EN IEC 60947-4-2:2023/A1:2024

SLOVENSKI STANDARD
SIST EN IEC 60947-4-2:2023/oprA1:2023
01-september-2023
Nizkonapetostne stikalne in krmilne naprave - 4-2. del: Kontaktorji in motorski
zaganjalniki - Polprevodniški krmilniki motorjev, zaganjalniki motorjev in mehki
zaganjalniki na izmenični tok - Dopolnilo A1
Amendment 1 - Low-voltage switchgear and controlgear - Part 4-2: Contactors and
motor-starters - Semiconductor motor controllers, starters and soft-starters
Niederspannungsschaltgeräte - Teil 4-2: Schütze und Motorstarter - Halbleiter-Motor-
Steuergeräte, Starter und Sanftstarter
Amendement 1 - Appareillage à basse tension - Partie 4-2: Contacteurs et démarreurs
de moteurs - Gradateurs, démarreurs et démarreurs progressifs de moteurs à
semiconducteurs
Ta slovenski standard je istoveten z: EN IEC 60947-4-2:2023/prA1:2023
ICS:
29.130.20 Nizkonapetostne stikalne in Low voltage switchgear and
krmilne naprave controlgear
SIST EN IEC 60947-4-2:2023/oprA1:2023 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

SIST EN IEC 60947-4-2:2023/oprA1:2023

SIST EN IEC 60947-4-2:2023/oprA1:2023
121A/562/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 60947-4-2/AMD1 ED4
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2023-07-21 2023-10-13
SUPERSEDES DOCUMENTS:
121A/533/CD, 121A/545A/CC
IEC SC 121A : LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR
SECRETARIAT: SECRETARY:
France Mr Michaël LAHEURTE
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:

SC 22G
Other TC/SCs are requested to indicate their interest, if
any, in this CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft
for Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of
which they are aware and to provide supporting documentation.
Recipients of this document are invited to submit, with their comments, notification of any relevant “In Some
Countries” clauses to be included should this proposal proceed. Recipients are reminded that the CDV stage is
the final stage for submitting ISC clauses. (SEE AC/22/2007 OR NEW GUIDANCE DOC).

TITLE:
Amendment 1 - Low-voltage switchgear and controlgear – Part 4-2: Contactors and motor-
starters – Semiconductor motor controllers, starters and soft-starters

PROPOSED STABILITY DATE: 2027
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SIST EN IEC 60947-4-2:2023/oprA1:2023
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NOTE FROM TC/SC OFFICERS:
SC121A Officers support circulation of CDV for project IEC 60947-4-2/AMD1 ED4.
Secretary Note: NC experts are kindly requested to refer their comments to line number.

SIST EN IEC 60947-4-2:2023/oprA1:2023
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1 INTERNATIONAL ELECTROTECHNICAL COMMISSION
2 ____________
4 LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR –
6 Part 4-2: Contactors and motor-starters –
7 Semiconductor motor controllers, starters and soft-starters
9 AMENDMENT 1
11 FOREWORD
12 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
13 all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
14 co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
15 in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
16 Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
17 preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
18 may participate in this preparatory work. International, governmental and non-governmental organizations liaising
19 with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
20 Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
21 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
22 consensus of opinion on the relevant subjects since each technical committee has representation from all
23 interested IEC National Committees.
24 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
25 Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
26 Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
27 misinterpretation by any end user.
28 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
29 transparently to the maximum extent possible in their national and regional publications. Any divergence between
30 any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
31 5) IEC itself does not provide any attestation of conformity. Independent certification bo dies provide conformity
32 assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
33 services carried out by independent certification bodies.
34 6) All users should ensure that they have the latest edition of this publication.
35 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
36 members of its technical committees and IEC National Committees for any personal injury, property damage or
37 other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
38 expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
39 Publications.
40 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
41 indispensable for the correct application of this publication.
42 9) Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
43 rights. IEC shall not be held responsible for identifying any or all such patent rights.
44 Amendment 1 to IEC 60947-4-2:2020 has been prepared by subcommittee 121A: Low-voltage
45 switchgear and controlgear, of IEC technical committee 121: Switchgear and controlgear and
46 their assemblies for low voltage.
47 This amendment includes the following significant technical changes with respect to the current
48 edition:
49 - Requirement for starter intended to be used with high efficiency motors
50 - Requirements and tests for abnormal conditions equivalent to Annex DVE of the UL
51 version,
52 - Alignment to the EMC environments defined in IEC TR 63216 and more detailed
53 emission limit requirements,
54 - Reference to IEC TS 63058 for environmental information,
55 - Reference to IEC 63404 for the integration of radio communication

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56 The text of this Amendment is based on the following documents:
Draft Report on voting
121A/XX/FDIS 121A/XX/RVD
58 Full information on the voting for its approval can be found in the report on voting indicated in
59 the above table.
60 The language used for the development of this Amendment is English.
61 This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
62 accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
63 at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
64 described in greater detail at www.iec.ch/publications/.
65 The committee has decided that the contents of this document will remain unchanged until the
66 stability date indicated on the IEC website under webstore.iec.ch in the data related to the
67 specific document. At this date, the document will be
68 • reconfirmed,
69 • withdrawn,
70 • replaced by a revised edition, or
71 • amended.
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74 CONTENTS
76 FOREWORD. 3
77 1 Scope . 6
78 2 Normative references . 6
79 5.4 Utilization category. 6
80 5.4.1 General . 6
81 5.6 Auxiliary circuits . 6
82 6.2 Marking . 6
83 6.3 Instructions for installation, operation, maintenance, decommissioning and
84 dismantling . 7
85 6.4 Environmental information . 7
86 7.1.2 Altitude . 7
87 8.1.1 General . 7
88 8.1.16 Fault and abnormal conditions . 7
89 8.3.1  General . 9
90 8.3.3   Emission . 9
91 9.1.4 Sampling tests . 9
92 9.2.7 Abnormal operating tests. 10
93 9.3.1 Test sequences. 11
94 9.4.1  General . 12
95 Table 17 – Terminal disturbance voltage limits for conducted radio-frequency emission
96 (AC mains power port) . 13
97 C.5 Verification of co-ordination at the crossover current by an indirect method
98 for type “2” coordination. . 13
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104 LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR –
106 Part 4-2: Contactors and motor-starters –
107 Semiconductor motor controllers, starters and soft-starters
109 Amendment 1
112 1 Scope
113 Delete footnote 1.
114 2 Normative references
115 Add the following reference to the list:
116 IEC 63404:2023 , Integration method of radiocommunication device into an equipment
117 5.3.5.4.1 Starting characteristics of squirrel cage and hermetic refrigeration motors
118 Replace the third paragraph by the following:
119 Two directions of rotation are not covered by this document.
120 Delete the fourth paragraph.
121 5.4 Utilization category
122 5.4.1 General
123 Replace the second paragraph by the following:
124 For semiconductor motor controllers, starters and softstarters, the utilization categories are
125 given in Table 1.
126 5.6 Auxiliary circuits
127 Delete the second sentence of the third paragraph.
128 6.2 Marking
129 Replace in the third paragraph “k)” by “j)”.
130 Add the following new paragraph at the end of the existing text.
131 When a radiocommunication device is embedded into the equipment, additional information
132 according to 6.1 and 6.2 of IEC 63404:2023 applies.
___________
Under preparation. Stage at the time of publication: IEC/CDM 63404:2022

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133 6.3 Instructions for installation, operation, maintenance, decommissioning and
134 dismantling
135 Add after the fourth paragraph the following:
136 The instructions shall also cover other specific application limitations, when applicable, such as
137 altitude above 1 000 m and two direction starters.
138 When the embedded radiocommunication device can be upgraded, additional information
139 according to 6.3 of IEC 63404:2023 applies.
140 6.4 Environmental information
141 Replace the existing text by the following:
142 When declared, the material declarations shall be provided according to IEC TS 63058.
143 Hazardous substances used by design in the equipment shall be declared in the product
144 documentation. See also 8.1.1.
145 IEC TS 63058 replaces Annex O of IEC 60947-1:2020. It should be considered carefully
146 especially for substitution or reduction in use of hazardous substances or if not possible for
147 providing measures to prevent emission and contact with them.
148 NOTE IEC TS 63058 provides meth
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