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

2021-02-25: TC Off confirmed: can be cited without link to legislation as agreed by BT D162/C064, link removed
2019-12-02: NEXT ACTION: TC to prepare ZZ
2019-12-02: TC decision to further process document
2019-01-28 - Assessment is missing.

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 občutljivosti za radijske motnje - Mejne vrednosti in merilne metode - Dopolnilo A2

General Information

Status
Published
Publication Date
09-May-2021
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
05-May-2021
Due Date
10-Jul-2021
Completion Date
10-May-2021

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SLOVENSKI STANDARD
SIST EN 55011:2016/A2:2021
01-junij-2021
Industrijska, znanstvena in medicinska oprema - Karakteristike občutljivosti za
radijske motnje - Mejne vrednosti in merilne metode - Dopolnilo A2
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 55011:2016/A2:2021
ICS:
33.100.10 Emisija Emission
SIST EN 55011:2016/A2:2021 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 55011:2016/A2:2021
---------------------- Page: 2 ----------------------
SIST EN 55011:2016/A2:2021
EUROPEAN STANDARD EN 55011:2016/A2
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2021
ICS 33.100.10
English Version
Industrial, scientific and medical equipment - Radio-frequency
disturbance characteristics - Limits and methods of
measurement
(CISPR 11:2015/A2:2019)

Appareils industriels, scientifiques et médicaux - Industrielle, wissenschaftliche und medizinische Geräte -

Caractéristiques de perturbations radioélectriques - Limites Funkstörungen - Grenzwerte und Messverfahren

et méthodes de mesure (CISPR 11:2015/A2:2019)
(CISPR 11:2015/A2:2019)

This amendment A2 modifies the European Standard EN 55011:2016; it was approved by CENELEC on 2019-02-22. 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.

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 amendment 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,

Turkey 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

© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN 55011:2016/A2:2021 E
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SIST EN 55011:2016/A2:2021
EN 55011:2016/A2:2021 (E)
European foreword

The text of document CIS/B/715A/FDIS, future CISPR 11/A2, prepared by CISPR SC 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 CISPR

"International special committee on radio interference" was submitted to the IEC-CENELEC parallel

vote and approved by CENELEC as EN 55011:2016/A2:2021.
The following dates are fixed:

• latest date by which the document has to be implemented at national (dop) 2021-10-09

level by publication of an identical national standard or by endorsement

• latest date by which the national standards conflicting with the (dow) 2024-04-09

document have to be withdrawn

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.

This document has been prepared under a mandate given to CENELEC by the European Commission

and the European Free Trade Association.
Endorsement notice

The text of the International Standard CISPR 11:2015/A2:2019 was approved by CENELEC as a

European Standard without any modification.
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SIST EN 55011:2016/A2:2021
CISPR 11
Edition 6.0 2019-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
INT ERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE
C OMITÉ INTERNATIONAL SPÉCIAL DES PERTURBATIONS RADIOÉLECTRIQUES
AMENDMENT 2
AMENDEMENT 2
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 978-2-8322-6379-2

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
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SIST EN 55011:2016/A2:2021
– 2 – CISPR 11:2015/AMD2:2019 © IEC 2019
FOREWORD

This amendment 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.

The text of this amendment is based on the following documents:
FDIS Report on voting
CIS/B/715A/FDIS CIS/B/719/RVD

Full information on the voting for the approval of this amendment can be found in the report

on voting indicated in the above table.

The committee has decided that the contents of this amendment and the base publication will

remain unchanged until the stability date indicated on the IEC website under

"http://webstore.iec.ch" in the data related to the specific publication. At this date, the

publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
_____________
Introduction to the amendment
This AMD 2 combines the contents of two fragments which have been circulated as
CIS/B/688/CDV (f2) and CIS/B/697/CDV (f3).
Fragment 2: Requirements for semiconductor power converters (SPC)

CISPR 11 Ed. 6.1 needs to be supplemented with further information for full inclusion of type

test requirements for SPCs specified hereafter. These requirements apply only to the

following types of equipment:

a) power conversion equipment intended for assembly into photovoltaic power generating

systems, such as grid connected power converters (GCPCs) and d.c. to d.c. converters,

b) GCPCs intended for assembly into energy storage systems.

Fragment 3: Improvement of repeatability for measurements in the frequency range 1-18 GHz

Based on the comments from the National Committees on CIS/B/662/DC, CIS/B/WG1 decided

on its meeting in Hangzhou 2016 to amend the test procedure for group 2 equipment in the

frequency range 1 to 18 GHz for the following reasons:

a) CISPR 11 allows final measurements on group 2 equipment operating at frequencies

above 400 MHz with two different weighting functions, the traditional “LogAV detector” with

a video bandwidth of 10 Hz and the new APD method, where the Amplitude Probability

Distribution is evaluated.
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SIST EN 55011:2016/A2:2021
CISPR 11:2015/AMD2:2019 © IEC 2019 – 3 –

With the alignment of emission requirements for sources of fluctuating emissions with those

generating CW-type emissions (Fraction 4 of the last general maintenance of CISPR 11) for

most of the frequency range 1 to 18 GHz the peak detector is used mostly for preliminary

measurements, while the number of final measurements with the LogAV detector has been

increased from 2 frequencies to max. 7 frequencies.

In parallel, with fraction 3, the APD detector has been introduced, but only with the

traditional 2 final frequencies (one in the range 1 GHz to 2.4 GHz and one in the range

2,5 GHz to 18 GHz).

The number of final frequencies to be measured should be aligned for both weighting

functions.

b) During practical measurements cases have been observed, where the critical frequency

changed between preliminary and final measurement by more than 5 MHz. The range of

10 MHz for weighted measurements (±5 MHz from highest peak emission) seems
therefore not always to be sufficient.

An extension of this frequency range seems advisable and could increase the repeatability.

In the range 11,7 to 12,7 GHz, an EUT fails immediately if one peak exceeds the limit of

73 dB[µV/m]. Observations on a big number of different microwave ovens have shown that

during the final measurement (at least 2 min) such peaks may occur very seldom, and with a

very short duration, and an estimated overall duration of less than 1 % of the measuring time.

A state-of-the-art digital communication service should be able to tolerate such peaks.

Meanwhile, in countries where broadcasting systems, which are already standardized and

widely spread and is difficult to avoid disturbance by such peaks, are under operation,

additional limits could be separately introduced as necessary.

c) The repeatability of the peak measurement on microwave ovens is poor. Moreover, the

sheer height of the highest peak emission, without information on its duration and

repetition rate, provides very limited information on the real disturbance potential.

Measurements with both of the weighting methods have a significantly better repeatability and

should, by their physical nature, give a better judgement for the disturbing potential of the

EUT on digital radio services.

d) The conditions for preliminary and final measurements became ambiguous in Edition 6.0

(CISPR 11:2015), particularly regarding the required test time. Furthermore, it has been

found that, in some cases, a duration of 20 s for the preliminary peak measurement may

not be enough. To further increase the repeatability, WG1 decided not to divide the peak

measurements anymore into preliminary and final measurements, but to require a 2-

minute max hold peak measurement at every azimuth.

CISPR SC/B WG1 agreed to present the following proposals to the National Committees:

1) Define the same 7 final frequency ranges for the APD method as already defined for the

LogAV method (detector).
2) Extend the frequency range for the final weighted measurement to 20 MHz.

For the APD method this would mean to measure on 5 final frequencies, the critical frequency

itself, +/− 5 MHz and +/− 10 MHz.

For the LogAV detector, the requirement remains to perform for the final measurements at

least 5 consecutive sweeps in max hold mode. The test time increases accordingly, and

coverage of the fluctuations is the same as before.
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SIST EN 55011:2016/A2:2021
– 4 – CISPR 11:2015/AMD2:2019 © IEC 2019

3) Change the peak limit in Table 13 to a constant value of 70 dB[µV/m] throughout the

frequency range and replace the requirement of a final peak measurement in the range

11,7 GHz to 12,7 GHz by a requirement of an additional weighted measurement at the

frequency of the highest peak emission in this range. This may lead to a maximum of

8 final weighted measurements.

4) Discard the distinction between preliminary and final peak measurements and make

instead the peak measurements on all azimuths for 2 minutes.
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SIST EN 55011:2016/A2:2021
CISPR 11:2015/AMD2:2019 © IEC 2019 – 5 –
3 Terms and definitions

Add, after the existing definition 3.22 in CISPR 11:2015/AMD1:2016, the following new term

and definition:
3.23
power conversion equipment

electrical device converting one form of electrical power to another form of electrical power

with respect to voltage, current, frequency, phase and the number of phases
[SOURCE: IEC 62920:2017 3.3]
6.2.1.1 General
Replace the last paragraph by the following new paragraph:

The limits for the LV d.c. power ports specified hereafter apply only to the following types of

equipment:

a) power conversion equipment intended for assembly into photovoltaic power generating

systems;

b) grid connected power converters (GCPCs) intended for assembly into energy storage

systems.
6.2.1.3 Frequency range 150 kHz to 30 MHz
Add the following new paragraph and the new Table 19 after Table 5:

For measurements at LV d.c. power ports, the applicability criteria in accordance with

Table 19 apply.
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