SIST EN 301 489-55 V1.1.1:2026

HARMONISED EUROPEAN STANDARD
ElectroMagnetic Compatibility (EMC)
standard for radio equipment and services;
Part 55: Specific conditions for ground based equipment
for air navigation operating
in the frequency range 960 MHz to 1 215 MHz;
Harmonised Standard for ElectroMagnetic Compatibility

2 ETSI EN 301 489-55 V1.1.1 (2025-10)

Reference
DEN/ERM-EMC-408
Keywords
aeronautical, EMC, harmonised standard,
navigation
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: +33 4 92 94 42 00  Fax: +33 4 93 65 47 16

Siret N° 348 623 562 00017 - APE 7112B
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° w061004871

Important notice
The present document can be downloaded from the
ETSI Search & Browse Standards application.
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI
deliverable is the one made publicly available in PDF format on ETSI deliver repository.
Users should be aware that the present document may be revised or have its status changed,
this information is available in the Milestones listing.
If you find errors in the present document, please send your comments to
the relevant service listed under Committee Support Staff.
If you find a security vulnerability in the present document, please report it through our
Coordinated Vulnerability Disclosure (CVD) program.
Notice of disclaimer & limitation of liability
The information provided in the present deliverable is directed solely to professionals who have the appropriate degree of
experience to understand and interpret its content in accordance with generally accepted engineering or
other professional standard and applicable regulations.
No recommendation as to products and services or vendors is made or should be implied.
In no event shall ETSI be held liable for loss of profits or any other incidental or consequential damages.

Any software contained in this deliverable is provided "AS IS" with no warranties, express or implied, including but not
limited to, the warranties of merchantability, fitness for a particular purpose and non-infringement of intellectual property
rights and ETSI shall not be held liable in any event for any damages whatsoever (including, without limitation, damages
for loss of profits, business interruption, loss of information, or any other pecuniary loss) arising out of or related to the use
of or inability to use the software.
Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and
microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.

© ETSI 2025.
All rights reserved.
ETSI
3 ETSI EN 301 489-55 V1.1.1 (2025-10)
Contents
Intellectual Property Rights . 4
Foreword . 4
Modal verbs terminology . 5
1 Scope . 6
2 References . 6
2.1 Normative references . 6
2.2 Informative references . 7
3 Definition of terms, symbols and abbreviations . 7
3.1 Terms . 7
3.2 Symbols . 8
3.3 Abbreviations . 8
4 Test conditions . 8
4.1 General requirements . 8
4.2 Arrangements for test signals . 8
4.2.1 General . 8
4.2.2 Arrangements for test signals at the input of transmitters . 9
4.2.3 Arrangements for test signals at the output of transmitters . 9
4.2.4 Arrangements for test signals at the input of receivers . 9
4.2.5 Arrangements for test signals at the output of receivers . 9
4.3 RF exclusion band for radio equipment . 9
4.3.1 General requirements . 9
4.3.2 Exclusion band for transmitters or the transmitter part of transceivers. 9
4.3.3 Exclusion band for receivers or the receiver part of the transceivers . 10
5 Ancillary equipment . 10
6 Performance criteria . 10
6.1 General requirements . 10
7 Applicability tables. 11
7.1 EMC Emission . 11
7.1.1 General requirements . 11
7.1.2 Special Conditions . 12
7.2 Immunity . 12
7.2.1 General requirements . 12
7.2.2 Special Conditions . 13
8 EUT test configuration . 13
8.1 Test configuration for emissions . 13
8.2 Test configuration for immunity . 14
Annex A (informative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 15
Annex B (informative): Bibliography . 17
History . 18

ETSI
4 ETSI EN 301 489-55 V1.1.1 (2025-10)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The declarations
pertaining to these essential IPRs, if any, are publicly available for ETSI members and non-members, and can be
found in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to
ETSI in respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the
ETSI IPR online database.
Pursuant to the ETSI Directives including the ETSI IPR Policy, no investigation regarding the essentiality of IPRs,
including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not
referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become,
essential to the present document.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its
Members. 3GPP™, LTE™ and 5G™ logo are trademarks of ETSI registered for the benefit of its Members and of the
3GPP Organizational Partners. oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and of ®
the oneM2M Partners. GSM and the GSM logo are trademarks registered and owned by the GSM Association.
Foreword
This Harmonised European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic
compatibility and Radio spectrum Matters (ERM).
The present document has been prepared under the Commission's standardisation request C(2015) 5376 final [i.2] to
provide one voluntary means of conforming to the essential requirements of Directive 2014/53/EU on the harmonisation
of the laws of the Member States relating to the making available on the market of radio equipment and repealing
Directive 1999/5/EC [i.1].
Once the present document is cited in the Official Journal of the European Union under that Directive, compliance with
the normative clauses of the present document given in Table A.1 confers, within the limits of the scope of the present
document, a presumption of conformity with the corresponding essential requirements of that Directive and associated
EFTA regulations.
The present document is part 55 of a multi-part deliverable covering ElectroMagnetic Compatibility (EMC) standard for
radio equipment and services. Full details of the entire series can be found in part 1 [1].

National transposition dates
Date of adoption of this EN: 22 October 2025
Date of latest announcement of this EN (doa): 31 January 2026
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 31 July 2026
Date of withdrawal of any conflicting National Standard (dow): 31 July 2027

ETSI
5 ETSI EN 301 489-55 V1.1.1 (2025-10)
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.

ETSI
6 ETSI EN 301 489-55 V1.1.1 (2025-10)
1 Scope
The present document specifies technical characteristics and methods of measurement in respect of ElectroMagnetic
Compatibility (EMC) for the following equipment:
• Secondary Surveillance Radar (SSR) interrogator;
• SSR Far Field Monitor (FFM);
• Multilateration (MLAT);
• Wide Area Multilateration (WAM);
• Distance Measurement Equipment (DME) land station transponder;
• Extended Squitter (ES) / Non Transponder (NT).
operating in the frequency range 960 MHz to 1 215 MHz.
The above mentioned radio equipment can be intended for use at a fixed location or mobile use.
The standard covers equipment consisting of one or more enclosures that contain at least one of the following
functionalities: transmitter, receiver, signal processing. Other parts which are not part of the navigation functionality
e.g. local UPS, air conditioning equipment, dehumidifying equipment, communication network equipment, etc., are not
in the scope of the present document, unless these parts are implemented inside the system enclosure(s).
NOTE 1: The relationship between the present document and essential requirements of article 3.1(b) of
Directive 2014/53/EU [i.1] is given in annex A.
Technical specifications related to conducted emission EMC requirements below 9 kHz on the AC mains port of radio
equipment are not included in the present document.
NOTE 2: Such technical specifications are normally found in the relevant product family standards for AC mains
powered equipment (e.g. EN 61000-3-2 [i.3] and EN 61000-3-3 [i.4]).
2 References
2.1 Normative references
References are either specific (identified by date of publication and/or edition number or version number) or non-
specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found in the
ETSI docbox.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long-term validity.
The following referenced documents are necessary for the application of the present document.
[1] ETSI EN 301 489-1 (V2.2.3) (11-2019): "ElectroMagnetic Compatibility (EMC) standard for
radio equipment and services; Part 1: Common technical requirements; Harmonised Standard for
ElectroMagnetic Compatibility".
[2] EN 61000-6-4:2019: "Electromagnetic compatibility (EMC) - Part 6-4: Generic standards -
Emission standard for industrial environments", produced by CENELEC.
[3] EN 55032:2015: "Electromagnetic compatibility of multimedia equipment - Emission
requirements", produced by CENELEC.
ETSI
7 ETSI EN 301 489-55 V1.1.1 (2025-10)
[4] EN 61000-4-2:2025: "Electromagnetic compatibility (EMC) - Part 4-2: Testing and measurement
techniques - Electrostatic discharge immunity test", produced by CENELEC.
2.2 Informative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long-term validity.
The following referenced documents may be useful in implementing an ETSI deliverable or add to the reader's
understanding, but are not required for conformance to the present document.
[i.1] Directive 2014/53/EU of the European Parliament and of the Council of 16 April 2014 on the
harmonisation of the laws of the Member States relating to the making available on the market of
radio equipment and repealing Directive 1999/5/EC.
[i.2] Commission Implementing Decision C(2015) 5376 final of 4.8.2015 on a standardisation request
to the European Committee for Electrotechnical Standardisation and to the European
Telecommunications Standards Institute as regards radio equipment in support of Directive
2014/53/EU of the European Parliament and of the Council.
[i.3] EN 61000-3-2 (2018) + A1 (2020) + A2 (2024): "Electromagnetic compatibility (EMC) - Part 3-2:
Limits - Limits for harmonic current emissions (equipment input current ≤ 16 A per phase)",
produced by CENELEC.
[i.4] EN 61000-3-3 (2013) + A1 (2017) + A2 (2021): "Electromagnetic compatibility (EMC) - Part 3-3:
Limits - Limitation of voltage changes, voltage fluctuations and flicker in public low-voltage
supply systems, for equipment with rated current ≤ 16 A per phase and not subject to conditional
connection", produced by CENELEC.
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document the following terms apply:
ancillary equipment: electrical or electronic equipment, that is intended to be used with a receiver or transmitter
NOTE 1: It is considered as an ancillary equipment if:
 the equipment is intended for use with a receiver or transmitter to provide additional operational
and/or control features to the radio equipment (e.g. to extend control to another position or
location);
 the ancillary equipment cannot be used without being connected to radio equipment to provide user
functions independently of a receiver or transmitter; and
 the receiver or transmitter, to which it is connected, is capable of providing some intended
operation such as transmitting and/or receiving without the ancillary equipment (i.e. it is not a
sub-unit of the main equipment essential to the main equipment basic functions).
NOTE 2: An example of ancillary equipment would be a docking station for radio equipment whose interface is
dedicated to a particular product or range of products.
critical stored data: data that is essential for an EUT to perform a primary function in accordance with that EUT's
specification
NOTE: This can include data previously stored by the user.
ETSI
8 ETSI EN 301 489-55 V1.1.1 (2025-10)
enclosure port: phy
...

SLOVENSKI STANDARD
01-februar-2026
Standard elektromagnetne združljivosti (EMC) za radijsko opremo in storitve - 55.
del: Posebni pogoji za talno opremo za zračno navigacijo, ki deluje v frekvenčnem
območju od 960 MHz do 1215 MHz - Harmonizirani standard za elektromagnetno
združljivost
ElectroMagnetic Compatibility (EMC) standard for radio equipment and services - Part
55: Specific conditions for ground based equipment for air navigation operating in the
frequency range 960 MHz to 1 215 MHz - Harmonised Standard for ElectroMagnetic
Compatibility
Ta slovenski standard je istoveten z: ETSI EN 301 489-55 V1.1.1 (2025-10)
ICS:
33.060.01 Radijske komunikacije na Radiocommunications in
splošno general
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.

HARMONISED EUROPEAN STANDARD
ElectroMagnetic Compatibility (EMC)
standard for radio equipment and services;
Part 55: Specific conditions for ground based equipment
for air navigation operating
in the frequency range 960 MHz to 1 215 MHz;
Harmonised Standard for ElectroMagnetic Compatibility

2 ETSI EN 301 489-55 V1.1.1 (2025-10)

Reference
DEN/ERM-EMC-408
Keywords
aeronautical, EMC, harmonised standard,
navigation
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: +33 4 92 94 42 00  Fax: +33 4 93 65 47 16

Siret N° 348 623 562 00017 - APE 7112B
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° w061004871

Important notice
The present document can be downloaded from the
ETSI Search & Browse Standards application.
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI
deliverable is the one made publicly available in PDF format on ETSI deliver repository.
Users should be aware that the present document may be revised or have its status changed,
this information is available in the Milestones listing.
If you find errors in the present document, please send your comments to
the relevant service listed under Committee Support Staff.
If you find a security vulnerability in the present document, please report it through our
Coordinated Vulnerability Disclosure (CVD) program.
Notice of disclaimer & limitation of liability
The information provided in the present deliverable is directed solely to professionals who have the appropriate degree of
experience to understand and interpret its content in accordance with generally accepted engineering or
other professional standard and applicable regulations.
No recommendation as to products and services or vendors is made or should be implied.
In no event shall ETSI be held liable for loss of profits or any other incidental or consequential damages.

Any software contained in this deliverable is provided "AS IS" with no warranties, express or implied, including but not
limited to, the warranties of merchantability, fitness for a particular purpose and non-infringement of intellectual property
rights and ETSI shall not be held liable in any event for any damages whatsoever (including, without limitation, damages
for loss of profits, business interruption, loss of information, or any other pecuniary loss) arising out of or related to the use
of or inability to use the software.
Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and
microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.

© ETSI 2025.
All rights reserved.
ETSI
3 ETSI EN 301 489-55 V1.1.1 (2025-10)
Contents
Intellectual Property Rights . 4
Foreword . 4
Modal verbs terminology . 5
1 Scope . 6
2 References . 6
2.1 Normative references . 6
2.2 Informative references . 7
3 Definition of terms, symbols and abbreviations . 7
3.1 Terms . 7
3.2 Symbols . 8
3.3 Abbreviations . 8
4 Test conditions . 8
4.1 General requirements . 8
4.2 Arrangements for test signals . 8
4.2.1 General . 8
4.2.2 Arrangements for test signals at the input of transmitters . 9
4.2.3 Arrangements for test signals at the output of transmitters . 9
4.2.4 Arrangements for test signals at the input of receivers . 9
4.2.5 Arrangements for test signals at the output of receivers . 9
4.3 RF exclusion band for radio equipment . 9
4.3.1 General requirements . 9
4.3.2 Exclusion band for transmitters or the transmitter part of transceivers. 9
4.3.3 Exclusion band for receivers or the receiver part of the transceivers . 10
5 Ancillary equipment . 10
6 Performance criteria . 10
6.1 General requirements . 10
7 Applicability tables. 11
7.1 EMC Emission . 11
7.1.1 General requirements . 11
7.1.2 Special Conditions . 12
7.2 Immunity . 12
7.2.1 General requirements . 12
7.2.2 Special Conditions . 13
8 EUT test configuration . 13
8.1 Test configuration for emissions . 13
8.2 Test configuration for immunity . 14
Annex A (informative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 15
Annex B (informative): Bibliography . 17
History . 18

ETSI
4 ETSI EN 301 489-55 V1.1.1 (2025-10)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The declarations
pertaining to these essential IPRs, if any, are publicly available for ETSI members and non-members, and can be
found in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to
ETSI in respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the
ETSI IPR online database.
Pursuant to the ETSI Directives including the ETSI IPR Policy, no investigation regarding the essentiality of IPRs,
including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not
referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become,
essential to the present document.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its
Members. 3GPP™, LTE™ and 5G™ logo are trademarks of ETSI registered for the benefit of its Members and of the
3GPP Organizational Partners. oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and of ®
the oneM2M Partners. GSM and the GSM logo are trademarks registered and owned by the GSM Association.
Foreword
This Harmonised European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic
compatibility and Radio spectrum Matters (ERM).
The present document has been prepared under the Commission's standardisation request C(2015) 5376 final [i.2] to
provide one voluntary means of conforming to the essential requirements of Directive 2014/53/EU on the harmonisation
of the laws of the Member States relating to the making available on the market of radio equipment and repealing
Directive 1999/5/EC [i.1].
Once the present document is cited in the Official Journal of the European Union under that Directive, compliance with
the normative clauses of the present document given in Table A.1 confers, within the limits of the scope of the present
document, a presumption of conformity with the corresponding essential requirements of that Directive and associated
EFTA regulations.
The present document is part 55 of a multi-part deliverable covering ElectroMagnetic Compatibility (EMC) standard for
radio equipment and services. Full details of the entire series can be found in part 1 [1].

National transposition dates
Date of adoption of this EN: 22 October 2025
Date of latest announcement of this EN (doa): 31 January 2026
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 31 July 2026
Date of withdrawal of any conflicting National Standard (dow): 31 July 2027

ETSI
5 ETSI EN 301 489-55 V1.1.1 (2025-10)
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.

ETSI
6 ETSI EN 301 489-55 V1.1.1 (2025-10)
1 Scope
The present document specifies technical characteristics and methods of measurement in respect of ElectroMagnetic
Compatibility (EMC) for the following equipment:
• Secondary Surveillance Radar (SSR) interrogator;
• SSR Far Field Monitor (FFM);
• Multilateration (MLAT);
• Wide Area Multilateration (WAM);
• Distance Measurement Equipment (DME) land station transponder;
• Extended Squitter (ES) / Non Transponder (NT).
operating in the frequency range 960 MHz to 1 215 MHz.
The above mentioned radio equipment can be intended for use at a fixed location or mobile use.
The standard covers equipment consisting of one or more enclosures that contain at least one of the following
functionalities: transmitter, receiver, signal processing. Other parts which are not part of the navigation functionality
e.g. local UPS, air conditioning equipment, dehumidifying equipment, communication network equipment, etc., are not
in the scope of the present document, unless these parts are implemented inside the system enclosure(s).
NOTE 1: The relationship between the present document and essential requirements of article 3.1(b) of
Directive 2014/53/EU [i.1] is given in annex A.
Technical specifications related to conducted emission EMC requirements below 9 kHz on the AC mains port of radio
equipment are not included in the present document.
NOTE 2: Such technical specifications are normally found in the relevant product family standards for AC mains
powered equipment (e.g. EN 61000-3-2 [i.3] and EN 61000-3-3 [i.4]).
2 References
2.1 Normative references
References are either specific (identified by date of publication and/or edition number or version number) or non-
specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found in the
ETSI docbox.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long-term validity.
The following referenced documents are necessary for the application of the present document.
[1] ETSI EN 301 489-1 (V2.2.3) (11-2019): "ElectroMagnetic Compatibility (EMC) standard for
radio equipment and services; Part 1: Common technical requirements; Harmonised Standard for
ElectroMagnetic Compatibility".
[2] EN 61000-6-4:2019: "Electromagnetic compatibility (EMC) - Part 6-4: Generic standards -
Emission standard for industrial environments", produced by CENELEC.
[3] EN 55032:2015: "Electromagnetic compatibility of multimedia equipment - Emission
requirements", produced by CENELEC.
ETSI
7 ETSI EN 301 489-55 V1.1.1 (2025-10)
[4] EN 61000-4-2:2025: "Electromagnetic compatibility (EMC) - Part 4-2: Testing and measurement
techniques - Electrostatic discharge immunity test", produced by CENELEC.
2.2 Informative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long-term validity.
The following referenced documents may be useful in implementing an ETSI deliverable or add to the reader's
understanding, but are not required for conformance to the present document.
[i.1] Directive 2014/53/EU of the European Parliament and of the Council of 16 April 2014 on the
harmonisation of the laws of the Member States relating to the making available on the market of
radio equipment and repealing Directive 1999/5/EC.
[i.2] Commission Implementing Decision C(2015) 5376 final of 4.8.2015 on a standardisation request
to the European Committee for Electrotechnical Standardisation and to the European
Telecommunications Standards Institute as regards radio equipment in support of Directive
2014/53/EU of the European Parliament and of the Council.
[i.3] EN 61000-3-2 (2018) + A1 (2020) + A2 (2024): "Electromagnetic compatibility (EMC) - Part 3-2:
Limits - Limits for harmonic current emissions (equipment input current ≤ 16 A per phase)",
produced by CENELEC.
[i.4] EN 61000-3-3 (2013) + A1 (2017) + A2 (2021): "Electromagnetic compatibility (EMC) - Part 3-3:
Limits - Limitation of voltage changes, voltage fluctuations and flicker in public low-voltage
supply systems, for equipment with rated current ≤ 16 A per phase and not subject to conditional
connection", produced by CENELEC.
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document the following terms apply:
ancillary equipment: electrical or electronic equipment, that is intended to be used with a receiver or transmitter
NOTE 1: It is considered as an ancillary equipment if:
 the equipment is intended for use with a receiver or transmitter to provide additional operational
and/or control features to the radio equipment (e.g. to extend control to another position or
location);
 the ancillary equipment cannot be used without being connected to radio equipment to provide user
functions independently of a receiver or transmitter; and
 the receiver or transmitter, to which it is connected, is capable of providing some intended
operation such as transmitting and/or receiving without the ancillary equipment (i.e. it is not a
sub-unit of the main equipment essential to the main equipment b
...