IEC 61204-3:2011

Low voltage power supplies, d.c. output - Part 3: Electromagnetic compatibility (EMC)

IEC 61204-3:2011 specifies electromagnetic compatibility (EMC) requirements for power supply units (PSUs) providing d.c. output(s) with or without auxiliary a.c. output(s), operating from a.c. or d.c. source voltages up to 600 V a.c. or 1 000 V d.c. The main changes with respect to the previous edition are listed below:
- Update of the scope to align with IEC 61204-7.
- Update of the normative references to the latest editions.
- Change of the definitions of environments to align with the latest editions of the applicable normative references.
- Revision of the applicability of tests to different power supply technologies.
- Revision of the emission limits and requirements to align with the latest editions of the applicable normative references.
- Revision of the immunity limits and requirements to align with the latest editions of the applicable normative references.
- Clarification of the different classes of PSU.

Alimentations basse tension, sortie continue - Partie 3: Compatibilité électromagnétique (CEM)

La CEI 61204-3:2011 spécifie les exigences de compatibilité électromagnétique (CEM) pour les alimentations générant des tensions continues avec ou sans tension(s) alternative(s) auxiliaire(s), et qui sont elles-mêmes alimentées par des sources alternatives ou continues ne dépassant pas 600 V alternatif ou 1 000 V continu. Les modifications principales par rapport à l'édition précédente sont les suivantes.
- Mise à jour du domaine d'application pour l'aligner avec la CEI 61204-7.
- Mise à jour des références normatives pour mentionner les dernières éditions.
- Modifications des définitions des environnements pour les aligner avec celles des dernières versions des références normatives applicables.
- Révision de l'applicabilité des essais aux différentes technologies d'alimentation.
- Révisions des limites et des exigences relatives aux émissions pour les aligner avec celles des dernières versions des références normatives applicables.
- Révisions des limites et des exigences relatives à l'immunité pour les aligner avec celles des dernières versions des références normatives applicables.
- Clarification des différentes classes d'alimentations.

General Information

• Status: Published
• Publication Date: 21-Jun-2011
• ICS: 29.200 - Rectifiers. Convertors. Stabilized power supply
• ICS: 33.100.01 - Electromagnetic compatibility in general
• Technical Committee: SC 22E - Stabilized power supplies
• Drafting Committee: MT 5 - TC 22/SC 22E/MT 5
• Current Stage: DELPUB - Deleted Publication
• Completion Date: 28-Oct-2016

Relations

• Revises: IEC 61204-3:2000 - Low-voltage power supplies, d.c. output - Part 3: Electromagnetic compatibility (EMC)
• Effective Date: 05-Sep-2023
• Revised: IEC 61204-3:2016 - Low-voltage switch mode power supplies - Part 3: Electromagnetic compatibility (EMC)
• Effective Date: 05-Sep-2023
• Revises: IEC 61204-3:2000/COR1:2000 - Corrigendum 1 - Low-voltage power supplies, d.c. output - Part 3: Electromagnetic compatibility (EMC)
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 61204-3 ®
Edition 2.0 2011-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Low-voltage power supplies, d.c. output –
Part 3: Electromagnetic compatibility (EMC)

Alimentations basse tension, sortie continue –
Partie 3: Compatibilité électromagnétique (CEM)

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IEC 61204-3 ®
Edition 2.0 2011-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Low-voltage power supplies, d.c. output –
Part 3: Electromagnetic compatibility (EMC)

Alimentations basse tension, sortie continue –
Partie 3: Compatibilité électromagnétique (CEM)

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX W
ICS 29.200; 33.100 ISBN 978-2-88912-510-4

– 2 – 61204-3  IEC:2011
CONTENTS
FOREWORD . 4
1 Scope and object . 6
1.1 Scope . 6
1.1.1 Equipment covered by this standard . 6
1.1.2 Additional requirements . 6
1.1.3 Exclusions . 6
1.1.4 Types of power supply . 7
1.2 Object . 7
2 Normative references. 7
3 Terms and definitions . 9
4 Applicability of tests to different PSU technologies . 13
5 General requirements and test conditions . 13
5.1 General requirements . 13
5.2 Test conditions . 13
6 Emission requirements . 13
6.1 Low frequency phenomena (f ≤ 9 kHz; a.c. input only) . 14
6.1.1 Commutation notches . 14
6.1.2 Current harmonics and interharmonics . 14
6.1.3 Voltage fluctuations and flicker. 14
6.2 High frequency conducted emission . 15
6.2.1 High frequency conducted emission for input power ports . 15
6.2.2 High frequency conducted emission for d.c. output power ports . 15
6.3 High frequency radiated emission . 15
6.3.1 Radiated disturbance measurements . 15
6.3.2 Measurement of disturbance power . 16
6.3.3 Restrictions for the application of interference power measurement . 17
7 Immunity requirements . 17
7.1 Performance criteria . 17
7.2 Basic immunity requirements, high frequency disturbances . 18
7.2.1 Immunity level for residential, commercial, and light industrial
environment. . 18
7.2.2 Immunity level for industrial environment . 21
8 Configurations and combinations of power supplies . 24
8.1 Modular PSUs . 24
8.2 Power supply systems . 24
8.3 Power supply installations . 25
8.4 Distributed power supplies . 25
8.5 Power supplies in parallel or in series . 25
9 Power supply families . 25
10 Statistical aspects . 25
11 Safety aspects . 25
12 Test report . 26
Annex A (normative) Guidelines on the classification of PSUs . 27
Annex B (informative) Commutation notches . 29
Annex C (informative) Calculation and simulation of the input current harmonics . 30

61204-3  IEC:2011 – 3 –
Annex D (informative) Special considerations for d.c./d.c. converters . 31
Annex E (informative) Critical frequency for high frequency power measurement . 33
Annex F (normative) Guidelines on power supply families . 34
Annex G (informative) Summary of classification of environments and limits . 35
Annex H (normative)  Emission limits . 37
Bibliography . 39

Figure 1 – Test set-up for the measurement of disturbance power . 17

Table 1 – Criteria to prove the performance of a PSU against EM disturbances . 18
Table 2 – Immunity – Enclosure port – Residential, commercial and light industrial
environment . 19
Table 3 – Immunity – Ports for signal lines and control lines . 19
Table 4 – Immunity – DC input and output power ports . 20
Table 5 – Immunity – AC input power ports – Residential, commercial and light
industrial environment . 21
Table 6 – Immunity – Enclosure port – Industrial environment . 22
Table 7 – Immunity – Ports for signal lines and control lines – Industrial environment . 22
Table 8 – Immunity – DC input and output power ports – Industrial environment . 23
Table 9 – Immunity – AC input power ports – Industrial environment . 24
Table A.1 – Classification of power supplies and the relevant EMC standards . 28
Table D.1 – Immunity – DC input power ports – Input category a. 31
Table D.2 – Immunity – DC input power ports – Input category b. 32
Table D.3 – Immunity – Enclosure port – Input categories a and b . 32
Table H.1 – Limits of mains terminal disturbance voltage (a.c. input port) . 37
Table H.2 – Limits of mains terminal disturbance voltage (d.c. input and d.c. output
power port) . 37
Table H.3 – Limits for electromagnetic radiation/interference power disturbance (all field
strength limits refer to quasi-peak measurements) . 38
Table H.4 – Disturbance power limits for the frequency range 30 to 300 MHz . 38

– 4 – 61204-3  IEC:2011
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
LOW-VOLTAGE POWER SUPPLIES, D.C. OUTPUT –

Part 3: Electromagnetic compatibility (EMC)

FOREWORD
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