EN IEC 55011:2025
(Main)Industrial, scientific and medical equipment - Radio-frequency disturbance characteristics - Limits and methods of measurement
Industrial, scientific and medical equipment - Radio-frequency disturbance characteristics - Limits and methods of measurement
2022-05-30: Fragments 1 to 7 circulated to parallel CDV separately, then merged into this PR before FDIS stage
2020-10-06: PR changed from A3 to new edition furhter to same change at IEC
Industrielle, wissenschaftliche und medizinische Geräte - Funkstörungen - Grenzwerte und Messverfahren
Appareils industriels, scientifiques et médicaux - Caractéristiques de perturbations radioélectriques - Limites et méthodes de mesure
Industrijska, znanstvena in medicinska oprema - Karakteristike radiofrekvenčnih motenj - Mejne vrednosti in merilne metode
Ta dokument se uporablja za industrijsko, znanstveno in medicinsko električno opremo, ki deluje v frekvenčnem območju od 0 Hz do 400 GHz, ter za gospodinjske in podobne naprave, zasnovane za proizvodnjo in/ali lokalno uporabo radiofrekvenčne energije. Ta dokument obravnava zahteve glede oddajanja motenj v povezavi z radiofrekvenčnimi (RF) motnjami v frekvenčnem območju od 9 kHz do 400 GHz. Za načine uporabe ISM RF s pomenom definicije iz Pravilnika o radiokomunikacijah Mednarodne telekomunikacijske zveze (2020) (glej definicijo 3.1.2018) ta dokument obravnava zahteve glede oddajanja motenj v povezavi z radiofrekvenčnimi motnjami v frekvenčnem območju od 9 kHz do 18 GHz. Na področje uporabe tega dokumenta spada tudi industrijska, znanstvena in medicinska (ISM) oprema, ki vključuje funkcije radijskega oddajanja/sprejemanja (gostiteljska oprema z radijsko funkcionalnostjo), glej dodatek F. Vendar zahteve glede oddajanja motenj iz tega dokumenta ne veljajo za namerne prenose iz radijskega oddajnika, kot ga opredeljuje ITU, vključno z njihovim neželenim oddajanjem motenj. OPOMBA 1: Ta izključitev velja samo za oddajanje motenj iz namenskega radijskega oddajnika. Ne velja pa za kombinirano oddajanje motenj, ki je na primer posledica intermodulacije med radijskimi in neradijskimi podsklopi industrijske, znanstvene in medicinske opreme. OPOMBA 2: Zahteve glede oddajanja motenj za indukcijske kuhalnike so podane v standardu CISPR 14-1 [1]1. Ta dokument zajema zahteve za opremo za razsvetljavo ISM RF in UV-iradiatorje, ki delujejo pri frekvencah znotraj frekvenčnih pasov ISM, določenih v Pravilniku o radiokomunikacijah Mednarodne telekomunikacijske zveze. Roboti, ki se uporabljajo za industrijske, znanstvene in medicinske namene, spadajo na področje uporabe tega dokumenta. PRIMER: Varilni roboti, roboti za barvanje, roboti za rokovanje s tovorom, roboti za obdelavo, roboti za sestavljanje, medicinski roboti ter izobraževalni in eksperimentalni roboti. Celovit seznam robotov, ki spadajo na področje uporabe tega dokumenta, je podan v standardih IEC EMC. OPOMBA 3: Leteči roboti, robotski gospodinjski pomočniki, robotske igrače in razvedrilni roboti spadajo na področje uporabe drugih standardov CISPR. Oprema, zajeta v drugih standardih CISPR o oddajanju motenj izdelkov in skupin izdelkov, ne spada na področje uporabe tega dokumenta.
General Information
Relations
Overview
EN IEC 55011:2025 (adoption of CISPR 11:2024) is the European edition of the international standard that specifies radio‑frequency disturbance characteristics - limits and methods of measurement for industrial, scientific and medical (ISM) equipment. This 2025 edition supersedes EN 55011:2016 and its amendments and aligns with CISPR 11:2024 (Edition 7.0). It defines measurement methods, limits and classification rules for conducted and radiated electromagnetic disturbances across the ISM product family and fixes harmonized deadlines for national implementation.
Key Topics
- Scope and classification
- Applies to ISM equipment and related heavy industrial apparatus.
- Equipment is sorted into Group 1 / Group 2 and into classes (including Class A), with provisions for in‑situ measurements and documentation requirements for users.
- Emission limits
- Defines limits for conducted and radiated emissions (no numerical limits are reproduced here; see the standard for values).
- Covers equipment measured on test sites and specific in‑situ limits for some classes.
- Frequency ranges & measurement bands
- Measurement guidance and procedures span from low frequencies up to 18 GHz, with dedicated sections for 9 kHz–1 GHz and 1 GHz–18 GHz measurements.
- Includes designation of ISM frequencies.
- Measurement methods & test sites
- Detailed requirements for test arrangements: OATS (Open Area Test Sites), SAC (Semi‑Anechoic Chambers), FAR (Full Anechoic Rooms) and validation of test sites.
- Instrumentation guidance referencing CISPR 16 parts (measuring apparatus, antennas, coupling devices) and use of accessories such as the Artificial Network (AN), voltage probes, antennas and artificial hand.
- Configuration, loading & special equipment
- Rules for EUT (equipment under test) configuration, cables, supply connections and load conditions for categories such as medical, industrial, microwave cooking, welding, robots and grid‑connected power converters.
- Recording, uncertainty and measurement reporting
- Procedures for recording conducted and radiated results, measurement uncertainty and site validation.
Applications
EN IEC 55011:2025 is used by:
- Manufacturers of ISM, laboratory and medical devices to design for EMC compliance.
- EMC test laboratories performing type‑approval and pre‑compliance testing.
- Compliance engineers preparing technical files for CE marking and market access.
- Regulators and certification bodies establishing conformity assessment and enforcement programs. Practical outcomes include predictable EMC performance, fewer field interference issues, streamlined certification and consistent test reporting.
Related Standards
Key referenced documents (normative and supporting) include:
- CISPR 16 series (measuring apparatus and methods)
- EN/IEC 61000‑4‑6 (immunity to conducted disturbances)
- EN IEC 60601‑2‑2 and other IEC product standards referenced in the bibliography For exact references and normative limits, consult the full EN IEC 55011:2025 text and the cited CISPR/IEC documents.
Frequently Asked Questions
EN IEC 55011:2025 is a standard published by CLC. Its full title is "Industrial, scientific and medical equipment - Radio-frequency disturbance characteristics - Limits and methods of measurement". This standard covers: 2022-05-30: Fragments 1 to 7 circulated to parallel CDV separately, then merged into this PR before FDIS stage 2020-10-06: PR changed from A3 to new edition furhter to same change at IEC
2022-05-30: Fragments 1 to 7 circulated to parallel CDV separately, then merged into this PR before FDIS stage 2020-10-06: PR changed from A3 to new edition furhter to same change at IEC
EN IEC 55011:2025 is classified under the following ICS (International Classification for Standards) categories: 33.100.10 - Emission. The ICS classification helps identify the subject area and facilitates finding related standards.
EN IEC 55011:2025 has the following relationships with other standards: It is inter standard links to EN 55011:2016, EN 55011:2016/A2:2021, EN 55011:2016/A11:2020, EN 55011:2016/A1:2017, EN 55011:2016/prAB. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN IEC 55011:2025 is associated with the following European legislation: EU Directives/Regulations: 2014/30/EU; Standardization Mandates: M/552. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
You can purchase EN IEC 55011:2025 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of CLC standards.
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2025
Nadomešča:
SIST EN 55011:2016
SIST EN 55011:2016/A1:2017
SIST EN 55011:2016/A11:2020
SIST EN 55011:2016/A2:2021
SIST EN 55011:2016/oprAB:2023
Industrijska, znanstvena in medicinska oprema - Karakteristike radiofrekvenčnih
motenj - Mejne vrednosti in merilne metode
Industrial, scientific and medical equipment - Radio-frequency disturbance
characteristics - Limits and methods of measurement
Industrielle, wissenschaftliche und medizinische Geräte - Funkstörungen - Grenzwerte
und Messverfahren
Appareils industriels, scientifiques et médicaux - Caractéristiques de perturbations
radioélectriques - Limites et méthodes de mesure
Ta slovenski standard je istoveten z: EN IEC 55011:2025
ICS:
33.100.10 Emisija Emission
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN IEC 55011
NORME EUROPÉENNE
EUROPÄISCHE NORM July 2025
ICS 33.100.10 Supersedes EN 55011:2016; EN 55011:2016/A1:2017;
EN 55011:2016/A11:2020; EN 55011:2016/A2:2021
English Version
Industrial, scientific and medical equipment - Radio-frequency
disturbance characteristics - Limits and methods of
measurement
(CISPR 11:2024)
Appareils industriels, scientifiques et médicaux - Industrielle, wissenschaftliche und medizinische Geräte -
Caractéristiques de perturbations radioélectriques - Limites Funkstörungen - Grenzwerte und Messverfahren
et méthodes de mesure (CISPR 11:2024)
(CISPR 11:2024)
This European Standard was approved by CENELEC on 2024-10-16. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
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.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 55011:2025 E
European foreword
The text of document CIS/B/831/FDIS, future edition 7 of CISPR 11, prepared by SC CISPR/B
"Interference relating to industrial, scientific and medical radio-frequency apparatus, to other (heavy)
industrial equipment, to overhead power lines, to high voltage equipment and to electric traction" of
IEC/TC CISPR "International special committee on radio interference" was submitted to the IEC-
CENELEC parallel vote and approved by CENELEC as EN IEC 55011:2025.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2026-07-31
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2028-07-31
document have to be withdrawn
This document supersedes EN 55011:2016 and all of its amendments and corrigenda (if any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard CISPR 11:2024 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standard indicated:
CISPR 14-1 NOTE Approved as EN IEC 55014-1
IEC 62920:2017 NOTE Approved as EN 62920:2017 (not modified) +A11:2020
IEC 62920:2017/A1:2021 NOTE Approved as EN 62920:2017/A1:2021 (not modified)
IEC 61000-6-3:2020 NOTE Approved as EN IEC 61000-6-3:2021 (not modified)
IEC 60364-1 NOTE Approved as HD 60364-1
IEC 60601-1-2:2014 NOTE Approved as EN 60601-1-2:2015 (not modified)
IEC 60601-1-2:2014/A1:2020 NOTE Approved as EN 60601-1-2:2015/A1:2021 (not modified)
IEC 61922:2002 NOTE Approved as EN 61922:2002 (not modified)
IEC 61308:2005 NOTE Approved as EN 61308:2006 (not modified)
IEC 60705:2010 NOTE Approved as EN 60705:2015 (not modified)
IEC 60974-10:2020 NOTE Approved as EN IEC 60974-10:2021 (not modified)
CISPR 12 NOTE Approved as EN 55012
CISPR 15:2018 NOTE Approved as EN IEC 55015:2019 (not modified) +A11:2020
IEC 60364-5-51:2005 NOTE Approved as HD 60364-5-51:2009 +A11:2013
IEC 61158-1:2023 NOTE Approved as EN IEC 61158-1:2023 (not modified)
IEC 61689:2022 NOTE Approved as EN IEC 61689:2022 (not modified)
IEC 62135-2:2020 NOTE Approved as EN IEC 62135-2:2021 (not modified)
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod),
the relevant EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available
here: www.cencenelec.eu.
Publication Year Title EN/HD Year
CISPR 16-1-1 2019 Specification for radio disturbance and EN IEC 55016-1-1 2019
immunity measuring apparatus and
methods - Part 1-1: Radio disturbance and
immunity measuring apparatus -
Measuring apparatus
CISPR 16-1-2 2014 Specification for radio disturbance and EN 55016-1-2 2014
immunity measuring apparatus and
methods - Part 1-2: Radio disturbance and
immunity measuring apparatus - Coupling
devices for conducted disturbance
measurements
+ A1 2017 + A1 2018
CISPR 16-1-4 2019 Specification for radio disturbance and EN IEC 55016-1-4 2019
immunity measuring apparatus and
methods - Part 1-4: Radio disturbance and
immunity measuring apparatus - Antennas
and test sites for radiated disturbance
measurements
+ A1 2020 + A1 2020
+ A2 2023 + A2 2023
CISPR 16-2-1 2014 Specification for radio disturbance and EN 55016-2-1 2014
immunity measuring apparatus and
methods - Part 2-1: Methods of
measurement of disturbances and
immunity - Conducted disturbance
measurements
+ A1 2017 + A1 2017
Publication Year Title EN/HD Year
CISPR 16-2-3 2016 Specification for radio disturbance and EN 55016-2-3 2017
immunity measuring apparatus and
methods - Part 2-3: Methods of
measurement of disturbances and
immunity - Radiated disturbance
measurements
+ A1 2019 + A1 2019
+ A2 2023 + A2 2023
CISPR 16-4-2 2011 Specification for radio disturbance and EN 55016-4-2 2011
immunity measuring apparatus and
methods - Part 4-2: Uncertainties, statistics
and limit modelling - Measurement
instrumentation uncertainty
+ A1 2014 + A1 2014
+ A2 2018 + A2 2018
CISPR 32 2015 Electromagnetic compatibility of multimedia EN 55032 2015
equipment - Emission requirements
+ A1 2019 + A1 2020
IEC 60050-161 1990 International Electrotechnical Vocabulary. - -
Chapter 161: Electromagnetic compatibility
IEC 60601-2-2 2017 Medical electrical equipment - Part 2-2: EN IEC 60601-2-2 2018
Particular requirements for the basic safety
and essential performance of high
frequency surgical equipment and high
frequency surgical accessories
IEC 61000-4-6 2023 Electromagnetic compatibility (EMC) - Part EN IEC 61000-4-6 2023
4-6: Testing and measurement techniques
- Immunity to conducted disturbances,
induced by radio-frequency fields
IEC 61307 2011 Industrial microwave heating installations - EN 61307 2011
Test methods for the determination of
power output
ITU Radio 2020 Radio Regulations - -
Regulations
CISPR 11 ®
Edition 7.0 2024-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE
COMITÉ INTERNATIONAL SPÉCIAL DES PERTURBATIONS RADIOÉLECTRIQUES
PRODUCT FAMILY EMC STANDARD
NORME DE FAMILLE DE PRODUITS EN CEM
Industrial, scientific and medical equipment – Radio-frequency disturbance
characteristics – Limits and methods of measurement
Appareils industriels, scientifiques et médicaux – Caractéristiques de
perturbations radioélectriques – Limites et méthodes de mesure
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.100.10 ISBN 978-2-8322-8166-6
– 2 – CISPR 11:2024 © IEC 2024
CONTENTS
FOREWORD . 7
INTRODUCTION . 10
1 Scope . 11
2 Normative references . 11
3 Terms, definitions and abbreviated terms . 13
3.1 Terms and definitions . 13
3.2 Abbreviated terms . 18
4 Frequencies designated for ISM use . 19
5 Classification of equipment . 20
5.1 Separation into groups . 20
5.2 Division into classes . 20
5.3 Documentation for the user . 20
6 Limits of electromagnetic disturbances . 21
6.1 General . 21
6.2 Group 1 equipment measured on a test site . 21
6.2.1 Limits for conducted disturbances . 21
6.2.2 Limits of electromagnetic radiation disturbance. 26
6.3 Group 2 equipment measured on a test site . 29
6.3.1 Limits for conducted disturbances . 29
6.3.2 Limits of electromagnetic radiation disturbance. 30
6.4 Group 1 and group 2 class A equipment measured in situ . 36
6.4.1 Limits for conducted disturbances . 36
6.4.2 Limits of electromagnetic radiation disturbance. 36
7 Measurement requirements . 39
7.1 General . 39
7.2 Ambient noise . 39
7.3 Measuring equipment . 40
7.3.1 Measuring instruments. 40
7.3.2 Artificial network (AN) . 40
7.3.3 Voltage probe . 41
7.3.4 Antennas . 41
7.3.5 Artificial hand . 42
7.4 Frequency measurement . 42
7.5 Configuration of equipment under test. 42
7.5.1 General . 42
7.5.2 EUT cables and components . 45
7.5.3 Connection to the electricity supply network on a test site . 46
7.5.4 Measurements of robots . 49
7.6 Load conditions of the EUT . 53
7.6.1 General . 53
7.6.2 Medical equipment . 53
7.6.3 Industrial equipment . 55
7.6.4 Scientific, laboratory and measuring equipment . 55
7.6.5 Microwave cooking appliances . 55
7.6.6 Other equipment in the frequency range 1 GHz to 18 GHz . 55
7.6.7 Electric welding equipment . 56
CISPR 11:2024 © IEC 2024 – 3 –
7.6.8 ISM RF lighting equipment . 56
7.6.9 Medium voltage (MV) and high voltage (HV) switchgear . 56
7.6.10 Grid connected power converters . 56
7.6.11 Robots . 57
7.7 Recording of test-site measurement results . 57
7.7.1 General . 57
7.7.2 Conducted emissions . 58
7.7.3 Radiated emissions . 58
8 Special provisions for test site measurements (9 kHz to 1 GHz) . 58
8.1 Ground planes . 58
8.2 Measurement of conducted disturbances . 58
8.2.1 General . 58
8.2.2 Measurements on grid connected power converters . 59
8.2.3 Handheld equipment which is normally operated without an earth
connection . 63
8.3 OATS and SAC for measurements in the range 9 kHz to 1 GHz . 63
8.3.1 General . 63
8.3.2 Validation of the radiation test site (9 kHz to 1 GHz) . 64
8.3.3 Disposition of equipment under test (9 kHz to 1 GHz) . 64
8.3.4 Radiation measurements (9 kHz to 1 GHz) . 65
8.4 Alternative radiation test sites for the frequency range 30 MHz to 1 GHz . 65
8.5 FAR for measurements in the range 30 MHz to 1 GHz . 65
9 Radiation measurements: 1 GHz to 18 GHz . 65
9.1 Test arrangement . 65
9.2 Receiving antenna . 66
9.3 Validation of test site . 66
9.4 Measuring procedure . 66
9.4.1 General . 66
9.4.2 Operating conditions of the EUT (group 2 equipment only) . 67
9.4.3 Peak measurements (group 2 equipment only) . 67
9.4.4 Weighted measurements (group 2 equipment only) . 68
10 Measurement in situ . 69
11 Safety precautions for emission measurements on ISM RF equipment . 70
12 Measurement uncertainty . 70
Annex A (informative) Examples of equipment classification . 71
A.1 General . 71
A.2 Group 1 equipment . 71
A.2.1 General Group 1 equipment . 71
A.2.2 Detailed Group 1 equipment . 71
A.3 Group 2 equipment . 72
A.3.1 General Group 2 equipment . 72
A.3.2 Detailed Group 2 equipment . 72
Annex B (normative) Measurement of electromagnetic radiation disturbance in the
presence of signals from radio transmitters . 73
Annex C (informative) Recommendations of CISPR for protection of certain radio
services in particular areas . 74
C.1 General . 74
C.2 Recommendations for protection of safety-related radio services . 74
– 4 – CISPR 11:2024 © IEC 2024
C.3 Recommendations for protection of specific sensitive radio services . 76
Annex D (informative) Measurements on Grid Connected Power Converters (GCPC) –
Setups for an effective test site configuration . 79
D.1 General information and purpose . 79
D.2 Setup of the test site . 79
D.2.1 Block diagram of test site . 79
D.2.2 DC power supply . 80
D.2.3 AC power source . 80
D.2.4 Other components . 81
D.3 Other test setups . 81
D.3.1 Configuration comprising laboratory AC power source and resistive load . 81
D.3.2 Configuration with reverse power flow into the AC mains . 82
Annex E (informative) Guidance on prevention of saturation effects in mitigation filters
of transformer-less power converters during tests . 84
E.1 General information and purpose . 84
E.2 Recommendations for avoidance of saturation effects in the range 9 kHz to
150 kHz . 85
E.3 Detailed advice . 85
E.3.1 General . 85
E.3.2 Insert of series inductors (or common mode chokes) in the laboratory's
DC power supply chain . 86
E.3.3 Employment of additional common mode decoupling capacitors at the
interface between the AE port of the DC-AN and the laboratory DC
power supply port allocated in the test environment . 87
E.4 Background information . 87
Annex F (normative) Additional requirements for equipment with radio functionality . 90
F.1 Configuration of the EUT during emission tests . 90
F.2 Radiated emissions . 90
F.3 Conducted emissions . 90
Bibliography . 92
Figure 1 – Circuit for disturbance voltage measurements on mains supply . 41
Figure 2 – Artificial hand, RC element . 42
Figure 3 – Example for a typical cable arrangement for measurements of radiated
disturbances in 3 m separation distance, Table-top EUT . 44
Figure 4 – Example for a typical test set up for measurement of conducted and/or
radiated disturbances from a floor standing EUT, 3D view . 45
Figure 5 – EUT boundary determination for radiated disturbance measurements of
robots with extendable/moving arm . 49
Figure 6 – Example of a typical test setup for conducted disturbance measurement on
a floor-standing robot system . 50
Figure 7 – Example of a typical test setup for radiated disturbance measurement on a
floor-standing robot system . 51
Figure 8 – Example of a typical test setup for conducted disturbance measurement on
a combination robot system . 52
Figure 9 – Example of a typical test setup for radiated disturbance measurement on a
combination robot system . 53
Figure 10 – Disposition of medical equipment (capacitive type) and dummy load . 54
CISPR 11:2024 © IEC 2024 – 5 –
Figure 11 – Typical arrangement for measurement of conducted disturbances at LV DC
power ports with the DC-AN used as termination and decoupling unit to the laboratory
DC power source . 60
Figure 12 – Typical arrangement for measurement of conducted disturbances at LV DC
power ports with the DC-AN used as termination and voltage probe . 61
Figure 13 – Typical arrangement for measurement of conducted disturbances at LV DC
power ports with the DC-AN used as voltage probe and with a current probe – 2D
diagram . 62
Figure 14 – Typical arrangement for measurement of conducted disturbances at LV DC
power ports with a DC-AN used as voltage probe and with a current probe – 3D
diagram . 62
Figure 15 – Radiation test site . 64
Figure 16 – Minimum size of metal ground plane . 64
Figure 17 – Decision tree for the measurement of emissions from 1 GHz to 18 GHz of
group 2 equipment operating at frequencies above 400 MHz . 67
Figure D.1 – Test setup for Case 1 (schematic) . 79
Figure D.2 – Test setup for Case 1 (3D view) . 80
Figure D.3 – Test setup for Case 2 (schematic) . 81
Figure D.4 – Test setup for Case 2 (3D view) . 82
Figure D.5 – Test setup for Case 3 (schematic) . 83
Figure D.6 – Test setup for Case 3 (3D view) . 83
Figure E.1 – Flow of the common mode RF current at test site configuration level . 86
Figure E.2 – Blocking of flow of common mode RF current by insert of series inductors . 86
Figure E.3 – Blocking of flow of common mode RF current by employment of additional
CM decoupling capacitors . 87
Figure E.4 – CM termination impedance at the EUT port of a DC-AN – Magnitude-
versus-frequency characteristic in the range 3 kHz to 30 MHz, Example . 88
Figure E.5 – Prevention of saturation of mitigation filters by use of additional
decoupling capacitors . 88
Figure E.6 – Change in the resonant frequency caused by the increase and decrease
in the decoupling capacitor's capacitance . 89
Figure E.7 – DC-AN circuit example where capacitance of blocking capacitors of the
LC decoupling circuit can be increased or decreased . 89
Table 1 – Frequencies in the radio-frequency (RF) range designated by ITU for use as
fundamental ISM frequencies . 19
Table 2 – Disturbance voltage limits for class A group 1 equipment measured on a test
site (AC mains power port). 23
Table 3 – Limits for conducted disturbances of class A group 1 equipment measured
on a test site (DC power port) . 24
Table 4 – Disturbance voltage limits for class B group 1 equipment measured on a test
site (AC mains power port). 24
Table 5 – Disturbance voltage limits for class B group 1 equipment measured on a test
site (DC power port) . 25
Table 6 – Applicability of measurements at DC power ports . 25
Table 7 – Limits for conducted disturbances measured on a test site (wired network
port) . 26
Table 8 – Electromagnetic radiation disturbance limits for class A group 1 equipment
measured on a test site . 27
– 6 – CISPR 11:2024 © IEC 2024
Table 9 – Electromagnetic radiation disturbance limits for class B group 1 equipment
measured on a test site . 27
Table 10 – Required highest frequency for radiated measurements . 28
Table 11 – Electromagnetic radiation disturbance limits for group 1 equipment
measured on a test site . 28
Table 12 – Disturbance voltage limits for class A group 2 equipment measured on a
test site (AC mains power port) . 30
Table 13 – Disturbance voltage limits for class B group 2 equipment measured on a
test site (AC mains power port) . 30
Table 14 – Electromagnetic radiation disturbance limits for class A group 2 equipment
measured on a test site . 32
Table 15 – Electromagnetic radiation disturbance limits for class A EDM and arc
welding equipment measured on a test site . 33
Table 16 – Electromagnetic radiation disturbance limits for class B group 2 equipment
measured on a test site . 33
Table 17 – Electromagnetic radiation disturbance peak limits for group 2 equipment
operating at frequencies above 400 MHz . 34
Table 18 – Electromagnetic radiation disturbance weighted limits for group 2
equipment operating at frequencies above 400 MHz . 35
–1
Table 19 – Electromagnetic radiation disturbance APD level corresponding to 10
limits for class B group 2 equipment operating at frequencies above 400 MHz . 36
Table 20 – Electromagnetic radiation disturbance limits for class A group 1 equipment
measured in situ . 37
Table 21 – Electromagnetic radiation disturbance limits for class A group 2 equipment
measured in situ . 38
Table 22 – Operation modes for fixed robots . 57
Table 23 – Operation modes for mobile robots . 57
Table 24 – Frequency subranges to be used for weighted measurements . 68
Table C.1 – Limits for electromagnetic radiation disturbances for in situ measurements
to protect specific safety-related radio services in particular areas . 74
Table C.2 – Frequency bands allocated for safety-related radio services . 75
Table C.3 – Frequency bands allocated for sensitive radio services . 77
Table F.1 – Disturbance voltage and current limits for group 1 and group 2 equipment
measured on a test site (antenna port) . 91
CISPR 11:2024 © IEC 2024 – 7 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE
_____________
INDUSTRIAL, SCIENTIFIC AND MEDICAL EQUIPMENT –
RADIO-FREQUENCY DISTURBANCE CHARACTERISTICS –
LIMITS AND METHODS OF MEASUREMENT
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
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6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
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9) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). IEC takes no position concerning the evidence, validity or applicability of any claimed patent rights in
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the latest information, which may be obtained from the patent database available at https://patents.iec.ch. IEC
shall not be held responsible for identifying any or all such patent rights.
International Standard CISPR 11 has been prepared by CISPR Subcommittee B: Interference
relating to industrial, scientific and medical radio-frequency apparatus, to other (heavy)
industrial equipment, to overhead power lines, to high voltage equipment and to electric traction.
This seventh edition cancels and replaces the sixth edition published in 2015,
Amendment 1:2016 and Amendment 2:2019. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) introduction of limits for radiated disturbances in the frequency range above 1 GHz for
group 1 equipment in line with the requirements given in the generic emission standards;
b) introduction of limits for conducted disturbances on the wired network port in line with the
requirements given in the generic emission standards;
– 8 – CISPR 11:2024 © IEC 2024
c) introduction of requirements for equipment which incorporates radio transmit/receive
functions;
d) introduction of definitions for various types of robots;
e) consideration of some particular conditions when measuring robots, such as measurement
setups and operating modes of robots.
The text of this document is based on the following documents:
Draft Report on voting
CIS/B/831/FDIS CIS/B/837/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
This document has the status of a Product Family EMC standard in accordance with IEC
Guide 107, Electromagnetic compatibility – Guide to the drafting of electromagnetic
compatibility publications (2014).
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn, or
• revised.
IMPORTANT – The "colour inside" logo on the cover page of this document indicates
that it contains colours which are considered to be useful for the correct understanding
of its contents. Users should therefore print this document using a colour printer.
CISPR 11:2024 © IEC 2024 – 9 –
The main content of this document is based on CISPR Recommendation No. 39/2 given below:
RECOMMENDATION No. 39/2
Limits and methods of measurement of electromagnetic disturbance characteristics
of industrial, scientific and medical (ISM) radio-frequency equipment
The CISPR
CONSIDERING
a) that ISM RF equipment is an important source of disturbance;
b) that methods of measuring such disturbances have been prescribed by the CISPR;
c) that certain frequencies are designated by the International Telecommunication Union
(ITU) for unrestricted radiation from ISM equipment,
RECOMMENDS
that the latest edition of CISPR 11 be used for the application of limits and methods of
measurement of ISM equipment.
– 10 – CISPR 11:2024 © IEC 2024
INTRODUCTION
This CISPR publication contains, amongst common requirements for the control of RF
disturbances from equipment intended for use in industrial, scientific, and medical electrical
applications, specific requirements for the control of RF disturbances caused by ISM RF
applications in the meaning of the definition of the International Telecommunication Union (ITU),
see also Definition 3.1.18 in this document. CISPR and ITU share their responsibilities for the
protection of radio services in respect of the use of ISM RF applications.
The CISPR is concerned with the control of RF disturbances from ISM RF applications by means
of an assessment of these disturbances either at a standardised test site or, for an individual
ISM RF application which cannot be tested at such a site, at its place of operation. Consequently,
this CISPR Publication covers requirements for both, equipment assessed by means of tests at
standardised test sites or of individual equipment under in situ conditions.
The ITU is concerned with the control of RF disturbances from ISM RF applications during
normal operation and use of the respective equipment at its place of operation (see
Definition 1.15 in the ITU Radio Regulations(2020)). There, use of radio-frequency energy
decoupled from the ISM RF application by radiation, induction or capacitive coupl
...
Die Norm EN IEC 55011:2025 behandelt die relevanten radiofrequenten Störmerkmale von Industrie-, Wissenschafts- und Medizingeräten. Mit dem klaren Fokus auf die Festlegung von Grenzwerten und Messmethoden spielt diese Norm eine entscheidende Rolle bei der Gewährleistung der elektromagnetischen Verträglichkeit (EMV) dieser Geräte. Der Geltungsbereich dieser Norm ist präzise und deckt die notwendigen Aspekte ab, um sowohl Hersteller als auch Anwender bei der Einhaltung von Richtlinien für radiofrequente Störungen zu unterstützen. Die Norm bietet spezifische Vorgaben zu den Störgrenzen, die für verschiedene Typen von Geräten gelten, und beschreibt umfassend die dazugehörigen Testmethoden. Dadurch wird sichergestellt, dass die getesteten Produkte die geforderten EMV-Kriterien erfüllen. Ein wesentlicher Stärke der EN IEC 55011:2025 ist die Harmonisierung der internationalen Standards im Bereich der elektromagnetischen Störungen. Die Integration der in den Fragmenten 1 bis 7 gesammelten Informationen in diesen endgültigen Entwurf vor der FDIS-Phase fördert eine konsistente Anwendung und erleichtert den internationalen Handel. Die Norm reiht sich somit nahtlos in das globale Regelwerk ein und unterstützt die Hersteller dabei, ihre Produkte in verschiedenen Märkten anzubieten. Ein weiterer Aspekt, der die Relevanz der Norm unterstreicht, ist die sich ständig weiterentwickelnde Technologie im Bereich der Industrie-, Wissenschafts- und Medizingeräte. Mit den Fortschritten in der Technik und den damit verbundenen neuen Herausforderungen im Bereich der elektromagnetischen Störungen wird die Notwendigkeit, sich an die neuesten Standards anzupassen, unverzichtbar. Die Norm EN IEC 55011:2025 bietet somit eine zeitgemäße und zukunftssichere Grundlage zur Beurteilung und Sicherstellung der elektromagnetischen Sicherheit von Geräten. Insgesamt kann die Norm als ein bedeutendes Dokument angesehen werden, das die Qualität und Sicherheit technischer Geräte in einem zunehmend technologiegetriebenen Markt gewährleistet. Die praxisorientierten Ansätze zur Messung und Bewertung von radiofrequenten Störungen machen die EN IEC 55011:2025 zu einer unverzichtbaren Ressource für Hersteller und Prüfinstitutionen, die nach den aktuellen Standards der elektromagnetischen Verträglichkeit streben.
SIST EN IEC 55011:2025 표준은 산업, 과학 및 의료 장비의 라디오 주파수 방해 특성에 대한 측정 한계 및 방법을 다루고 있습니다. 이 표준의 주요 범위는 방해 전파 특성의 측정 및 평가에 필요한 기술적 기준과 절차를 제공하는 것으로, 전 세계적으로 일관된 전자기적 환경을 보장하기 위해 필수적입니다. 이 표준의 강점은 명확한 측정 방법론과 실질적인 한계를 제시하여 사용자가 정확하고 신뢰할 수 있는 결과를 얻을 수 있도록 도와주는 점입니다. 또한, 최근의 기술 발전과 새로운 응용 프로그램에 맞춰 지속적으로 개정되고 있어, 표준의 최신성을 유지하고 있습니다. EN IEC 55011:2025 표준은 산업현장에서의 전자기 간섭을 관리하고 감소시키기 위한 필수 지침이므로, 산업 장비의 설계 및 제작에 있어 점점 더 중요해지고 있습니다. 이 표준에 따른 규정을 준수함으로써 기업은 제품의 신뢰성 및 경쟁력을 높일 수 있습니다. 결론적으로, SIST EN IEC 55011:2025 표준은 방해 특성의 측정을 위한 강력한 기초를 제공하며, 다양한 분야에서의 응용 가능성을 높이는 중요한 역할을 하고 있습니다. 이는 현대의 기술 환경에서 매우 중요한 요구 사항으로 자리잡고 있습니다.
La norme EN IEC 55011:2025 traite des caractéristiques de perturbation radioélectrique des équipements industriels, scientifiques et médicaux, définissant des limites et des méthodes de mesure précises. Le champ d’application de cette norme est vaste, englobant non seulement les équipements mentionnés, mais également les divers environnements dans lesquels ils sont utilisés. L'un des principaux points forts de cette norme est sa capacité à répondre aux exigences contemporaines en matière de compatibilité électromagnétique, surtout dans un monde où l'utilisation des technologies sans fil augmente. En intégrant des méthodes de mesure actualisées, la norme garantit que les équipements respectent des niveaux de perturbation acceptables, contribuant ainsi à un fonctionnement sans interférences dans des environnements sensibles. De plus, la norme a été revue et mise à jour en 2025, ce qui témoigne de son engagement envers l'évolution des technologies et des besoins industriels. Les modifications apportées lors du passage de la PR A3 à cette nouvelle édition sont le résultat d'une collaboration approfondie, visant à optimiser les procédures de test et les spécifications techniques, assurant ainsi une application plus cohérente et efficace. Enfin, la pertinence de la norme EN IEC 55011:2025 réside dans son rôle essentiel pour garantir la sécurité et la fiabilité des équipements utilisés dans des domaines critiques. En respectant les limites et méthodes établies, les fabricants peuvent assurer la conformité de leurs produits, minimisant ainsi les risques d'interférence et de dysfonctionnement, ce qui est crucial dans le cadre de l'innovation technologique continue.
EN IEC 55011:2025は、産業、科学、医療機器における無線周波数干渉特性に関する重要な基準であり、測定の限界と方法を定めています。この基準のスコープは、無線周波数干渉の特性に関する幅広い指針を提供し、特に2022年5月30日に通報されたフラグメント1から7を含むことで、より詳細な理解を促進しています。 本基準の強みは、国際的に認められた測定方法を明確に明示している点にあります。これにより、各国の企業が製品の無線周波数干渉特性を一貫して評価でき、マーケットにおける競争力を高めることが可能です。また、医療機器や産業機器に特有の要件を考慮し、実用的かつ実績に基づいたガイドラインを提供することで、製品の信頼性を向上させるための基盤を提供します。 この基準の relevance(関連性)は、高度な技術が求められる現代の産業環境において、無線周波数干渉がもたらす潜在的なリスクを理解し軽減するために不可欠です。特に、医療機器関連の製品では、その影響が利用者の健康に直結するため、一層の注意を必要とします。 さらに、2020年10月6日にPRがA3から新しい版へ変更されたことは、IECにおける進展と調和しており、基準が常に最新の技術動向に適応したものであることを示しています。このような継続的な改訂は、業界のニーズに応えるものであり、関連するすべての関係者に対して信頼性の高い基準を確立する助けとなります。 SIST EN IEC 55011:2025は、その包括的なアプローチと実用性から、産業界にとって不可欠な指針となっていることは間違いありません。
The EN IEC 55011:2025 is a comprehensive standard that addresses the radio-frequency disturbance characteristics of industrial, scientific, and medical equipment. The scope of this standard indicates a thorough consolidation of various fragments into a harmonized document, which enhances clarity and coherence in measurements and limits pertaining to radio-frequency disturbances. The initiative to circulate fragments 1 to 7 before merging them into a project report before the final stages showcases a meticulous approach to standard development, ensuring that expert input can refine and enhance its applicability and effectiveness. One of the strengths of the EN IEC 55011:2025 is its robust methodology for measuring radio-frequency disturbance characteristics. The standard delineates precise measurement methods, providing a substantial foundation for industries to comply with regulations effectively, ensuring technology does not interfere with communications or other essential services. Furthermore, the adaptation of this standard to the latest technological advancements reflects its relevance in the rapidly evolving landscape of industrial and medical equipment. The standard is particularly pertinent for manufacturers seeking to align their products with international regulations and enhance market acceptance. Its focus on both limits and methods of measurement ensures that it not only sets the standard but also provides practical guidance on implementation, helping manufacturers adopt best practices in design and testing processes. Overall, EN IEC 55011:2025 stands out for its clarity, emphasis on comprehensive methodology, and relevance to current industry standards. By addressing both the technical and regulatory landscape, it effectively supports stakeholders in navigating the complexities of compliance and fosters innovation within the industrial, scientific, and medical sectors.








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