oSIST prEN IEC 61000-4-29:2025

SLOVENSKI STANDARD
01-marec-2025
Elektromagnetna združljivost (EMC) - 4-29. del: Preskusne in merilne tehnike -
Preskusi odpornosti proti upadom napetosti, kratkotrajnim prekinitvam in
odklonom napetosti za enosmerni (DC) napajalni priključek
Electromagnetic compatibility (EMC) - Part 4-29: Testing and measurement techniques -
Voltage dips, short interruptions and voltage variations on d.c. input power port immunity
tests
Elektromagnetische Verträglichkeit (EMV) - Teil 4-29: Prüf- und Messverfahren -
Prüfungen der Störfestigkeit gegen Spannungseinbrüche, Kurzzeitunterbrechungen und
Spannungsschwankungen an Gleichstrom-Netzeingängen
Compatibilité électromagnétique (CEM) - Partie 4-29: Techniques d'essai et de mesure -
Essais d'immunité aux creux de tension, coupures brèves et varations de tension sur les
accès d'alimentation en courant continu
Ta slovenski standard je istoveten z: prEN IEC 61000-4-29:2025
ICS:
33.100.20 Imunost Immunity
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

77A/1231/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 61000-4-29 ED2
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2025-01-03 2025-03-28
SUPERSEDES DOCUMENTS:
77A/1134/RR
IEC SC 77A : EMC - LOW FREQUENCY PHENOMENA
SECRETARIAT: SECRETARY:
France Mr Cédric LAVENU
OF INTEREST TO THE FOLLOWING COMMITTEES: HORIZONTAL FUNCTION(S):

ASPECTS CONCERNED:
Electromagnetic Compatibility
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
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TITLE:
Electromagnetic compatibility (EMC) - Part 4-29: Testing and measurement techniques -
Voltage dips, short interruptions and voltage variations on d.c. input power port immunity
tests
PROPOSED STABILITY DATE: 2025
NOTE FROM TC/SC OFFICERS:
electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions.
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IEC CDV 61000-4-29 ED2 © IEC 2024 2 77A/1231/CDV

1 CONTENTS
2 FOREWORD . 3
3 1 Scope . 5
4 2 Normative references . 5
5 3 Terms and definitions . 6
6 4 General . 6
7 5 Test levels . 7
8 6 Test generator . 8
9 6.1 Introduction . 8
10 6.2 Characteristics and performances of the generator . 8
11 6.2.1 General . 8
12 6.2.2 Specific characteristics for the generator operating in "low impedance"
13 conditions . 9
14 6.2.3 Specific characteristics for the generator operating in "high impedance"
15 conditions (short interruption) . 9
16 6.3 Verification of the characteristics of the generator. 10
17 6.3.1 Introduction . 10
18 6.3.2 Output voltage and voltage change . 10
19 6.3.3 Switching characteristics . 10
20 6.3.4 Peak inrush current drive capability . 10
21 6.3.5 Output impedance . 10
22 7 Test set-up . 11
23 8 Test procedure . 11
24 8.1 Introduction . 11
25 8.2 Laboratory reference conditions . 11
26 8.2.1 General . 11
27 8.2.2 Climatic conditions . 11
28 8.2.3 Electromagnetic conditions . 11
29 8.3 Execution of the test . 11
30 8.3.1 General . 11
31 8.3.2 Voltage dips and short interruptions . 12
32 8.3.3 Voltage variations . 12
33 9 Evaluation of test results . 12
34 10 Test report . 13
35 Annex A (informative) Example of test generators and test set-up . 14
36 Annex B (normative) Inrush current measurement. 16
37 B.1 Test generator peak inrush current drive capability . 16
38 B.2 EUT peak inrush current . 16
39 Annex C (informative) Description of the d.c. environment . 18
40 Bibliography . 19
42 Figure A.1 – Example of test generator based on two power sources with internal
43 switching . 14
44 Figure A.2 – Example of test generator based on a programmable power supply . 15
46 Table 1a – Preferred test levels and durations for voltage dips . 7
47 Table 1b – Preferred test levels and durations for short interruptions . 8
48 Table 1c – Preferred test levels and durations for voltage variations . 8
IEC CDV 61000-4-29 ED2 © IEC 2024 3 77A/1231/CDV

50 INTERNATIONAL ELECTROTECHNICAL COMMISSION
51 ____________
53 ELECTROMAGNETIC COMPATIBILITY (EMC) –
55 Part 4-29: Testing and measurement techniques – Voltage dips, short
56 interruptions and voltage variations on d.c. input power port immunity
57 tests
60 FOREWORD
61 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
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89 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
90 indispensable for the correct application of this publication.
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95 the latest information, which may be obtained from the patent database available at https://patents.iec.ch [and/or]
96 www.iso.org/patents. IEC shall not be held responsible for identifying any or all such patent rights.
97 IEC 61000-4-29 has been prepared by subcommittee 77A: EMC – Low frequency phenomena,
98 of IEC technical committee 77: Electromagnetic compatibility. It is an International Standard.
99 This standard forms part 4-29 of IEC 61000. It has the status of a basic EMC publication in
100 accordance with IEC Guide 107.
101 This second edition cancels and replaces the first edition published in 2000. This edition
102 constitutes a technical revision.
103 The text of this International Standard is based on the following documents:
Draft Report on voting
XX/XX/FDIS XX/XX/RVD
IEC CDV 61000-4-29 ED2 © IEC 2024 4 77A/1231/CDV

105 Full information on the voting for its approval can be found in the report on voting indicated in
106 the above table.
107 The language used for the development of this International Standard is English.
108 This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
109 accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
110 at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
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112 The committee has decided that the contents of this document will remain unchanged until the
113 stability date indicated on the IEC website under webstore.iec.ch in the data related to the
114 specific document. At this date, the document will be
115 • reconfirmed,
116 • withdrawn,
117 • replaced by a revised edition, or
118 • amended.
IEC CDV 61000-4-29 ED2 © IEC 2024 5 77A/1231/CD
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