisation, to the European Committee for Electrotechnical Standardisation and to the
European Telecommunications Standards Institute as regards harmonised standards in support of Directive 2014/30/EU
of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member
States relating to electromagnetic compatibility.
6

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SIST EN IEC 60947-6-1:2023
EN IEC 60947-6-1:2023 (E)
assessment of measurement results
according to Annex H are observed.'
 With respect to Clause 3.19 of EN 55011
(Type Test), the following shall not be
applied, if Clause 7 of EN 55011
(Measurement requirements) is applied
for the purposes of the presumption of
conformity:
'Note 1 to entry: Recognition of a type
test as type approval may depend on
national or regional regulation, see H.2 in
Annex H.’
With respect to Clause 7.1 of EN 55011
(General), the following shall not be
applied, if Clause 7 of EN 55011
(Measurement requirements) is applied
for the purposes of the presumption of
conformity:
'Requirements which relate to
measurements at such test sites are type
test requirements. A type test may be
recognized as type approval if the
conditions for the statistical assessment
of measurement results according to
Annex H are observed.'
Annex I. 1(b) 8.3.1, 8.3.2, 9.2.8.1, 9.2.8.2
(electromagnetic
immunity)

WARNING 1 — Presumption of conformity stays valid only as long as a reference to this European
standard is maintained in the list published in the Official Journal of the European Union. Users of this
standard should consult frequently the latest list published in the Official Journal of the European
Union.
WARNING 2 — Other Union legislation may be applicable to the product(s) falling within the scope of
this standard.

7

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SIST EN IEC 60947-6-1:2023

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SIST EN IEC 60947-6-1:2023




IEC 60947-6-1

®


Edition 3.0 2021-03




INTERNATIONAL



STANDARD




NORME


INTERNATIONALE
colour

inside










Low-voltage switchgear and controlgear –

Part 6-1: Multiple function equipment – Transfer switching equipment



Appareillage à basse tension –

Partie 6-1: Matériels à fonctions multiples – Equipement de transfert de source
















INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE


INTERNATIONALE




ICS 29.120.40; 29.130.20 ISBN 978-2-8322-9448-2




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

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SIST EN IEC 60947-6-1:2023
– 2 – IEC 60947-6-1:2021  IEC 2021
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 9
3 Terms and definitions . 9
3.1 General . 9
3.2 Alphabetical index of terms . 10
3.3 Transfer switching devices . 10
3.4 Operation of TSE . 12
3.5 Main contact positions . 13
3.6 Symbols and abbreviated terms . 14
4 Classification . 14
5 Characteristics . 15
5.1 Summary of characteristics . 15
5.2 Type and characteristics of equipment . 15
5.3 Rated and limiting values for the main circuit . 16
5.3.1 General . 16
5.3.2 Rated voltages . 16
5.3.3 Rated operational current (I ) . 16
e
5.3.4 Rated frequency . 16
5.3.5 Rated making and breaking capacities . 16
5.3.6 Short-circuit characteristics . 17
5.4 Utilization category . 17
5.5 Control circuits . 18
5.5.1 General . 18
5.5.2 Electro-mechanical devices operating the main circuit . 18
5.5.3 ATS controller. 18
5.6 Auxiliary circuits . 18
6 Product information . 18
6.1 Nature of information . 18
6.2 Marking . 18
6.3 Instructions for installation, operation and maintenance, decommissioning
and dismantling. 20
6.4 Environmental information . 21
7 Normal service, mounting and transport conditions . 22
8 Constructional and performance requirements . 22
8.1 Constructional requirements . 22
8.1.1 General . 22
8.1.2 Materials . 22
8.1.3 Indication of the switching position . 23
8.1.4 Equipment suitable for isolation . 23
8.1.5 Opening and closing of main contacts . 23
8.1.6 Clearances and creepage distances . 23
8.1.7 Provision for protective earthing . 23
8.1.8 Stored charge energy circuit . 23

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SIST EN IEC 60947-6-1:2023
IEC 60947-6-1:2021  IEC 2021 – 3 –
8.1.9 Stored energy closing . 24
8.1.10 Dedicated enclosures for TSE . 24
8.2 Performance requirements . 24
8.2.1 Operating conditions . 24
8.2.2 Temperature-rise . 25
8.2.3 Dielectric properties . 25
8.2.4 Ability to make, carry, and break under no-load, normal load and
overload conditions . 25
8.2.5 Ability to make and break under short-circuit conditions . 27
8.2.6 Critical load current performance (DC equipment) . 29
8.3 Electromagnetic compatibility (EMC) . 29
8.3.1 General . 29
8.3.2 Immunity . 29
8.3.3 Emission . 30
9 Tests . 30
9.1 Kinds of tests . 30
9.2 Type tests . 30
9.2.1 General test conditions . 30
9.2.2 Test sequences . 30
9.2.3 Test sequence I – General performance characteristics . 33
9.2.4 Test sequence II – Operational performance capability . 39
9.2.5 Test sequence III – Short-circuit performance capability . 44
9.2.6 Test sequence IV – Conditional short-circuit current . 47
9.2.7 Test sequence V – critical load current performance of equipment with a
DC rating . 48
9.2.8 Test sequence VI – EMC tests . 51
9.3 Routine tests. 53
9.4 Environmental tests . 55
Annex A (normative) Assignment of utilization categories based on results of tests . 57
Annex B (informative) Items subject to agreement between manufacturer and user . 58
Bibliography . 59

Figure 1 – Example of operating sequences for TSE with three positions . 21
Figure 2 – Test circuit for connection to source I and source II supplies . 54
Figure 3 – Test circuit for the verification of making and breaking capacities . 55

Table 1 – Utilization categories . 18
Table 2 – Product information . 19
Table 3 – Verification of making and breaking capacity – Conditions for making and
breaking corresponding to the utilization categories . 26
Table 4 – Verification of operational performance – Conditions for making and breaking

corresponding to the utilization categories . 27
Table 5 – Value of the test current for the verification of the ability to operate under
short-circuit conditions . 28
Table 6 – Value of the test current for the verification of the ability to operate under
short-circuit conditions (harmonized table) . 29
Table 7 – Acceptance criteria of immunity test . 30
Table 8 – List of type tests (overall scheme of test sequences) . 31

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SIST EN IEC 60947-6-1:2023
– 4 – IEC 60947-6-1:2021  IEC 2021
Table 9 – List of type tests to which a derived TSE shall be submitted . 32
Table 10 – Number and duration of operating cycles for the making and breaking
capacity test . 41
Table 11 – Number and rate of operating cycles for the electrical and mechanical
operational performance tests for type A utilization categories . 42
Table 12 – Number and rate of operating cycles for the electrical and mechanical
operational performance tests for type B utilization categories . 42
Table 13 – Temperature-rise limits for terminals and accessible parts . 43
Table 14 – Number of operating cycles corresponding to the critical load current . 50
Table 15 – Test circuit parameters for Table 14 . 50
Table 16 – Test sequence V: Critical load current performance of equipment with a DC
rating . 51

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SIST EN IEC 60947-6-1:2023
IEC 60947-6-1:2021  IEC 2021 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR –

Part 6-1: Multiple function equipment –
Transfer switching equipment

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
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with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
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consensus of opinion on the relevant subjects since each technical committee has representation from all
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