prEN IEC 61851-21-1:2025
(Main)Conductive power and energy transfer systems for electric vehicles - Part 21-1: Electric vehicle on-board charger EMC requirements for conductive connection to AC/DC supply
Conductive power and energy transfer systems for electric vehicles - Part 21-1: Electric vehicle on-board charger EMC requirements for conductive connection to AC/DC supply
Systèmes de transfert d’énergie et de puissance conductive pour véhicules électriques - Partie 21-1: Exigences CEM relatives à la connexion conductive des chargeurs embarqués pour véhicules électriques à une alimentation en courant alternatif ou continu
Sistemi za prenos prevodne moči in energije za električna vozila - 21-1. del: Zahteve EMC za vgrajen napajalnik pri kabelski priključitvi na izmenično/enosmerno napajanje
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Standards Content (Sample)
SLOVENSKI STANDARD
01-december-2025
Sistemi za prenos prevodne moči in energije za električna vozila - 21-1. del:
Zahteve EMC za vgrajen napajalnik pri kabelski priključitvi na
izmenično/enosmerno napajanje
Conductive power and energy transfer systems for electric vehicles - Part 21-1: Electric
vehicle on-board charger EMC requirements for conductive connection to AC/DC supply
Systèmes de transfert d’énergie et de puissance conductive pour véhicules électriques -
Partie 21-1: Exigences CEM relatives à la connexion conductive des chargeurs
embarqués pour véhicules électriques à une alimentation en courant alternatif ou continu
Ta slovenski standard je istoveten z: prEN IEC 61851-21-1:2025
ICS:
43.120 Električna cestna vozila Electric road vehicles
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
69/1078/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 61851-21-1 ED2
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2025-10-10 2026-01-02
SUPERSEDES DOCUMENTS:
69/959/CD, 69/1075/CC
IEC TC 69 : ELECTRICAL POWER/ENERGY TRANSFER SYSTEMS FOR ELECTRICALLY PROPELLED ROAD VEHICLES AND
INDUSTRIAL TRUCKS
SECRETARIAT: SECRETARY:
Belgium Mr Peter Van den Bossche
OF INTEREST TO THE FOLLOWING COMMITTEES: HORIZONTAL FUNCTION(S):
TC 77,CISPR
ASPECTS CONCERNED:
Electromagnetic Compatibility
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TITLE:
Conductive power and energy transfer systems for electric vehicles - Part 21-1 Electric vehicle
on-board charger EMC requirements for conductive connection to AC/DC supply
PROPOSED STABILITY DATE: 2028
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.
You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without
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IEC CDV 61851-21-1 © IEC 2025
1 Conductive power and energy transfer systems for electric road
2 vehicles
3 – Part 21-1: Electric vehicle on-board charger EMC requirements
4 for conductive connection to an a.c./d.c. supply
IEC CDV 61851-21-1 © IEC 2025
6 CONTENTS
7 FOREWORD . 5
8 1 Scope . 7
9 2 Normative references . 7
10 3 Definitions . 9
11 4 General test conditions . 12
12 5 Test methods and requirements. 12
13 5.1 Test setup for vehicle in charging mode . 12
14 5.1.1 Host vehicle in charging mode 1 or mode 2 (AC power charging
15 without communication) . 12
16 5.1.2 Host vehicle in charging mode 3 (AC power charging with
17 communication) or mode 4 (DC power charging with communication) . 13
18 5.2 ESA test setup . 14
19 5.4 Immunity test methods . 14
20 5.4.1 General . 14
21 5.4.2 Function Performance Criteria . 15
22 5.4.3 Test Severity Levels . 15
23 5.4.4 Immunity to electrical fast transient/burst disturbances conducted
24 along a.c. and d.c. power lines . 15
25 5.4.5 Immunity to surges conducted along a.c. and d.c. power lines . 16
26 5.4.6 Immunity to electromagnetic radiated RF-fields . 19
27 5.4.7 Immunity to Pulses on Supply Lines . 24
28 5.5 Emission test methods . 29
29 5.5.1 Test conditions . 29
30 5.5.2 Emissions of Harmonics on a.c. power lines . 29
31 5.5.3 Emission of voltage changes, voltage fluctuations and flicker on a.c.
32 power lines . 31
33 5.5.4 High-frequency conducted disturbances on a.c. or d.c. power lines . 32
34 5.5.5 High-frequency radiated disturbances in the frequency range 30 –
35 1000 MHz . 37
36 5.5.6 High-frequency radiated disturbances in the frequency range 1000 –
37 6000 MHz . 41
38 5.5.7 Transient emission tests . 43
39 Annex A (normative) Artificial Network (AN), High Voltage Artificial Network (HV-AN),
40 Direct Current charging Artificial Networks (DC-charging-AN), Artificial Mains
41 Network (AMN) and Asymmetric Artificial Network (AAN). 44
42 A.1 General . 44
43 A.2 Artificial networks (AN) . 44
44 A.2.1 Component powered by LV . 44
45 A.2.2 Component powered by HV . 46
46 A.2.3 Direct Current charging Artificial Networks (DC-charging-AN) . 49
47 A.3 Artificial Mains networks (AMN) . 50
48 A.4 Asymmetric artificial networks (AAN) . 50
49 A.4.1 General . 50
50 A.4.2 Signal/control port with symmetric lines . 50
51 A.4.3 Wired network port with powerline communication on power lines . 51
52 A.4.4 Signal/control port with PLC on control pilot line . 52
53 A.4.5 Signal/control port with control pilot line . 53
IEC CDV 61851-21-1 © IEC 2025
54 Annex B (informative) Immunity of vehicles to low frequency phenomena conducted
55 along AC power lines . 55
56 B.1 General . 55
57 B.2 Electric vehicle charging equipment test . 56
58 B.3 ESA separated on-board charger test . 57
59 Annex C (informative) Spectral density of non-intentional emissions (NIE) in the
60 frequency range 9 kHz to 150 kHz . 58
61 C.1 Introduction of Integral Voltage Levels (IVL) for the limitation of the spectral
62 density of NIE . 58
63 C.2 Recommended maximum IVL for NIE . 59
67 List of Figures
68 Figure 1: Example for a typical test setup for electrical fast transient/ burst vehicle test . 16
69 Figure 2: Example for a typical test setup for vehicle in configuration “RESS charging
70 mode coupled to the power grid” - coupling between lines for a.c. (single phase) and
71 d.c. power lines. 17
72 Figure 3: Example for a typical test setup for vehicle in configuration “RESS charging
73 mode coupled to the power grid” - coupling between each line and earth for a. c.
74 (single phase) and d.c. power lines . 17
75 Figure 4: Example for a typical test setup for vehicle in configuration “RESS charging
76 mode coupled to the power grid” - coupling between lines for a c. (three phases) power
77 lines . 18
78 Figure 5: Example for a typical test setup for vehicle in configuration “RESS charging
79 mode coupled to the power grid” - coupling between each line and earth for a c. (three
80 phases) power lines . 18
81 Figure 6: Example for a typical test setup for vehicle with charging plug located at the
82 side of the vehicle (a.c./d.c. power charging without communication) . 20
83 Figure 7: Example for a typical test setup for vehicle with charging plug located at the
84 front / rear of the vehicle (a.c./ d.c. power charging without communication) . 21
85 Figure 8: Example for a typical test setup for vehicle with the charging plug located at
86 the side of the vehicle (a.c. or d.c. power charging with communication) . 22
87 Figure 9: Example for a typical test setup for vehicle with charging plug located at the
88 front / rear of the vehicle (a.c. or d.c. power charging with communication) . 23
89 Figure 10: Example for a typical test setup for vehicle in configuration “RESS charging
90 mode coupled to the power grid” - single phase charger test setup . 30
91 Figure 11: Example for a typical test setup for vehicle in configuration “RESS charging
92 mode coupled to the power grid” - three-phase charger test setup . 31
93 Figure 12: Example for a typical test setup for vehicle in configuration “RESS charging
94 mode coupled to the power grid” . 32
95 Figure 13: Example for a typical test setup for vehicle in configuration “RESS charging
96 mode coupled to the power grid” . 35
97 Figure 14: Example for a typical test setup for vehicle in configuration “RESS charging
98 mode coupled to the power grid” . 36
99 Figure 15: Example for a typical test setup for vehicle in configuration “RESS charging
100 mode coupled to the power grid” . 38
101 Figure 16: Example for a typical test setup for test configuration for ESAs involved in
102 RESS charging mode coupled to the power grid (example for biconical antenna) . 40
103 Figure 17: Example of a typical test setup for an ESA in RESS charging mode coupled
104 to the power grid in the frequency range 1000 – 6000 MHz . 43
IEC CDV 61851-21-1 © IEC 2025
105 Figure A. 1: Example of 5 µH AN schematic . 46
106 Figure A. 2: Characteristics of the AN impedance Z . 46
PB
107 Figure A. 3: Example of 5 μH HV-AN schematic . 48
108 Figure A. 4: Example of 5 μH HV-AN combination in a single shielded box . 49
109 Figure A. 5: Impedance matching network attached between HV-ANs and EUT . 50
110 Figure A. 6: Example of 5 μH / 50 Ω DC-charging-AN schematic . 51
111 Figure A. 7: Example of an AAN for signal/control port with symmetric lines (e.g. CAN) . 52
112 Figure A. 8: Example of AAN with wired network port with PLC on AC or DC powerlin
...
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