ISO/FDIS 11452-1

Road vehicles — Component test methods for electrical disturbances from narrowband radiated electromagnetic energy — Part 1: General principles and terminology

ISO 11452-1:2015 specifies general conditions, defines terms, gives practical guidelines, and establishes the basic principles of the component tests used in the other parts of ISO 11452 for determining the immunity of electronic components of passenger cars and commercial vehicles to electrical disturbances from narrowband radiated electromagnetic energy, regardless of the vehicle propulsion system (e.g. spark-ignition engine, diesel engine, electric motor). The electromagnetic disturbances considered are limited to continuous narrowband electromagnetic fields. A wide frequency range (d.c. and 15 Hz to 18 GHz) is allowed for the immunity testing of the components in this and in the other parts of ISO 11452.

Véhicules routiers — Méthodes d'essai d'un équipement soumis à des perturbations électriques par rayonnement d'énergie électromagnétique en bande étroite — Partie 1: Principes généraux et terminologie

General Information

• Status: Not Published
• ICS: 33.100.20 - Immunity
• ICS: 43.040.10 - Electrical and electronic equipment
• Technical Committee: ISO/TC 22/SC 32 - Electrical and electronic components and general system aspects
• Drafting Committee: ISO/TC 22/SC 32 - Electrical and electronic components and general system aspects
• Current Stage: 5020 - FDIS ballot initiated: 2 months. Proof sent to secretariat
• Start Date: 07-Feb-2025
• Due Date: 07-Feb-2025
• Completion Date: 07-Feb-2025

Relations

• Revises: ISO 11452-1:2015 - Road vehicles — Component test methods for electrical disturbances from narrowband radiated electromagnetic energy — Part 1: General principles and terminology
• Effective Date: 06-Jun-2022

Standards Content (Sample)

FINAL DRAFT
International
Standard
ISO/TC 22/SC 32
Road vehicles — Component test
Secretariat: JISC
methods for electrical disturbances
Voting begins on:
from narrowband radiated
2025-02-07
electromagnetic energy —
Voting terminates on:
2025-04-04
Part 1:
General principles and terminology
Véhicules routiers — Méthodes d'essai d'un équipement soumis
à des perturbations électriques par rayonnement d'énergie
électromagnétique en bande étroite —
Partie 1: Principes généraux et terminologie
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
Reference number
FINAL DRAFT
International
Standard
ISO/TC 22/SC 32
Road vehicles — Component test
Secretariat: JISC
methods for electrical disturbances
Voting begins on:
from narrowband radiated
electromagnetic energy —
Voting terminates on:
Part 1:
General principles and terminology
Véhicules routiers — Méthodes d'essai d'un équipement soumis
à des perturbations électriques par rayonnement d'énergie
électromagnétique en bande étroite —
Partie 1: Principes généraux et terminologie
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
© ISO 2025
IN ADDITION TO THEIR EVALUATION AS
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
or ISO’s member body in the country of the requester.
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland Reference number
ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General aim and practical use . 6
5 General test conditions . 7
5.1 General .7
5.2 Test temperature .8
5.3 Supply voltage .8
5.3.1 Low voltage (LV) power supply .8
5.3.2 HV DC power supply (excluding charger) .8
5.3.3 Charger power supply (a.c. or d.c.) for HV battery .8
5.4 Modulation .8
5.5 Dwell time .9
5.6 Frequency step sizes .9
5.7 Definition of test severity levels .10
5.8 Test instrumentation uncertainties .10
6 Instrumentation . 10
6.1 Grounding and shielding .10
6.2 AN, HV-AN, AMN, and AAN .10
6.3 Power supply .11
6.3.1 LV power supply .11
6.3.2 HV DC power supply (excluding charger) .11
6.3.3 Charger power supply (a.c. or d.c.) .11
6.4 Load simulator .11
6.5 Test signal quality . .11
7 Test procedure .12
7.1 Test plan . 12
7.2 Test methods . 12
7.2.1 General . 12
7.2.2 Substitution. 12
7.2.3 Closed loop levelling . 13
7.2.4 Disturbance application process . . 13
7.3 Test report .14
Annex A (normative) Function performance status classification (FPSC) .15
Annex B (normative) Artificial network (AN), high voltage artificial network (HV-AN), artificial
mains network (AMN) and asymmetric artificial network (AAN) .18
Annex C (normative) Constant peak test level for amplitude modulation .27
Annex D (informative) Example of load simulator design .30
Annex E (informative) Broadband test signal generation .33
Annex F (informative) Remote/local grounding .42
Annex G (informative) Evaluation of test instrumentation uncertainties .44
Bibliography . 47

iii
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out through
ISO technical committees. Each member body interested in a subject for which a technical committee
has been established has the right to be represented on that committee. International organizations,
governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely
with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
of ISO document should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 32,
Electrical and electronic components and general system aspects.
This fifth edition cancels and replaces the fourth edition (ISO 11452-1:2015), which has been technically
revised.
The main changes are as follows:
— update of the frequency ranges in Table 1;
— update on modulations (type and frequency range);
— technical revision of Annex B;
— new Annex E on broadband test signal generation;
— new Annex F on remote / local grounding;
— new Annex G on evaluation of test instrumentation uncertainties.
A list of all parts in the ISO 11452 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.

iv
Introduction
In recent years, an increasing number of electronic devices for contro
...

ISO/pre FDIS 11452-1:2023(E)
ISO/TC 22/SC 32
Date: 2024-10
Secretariat: JISC
Date: 2025-01-24
Road vehicles — Component test methods for electrical disturbances
from narrowband radiated electromagnetic energy — —
Part 1:
General principles and terminology
Véhicules routiers — Méthodes d’essai d’und'essai d'un équipement soumis à des perturbations électriques par
rayonnement d’énergied'énergie électromagnétique en bande étroite — —
Partie 1: Principes généraux et terminologie
FDIS stage
ISO/DISFDIS 11452-1:2023(E2025(en)
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication
may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying,
or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO
at the address below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: + 41 22 749 01 11
EmailE-mail: [e-mail]
Website: www.iso.org
Published in Switzerland
ii © ISO 2023 – All rights reserved
ii
ISO/DISFDIS 11452-1:2023(E2025(en)
Contents
Foreword . vi
Introduction . vii
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General aim and practical use . 7
5 General test conditions . 8
5.1 General. 8
5.2 Test temperature . 8
5.3 Supply voltage . 9
5.4 Modulation . 9
5.5 Dwell time . 11
5.6 Frequency step sizes . 11
5.7 Definition of test severity levels . 12
5.8 Test instrumentation uncertainties . 12
6 Instrumentation . 12
6.1 Grounding and shielding . 12
6.2 AN, HV-AN, AMN, and AAN . 12
6.3 Power supply . 12
6.4 Load simulator . 13
6.5 Test signal quality . 13
7 Test procedure . 13
7.1 Test plan . 13
7.2 Test methods . 14
7.3 Test report . 17
Annex A (normative) Function performance status classification (FPSC) . 18
Annex B (normative) Artificial network (AN), high voltage artificial network (HV-AN), artificial
mains network (AMN) and asymmetric artificial network (AAN) . 21
Annex C (normative) Constant peak test level for amplitude modulation . 34
Annex D (informative) Example of load simulator design . 37
Annex E (informative) Broadband test signal generation . 41
Annex F (informative) Remote/local grounding . 54
Annex G (informative) Evaluation of test instrumentation uncertainties . 59
Bibliography . 62

Foreword . vi
Introduction . vii
1 Scope . 1
2 Normative references . 1
iii
ISO/DISFDIS 11452-1:2023(E2025(en)
3 Terms and definitions . 1
4 General aim and practical use . 6
5 General test conditions . 8
5.1 General. 8
5.2 Test temperature . 8
5.3 Supply voltage . 8
5.3.1 Vehicle Low Voltage (LV) power supply . 8
5.3.2 HV d.c. power supply (excluding charger) . 8
5.3.3 Charger power supply (a.c. or d.c.) for HV battery . 8
5.4 Modulation . 8
5.5 Dwell time . 10
5.6 Frequency step sizes . 10
5.7 Definition of test severity levels . 10
5.8 Disturbance application . 11
5.9 Measurement instrumentation uncertainties . 11
6 Instrumentation . 11
6.1 Grounding and shielding . 11
6.2 AN, AMN, and AAN . 11
6.3 Power supply . 11
6.3.1 LV power supply . 11
6.3.2 HV d.c. power supply (excluding charger) . 11
6.3.3 Charger power supply (a.c. or d.c.) . 11
6.4 Load simulator . 11
6.5 Test signal quality . 12
7 Test procedure . 12
7.1 Test plan . 12
7.2 Test methods . 12
7.2.1 General. 12
7.2.2 Substitution . 12
7.2.3 Closed loop levelling . 13
7.2.4 Disturbance application process . 13
7.3 Test report . 14
Annex A (normative) Function performance status classification . 15
A.1 General. 15
A.2 FPSC approach. 15
A.3 Essential elements of an FPSC . 15
A.4 FPSC approach example . 16
A.5 Classification of test severity levels . 17
Annex B (normative) Artificial Network (AN), High Voltage Artificial Network (HV-AN), Artificial
Mains Network (AMN) and Asymmetric Artificial Network (AAN) . 18
B.1 General. 18
B.2 Artificial networks (AN) . 18
B.3 Artificial mains networks (AMN) . 22
B.4 Asymmetric artificial networks (AAN) . 22
iv © ISO 2023 – All rights reserved
iv
ISO/DISFDIS 11452-1:2023(E2025(en)
Annex C (informative) Constant peak test level for amplitude modulation . 27
C.1 General. 27
C.2 Unmodulated signal .
...