Industrial, scientific and medical equipment - Radio-frequency disturbance characteristics - limits and methods of measurement

Deletion of the annexes dealing with Statistical assessment of series produced equipment.
This Common Modification will cover the base document of EN 55011:2016 + A1 & A2 (from CISPR) + A11:2020 (of CLC) and whatever is presently in the pipeline.  This homegrown Common Mod (prAA) is to delete 80/80 rule mentioned in all the available Amendments from CISPR and CLC homegrown Amendment (A11)  in order to meet EC's expectation and regulatory requirements.

Appareils industriels, scientifiques et médicaux - Caractéristiques de perturbations radioélectriques - Limites et méthodes de mesure

Industrijska, znanstvena in medicinska oprema - Karakteristike radio-frekvenčne motnje - Mejne vrednosti in merilne metode - Dopolnilo AB

General Information

Status
Not Published
Public Enquiry End Date
29-Apr-2023
Current Stage
98 - Abandoned project (Adopted Project)
Start Date
10-Mar-2025
Due Date
15-Mar-2025
Completion Date
10-Mar-2025

Relations

Overview

EN 55011:2016/prAB is a CLC draft Common Modification to the established EN 55011:2016 family (including A1, A2 and CLC A11:2020). It updates the radio‑frequency disturbance characteristics - limits and methods of measurement for industrial, scientific and medical (ISM) equipment. The prAB modification clarifies scope and measurement practice, removes statistical annexes related to series production, and implements a homegrown removal of the so‑called 80/80 rule to align with European Commission expectations and regulatory requirements.

Key scope points:

  • Applies to industrial, scientific and medical equipment and domestic appliances that generate or use RF energy.
  • Frequency coverage: generally 0 Hz to 400 GHz; for ISM RF applications specifically 9 kHz to 18 GHz.
  • Includes ISM lighting equipment and UV irradiators within ITU‑defined ISM bands.
  • Excludes product families covered by other CISPR product standards.

Key Topics and Requirements

  • Measurement locations: Class A equipment may be measured on a test site or in situ (if size/operation prevents test‑site testing); Class B requires a test site.
  • Limits and tables: Footnotes for emission limit tables updated to clarify applicability by rated power (e.g., >20 kVA, >75 kVA), installation conditions (dedicated transformer, not LV overhead lines), and installer responsibilities.
  • Installation and mitigation: Product documentation must give guidance on installation measures and indicate when additional filtering or separation distances (>30 m) are expected to meet limits.
  • Test methods and instrumentation: Updates to requirements for voltage probes, loop and broadband antennas (below 30 MHz loop; 30 MHz–1 GHz per CISPR 16‑1‑4), artificial mains networks (AMN), and measurement reproducibility.
  • In situ testing: Clarified conditions and notes for on‑site verification, including when cable positions and unit operation can be varied.
  • Special cases: e.g., diagnostic X‑ray generators operating intermittently have quasi‑peak limits increased by 20 dB per the draft.
  • Administrative changes: Deletion of specific subclauses (3.19, 5.3), removal of Annex H, and replacement of Annex ZZ to reflect EU Directive alignment.

Applications and Users

Who uses EN 55011:2016/prAB:

  • EMC engineers and test laboratories performing emissions testing for ISM equipment.
  • Product designers and compliance teams preparing technical documentation and installation guidance.
  • Manufacturers of high‑power industrial systems (photovoltaic inverters, generators, diagnostic X‑ray, ISM RF apparatus).
  • National standards bodies and conformity assessors implementing EU EMC requirements.

Practical value:

  • Provides harmonized measurement methods and limits for RF disturbance compliance.
  • Helps manufacturers specify installation and mitigation measures to avoid harmful interference.
  • Supports regulatory alignment for placing ISM equipment on the EU market.

Related Standards

  • CISPR 11 / EN 55011 family (base standard and amendments A1, A2)
  • CISPR 16 series (measurement apparatus and antennas)
  • Relevant EU EMC Directive / Standardization Request (see Annex ZZ replacement)
Draft
SIST EN 55011:2016/oprAB:2023
English language
11 pages
sale 10% off
Preview
sale 10% off
Preview
e-Library read for
1 day

Standards Content (Sample)


SLOVENSKI STANDARD
01-april-2023
Industrijska, znanstvena in medicinska oprema - Karakteristike občutljivosti za
radijske motnje - Mejne vrednosti in merilne metode - Dopolnilo AB
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
Ta slovenski standard je istoveten z: EN 55011:2016/prAB
ICS:
33.100.10 Emisija Emission
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD DRAFT
EN 55011:2016
NORME EUROPÉENNE
EUROPÄISCHE NORM
prAB
February 2023
ICS 33.100.10 -
English Version
Industrial, scientific and medical equipment - Radio-frequency
disturbance characteristics - limits and methods of measurement
To be completed To be completed
This draft amendment prAB, if approved, will modify the European Standard EN 55011:2016; it is submitted to CENELEC members for
enquiry.
Deadline for CENELEC: 2023-05-12.

It has been drawn up by CLC/TC 210.

If this draft becomes an amendment, CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which
stipulate the conditions for giving this amendment the status of a national standard without any alteration.

This draft amendment was established by CENELEC 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.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.

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
© 2023 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Project: 75007 Ref. No. EN 55011:2016/prAB E

Contents Page
1 European foreword . 3
2 1 Modification to Clause 1, “Scope” . 4
3 2 Deletion of 3.19 . 4
4 3 Deletion of subclause 5.3 . 4
5 4 Modification to subclause 6.1. 4
6 5 Modification to subclause 6.2.1.3 . 4
7 6 Modification to subclause 6.2.2.3 . 5
8 7 Modification to subclause 6.3.1.3 . 6
9 8 Modification to subclause 7.1.3 . 6
10 9 Modification to subclause 7.3.3 . 6
11 10 Modification to subclause 7.3.4.1 . 6
12 11 Modification to subclause 7.3.4.2.1 . 6
13 12 Modification to subclause 7.5.1 . 7
14 13 Modification to subclause 7.5.2 . 7
15 14 Modification to subclause 7.5.3.1.1 . 7
16 15 Modification to subclause 7.5.3.1.2 . 7
17 16 Modification to subclause 7.5.3.2 . 8
18 17 Modification to subclause 7.6.3 . 8
19 18 Modification to subclause 7.6.5 . 8
20 19 Modification to subclause 7.6.8 . 8
21 20 Modification to subclause 7.6.10.1 . 8
22 21 Modification to subclause 7.7.1 . 8
23 22 Modification to subclause 8.1. 9
24 23 Modification to subclause 8.2.2.1 . 9
25 24 Modification to subclause 8.2.2.2.1 . 9
26 25 Modification to subclause 8.2.2.2.3.3 . 9
27 26 Modification to subclause 8.2.3 . 9
28 27 Modification to subclause 8.5. 9
29 28 Modification to Clause 12 . 10
30 29 Deletion of Annex H . 10
31 30 Replacement of Annex ZZ . 10
32 Annex ZA (informative) Relationship between this European standard and the essential
33 requirements of Directive 2014/30/EU [2014 OJ L96] aimed to be covered . 11
35 European foreword
36 This document (EN 55011:2016/prAB:2023) has been prepared by CLC/TC 210 “Electromagnetic
37 Compatibility (EMC)”, the secretariat of which is held by BSI.
38 This document is currently submitted to the Enquiry.
39 The following dates are proposed:
• latest date by which the existence of this (doa) dor + 6 months
document has to be announced at national
level
• latest date by which this document has to be (dop) dor + 12 months
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards (dow) dor + 36 months
conflicting with this document have to be (to be confirmed or
withdrawn modified when voting)
40 This document has been prepared under a Standardization Request given to CENELEC by the European
41 Commission and the European Free Trade Association, and supports essential requirements of EU
42 Directive(s) / Regulation(s).
43 For the relationship with EU Directive(s) / Regulation(s), see informative Annex ZZ, which is an integral part of
44 this document.
45 1 Modification to Clause 1, “Scope”
46 Replace the text with the following:
47 “This document covers emission requirements related to radio-frequency (RF) disturbances and applies to
48 industrial, scientific and medical electrical equipment operating in the frequency range 0 Hz to 400 GHz and to
49 domestic and similar appliances designed to generate and/or use locally radio-frequency energy.
50 For ISM RF applications in the meaning of the definition found in the ITU Radio Regulations (see
51 Definition 3.13), this document covers emission requirements related to radio-frequency disturbances in the
52 frequency range of 9 kHz to 18 GHz.
53 Requirements for ISM RF lighting equipment and UV irradiators operating at frequencies within the ISM
54 frequency bands defined by the ITU Radio Regulations are contained in this document.
55 Equipment covered by other CISPR product and product family emission standards are excluded from the
56 scope of this document.”
57 2 Deletion of 3.19
58 Delete term entry 3.19.
59 3 Deletion of subclause 5.3
60 Delete the entire subclause 5.3.
61 4 Modification to subclause 6.1
62 Replace the text with the following:
63 “Class A equipment shall be measured either on a test site or when that is impossible due to size, complexity
64 or operating conditions, it may then be measured in situ.
65 Class B equipment shall be measured on a test site.
66 Measurements need only be performed in frequency ranges where limits are specified. The lower limit shall
67 apply at all transition frequencies.
68 Measuring apparatus and methods of measurement are specified in Clauses 7, 8 and 9.
69 Where this document gives options for testing against particular requirements with a choice of test methods,
70 compliance may be shown using any of those test methods, together with the specified limits and any relevant
71 restrictions.
72 NOTE In any situation involving the retesting of equipment, reproducibility of results is best achieved if the original
73 test method is used.”
74 5 Modification to subclause 6.2.1.3
75 Replace the table footnotes of Table 2 with the following footnotes:
76 “
a
These limits apply to equipment with a rated power > 20 kVA and intended to be connected to a dedicated power
transformer or generator, and which is not connected to low voltage (LV) overhead power lines. For equipment not
intended to be connected to a user specific power transformer the limits for ≤ 20 kVA apply. Information shall be provided
on installation measures that can be used to reduce emissions from the installed equipment. In particular it shall be
indicated that this equipment is intended to be connected to a dedicated power transformer or generator and not to LV
overhead power lines.
b
These limits apply only to high power electronic systems and equipment with a rated power greater than 75 kVA when
intended to be installed as follows:
—  installation is supplied from a dedicated power transformer or generator, and which is not connected to Low Voltage
(LV) overhead power lines,
—  installation is physically separated from residential environments by distance greater than 30 m or by a structure which
acts as a barrier to radiated phenomena,
—  the product documentation shall indicate that this equipment meets the disturbance voltage limits for high power
electronic systems and equipment of rated input power > 75 kVA and provide information on installation measures to be
applied by the installer. In particular, it shall be indicated that this equipment is intended to be used in an installation which
is powered by a dedicated power transformer or generator and not by LV overhead power lines.
c
Selection of the appropriate set of limits shall be based on the rated a.c. power stated by the product documentation.
77 “
78 Replace the table footnotes of Table 3 with the following footnotes:
79 “
In certain frequency ranges, the limits in this table decrease linearly with logarithm of frequency.
a
Selection of the appropriate set of limits shall be based on the rated a.c. power stated by the product documentation.
b
These limits apply to equipment with a rated power > 20 kVA and intended to be installed in a large photovoltaic power
generating system by a professional. In the manual accompanying the product, information shall be provided on mitigation
measures that can be used to reduce emissions from the installed equipment, with the goal of preventing harmful
interference to radio reception in a distance of 30 m from the installation. In particular it shall be indicated that this
equipment can be equipped with additional filtering and that installation is physically separated from residential
environments by distance greater than 30 m. The installer is invited to check the mitigated installation against CISPR 11 in
situ measurements as indicated in Clause 6.4 of this document.
80 “
81 Replace the paragraph after Table 4 with the following:
82 “For diagnostic X-ray generators operating in intermittent mode the quasi-peak limits of Table 2 or Table 4 are
83 increased by 20 dB.”
84 Replace the table footer of Table 19 with the following:
85 “
L: maximum length of a cable (in metres) connected to an LV d.c. power port, and provided with the product or as
specified in the product documentation. Where no maximum cable length is specified, L shall be considered as longer than
30 m.
a
No measurements are required if the equipment is installed when applying at least one of the following measures:
—  symmetrical d.c. port line configuration,
—  installation internal to the building,
—  grounded metallic cable trays,
—  use of correctly grounded shielded cables,
—  manage a separation distance that acts as a barrier from residential environment (e.g. greater than 30 m).
a)
If exception is used, the installer may refer to Clause 10 for in situ measurement.
86 “
87 6 Modification to subclause 6.2.2.3
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.

Loading comments...

Frequently Asked Questions

SIST EN 55011:2016/oprAB:2023 is a draft published by the Slovenian Institute for Standardization (SIST). Its full title is "Industrial, scientific and medical equipment - Radio-frequency disturbance characteristics - limits and methods of measurement". This standard covers: Deletion of the annexes dealing with Statistical assessment of series produced equipment. This Common Modification will cover the base document of EN 55011:2016 + A1 & A2 (from CISPR) + A11:2020 (of CLC) and whatever is presently in the pipeline. This homegrown Common Mod (prAA) is to delete 80/80 rule mentioned in all the available Amendments from CISPR and CLC homegrown Amendment (A11) in order to meet EC's expectation and regulatory requirements.

Deletion of the annexes dealing with Statistical assessment of series produced equipment. This Common Modification will cover the base document of EN 55011:2016 + A1 & A2 (from CISPR) + A11:2020 (of CLC) and whatever is presently in the pipeline. This homegrown Common Mod (prAA) is to delete 80/80 rule mentioned in all the available Amendments from CISPR and CLC homegrown Amendment (A11) in order to meet EC's expectation and regulatory requirements.

SIST EN 55011:2016/oprAB:2023 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.

SIST EN 55011:2016/oprAB:2023 has the following relationships with other standards: It is inter standard links to SIST EN IEC 55011:2025, SIST EN 55011:2016. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

SIST EN 55011:2016/oprAB:2023 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 SIST EN 55011:2016/oprAB:2023 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 SIST standards.