SIST EN 50065-1:2011

Signalling on low-voltage electrical installations in the frequency range 3 kHz to 148,5 kHz - Part 1: General requirements, frequency bands and electromagnetic disturbances

This standard applies to electrical equipment using signals in the frequency range 3 kHz to 148,5 kHz to transmit information on low voltage electrical systems, either on the public electricity distribution network or within installations in consumers’ premises.
It specifies the frequency bands allocated to the different applications, limits for the terminal output voltage in the operating band and limits for conducted and radiated disturbance. It also gives the methods of measurement.
It does not specify the modulation methods, the coding methods or functional features (except those for the prevention of mutual interference).
Environmental requirements and tests are not included.
NOTE 1 Compliance with this standard does not imply permission to establish communication with locations outside the consumer’s installation or with other consumers through the public electricity distribution network where this would not otherwise be allowed.
The object of the standard is to limit mutual influence between transmission equipment in electrical installations and between such equipment and other equipment. In addition this standard is intended to limit interference caused by signal transmission equipment to sensitive electronic equipment. However, complete freedom from such interference cannot be assured.
NOTE 2 Designers should consider signalling systems in conformance with this standard when determining immunity for electrical equipment.

Signalübertragung auf elektrischen Niederspannungsnetzen im Frequenzbereich 3 kHz bis 148,5 kHz - Teil 1: Allgemeine Anforderungen, Frequenzbänder und elektromagnetische Störungen

Transmission de signaux sur les réseaux électriques basse tension dans la bande de fréquences de 3 kHz à 148,5 kHz - Partie 1: Règles générales, bandes de fréquences et perturbations électromagnétiques

Signalizacija po nizkonapetostnih električnih napeljavah v frekvenčnem območju od 3 kHz do 148,5 kHz - 1. del: Splošne zahteve, frekvenčna območja in elektromagnetne motnje

Ta standard velja za električno opremo, ki uporablja signale v frekvenčnem območju od 3 kHz do 148,5 kHz, za oddajanje informacij na nizkonapetostnih električnih sistemih ali na javnem omrežju za distribucijo elektrike oziroma v napeljavah v prostorih potrošnikov.
Določa frekvenčne pasove, razporejene za različne aplikacije, meje za končne izhodne napetosti v delovnem pasu in meje za vodene in oddajane motnje. Prav tako podaja metode merjenja.
Ne določa metod modulacij, metod kodiranja ali funkcionalnih lastnosti (razen tistih za preprečevanje medsebojne motnje).
Okoljske zahteve in preskusi niso vključeni.
OPOMBA 1: Skladnost s tem standardom ne pomeni dovoljenja za vzpostavitev komunikacije z lokacijami zunaj napeljav potrošnika ali z drugimi potrošniki prek javnega omrežja za distribucijo elektrike, kjer to sicer ne bi bilo dovoljeno.
Predmet standarda je omejevanje medsebojnega vpliva med opremo za oddajanje v električnih napeljavah in med tako ter drugačno opremo. Poleg tega je ta standard namenjen omejevanju motenj, ki jih občutljivi elektronski opremi povzroča oprema za oddajanje signalov. Vendar popolna odsotnost takih motenj ne more biti zagotovljena.
OPOMBA 2 Projektanti morajo pri določevanju odpornosti električne opreme upoštevati signalne sisteme v skladu s tem standardom.

General Information

• Status: Published
• Publication Date: 11-May-2011
• ICS: 33.040.30 - Switching and signalling systems
• ICS: 91.140.50 - Electricity supply systems
• Technical Committee: ELI - Electrical and communication installations
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 04-May-2011
• Due Date: 09-Jul-2011
• Completion Date: 12-May-2011
• Directive: 2004/108/EU - DIRECTIVE 2004/108/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 15 December 2004 on the approximation of the laws of the Member States relating to electromagnetic compatibility and repealing Directive 89/336/EEC
• Directive: 2014/30/EU - Directive 2014/30/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to electromagnetic compatibility (recast)
• Ref Project: EN 50065-1:2011 - Signalling on low-voltage electrical installations in the frequency range 3 kHz to 148,5 kHz - Part 1: General requirements, frequency bands and electromagnetic disturbances

Relations

• Replaces: SIST EN 50065-1:2003 - Signalling on low-voltage electrical installations in the frequency range 3 kHz to 148,5 kHz -- Part 1: General requirements, frequency bands and electromagnetic disturbances
• Effective Date: 01-Jun-2011
• Replaces: SIST EN 50065-1:2003/A1:2010 - Signalling on low-voltage electrical installations in the frequency range 3 kHz to 148,5 kHz -- Part 1: General requirements, frequency bands and electromagnetic disturbances
• Effective Date: 01-Jun-2011
• Replaces: SIST EN 50065-1:2003/A1:2010 - Signalling on low-voltage electrical installations in the frequency range 3 kHz to 148,5 kHz -- Part 1: General requirements, frequency bands and electromagnetic disturbances
• Effective Date: 28-Jan-2023
• Replaces: SIST EN 50065-1:2003 - Signalling on low-voltage electrical installations in the frequency range 3 kHz to 148,5 kHz -- Part 1: General requirements, frequency bands and electromagnetic disturbances
• Effective Date: 28-Jan-2023
• Revised: SIST EN 50065-1:2003 - Signalling on low-voltage electrical installations in the frequency range 3 kHz to 148,5 kHz -- Part 1: General requirements, frequency bands and electromagnetic disturbances
• Effective Date: 25-Mar-2014
• Revised: SIST EN 50065-1:2003/A1:2010 - Signalling on low-voltage electrical installations in the frequency range 3 kHz to 148,5 kHz -- Part 1: General requirements, frequency bands and electromagnetic disturbances
• Effective Date: 25-Mar-2014
• Replaces: SIST EN 50065-1:2003/A1:2010 - Signalling on low-voltage electrical installations in the frequency range 3 kHz to 148,5 kHz -- Part 1: General requirements, frequency bands and electromagnetic disturbances
• Effective Date: 07-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 50065-1:2011
01-junij-2011
1DGRPHãþD
SIST EN 50065-1:2003
SIST EN 50065-1:2003/A1:2010
6LJQDOL]DFLMDSRQL]NRQDSHWRVWQLKHOHNWULþQLKQDSHOMDYDKYIUHNYHQþQHPREPRþMX
RGN+]GRN+]GHO6SORãQH]DKWHYHIUHNYHQþQDREPRþMDLQ
HOHNWURPDJQHWQHPRWQMH
Signalling on low-voltage electrical installations in the frequency range 3 kHz to 148,5
kHz - Part 1: General requirements, frequency bands and electromagnetic disturbances
Signalübertragung auf elektrischen Niederspannungsnetzen im Frequenzbereich 3 kHz
bis 148,5 kHz - Teil 1: Allgemeine Anforderungen, Frequenzbänder und
elektromagnetische Störungen
Transmission de signaux sur les réseaux électriques basse tension dans la bande de
fréquences de 3 kHz à 148,5 kHz - Partie 1: Règles générales, bandes de fréquences et
perturbations électromagnétiques
Ta slovenski standard je istoveten z: EN 50065-1:2011
ICS:
33.040.30 Komutacijski in signalizacijski Switching and signalling
sistem systems
91.140.50 Sistemi za oskrbo z elektriko Electricity supply systems
SIST EN 50065-1:2011 en,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 50065-1:2011

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SIST EN 50065-1:2011

EUROPEAN STANDARD
EN 50065-1

NORME EUROPÉENNE
April 2011
EUROPÄISCHE NORM

ICS 33.040.30 Supersedes EN 50065-1:2001 + A1:2010


English version


Signalling on low-voltage electrical installations in the frequency range
3 kHz to 148,5 kHz -
Part 1: General requirements, frequency bands and electromagnetic
disturbances



Transmission de signaux sur les réseaux Signalübertragung auf elektrischen
électriques basse tension dans la bande Niederspannungsnetzen im
de fréquences de 3 kHz à 148,5 kHz - Frequenzbereich 3 kHz bis 148,5 kHz -
Partie 1: Règles générales, bandes de Teil 1: Allgemeine Anforderungen,
fréquences et perturbations Frequenzbänder und elektromagnetische
électromagnétiques Störungen




This European Standard was approved by CENELEC on 2011-03-21. 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 Central Secretariat 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 Central Secretariat 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, Romania,
Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Management Centre: Avenue Marnix 17, B - 1000 Brussels


© 2011 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50065-1:2011 E

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SIST EN 50065-1:2011
EN 50065-1:2011 - 2 -
Foreword

This European Standard was prepared by the CENELEC technical subcommittee SC 205A, Mains
communication systems, of Technical Committee CENELEC TC 205, Home and Building Electronic
Systems (HBES).

The text of the draft was submitted to the Unique Acceptance Procedure and was approved by CENELEC
as EN 50065-1 on 2011-03-21.
This European Standard supersedes EN 50065-1:2001 + A1:2010.
This revision aligns EN 50065-1 with CENELEC Guide 24; this has been done in particular in relation
to the responsibilities of parties involved by replacing with references to common application types
whilst not making technical changes to the standard. In addition the text on common-mode signalling
has been clarified and account taken of use of mains signalling in relation to the charging of electric
vehicles. Additional editorial changes have been made to clarify areas on which there have been
queries.

The following dates were fixed:
– latest date by which the revision has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2012-03-21


– latest date by which the national standards conflicting
with the amendment have to be withdrawn (dow) 2014-03-21

EN 50065 consists of the following parts, under the general title Signalling on low voltage electrical
installations in the frequency range 3 kHz to 148,5 kHz:
Part 1 General requirements, frequency bands and electromagnetic disturbances
Part 2-1 Immunity requirements for mains communications equipment and systems
operating in the range of frequencies 95 kHz to 148,5 kHz and intended for use in
residential, commercial and light industrial environments
Part 2-2 Immunity requirements for mains communications equipment and systems
operating in the range of frequencies 95 kHz to 148,5 kHz and intended for use in
industrial environments
Part 2-3 Immunity requirements for mains communications equipment and systems
operating in the range of frequencies 3 kHz to 95 kHz and intended for use by
electricity suppliers and distributors
Part 4-1 Low voltage decoupling filters – Generic specification
Part 4-2 Low voltage decoupling filters – Safety requirements
Part 4-3 Low voltage decoupling filters – Incoming filter
Part 4-4 Low voltage decoupling filters – Impedance filter
Part 4-5 Low voltage decoupling filters – Segmentation filter
Part 4-6 Low voltage decoupling filters – Phase coupler
Part 7 Equipment impedance
__________

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Contents
Page

1 Scope . 5

2 Normative references . 5

3 Terms and definitions . 5

4 Frequency bands . 7

5 Access protocol . 8

6 Transmitter output voltage . 9

7 Disturbance limits . 17

8 Test conditions . 19

9 Safety considerations . 21

Annexes

Annex A (normative) Method of measurement of the frequency range over which a transmitter device
detects a signal from another device in the frequency range 125 kHz to 140 kHz . 22

Annex B (normative) Method of measurement of the spectral distribution of a transmitting device’s
signal in the frequency range 125 kHz to 140 kHz . 23

Annex C (normative) Methods of measurement (9 kHz to 30 MHz) . 24

Annex D (normative) Methods of measurement of disturbance power (30 MHz to 1 GHz) . 25

Annex E (normative) Attenuation characteristics of measuring instrument above 150 kHz . 27

Annex F (informative) Design for a single artificial network intended to show the performance of a
signalling system . 28

Annex ZZ (informative) Coverage of Essential Requirements of EC Directives . 30

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SIST EN 50065-1:2011
EN 50065-1:2011 - 4 -

Figures Page

Figure 1 Measurement of spectral bandwidth . 10
Figure 2 Idealized equivalent circuit model − DUT port impedance . 11
Figure 3 Example of artificial mains network 3 kHz to 9 kHz . 11
Figure 4 Measurement of output level (single phase) . 12
Figure 5 Example of artificial mains network 9 kHz to 95 kHz and 95 kHz to 148,5 kHz . 13
Figure 6 Measurement of output level in of 3-phase devices transmitting simultaneously
on all phases . 14
Figure 7 Voltage limits for spurious outputs in other bands . 18
Figure 8 Measuring arrangement for equipment the operation of which is dependent on
the transmitter being in circuit (single phase) . 20
Figure A.1 Measuring arrangements for testing the frequency range of the signal detector . 22
Figure F.1a The adaptive network for the frequency range 3 kHz to 148,5 kHz . 28
Figure F.1b The adaptive network connection with the EN 55016-1-2 network . 28
Figure F.2 The nominal EN 55016-1-2:2004, Figure 1a impedance (doubled) and the calculated
impedance between points A and B (Figure F.1b) when the adaptive network is added to
the EN 55016-1-2 network . 29

Tables

Table 1 Summary of maximum transmission levels . 16
Table 2 Limits of mains terminal disturbance voltage in the frequency range
0,15 MHz to 30 MHz . 18
Table 3 Limits of radiated disturbance field strength in the frequency range
30 MHz to 1 000 MHz at a test distance of 10 m . 19
Table 4 Limits of disturbance power . 19
Table B.1 Values of Hi . 23
Table E.1 Attenuation of measuring instrument above 150 kHz . 27

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SIST EN 50065-1:2011
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1 Scope

This standard applies to electrical equipment using signals in the frequency range 3 kHz to 148,5 kHz
to transmit information on low voltage electrical systems, either on the public electricity distribution
network or within installations in consumers’ premises.

It specifies the frequency bands allocated to the different applications, limits for the terminal output
voltage in the operating band and limits for conducted and radiated disturbance. It also gives the
methods of measurement.

It does not specify the modulation methods, the coding methods or functional features (except those
for the prevention of mutual interference).

Environmental requirements and tests are not included.

NOTE 1 Compliance with this standard does not imply permission to establish communication with locations outside
the consumer’s installation or with other consumers through the public electricity distribution network where this would not
otherwise be allowed.

The object of the standard is to limit mutual influence between transmission equipment in electrical
installations and between such equipment and other equipment. In addition this standard is intended to
limit interference caused by signal transmission equipment to sensitive electronic equipment. However,
complete freedom from such interference cannot be assured.

NOTE 2 Designers should consider signalling systems in conformance with this standard when determining immunity
for electrical equipment.


2 Normative references

The following referenced documents are indispensable for the application 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.

IEC 60050-161 International electrotechnical vocabulary – Chapter 161:
Electromagnetic compatibility
EN 55016-1-1 2010 Specification for radio disturbance and immunity measuring apparatus
 and methods – Part 1-1: Radio disturbance and immunity measuring
apparatus – Measuring apparatus
(CISPR 16-1-1:2010)
EN 55016-1-2 2004 Specification for radio disturbance and immunity measuring apparatus
+ A1 2005 and methods – Part 1-2: Radio disturbance and immunity measuring
+ A2 2006 apparatus – Ancillary equipment – Conducted disturbances
(CISPR 16-1-2:2003 + A1:2004 + A2:2006)
EN 55016-1-4 2010 Specification for radio disturbance and immunity measuring apparatus
 and methods – Part 1-4: Radio disturbance and immunity measuring
apparatus – Antennas and test sites for radiated disturbance
measurements (CISPR 16-1-4:2010)
EN 55016-2-2 2004 Specification for radio disturbance and immunity measuring apparatus
+ A1 2005 and methods – Part 2-2: Methods of measurement of disturbances and
+ A2 2005 immunity – Measurement of disturbance power
(CISPR 16-2-2:2003 + A1:2004 + A2:2005)
3 Terms and definitions

The definitions in IEC 60050-161 apply.
For the purposes of this document, the following terms and definitions apply.

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SIST EN 50065-1:2011
EN 50065-1:2011 - 6 -
3.1
application
use of a technology, system, or product
3.2
common-mode signalling
form of signalling which intentionally uses the protective conductor as part of the current path
of the circuit
3.3
commercial or industrial premises
all premises other than residential premises
3.4
differential-mode signalling
form of signalling between two or more power conductors not requiring use of the protective
conductor
3.5
fixed mains network
permanently installed system of wires or cables comprising the mains network but excluding
flexible cables that can be connected or disconnected by the user
3.6
residential
premises which are normally used as homes for persons
3.7
sensitive equipment
equipment which is likely to be adversely affected by disturbances and may result in harm
3.8
signal/signalling
encoded message, that is, the sequence of digital or analogue states in a communication that
is a message
3.9
user
person who uses a system without the complete technical expertise required to fully
understand the system

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4 Frequency bands and classifications

4.1 General

In order to provide coexistence between different applications and to prevent mutual interference, this
standard designates frequency bands for well-established application types.

NOTE 1 Early drafts of this standard, based upon existing industry documents and an existing national standard,
used the terms A-band, B-band, C-band and D-band to designate the frequency bands 3 kHz to 95 kHz, 95 kHz to125 kHz,
125 kHz to 140 kHz and 140 kHz to 148,5 kHz respectively. Although these designations are not used in this standard they
remain widely used in industry for convenience. Where such designations are used they should be interpreted as above.

NOTE 2 Additional provisions may apply in the event of interference to radio services.

4.2 Band 3 kHz up to 95 kHz

Frequencies in this band shall only be used for applications for monitoring or controlling the low-voltage
distribution network, including energy usage of connected equipment and premises.

NOTE A typical example of an application in this band would be metering communications.

4.3 Band above 95 kHz up to 148,5 kHz

4.3.1 General

Frequencies in this band shall only be used for:

a) Analogue and digital applications within homes, commercial or industrial premises;

b) Control and monitoring of equipment installed on or connected to the low-voltage distribution
network external to premises.

NOTE 1 Typical examples of b) would be street lighting control or electric vehicle charging.

NOTE 2 This standard conveys no rights to any user to communicate over any part of the electricity network owned
by another party.

Equipment for use in this frequency band is designated as either Class 122 or as Class 134
equipment. Class 122 equipment is suitable for general use, but the use of Class 134 equipment shall
only be used in the industrial environment and should not be used in locations where interference
might be caused to sensitive equipment. .

NOTE 3 The use of Class 134 may require prior notification, or consent of appropriate authorities.

Equipment manufactured to Class 116 of EN 50065-1:1991 will now meet the requirements of
Class 122 and may be marked Class 116 provided that its output complies with EN 50065-1:1991.

4.3.2 Sub-band above 95 kHz up to 125 kHz

The use of this sub-band does not require an access protocol.

4.3.3 Sub-band above 125 kHz up to 140 kHz

Signalling in this sub-band requires the use of the access protocol described in Clause 5.

4.3.4 Sub-band above 140 kHz up to 148,5 kHz

The use of this sub-band does not require an access protocol.

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SIST EN 50065-1:2011
EN 50065-1:2011 - 8 -
5 Access protocol

5.1 Access Protocol Overview

A carrier-sense multiple-access (CSMA) protocol is used in the frequency sub-band 125 kHz to
140 kHz to allow several systems to operate on the same, or electrically connected, mains networks.
These systems may use the same or different communication protocols but shall use the access
protocol given in this clause.

Signals transmitted by systems operating in this sub-band are required to have a defined spectral
distribution and maximum duration such that their carrier may be detected by other devices on that
network. The presence of this characteristic signal on the network above a minimum level indicates
that the frequency sub-band is being used. This state is termed “band-in-use”. Devices with pending
transmissions may not transmit whilst the band is in use and until the band has been free for a
minimum period.

To provide multiple access, devices with pending transmissions are required to randomise their
transmission attempts over a time interval to reduce the possibility of collisions between two or more
transmissions. The most recent device to transmit is required to wait until the end of that time interval
before attempting a further transmission to prevent it taking too great a share of the available
transmission capacity. The maximum length of any transmission is limited for the same reason.

5.2 Band in use signalling

All devices shall use the frequency 132,5 kHz to indicate that a transmission is in progress.

To enable band-in-use to be detected, a device shall transmit its signal with a spectral distribution in
accordance with Annex B.

5.3 Band in use condition

Every device capable of transmitting shall be equipped with a signal detector which shall indicate when
the sub-band is in use. Band-in-use is the condition when any signal of at least 86 dB(µV) rms is
present anywhere in the frequency range 131,5 kHz to 133,5 kHz for at least 4 ms. This shall be
measured at the device’s main input terminations and across the conductors used by the device’s own
transmitter. The frequency range of detection of a signal shall be tested as described in Annex A.

The band-in-use indication may be considered false if the output from the signal detector is present
without any interruption greater than 80 ms for a continuous period of at least 1,1 s immediately prior to
each transmission. For a transmitter or a group of transmitters the measurement of this 1,1 s interval
shall recommence after the end of transmission by that transmitter or group of transmitter. Any gap in
the band-in-use indication greater than 80 ms shall reset the false band-in-use condition.

NOTE The measurement point referred to in the above subclause differs from that described in EN 55016-1-2.

5.4 Allowed use of the sub-band

A transmission is considered as a series of signals in which there is no gap greater than 80 ms without
signal transmission. A group of transmitters is a number of devices, using the same protocol and co-
ordinating their actions so as to meet these requirements e.g. a demand-acknowledge-answer
sequence.

No transmitter or group of transmitters shall transmit continuously for a period exceeding 1 s. After
each transmission a transmitter or a group of transmitters shall not transmit again for at least 125 ms.

The requirements of 5.4 and 5.5 shall be met either by each transmitter individually or, at the
equipment supplier’s option, by a group of transmitters. In the second case, the access protocol allows
a sequence of transmission, repetition and answer-back signals to occupy the sub-band for the
maximum time otherwise permitted for a single message.

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5.5 Access rule

Every device capable of transmitting shall only transmit if its band-in-use detector has shown that the
sub-band has not been in use (as defined in 5.3) for a continuous period, randomly chosen on each
occasion and uniformly distributed between 85 ms and 115 ms with at least seven possible values in
that range.


6 Transmitter output voltage

6.1 General

6.1.1 Introduction

To avoid damage to the device(s) under test or to the test equipment, care shall be taken to ensure
that the supply voltage applied to the device(s) under test is within the manufacturer’s declared supply
voltage range.

NOTE This is especially important in the case of three-phase devices operating without neutral connection where
supply voltages may differ from those normally expected.

Differential-mode signalling shall generally be used. Common-mode signalling over the fixed mains
network shall only be used in commercial or industrial premises under conditions described in Clause9.

Common-mode signalling is allowed over a flexible cable provided that the transmission of common-
mode signals from the fixed plug onto the fixed mains network is below the out-of-band disturbance
limits in Clause 7.

6.1.2 Measuring circuit for single-phase devices

For any measuring method the output voltage in the frequency range 9 kHz up to 150 kHz shall be
measured using a single phase artificial mains network conforming to 4.2 of EN 55016-1-2:2004.

NOTE Attention is drawn to the note to 4.2 of EN 55016-1-2:2004.

For the sub-band 3 kHz to 9 kHz an artificial network conforming to the impedance characteristic of
Figure 2 of this standard shall be used.

6.1.3 Measuring circuit for three-phase devices

For any measuring method the output voltage in the frequency range 9 kHz up to 150 kHz shall be
measured using a three-phase artificial mains network conforming to 4.2 of EN 55016-1-2:2004.

NOTE 1 The note to 6.1.2 also applies.

For the sub-band 3 kHz to 9 kHz an artificial network conforming to the impedance characteristic of
Figure 2 shall be used.

Where the equipment supplier’s instructions indicate that the three-phase device can also be used as a
single-phase device by connecting all phase terminals to the same phase, the device shall also be
tested as a single-phase device. This is because the device performance may change as the loading
conditions vary between three-phase and single-phase use.

NOTE 2 Measurements are prescribed in differing manners for three-phase devices which transmit on three phases
simultaneously and for three-phase devices which transmit on only a single phase at any one time, even if they may transmit
on two or more phases in sequence.

NOTE 3 The use of the three-phase network for testing three-phase devices that transmit between neutral and three
phases simultaneously changes the relationship between measurements made on the phases and measurements made on the
neutral when compared with practical applications. When using the three-phase network, the value measured on the neutral is
increased by approximately 3,5 dB (µV) and those measured on the phase are decreased by 6 dB (µV). The limit values given
in 6.3.2, and which apply to the measured values, include corrections for these changes. No correction is required for three-
phase devices transmitting only between phases without connection to the neutral.

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EN 50065-1:2011 - 10 -

6.2 Output signal measurement

6.2.1 Determination of bandwidth

The output signal spectrum is determined by the use of a spectrum analyser having a peak detector
and a 100 Hz bandwidth.

The transmitter shall operate in such a way that the bandwidth and output signal magnitude have the
greatest values permitted by the manufacturer’s specification.

The spectral width (B in Hertz) is defined by the length of the interval where all the frequency lines are
less than 20 dB below the maximum spectral line (see Figure 1).

s, f
Spectral bandwidth B, Hz
f

Figure 1 ― Measurement of spectral bandwidth

6.2.2 Determination of output level

The output level is measured over a period of 1 min using a peak detector. This measurement may be
made by a spectrum analyser with a pass-band equal to or greater than the spectral bandwidth B of the
transmitter output.

For single-phase devices, measurement shall be made on either the phase or neutral connection.

For three-phase devices that transmit on only a single phase, measurements shall be made on that
phase and on the neutral connection.

For three-phase devices that transmit on all three phases simultaneously, measurements shall be
made in all three phases. No measurement is required on the neutral conductor.

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6.3 Maximum output levels

6.3.1 Single-phase Devices

6.3.1.1 Sub-band 3 kHz up to 9 kHz

5
Equivalent circuit
50 Ω // 50 µH + 1,6 Ω
4
50 µH
|z|
50 Ω
3
1.6 Ω
2
Tolerance on
curve is ± 20%
1
0
34 5 6 78910
Frequency (kHz)


Figure 2 ― Idealized equivalent circuit model − DUT port impedance


Measurements shall be made as defined in 6.2.2.

For the sub-band 3 kHz up to 9 kHz the artificial mains network 50 Ω//50 µH + 1,6 Ω shall be used. The
idealised impedance curve is shown in Figure 2 and a practical implementation of the curve, including
isolation from the supply, is shown in Figure 3.

NOTE This artificial network forms half of what is commonly known as a V-Network.

25250 0 µµHH 5050 µµHH
DD
P/P/NN
DeDevviiccee
UnUndederr
TeTesstt
C1C1
4040 µµF6F600 µµFF 0,40,477 µµFF
MM MMeeasasuurrememeenntt
MaiMainnss
5050ΩΩ
pphashase/e/
nneuteutrraall
33ΩΩ 1010kkΩΩ
1,51,5ΩΩ
GG
NNeettwwoorrkk to topopollogyogy as as EENN 5 55015016-6-1-1-2:2:22004004,, F Fiigurgure 4e 4
VVaalluesues app apprrooprpriiaattee f foorr 3 t 3 too 9 k 9 kHHzz s suubb--bbaanndd


Figure 3 ― Artificial mains network 3 kHz to 9 kHz

Modulus Impedance (Ohms)  |Z|

---------------------- Page: 13 ----------------------

SIST EN 50065-1:2011
EN 50065-1:2011 - 12 -

P/N
D
M
Mains AMN1
50 ΩΩΩΩ
supply Device

Under
G
Phase/
Test
Neutral
P/N
D
M
AMN2
50 ΩΩΩΩ
G
AMN1 and AMN2 artificial mains networks
for the appropriate frequency band
(see figures 3 and 5)


Figure 4 ― Measurement of output level (single phase)

With the device connected as shown in Figure 4 the output level measured on either network shall not
exceed 134 dB(µV) with respect to earth.

6.3.1.2 Sub-band above 9 kHz up to 95 kHz

The signal shall be considered as a narrow-band signal if its bandwidth is less than 5 kHz and as a
wide-band signal if the bandwidth is equal to or greater than 5 kHz. The signal bandwidth shall be
measured by the method given in 6.2.1.

For output level measurements as given under a) and b) below, an artificial network having the
impedance versus frequency characteristic according to Figure 1a of EN 55016-1-2:2004 as referred to
in 4.2 shall be used. This curve is shown by the broken line in Figure 5, which also gives an example of
a suitable circuit. The continuous curve in Figure 5 shows the frequency characteristic for the example
network.

NOTE 1 EN 55016-1
...