CLC/TR 50627:2015

SLOVENSKI STANDARD
01-januar-2016
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Study Report on Electromagnetic Interference between Electrical Equipment/Systems in
the Frequency Range Below 150 kHz Ed. 2
Ta slovenski standard je istoveten z: CLC/TR 50627:2015
ICS:
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.

TECHNICAL REPORT CLC/TR 50627

RAPPORT TECHNIQUE
TECHNISCHER BERICHT
November 2015
ICS 33.100.01
English Version
Study Report on Electromagnetic Interference between Electrical
Equipment/Systems in the Frequency Range Below 150 kHz
Rapport d'étude sur les perturbations électromagnétiques Studienbericht über elektromagnetische Interferenz
entre les équipements / systèmes électriques entre eux zwischen elektrische Betriebsmittel/Systeme im
dans la plage des fréquences inférieure à 150 kHZ Frequenzbereich unter 150 kHz

This Technical Report was approved by CENELEC on 2015-11-02.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, 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: Avenue Marnix 17, B-1000 Brussels
© 2015 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. CLC/TR 50627:2015 E
Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 General . 6
3 The frequency range from 2 kHz to 150 kHz . 8
3.1 Challenges in terms of EMI . 8
3.2 Frequency utilization . 10
3.3 The impact of voltage / current shapes . 12
3.4 Interaction of equipment . 16
4 Emissions, measurement and test results . 16
4.1 General . 16
4.2 Noise measured in a block of flats . 17
4.3 Lighting equipment . 17
4.3.1 General . 17
4.3.2 Compact lamps . 17
4.3.3 Fluorescent lamps . 18
4.3.4 LEDs . 19
4.4 Portable mains powered tools . 20
4.5.1 General . 21
4.5.2 Austrian lab tests on inverters . 22
4.5.3 Active Infeed Converters . 22
4.5.4 PV inverters . 24
4.5.5 Italian lab and field measurements . 25
4.5.6 Power electronics in an Intelligent Distribution Station . 27
4.6 Power supplies. 28
4.6.1 General . 28
4.6.2 Power supply with PLC signal on DC side . 28
4.6.3 Power supply of a TV receiver . 28
4.6.5 Power supplies in communication technology . 29
4.7 Other equipment — Rectifier in a cell tower . 31
5 EMI cases, measurement and test results . 32
5.1 General . 32
5.2 EMI due to conducted emissions . 33
5.2.1 EMI to lighting equipment . 33
5.2.2 EMI to electricity meters . 33
5.2.3 EMI to mains communicating systems (MCS) . 34
5.2.4 EMI to medical equipment . 50
6 Standardization for the frequency range 2 kHz to 150 kHz. Conformity and time . 57
6.1 Standardization situation . 57
6.2 Conformity and time . 62
7 Options for improved safeguarding EMC . 62
7.1 For equipment / systems in general . 62
7.1.1 Filter application . 62
7.1.2 Move from PLC to RF . 63
7.1.3 Frequency allocation management. 63
7.1.4 Move to broadband lines . 64
7.1.5 Notching on transmitter side vs. selectivity on receiver side . 65
7.2 For PLC in particular — Move to higher frequencies. 67
8 Conclusions . 69
9 Recommendations . 74
Annex A (informative) Acronyms and abbreviations . 77
Bibliography . 80

European foreword
This document (CLC/TR 50627:2015) has been prepared by CLC/SC 205A "Mains communicating systems".
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CENELEC [and/or CEN] 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.
This Technical Report provides useful information for standards related to the following European Mandate(s):
M/441, M/490.
This Technical Report is based on the Study Report “Electromagnetic Interference between Electrical
Equipment / Systems in the Frequency Range below 150 kHz” of SC 205A (SC 205A/Sec0339/R:April 2013)
(second edition) [1b], with some update according to the developments that have taken place since.
Introduction
1)
In April 2010, CLC/SC 205A published their first Study Report on “Electromagnetic Interference between
Electrical Equipment in the Frequency Range below 150 kHz” [1a]. Related studies had been made and
information gathered due to first cases of EM interference, with Touch-dimmer lamps (TDLs) as an EMI victim,
an inverter as an EMI source, and automated meter reading systems using powerline communication (AMR-
PLC) figuring as EMI victims as well as sources.
Following this first CLC/SC 205A Study Report, its second edition [1b] and, based on it, this Technical Report
aims at:
a) highlighting the broad relevance of recognized electromagnetic interference for safeguarding EMC
also in the frequency range 2 kHz – 150 kHz;
b) extending knowledge about:
1) EMI cases having been observed between electrical equipment in the frequency range
2 kHz to 150 kHz, with an emphasis on interference between:
i) electrical equipment and its non-intentional emissions (NIE);
ii) mains communicating systems (MCS) using (powerline
communication) PLC technology with intentional signal injection for the
transmission of information over the electricity supply network;
2) different mechanisms causing interference to electrical equipment due to non-intentional
or intentional voltage/current components in the considered frequency range;
as a basis for evaluating the need for closing the recognized gap in standardization as highlighted in the
first edition, and considering the recent developments; that:
c) without evaluating certain types of electrical equipment concerning applied technology or priority;
d) and with regard to:
1) problems having occurred with operational equipment of distribution network operators
(DNOs), in particular related to smart metering and smart grids control and monitoring
equipment;
2) complaints by network users to deliverers and subsequently by deliverers to DNOs or by
network users directly to their DNO, about degradation or loss of function of certain
electrical equipment;
3) in both cases network users as well as deliverers are primarily annoyed by the troubles
they are experiencing with electrical equipment they have traded or bought, trusting in its
interference-free operability, which they expect due to the CE mark.
This TR is based on:
e) reports on EMI cases and, following related complaints, investigations performed by an accredited
test house, universities, DNOs, manufacturers and consultants;
f) measurements performed by an accredited test house, universities, DNOs, manufacturers and
consultants. In both cases to extend knowledge of emissions from different equipment in the
considered frequency range, in case of the occurrence of EMI:
1) to identify the actual interference source;
2) to clarify the interference mechanism;
3) to evaluate mitigation measures;
g) the present standardization situation and its actual development.

1) CLC/SC 205A Mains communicating systems.
1 Scope
This Technical Report is based on two Study Reports of CLC/SC 205A, having been worked out by their Task
Force EMI [1a][1b] and provides the results and findings of these documents. It was created with the help and
input from a broad range of involved stakeholders: network operators, equipment manufacturers, universities,
accredited test houses and consultants.
Beside the actual standardization situation it reflects the current emission situation found in supply networks
and installations and describes electromagnetic interference (EMI) cases from twelve countries; investigation
and analysis of the latter show a wide range of different types of electrical devices to be considered as a
source or a victim of related EMI.
This T
...