SIST EN IEC 60947-4-2:2023

Low-voltage switchgear and controlgear - Part 4-2: Contactors and motor-starters - Semiconductor motor controllers, starters and soft-starters (IEC 60947-4-2:2020)

IEC 60947-4-2:2020 applies to semiconductor motor controllers, starters and soft-starters which can include a series mechanical switching device, intended to be connected to circuits the rated voltage of which does not exceed 1 000 V AC.
This fourth edition cancels and replaces the third edition published in 2011. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
- scope exclusions;
- editorial correction of notes and hanging paragraphs;
- reference to IEC 62683-1;
- safety aspects related to:
- general aspects;
- limited energy circuits;
- electronic circuits;
- mention of dedicated wiring accessories;
- power consumption measurement;
- alignment to IEC 60947-1:2020.

Niederspannungsschaltgeräte - Teil 4-2: Schütze und Motorstarter - Halbleiter-Motor-Steuergeräte und -Starter für Wechselspannungen (IEC 60947-4-2:2020)

Appareillage à basse tension - Partie 4-2: Contacteurs et démarreurs de moteurs - Gradateurs et démarreurs à semiconducteurs de moteurs à courant alternatif (IEC 60947-4-2:2020)

L’IEC 60947-4-2:2020 s’applique aux gradateurs, démarreurs et démarreurs progressifs à semiconducteurs de moteurs qui peuvent comprendre un appareil mécanique de connexion en série, destiné à être relié à des circuits dont la tension assignée ne dépasse pas 1 000 V en courant alternatif.
Cette quatrième édition annule et remplace la troisième édition parue en 2011. Cette édition constitue une révision technique.
La présente édition inclut les modifications techniques majeures suivantes par rapport à l’édition précédente:
- exclusions du domaine d’application;
- correction rédactionnelle des notes et des alinéas en suspens;
- référence à l’IEC 62683-1;
- aspects de sécurité relatifs aux points suivants:
- aspects généraux;
- circuits à énergie limitée;
- circuits électroniques;
- mention des accessoires de câblage dédiés;
- mesure de la puissance consommée;
- alignement sur l’IEC 60947-1:2020.
La version française de la norme n’a pas été soumise au vote.

Nizkonapetostne stikalne in krmilne naprave - 4-2. del: Kontaktorji in motorski zaganjalniki - Polprevodniški krmilniki motorjev, zaganjalniki motorjev in mehki zaganjalniki na izmenični tok (IEC 60947-4-2:2020)

Standard IEC 60947-4-2:2020 se uporablja za polprevodniške krmilnike, zaganjalnike in mehke zaganjalnike motorjev, ki lahko vključujejo serijsko mehansko stikalno napravo, namenjeno priključku na tokokroge z nazivno izmenično napetostjo, ki ne presega 1000 V.
Četrta izdaja razveljavlja in nadomešča tretjo izdajo, objavljeno leta 2011. Ta izdaja je tehnično popravljena izdaja.
Ta izdaja v primerjavi s prejšnjo vključuje naslednje pomembne tehnične spremembe:
– predmetne izključitve;
– uredniške popravke opomb in odstavkov z visečim zamikom;
– sklicevanja na standard IEC 62683-1;
– varnostne vidike v povezavi s/z:
– splošne vidike;
– omejene tokokroge energije;
– elektronska vezja;
– omemba namenskih dodatkov za ožičenje;
– merjenje porabe energije;
– uskladitev s standardom IEC 60947-1:2020.

General Information

• Status: Published
• Publication Date: 28-Mar-2023
• 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: 07-Mar-2023
• Due Date: 12-May-2023
• Completion Date: 29-Mar-2023
• 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 60947-4-2:2023 - Low-voltage switchgear and controlgear - Part 4-2: Contactors and motor-starters - Semiconductor motor controllers, starters and soft-starters

Relations

• Revised: SIST EN 60947-4-2:2012 - Low-voltage switchgear and controlgear - Part 4-2: Contactors and motor-starters - AC semiconductor motor controllers and starters (IEC 60947-4-2:2011)
• Effective Date: 20-Mar-2018
• Amended By: SIST EN IEC 60947-4-2:2023/oprA1:2023 - Amendment 1 - Low-voltage switchgear and controlgear - Part 4-2: Contactors and motor-starters - Semiconductor motor controllers, starters and soft-starters
• Effective Date: 21-Mar-2023

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN IEC 60947-4-2:2023
01-maj-2023
Nizkonapetostne stikalne in krmilne naprave - 4-2. del: Kontaktorji in motorski
zaganjalniki - Polprevodniški krmilniki motorjev, zaganjalniki motorjev in mehki
zaganjalniki na izmenični tok (IEC 60947-4-2:2020)
Low-voltage switchgear and controlgear - Part 4-2: Contactors and motor-starters -
Semiconductor motor controllers, starters and soft-starters (IEC 60947-4-2:2020)
Niederspannungsschaltgeräte - Teil 4-2: Schütze und Motorstarter - Halbleiter-Motor-
Steuergeräte und -Starter für Wechselspannungen (IEC 60947-4-2:2020)
Appareillage à basse tension - Partie 4-2: Contacteurs et démarreurs de moteurs -
Gradateurs et démarreurs à semiconducteurs de moteurs à courant alternatif (IEC 60947
-4-2:2020)
Ta slovenski standard je istoveten z: EN IEC 60947-4-2:2023
ICS:
29.130.20 Nizkonapetostne stikalne in Low voltage switchgear and
krmilne naprave controlgear
SIST EN IEC 60947-4-2:2023 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN IEC 60947-4-2:2023

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SIST EN IEC 60947-4-2:2023


EUROPEAN STANDARD EN IEC 60947-4-2

NORME EUROPÉENNE

EUROPÄISCHE NORM March 2023
ICS 29.130.20 Supersedes EN 60947-4-2:2012
English Version
Low-voltage switchgear and controlgear - Part 4-2: Contactors
and motor-starters - Semiconductor motor controllers, starters
and soft-starters
(IEC 60947-4-2:2020)
Appareillage à basse tension - Partie 4-2: Contacteurs et Niederspannungsschaltgeräte - Teil 4-2: Schütze und
démarreurs de moteurs - Gradateurs, démarreurs et Motorstarter - Halbleiter-Motor-Steuergeräte, Starter und
démarreurs progressifs à semiconducteurs de moteurs Sanftstarter
(IEC 60947-4-2:2020) (IEC 60947-4-2:2020)
This European Standard was approved by CENELEC on 2023-01-11. 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 60947-4-2:2023 E

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SIST EN IEC 60947-4-2:2023
EN IEC 60947-4-2:2023 (E)
European foreword
The text of document 121A/353/FDIS, future edition 4 of IEC 60947-4-2, 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 60947-4-2:2023.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2023-10-11
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2026-01-11
document have to be withdrawn

This document supersedes EN 60947-4-2:2012 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.
This document has been prepared under a Standardization Request given to CENELEC by the
European Commission and the European Free Trade Association.
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 60947-4-2:2020 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 60034-30-1 NOTE Approved as EN 60034-30-1
IEC 60068-2-2:2007 NOTE Approved as EN 60068-2-2:2007 (not modified)
IEC 60079 (series) NOTE Approved as EN IEC 60079-7 (series)
IEC 60085:2007 NOTE Approved as EN 60085:2008 (not modified)
IEC 60269-1:2006 NOTE Approved as EN 60269-1:2007 (not modified)
IEC 60364-1 NOTE Approved as HD 60364-1
IEC 60664 (series) NOTE Approved as EN 60664 (series)
IEC 60947-2 NOTE Approved as EN 60947-2
IEC 60947-3 NOTE Approved as EN IEC 60947-3
IEC 60947-4-1 NOTE Approved as EN IEC 60947-4-1
IEC 60947-4-3 NOTE Approved as EN 60947-4-3
2

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SIST EN IEC 60947-4-2:2023
EN IEC 60947-4-2:2023 (E)
IEC 60990:2016 NOTE Approved as EN 60990:2016 (not modified)
IEC 61000-4 (series) NOTE Approved as EN 61000-4 (series)
IEC 61032 NOTE Approved as EN 61032
IEC 61800 (series) NOTE Approved as EN 61800 (series)
IEC 62443 (series) NOTE Approved as EN IEC 62443 (series)
IEC 62477-1:2012 NOTE Approved as EN 62477-1:2012 (not modified) +A11:2014
IEC 62683-1 NOTE Approved as EN 62683-1
IEC/TR 63201 NOTE Approved as CLC IEC/TR 63201
3

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SIST EN IEC 60947-4-2:2023
EN IEC 60947-4-2:2023 (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.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60034-1 2017 Rotating electrical machines - Part 1: - -
Rating and performance
IEC 60445 - Basic and safety principles for man- EN IEC 60445 -
machine interface, marking and
identification - Identification of equipment
terminals, conductor terminations and
conductors
IEC 60715 - Dimensions of low-voltage switchgear and EN 60715 -
controlgear - Standardized mounting on
rails for mechanical support of switchgear,
controlgear and accessories
IEC 60730-1 - Automatic electrical controls - Part 1: - -
General requirements
IEC 60947-1 2020 Low-voltage switchgear and controlgear - EN IEC 60947-1 2021
Part 1: General rules
IEC 61000-3-2 - Electromagnetic compatibility (EMC) - Part EN IEC 61000-3-2 -
3-2: Limits - Limits for harmonic current
emissions (equipment input current 16 ≤ A
per phase)
IEC 61000-3-3 - Electromagnetic compatibility (EMC) - Part EN 61000-3-3 -
3-3: Limits - Limitation of voltage changes,
voltage fluctuations and flicker in public
low-voltage supply systems, for equipment
with rated current ≤ 16 A per phase and
not subject to conditional connection
IEC 61000-3-11 - Electromagnetic compatibility (EMC) - Part EN IEC 61000-3-11 -
3-12: Limits - Limitation of voltage
changes, voltage fluctuations and flicker in
public low-voltage supply systems -
Equipment with rated current ≤ 75 A and
subject to conditional connection
4

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SIST EN IEC 60947-4-2:2023
EN IEC 60947-4-2:2023 (E)
IEC 61000-3-12 - Electromagnetic compatibility (EMC) - Part EN 61000-3-12 -
3-12: Limits - Limits for harmonic currents
produced by equipment connected to
public low-voltage systems with input
current >16 A and ≤ 75 A per phase
IEC 61140 2016 Protection against electric shock - EN 61140 2016
Common aspects for installation and
equipment
CISPR 11 2015 Industrial, scientific and medical equipment EN 55011 2016
- Radio-frequency disturbance
characteristics - Limits and methods of
measurement
+ A1 2016  + A1 2017
- -  + A11 2020
ISO 2859-1 1999 Sampling procedures for inspection by - -
attributes - Part 1: Sampling schemes
indexed by acceptance quality limit (AQL)
for lot-by-lot inspection

5

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SIST EN IEC 60947-4-2:2023

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SIST EN IEC 60947-4-2:2023



IEC 60947-4-2

®


Edition 4.0 2020-06




INTERNATIONAL



STANDARD




NORME


INTERNATIONALE











Low-voltage switchgear and controlgear –

Part 4-2: Contactors and motor-starters – Semiconductor motor controllers,

starters and soft-starters



Appareillage à basse tension –

Partie 4-2: Contacteurs et démarreurs de moteurs – Gradateurs, démarreurs et


démarreurs progressifs à semiconducteurs de moteurs













INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE


INTERNATIONALE




ICS 29.130.20 ISBN 978-2-8322-8451-3




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 60947-4-2:2023
– 2 – IEC 60947-4-2:2020 © IEC 2020
CONTENTS
FOREWORD . 7
INTRODUCTION . 9
1 Scope . 10
2 Normative references . 11
3 Terms, definitions, symbols and abbreviated terms . 12
3.1 Terms and definitions . 12
3.1.1 Terms and definitions concerning the types of semiconductor motor
controllers and starters . 12
3.1.2 Terms and definitions concerning semiconductor motor controllers and
starters . 14
3.1.3 Terms and definitions concerning safety aspects . 17
3.1.4 Alphabetical index of terms . 18
3.2 Symbols and abbreviated terms . 20
4 Classification . 20
5 Characteristics of semiconductor motor controllers and starters . 20
5.1 Summary of characteristics . 20
5.2 Type of equipment . 21
5.2.1 Kind of equipment . 21
5.2.2 Number of poles . 21
5.2.3 Kind of current . 21
5.2.4 Interrupting medium (air, vacuum, etc.) . 21
5.2.5 Operating conditions of the equipment . 21
5.3 Rated and limiting values for main circuits . 22
5.3.1 Rated voltages . 22
5.3.2 Currents. 24
5.3.3 Rated frequency . 25
5.3.4 Duty cycle values and sequences . 25
5.3.5 Normal load and overload characteristics . 25
5.3.6 Rated conditional short-circuit current . 27
5.3.7 Semiconductor motor controller power losses . 27
5.4 Utilization category . 28
5.4.1 General. 28
5.4.2 Assignment of ratings based on the results of tests . 28
5.5 Control circuits . 29
5.6 Auxiliary circuits . 29
5.7 Characteristics of relays and releases (overload relays). 29
5.7.1 Summary of characteristics . 29
5.7.2 Types of relay or release . 30
5.7.3 Characteristic values . 30
5.7.4 Designation and current settings of overload relays . 31
5.7.5 Time-current characteristics of overload relays . 31
5.7.6 Influence of ambient air temperature . 32
5.8 Coordination with short-circuit protective devices (SCPD) . 32
6 Product information . 32
6.1 Nature of information . 32
6.2 Marking . 34

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SIST EN IEC 60947-4-2:2023
IEC 60947-4-2:2020 © IEC 2020 – 3 –
6.3 Instructions for installation, operation, maintenance, decommissioning and
dismantling . 34
6.4 Environmental information . 34
7 Normal service, mounting and transport conditions . 35
7.1 Normal service conditions . 35
7.1.1 Ambient air temperature . 35
7.1.2 Altitude . 35
7.1.3 Atmospheric conditions . 35
7.1.4 Shock and vibrations. 35
7.2 Conditions during transport and storage . 35
7.3 Mounting . 35
7.4 Electrical system disturbances and influences . 35
8 Constructional and performance requirements . 36
8.1 Constructional requirements . 36
8.1.1 General. 36
8.1.2 Materials . 36
8.1.3 Current-carrying parts and their connections . 37
8.1.4 Clearances and creepage distances . 37
8.1.5 Actuator . 37
8.1.6 Indication of the contact position . 37
8.1.7 Additional requirements for equipment suitable for isolation . 37
8.1.8 Terminals . 37
8.1.9 Additional requirements for equipment provided with a neutral pole . 38
8.1.10 Provisions for protective earthing . 38
8.1.11 Enclosures for equipment . 38
8.1.12 Degrees of protection of enclosed equipment. 38
8.1.13 Conduit pull-out, torque and bending with metallic conduits . 38
8.1.14 Limited energy source . 38
8.1.15 Stored charge energy circuit . 40
8.1.16 Fault and abnormal conditions . 40
8.1.17 Short-circuit and overload protection of ports . 41
8.2 Performance requirements . 41
8.2.1 Operating conditions . 41
8.2.2 Temperature-rise . 46
8.2.3 Dielectric properties . 47
8.2.4 Normal load and overload performance requirements . 48
8.2.5 Coordination with short-circuit protective devices . 53
8.3 EMC requirements . 54
8.3.1 General. 54
8.3.2 Immunity . 54
8.3.3 Emission . 56
9 Tests . 56
9.1 Kinds of tests . 56
9.1.1 General. 56
9.1.2 Type tests . 56
9.1.3 Routine tests . 57
9.1.4 Sampling tests . 57
9.1.5 Special tests . 57
9.2 Compliance with constructional requirements . 58

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SIST EN IEC 60947-4-2:2023
– 4 – IEC 60947-4-2:2020 © IEC 2020
9.2.1 General. 58
9.2.2 Electrical performance of screwless-type clamping units . 58
9.2.3 Ageing test for screwless-type clamping units . 59
9.2.4 Limited energy source test . 59
9.2.5 Breakdown of components . 59
9.2.6 Wire flexing test . 60
9.3 Compliance with performance requirements . 60
9.3.1 Test sequences . 60
9.3.2 General test conditions . 61
9.3.3 Performance under no load, normal load, and overload conditions . 61
9.3.4 Performance under short-circuit conditions . 72
9.4 EMC tests . 75
9.4.1 General. 75
9.4.2 EMC immunity tests . 76
9.4.3 EMC emission tests . 76
9.5 Routine and sampling tests . 79
9.5.1 General. 79
9.5.2 Operation and operating limits . 79
9.5.3 Dielectric tests . 79
Annex A (normative) Marking and identification of terminals . 81
A.1 General . 81
A.2 Marking and identification of terminals of semiconductor controllers and
starters . 81
A.2.1 Marking and identification of terminals of main circuits . 81
A.2.2 Marking and identification of terminals of control circuits. 81
A.3 Marking and identification of terminals of overload relays . 81
Annex B (xxx) . 82
Annex C (normative) Coordination at the crossover current between the starter and
associated SCPD . 83
C.1 General and definitions . 83
C.1.1 General. 83
C.1.2 Terms and definitions . 83
C.2 Condition for the test for the verification of coordination at the crossover
current by a direct method . 83
C.3 Test currents and test circuits . 83
C.4 Test procedure and results to be obtained . 84
C.4.1 Test procedure . 84
C.4.2 Results to be obtained . 84
C.5 Verification of coordination at the crossover current by an indirect method . 84
C.5.1 General. 84
C.5.2 Test for I . 84
cd
C.5.3 Time-current characteristic withstand capability of controllers/starters . 85
Annex D (xxx) . 87
Annex E (xxx) . 88
Annex F (informative) Operating capability . 89
Annex G (informative) Rated operational currents and rated operational powers of
switching devices for electrical motors . 93
G.1 General . 93
G.2 Rated operational powers and rated operational currents . 93

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SIST EN IEC 60947-4-2:2023
IEC 60947-4-2:2020 © IEC 2020 – 5 –
Annex H (xxx) . 97
Annex I (normative) Modified test circuit for short-circuit testing of semiconductor
motor controllers and starters . 98
Annex J (xxx) . 100
Annex K (xxx) . 101
Annex L (normative) Examples of overvoltage category reduction . 102
L.1 General . 102
L.2 Insulation to the surroundings . 102
L.2.1 Circuits connected directly to the supply mains . 102
L.2.2 Insulation between circuits . 103
Annex M (xxx) . 107
Annex N (normative) Additional requirements and tests for equipment with protective
separation . 108
N.1 General . 108
N.2 Definitions. 108
N.3 Requirements . 108
N.3.1 Test method for implementing protective impedance . 108
N.3.2 Touch current measurement . 109
Bibliography . 111

Figure 1 – Semiconductor motor control devices . 13
Figure 2 – Connecting methods . 24
Figure 3 – Thermal memory test .
...