SIST-V CLC Guide 34:2024

SLOVENSKI STANDARD
01-april-2024
Nadomešča:
SIST-V CLC Guide 24:2010
SIST-V CLC Guide 25:2010
Vodilo za pripravo in uporabo harmoniziranih in neharmoniziranih standardov
EMC
Guide to the drafting and use of harmonized and non-harmonized EMC standards
Leitfaden für den Entwurf und die Verwendung von harmonisierten und nicht
harmonisierten EMV-Normen
Ta slovenski standard je istoveten z: CLC Guide 34:2024
ICS:
01.120 Standardizacija. Splošna Standardization. General
pravila rules
33.100.01 Elektromagnetna združljivost Electromagnetic compatibility
na splošno in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

CENELEC
GUIDE
Guide to the drafting and use
of harmonized and non-
harmonized EMC standards
Edition 1, 2024-02
This first edition of CENELEC Guide 34, prepared by CENELEC Technical Committee TC 210, Electromagnetic
Compatibility (EMC), was approved by the CENELEC Technical Board by correspondence on 2023-12-13.

European Committee for Electrotechnical Standardization

Rue de la Science, 23
B – 1040 Brussels
Tel: +32 2 550 08 11
Fax: +32 2 550 08 19
www.cencenelec.eu
Contents Page
Foreword .5
Introduction .6
1 Scope .7
2 Normative references .7
3 Terms and definitions .7
4 Types of EMC publications .9
4.1 General .9
4.2 Basic EMC standards . 10
4.2.1 Basic EMC standards for measurement and/or test purposes . 10
4.2.2 Other types of basic EMC documents . 11
4.3 Generic EMC standards . 11
4.4 Product specific EMC standards . 12
4.4.1 Product family EMC standards . 12
4.4.2 Dedicated Product EMC standards . 13
5 Electromagnetic phenomena considered in EMC standards. . 13
5.1 Phenomena relevant for electromagnetic emission . 13
5.2 Phenomena relevant for electromagnetic immunity . 13
5.2.1 General . 13
5.2.2 Conducted low frequency phenomena . 14
5.2.3 Radiated low frequency field phenomena (below 9 kHz) . 14
5.2.4 Conducted high frequency phenomena . 14
5.2.5 Radiated high frequency field phenomena (above and including 9 kHz) . 14
5.2.6 Other phenomena . 15
6 Particular aspects for the drafting of Harmonized EMC standards . 15
6.1 General . 15
6.2 Obligations for Harmonized EMC standards . 15
6.2.1 Pre-requisite . 15
6.2.2 European foreword . 15
6.2.3 Scope . 16
6.2.4 Normative references . 16
6.2.5 Definitions . 17
6.2.6 Technical requirements . 17
6.2.7 Annex ZA . 17
6.2.8 Annex ZZ . 18
6.2.9 Checklist for harmonized standards . 18
6.3 Restrictions for Harmonized EMC standards . 18
6.4 Coordinating role of CENELEC TC 210 for Harmonized EMC standards . 19
6.5 Approval procedure for Harmonized EMC standards . 20
7 Use of EMC standards for EMC conformity assessments . 20
7.1 Criteria for the selection of EMC standards . 20
7.2 Application of EMC standards for particular product families or products . 21
7.3 Harmonized EMC standards cited in the OJEU under European Directives. 24
Annex A (informative) Low frequency emission requirements – State of the standardization . 26
A.1 Introduction . 26
A.2 Standardization situation and evolution . 26
A.3 Generic standards . 27
Annex B (informative) Additional information on references in EMC standards to other
standards . 28
B.1 General . 28
B.2 Prevailing references . 28
B.3 Additional information on procedures used in CENELEC when international standards
(e.g. IEC standards) are endorsed as European standards . 28
Annex C (informative) Multifunction equipment . 30
Annex D (informative) Radio enabled products or combined equipment . 31
D.1 General . 31
D.2 Terms and definitions . 31
D.3 Guidelines for the inclusion of radio enabled products or combined equipment in EMC
standards . 32
Annex E (informative) Guidelines on the preparation of Annexes ZZ for harmonized standards
Bibliography . 37

Foreword
This CENELEC Guide 34:2024 has been prepared by CENELEC Technical Committee CLC/TC 210,
Electromagnetic Compatibility (EMC).
This first edition of CENELEC Guide 34 was approved by the CENELEC Technical Board on
rd
2023-12-13. It supersedes CENELEC Guide 24:2009 (3 edition) ‘Electromagnetic Compatibility (EMC)
rd
Standardization for Product Committees concerned with apparatus’ and CENELEC Guide 25:2009 (3
edition) ‘Guide on the use of standards for the implementation of the EMC Directive to apparatus’.
The main changes in relation to CENELEC Guide 24 and Guide 25 include the following:
1) Change of the Title;
2) In the Introduction, addition of information that the text of this Guide is based on the merging of
Guide 24 and Guide 25, deletion of redundant information;
3) Re-structuring of the document by introduction of Clause 1 “Scope”, Clause 2 “References”, Clause
3 “Terms and definitions, Clause 4 “Types of EMC publications or standards, respectively”, etc.;
4) Update of information, e.g. concerning the European EMC Directive and further inclusion of the
Radio Equipment Directive;
5) Deletion of Clause 9;
6) Shift of definitions from Guide 24, Annex B and Guide 25, Annex B to new Clause 3 and addition of
further definitions;
7) Removal of Annex B stemming from Guide 24 and of Annex B stemming from Guide 25;
8) Removal of Annex C stemming from Guide 24 as it seems that there was no application of this
annex;
9) Addition of a new Annex D concerning radio enabled products / combined equipment;
10) Addition of a new Annex E containing guidance for the preparation of Annexes ZZ for harmonized
European Standards;
11) Editorial improvements.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia,
Cyprus, the Czech Republic, Denmark, Estonia, Finland France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Republic
of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the
United Kingdom.
Introduction
In Europe, Directive 2014/30/EU (EMC Directive (EMCD)) published 2014-03-29 is valid at the time of
publication of this CENELEC Guide. This Directive contains essential requirements for the EMC of
equipment, which it defines as apparatus and fixed installations.
NOTE 1 The essential requirements are set out in Annex I, 1(a) (emission) and 1(b) (immunity) of Directive
2014/30/EU.
In Europe, Directive 2014/53/EU (Radio Equipment Directive (RED)) published 2014-05-22 is also valid
at the time of publication of this CENELEC Guide. This Directive contains essential requirements for
radio equipment including EMC requirements.
NOTE 2 The essential requirements in the field of EMC are set out in Article 3.1(b) of Directive 2014/53/EU.
NOTE 3 Further essential, non-EMC requirements for radio equipment are contained in Article 3.1(a) (safety),
Article 3.2 (efficient use of radio spectrum), Article 3.3 (miscellaneous) and Article 3.4 (Charging capabilities) of
Directive 2014/53/EU.
The essential requirements of these Directives related to electromagnetic compatibility (EMC) can be
divided into electromagnetic emission and immunity requirements.
EMC Directive 2014/30/EU, Article 13, states that equipment which is in conformity with harmonized
standards or parts thereof whose references have been published in the Official Journal of the European
Union (OJEU) shall be presumed to be in conformity with the essential requirements covered by these
standards or parts thereof. The presumption of conformity is limited to the scope of the harmonized
standard(s) applied and the relevant essential requirements covered by the harmonized standard(s).
These harmonized standards can be regarded as tools that can be used for the declaration of conformity
of a product with – here in the field of EMC – essential requirements of the EMC Directive or the Radio
Equipment Directive (depending on which Directive the product falls under).
The European Commission has commissioned CEN, CENELEC and ETSI to draft harmonized
standards for electromagnetic compatibility in support of the EMC Directive and its essential
requirements.
The European Commission has also commissioned CEN, CENELEC and ETSI with the task of
preparing the necessary harmonized standards for the implementation of the essential requirements of
the Radio Equipment Directive in the field of EMC.
This first edition of CENELEC Guide 34 updates the guidance information of CENELEC Guides 24 and
25 with particular focus on the application of Directives 2014/30/EU (EMCD) and 2014/53/EU (RED)
and merges the contents of both Guides.
It is recommended that this CENELEC Guide is read in conjunction with IEC Guide 107.
1 Scope
This CENELEC Guide establishes useful guidelines for the preparation and use of standards in the field
of electromagnetic compatibility (EMC) in general, and in particular for the implementation of the EMC
Directive and the Radio Equipment Directive (RED). This Guide is intended to be used by Technical
Committees.
The purpose of this guide is to give advice on:
– the preparation of dedicated Product and Product Family Standards;

– the application of EMC Standards.
Certification aspects are not covered by this Guide.
NOTE Certification is the action by a third party demonstrating that adequate confidence is provided that a duly
identified product, process or service is in conformity with a standard or with other normative documents.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60050-161, in
Directive 2014/30/EU and in EU Regulation 1025/2012 and the following apply. For facilitating the
application of this Guide, the following definitions are repeated:
3.1
electromagnetic compatibility
EMC
ability of an equipment or system to function satisfactorily in its electromagnetic environment without
introducing intolerable electromagnetic disturbances to anything in that environment
[SOURCE: IEC 60050-161:1990, 161-01-07]
3.2
EMC Directive
EMCD
Directive of the European Parliament and of the Council on the harmonization of the laws of the Member
States relating to electromagnetic compatibility
3.3
Radio Equipment Directive
RED
Directive of the European Parliament and of the Council on the harmonization of the laws of the Member
States relating to the making available on the market of radio equipment
3.4
standard (in the sense of EU Regulation 1025/2012)
technical specification, adopted by a recognized standardization body, for repeated or continuous
application, with which compliance is not compulsory, and which is one of the following:
(a) International standard means a standard adopted by an international standardization body;
(b) European standard means a standard adopted by a European standardization body;
(c) harmonized standard means a European standard adopted on the basis of a request made by the
Commission for the application of Union harmonization legislation;
(d) national standard means a standard adopted by a national standardization body
[SOURCE: EU Regulation 1025/2012, Article 2 (1)]
3.5
harmonized standard
European standard adopted on the basis of a request made by the Commission for the application of
Union harmonization legislation
[SOURCE: Regulation (EU) 1025/2012, Article 2 (1c)]
Note 1 to entry: See also 3.4.
3.6
Official Journal of the European Union
OJEU
Official Journal of the European Union
Note 1 to entry: Among other information of the European Union or the European Commission the references of
the harmonized European standards are published in Category L publications of the OJEU.
3.7
date of applicability (in the OJEU)
date published in the OJEU in conjunction with the reference of a harmonized standard when a
presumption of conformity with applicable (the) essential requirement(s) for products covered by the
harmonized standard starts or started
3.8
date of withdrawal (in the OJEU)
date when a presumption of conformity ends or ended as
published in the OJEU in conjunction with a reference to a harmonized standard to which the withdrawal
is deferred
Note 1 to entry: This definition should not be confused with the definition of the date of withdrawal according to
CEN/CENELEC Internal Regulations Part 2:2020-07, 2.2.1.
3.9
industrial, scientific and medical (ISM) applications (of radio frequency energy)
ISM applications (of radio frequency energy)
operation of equipment or appliances designed to generate and use locally radio frequency energy for
industrial, scientific, medical, domestic or similar purposes, excluding applications in the field of
telecommunications
Note 1 to entry: Typical applications are the production of physical, biological, or chemical effects such as heating,
ionization of gases, mechanical vibrations, hair removal, acceleration of charged particles. A non-exhaustive list of
examples is given in EN IEC 55011, Annex A.
[SOURCE: ITU Radio Regulations Volume 1: 2012 – Chapter I, Definition 1.15]
[SOURCE: EN IEC 55011, Definition 3.13]
3.10
ISM RF equipment and appliances
equipment or appliances designed to generate and/or use locally radio-frequency energy for industrial,
scientific, medical, domestic or similar purposes, excluding applications in the field of
telecommunications and information technology and other applications covered by other CISPR
publications
Note 1 to entry: The abbreviation “ISM RF” is used for such equipment or appliances only.
[SOURCE: EN IEC 55011, Definition 3.14]
4 Types of EMC publications
4.1 General
EMC standards are divided into the following categories:
a) Basic EMC standards;
b) Generic EMC standards;
c) Product family EMC standards;
d) Product EMC standards.
NOTE 1 The standards classifications given above are not in line with IEC Guide 108 which deals with horizontal
standards and defines the terms Generic and Basic Standards, however they are in line with the existing IEC Guide
107 which applies to EMC standards. The standards classifications will be re-considered if a modification of the
relevant definitions in IEC Guide 107 is made.
A short description of the principal content of these categories of EMC standards is given below. Detailed
information can be found in IEC Guide 107.
NOTE 2 There are also other types of publications dealing with EMC issues, such as Technical Specifications
(TS), Technical Reports (TR), Publicly Available Specifications (PAS).
Table 1 gives an overview of the categories of standards, their principal content and aims.
Table 1 — Structure, content and purpose of EMC standards
Type Content Purpose
a
Basic - Measurement and test methods - To be referenced in other documents, e.g.
Generic, Product family and Product EMC
- Instrumentation
Standards
- Test set-up
- Not sufficient for conformance testing on its
- Recommended ranges of test levels
own
(immunity)
- No limits
- No specific performance criteria
- Precise and essential requirements
Generic - Co-ordination for the requirements given in
(limits, test levels) for all products Product (Family) EMC Standards
intended for use in the relevant
- Conformance testing of products for which no
environment, e.g. residential,
dedicated Product family or Product EMC
commercial, light industry, industry
Standard exists
- Referring to Basic EMC Standards for (if published in the OJEU)
measurement/test methods (no
repetition of content, however
additional information may be given if
necessary)
- General performance criteria for the
immunity testing of products
- General operating conditions
Product - EMC requirements for a family of - Conformance testing of products
family products
- Offered for publication in the OJEU
- Performance criteria for immunity
- Precedence over Generic EMC Standards but
testing more detailed
to be co-ordinated with them
- Specific test set-up, etc.
- Referring to Basic EMC Standards for
measurements/tests (no repetition of
content, however additional information
may be given if necessary)
- Specific product (family) operating
conditions
Product – Same as for Product family EMC - Same as for Product family EMC standards but
standards but more specific more specific
- Offered for publication in the OJEU
- Product standards covering electromagnetic
emission requirements are seldom justified.

See also 4.4.2.
In other types of publications reference should also be made to Basic EMC standards for tests and
measurements.
4.2 Basic EMC standards
4.2.1 Basic EMC standards for measurement and/or test purposes
Basic EMC standards give the fundamental principles, concepts, terminology, technical characteristics
and/or test procedures for the achievement of EMC. They should be used as reference documents by
technical/product committees. In the context of this guide, Basic EMC standards have the same status
as horizontal publications.
Basic EMC standards for immunity may include ranges of test levels for the specific electromagnetic
phenomenon with respect to the characteristics of measuring equipment or measuring methods.
However, Basic EMC standards shall not include prescribed limits and shall not contain detailed
performance criteria.
Basic EMC standards are not intended for citation in the Official Journal of the European Union (OJEU).
4.2.2 Other types of basic EMC documents
Other types of Basic EMC publications, e.g. technical specifications, technical reports, etc., relating to
other aspects may be identified as “basic”, if they describe fundamental elements of EMC. For example,
they may concern:
– Description and classification of the electromagnetic environment; they can include ranges of
environmental and/or compatibility levels, thus constituting an important basis for establishing
emission limits and immunity test levels, e.g. EN IEC 61000-2-2, EN 61000-2-4,
IEC TR 61000-2-5;
– Guidelines on mitigation measures, e.g. IEC TR 61000-5 series.
4.3 Generic EMC standards
Generic EMC standards are designed to apply, for a defined electromagnetic environment, to products
for which no dedicated Product family or Product EMC standards exist. They specify a set of essential
requirements (e.g. limits, test levels in combination with appropriate test procedures). The Generic
Immunity Standards also specify generalized performance criteria applicable to products operating in
the relevant electromagnetic environment.
Generic EMC standards should not include detailed test and measurement methods or test
instrumentation but refer to Basic EMC standards for that purpose. Generic EMC standards may contain,
when necessary, additional information (e.g. choice of one method where several methods are included
in a Basic EMC standard). See also 6.2.
Generic immunity standards specify a limited number of essential EMC tests, with the objective of
achieving a technical/economic optimum, thus avoiding excessive test requirements that lead to
overtesting.
These limited test requirements do not preclude that equipment shall be designed so that it operates
normally in its intended EMC environment when exposed to the disturbing phenomena specified within
this environment.
Generic immunity standards also include those performance criteria of general application which are
associated with specific test levels.
Generic EMC standards should be used when no corresponding Product family or Product EMC
standard(s) exist. For example, the following sentence is included in the scope of relevant Generic EMC
standards:
“This generic EMC emission standard is to be used where no applicable product or product family EMC
emission standard is available.” (IEC 61000-6-4:2018, Clause 1)
or
“This generic EMC immunity standard is applicable if no relevant dedicated product or product family
EMC immunity standard exists.” (IEC 61000-6-1:2016, Clause 1 and IEC 61000-6-2:2016, Clause 1).
In addition, Generic EMC standards play an essential role in the co-ordination of Product family and
Product EMC standards. If product committees prepare Product EMC standards, they shall consult the
essential requirements, etc. given in the Generic EMC standards.
For requirements and information that should be avoided in harmonized standards, see
6.3.
4.4 Product specific EMC standards
4.4.1 Product family EMC standards
The scopes of such standards shall indicate the particular product family concerned. A product family,
from an EMC point of view, is a group of similar products for which the same standard(s) can be applied.
NOTE 1 A product family covers products with differing functions, but having some common general
characteristics (e.g. connection to the public low voltage network). The borderline with dedicated products can
sometimes be imprecise as families can be very broad or narrow.
NOTE 2 In addition it is probably necessary to indicate how to apply the standard to the product family or product
(specific test set-up and procedure if needed).
Product family EMC standards can, for example, be prepared for the following reasons:
a) more detailed description, specific functional requirements, specific operating conditions, etc.;
b) to address specific environments;
c) to address phenomena not considered in the Generic standards.
Product family standards define specific EMC requirements (immunity and/or emission) and precise
tests for the products within their scopes.
Product family EMC standards should preferably be structured in the same way as Generic EMC
standards.
In particular, the following items shall be considered:
a) Definition of the type of product(s) covered by the Product family EMC standard.
NOTE 3 It is important that the product family (families) covered by the scope are very clearly defined.
b) Normative reference to Basic EMC standards: they should not include detailed descriptions of the
measurement or test methods and the measurement or test instrumentation. In exceptional and
justified cases, specific test methods or deviations from the test methods specified in the Basic
EMC standards may be necessary. Test methods should be described in detail only for those
phenomena not covered by Basic EMC standards. See also 6.2.4.
c) In the field of immunity, inclusion of more specific and detailed performance criteria than given in
the Generic EMC standards. Product committees shall define product specific criteria for immunity
tests using the generalized performance criteria (defined in the relevant Generic EMC standard) as
a basis.
d) Inclusion of all additional information necessary for the reproducible testing of the products within
the scope of the Product family EMC standard, the definition and description of the operating
conditions for the product, the applicable electromagnetic environment and the particular
phenomena to be considered.
e) Coordination of the tests and limits included with those given in the relevant Generic EMC standards.
If a deviation from the relevant Generic standard(s) is needed, it shall be fully justified and the
rationale shall be given in the Product family EMC standard, e.g. in an informative annex of the
standard. Deviations may concern the phenomena considered, additional tests or other test levels.
The justification shall explain how the level of protection is achieved and thus the essential
requirements are fulfilled despite the deviation from the requirements of the generic standard.
CENELEC/TC 210 in its overall EMC co-ordination role should be given the opportunity to comment on
the proposed justification prior to the finalization of the Product family EMC standard. See also 6.4.
For requirements and information that should be avoided in harmonized standards, see
6.3.
Product family EMC standards take precedence over Generic EMC standards, either partially or totally
according to the EMC domains covered.
4.4.2 Dedicated Product EMC standards
Product EMC standards relate to a specific type of product for which specific conditions shall be
considered. The same criteria as defined for Product family EMC standards apply to Product EMC
standards.
EMC requirements, instead of constituting separate standards, are frequently included within general-
purpose standards dedicated to specific (dedicated) products within their scopes. EMC clauses within
these general-purpose standards shall be separated and clearly identified. However, it is preferred to
prepare separate EMC standards.
In particular, in relation to emission requirements, if a particular product is covered by a Product family
standard, the preparation of a dedicated Product standard is rarely justified. Deviations from the
specified emission limits is allowed only in exceptional cases and shall be justified, e.g. if a particular
environment allows an increase of an emission limit. Product EMC standards are therefore in some
cases justifiably different from Product family and Generic standards; however, they should be
coordinated with them.
CENELEC/TC 210 in its overall EMC co-ordination role should be given the opportunity to comment on
the proposed justification prior to the finalization of the Product EMC standard. See also 6.4.
Product specific functional characteristics should be taken into account when determining the product's
immunity requirements. Dedicated Product EMC standards or clauses should give precise performance
criteria.
For requirements and information that should be avoided in harmonized standards, see 6.3.
5 Electromagnetic phenomena considered in EMC standards.
5.1 Phenomena relevant for electromagnetic emission
It has been found sufficient for ensuring EMC that the following phenomena or effects are considered
when formulating emission requirements (limits) in Generic, Product family and Product EMC standards:
– harmonic and interharmonic currents;
– voltage fluctuations/flicker;
– low frequency electric fields (0 Hz to 9 kHz, e.g. 16,7 Hz, 50 Hz);
– low frequency magnetic fields (0 Hz to 9 kHz, e.g. 16,7 Hz, 50 Hz);
– conducted disturbances (> 9 kHz) for the protection of radio reception and/or other EMC purposes;
– radiated disturbances (> 9 kHz) for the protection of radio reception and/or other EMC purposes.
NOTE 1 Radio-interference emission limits may provide an indirect limitation of transients.
NOTE 2 The consideration of the phenomena may lead to no requirement for testing if the drafting committee
concludes that risk of EM incompatibilities of the EUT is negligible considering the representative coupling path and
potential victims in the EUT’s environment.
In the future, additional or other phenomena may be considered for emission requirements.
5.2 Phenomena relevant for electromagnetic immunity
5.2.1 General
It has been found to be sufficient for ensuring EMC that the phenomena or effects described in 5.2.2 to
5.2.6 are considered when defining immunity requirements (limits) in Generic, Product family and
Product EMC Standards.
Detailed information concerning the electromagnetic phenomena mentioned above can be found in
IEC TR 61000-2-5.
In the future, additional or other phenomena may be considered for immunity requirements.
NOTE The consideration of the phenomena may lead to no requirement for testing if the drafting committee
concludes that risk of electromagnetic incompatibilities of the EUT is negligible considering the representative
coupling path and potential sources in the EUT’s environment.
5.2.2 Conducted low frequency phenomena
– Slow variations of the supply voltage;
– harmonics, interharmonics;
– signalling on the mains supply;
– conducted common mode disturbances between 0 Hz and 150 kHz on the mains supply;
– conducted differential mode disturbances between 2 kHz and 150 kHz on the mains supply;
– voltage fluctuations;
– voltage dips and interruptions;
– voltage unbalance;
– power frequency variations;
– induced low frequency voltages;
– DC current or voltage in AC networks.
5.2.3 Radiated low frequency field phenomena (below 9 kHz)
– Electric fields;
– magnetic fields:
o continuous;
o transient.
NOTE Electric and magnetic fields can be continuous or transient, far field or near field.
5.2.4 Conducted high frequency phenomena
– Induced voltages or currents:
o continuous waves;
o modulated waves;
– unidirectional transients:
o e.g. electrical fast transients/burst;
o e.g. surges;
– oscillatory transients.
NOTE Unidirectional and oscillatory transients can be single or repetitive.
5.2.5 Radiated high frequency field phenomena (above and including 9 kHz)
– Magnetic fields;
– electric fields;
– electromagnetic fields:
– continuous waves;
– modulated waves;
– transients.
NOTE Transients can be single or repetitive.
5.2.6 Other phenomena
– Electrostatic discharge (ESD).
6 Particular aspects for the drafting of Harmonized EMC standards
6.1 General
Harmonized EMC standards are drafted under a standardization request (mandate) of the European
Commission. Such standards are intended to be cited in the Official Journal of the European Union.
When a harmonized standard is cited in the official journal of the European Union, the compliance of a
product with such a standard leads to the presumption of conformity with the essential requirement(s)
of the Directive that is (are) covered by the standard.
This legally binding presumption of conformity implies some obligations and restrictions in the drafting
of the harmonized standard in addition to the usual CEN/CENELEC Internal Regulation Part 3 and other
guides to ensure a sufficient level of legal certainty.
Therefore, the acceptance for citation of a standard is now subject to assessment and approval by the
HAS (EMCD and/or RED) consultant and the European Commission services. The European
Commission may decide to accept a standard for citation, accept it for citation with restrictions
mentioned in the Official Journal, or simply reject it for citation.
Sub-clauses 6.2 and 6.3 provide additional requirements that technical committees need to apply when
drafting a Harmonized EMC standard.
6.2 Obligations for Harmonized EMC standards
6.2.1 Pre-requisite
The standard shall be based on a standardization request of the European Commission (EC) and the
relevant standardization request (mandate) shall be mentioned in the data sheet of the standardization
project.
The standard shall be prepared according to the rules of the relevant standardization organization for
the preparation of standards and adopted by the National Committees. See CEN/CENELEC Internal
Regulations Part 3.
Furthermore, the following document provides guidance to Technical Bodies and Working Groups on
horizontal aspects to be considered when preparing EN IEC harmonized standards:
Drafting EN IEC standards for citation in the OJEU (cenelec.eu)
6.2.2 European foreword
A European foreword shall be present in a harmonized standard.
When the standard is a revision of a previous edition, the European foreword shall summarize the main
changes in the new edition of the standard.
The standardization request (mandate) shall be referred to in Annex ZZ and shall not be mentioned in
the European foreword.
6.2.3 Scope
The scope shall allow the user of the standard to identify the products or product families that fall into
the scope of the standard, i.e. the scope shall be concise and clear.
NOTE At the time of the publication of this guide, the scopes of the Generic standards are considered too vague
for future citation in the Official Journal.
The scope shall be consistent with the content of the standard.
6.2.4 Normative references
The different types of EMC publications (see Clause 4) presuppose a hierarchy of standards and an
extensive use of references to other EMC standards. For example, Generic EMC standards and Product
(family) standards shall refer to Basic EMC standards without reproducing the details, but can contain
additional requirements and/or information, if necessary. It is therefore required to define clearly the
principles to which such references underly.
References to other documents shall be done according to the relevant CENELEC rules
(CEN/CENELEC Internal Regulations Part 3 and CENELEC Guide 10). For documents that are intended
for citation in the OJEU, the relevant rules for harmonized standards shall also be observed.
In principle, it is acceptable to refer in a document (e.g. standard) to other documents in the following
two ways:
a) References should be done only to approved (and published) documents, e.g. published by ISO,
IEC, CEN, CENELEC, ETSI, ITU-R, ITU-T. For references to Basic EMC standards, dated
references shall be used. Where the document contains an Annex ZA (in the case where CENELEC
documents, e.g. standards, are based on international documents) it is the prevailing procedure
regarding the use of references. The specific edition of the referenced EN is the reference to be
followed.
References shall be normative and dated. Informative and undated references in harmonized
standards are only allowed for referenced documents that are not linked to an essential requirement
of a European Directive.
The references should be up to date as far as possible.
b) A normative or informative reference to a draft or final draft (e.g. IEC CDV or FDIS, CENELEC
prEN or FprEN) is described as risky in CEN CENELEC Internal Regulations Part 3, sub-clause
10.5 and therefore strongly discouraged. However, if there is a necessity to make such a reference
(e.g. a reference in a draft of a standard which is part of a series to the draft of another standard of
the same series) this should be based on a careful decision.
NOTE It should be noted that according to the HAS Consultant Assessment System (which started in
October 2022) the assessment result can be a conditional compliance in the case of a document that is part
of a series of standards and contains a reference to a draft of another standard of the same series.
Any cross reference to a normative reference in the core text of the standard shall be done to specific
clauses or subclauses ('generic' references should be avoided), however, in exceptional cases it can be
that the entire text of the normative reference shall be applied in full.
The clauses and/or sub-clauses of the normative references cited in the Harmonized EMC standard are
also part of the assessment of the HAS consultant and the European Commission services. The same
additional requirements as for the harmonized standard itself apply to such parts of a normative
reference. If any content of the normative reference is not in line with these additional requirements, a
text (e.g. a note) should be added in the harmonized standard to correct or clarify the problematic content
of the normative reference.
The following statement from the Vademecum on European Standardisation, Part 3, Paragraph 2.8.3
(Guidance for selecting normative references in harmonised standards) shall also be taken into account:
“Legal acts can never be used as a normative reference” completed by the following footnote 13:
“Only informative references to legal acts are possible, e.g. in an informative annex (see Section 2.8.4).”
Additional information is given in Annex B.
Reference is also made to the CEN/CENELEC guidance on normative references in harmonized
standards available at the following link:
https://boss.cenelec.eu/media/BOSS%20CENELEC/ref/guidance_normative_references_hens.pdf
6.2.5 Definitions
In addition to the rules given in the CEN/CENELEC Internal Regulations, definitions shall also be
consistent with the definitions given in the relevant EU legislation. For any definitions that are not
consistent with the latter, the European foreword and Annex ZZ shall indicate the differences to the
relevant EU legislation.
6.2.6 Technical requirements
In case of a standard covering more than just EMC aspects (wider scope than purely EMC), the
normative elements in response to the standardization request shall be properly separated from other
normative elements.
The Harmonized EMC standard shall provide an added value to the normative reference (e.g. Basic
EMC standard). The added value is ensured if at least one of these elements is provided:
– product specific EUT operating mode during the test;
– product specific EUT performance criteria and/or performance level;
– product specific limits;
– product specific test method.
EXAMPLE An EN containing only a statement such as “EN 55032 and EN 55035 apply” as the EMC
requirement cannot be considered as a Harmonized EMC standard.
In principle, the Harmonized EMC standard shall cover all relevant essential requirements that are part
of the standardization request. However, if the scope of the standard is limited to only a part of these
essential requirements then only these essential requirements are covered.
The technical requirements shall be as clear and precise as possible, meaning that the application of
the requirement should not be subject to any kind of interpretation by the user of the standard.
The requirements of the Harmonized EMC standard shall specify appropriate and verifiable measures
for mitigation of EMC risk (as far as possible performance based). As a basic principle, these
requirements shall be based on an assessment considering a level of protection that corresponds to the
state of the art as given in the latest edition(s) of the relevant Generic EMC standard(s) and more
comprehensive standards (e.g. which deal with all types of ports except exotic variants). Refer also to
Clause 5 describing the electromagnetic phenomena to be considered in the assessment.
Therefore, emission requirements (if relevant) shall be equivalent to or more appropriate than those in
the standards already acknowledged as describing the state of the a
...