SIST EN 50065-1:2003
(Main)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
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
Superseded by EN 50065-1:2011
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
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
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 oskrbnem sistemu oziroma znotraj napeljav v prostorih potrošnikov. Določa frekvenčne pasove, razporejene za različne aplikacije, meje za končne izhodne napetosti v delovnem pasu in meje za izvedene in radijske motnje. Prav tako podaja metode meritev. Ne določa metod modulacij signala in metod kodiranja niti funkcionalnih lastnosti (razen tistih za preprečevanje medsebojne motnje). Predmet standarda je omejevanje medsebojnega vpliva med opremo za oddajanje signala 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 neodvisnost od takih motenj ne more biti zagotovljena.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 50065-1:2003
01-februar-2003
1DGRPHãþD
SIST EN 50065-1:1997
SIST EN 50065-1:1997/A1:1997
SIST EN 50065-1:1997/A2:1998
SIST EN 50065-1:1997/A3:1998
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
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 50065-1:2001
ICS:
33.040.30 Komutacijski in signalizacijski Switching and signalling
sistem systems
33.100.01 Elektromagnetna združljivost Electromagnetic compatibility
na splošno in general
SIST EN 50065-1:2003 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
SIST EN 50065-1:2003
---------------------- Page: 2 ----------------------
SIST EN 50065-1:2003
EUROPEAN STANDARD EN 50065-1
NORME EUROPÉENNE
EUROPÄISCHE NORM July 2001
ICS 33.040.30 Supersedes EN 50065-1:1991 + A1:1992 + A2:1995 + A3:1996
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 Teil 1: Allgemeine Anforderungen,
de fréquences et perturbations Frequenzbänder und elektromagnetische
électromagnétiques Störungen
This European Standard was approved by CENELEC on 2000-08-01. 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, Czech Republic,
Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway,
Portugal, Spain, Sweden, Switzerland and United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2001 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50065-1:2001 E
---------------------- Page: 3 ----------------------
SIST EN 50065-1:2003
EN 50065-1:2001 - 2 -
Foreword
This standard has been prepared by the CENELEC technical subcommittee SC 205A, Mains
communication systems, of Technical Committee CENELEC TC 205, Home and Building Electronic
Systems (HBES) following the quinquennial review of EN 50065-1:1991 with the incorporation of
amendments A1:1992, A2:1995 and A3:1996.
The text of the draft was submitted to the Unique Acceptance Procedure and was approved by
CENELEC as EN 50065-1 on 2000-08-01.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2002-02-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2003-04-01
Annexes designated "normative" are part of the body of the standard.
Annexes designated "informative" are given for information only.
In this standard, annexes A, B, C, D and E are normative and annex F is informative.
Modifications have been made to clause 5 to take account of false band-in-use detection.
Common-mode signalling in the 3 – 9 kHz sub-band has been deleted. Additions have also been
made to clause 6 in order to take account of three-phase signalling and an extra test for two
transmitters operating simultaneously has been added in subclause 8.5. Sub-divisions of the utility
and consumer bands are now referred to as sub-bands.
SC 205A has taken the advice of CENELEC BT regarding the conflict arising from the publication of
EN 55015:1996 and has therefore increased the threshold and lower transmit level for the consumer
band by +6 dB(μV).
References have been updated to include CISPR 16-1 and CISPR 16-2. Other changes have been
made to add clarity and bring the figures up to date.
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
__________
---------------------- Page: 4 ----------------------
SIST EN 50065-1:2003
- 3 - EN 50065-1:2001
Contents
Page
1 Scope.5
2 Normative references .5
3 Definitions .5
4 Frequency bands .5
5 Access protocol .7
6 Transmitter output voltage.8
7 Disturbance limits .14
8 Test conditions .16
9 Inadvertent operation.17
Annexes
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 .18
B (normative) Method of measurement of the spectral distribution of a transmitting device’s
signal in the frequency range 125 kHz to 140 kHz.19
C (normative) Methods of measurement (9 kHz to 30 MHz).20
D (normative) Methods of measurement of disturbance power (30 MHz to 1GHz).21
E (normative) Attenuation characteristics of measuring instrument above 150 kHz.23
F (informative)Design for a single artificial network intended to show the performance of a
signalling system .24
---------------------- Page: 5 ----------------------
SIST EN 50065-1:2003
EN 50065-1:2001 - 4 -
Figures Page
Figure 1 Measurement of spectral bandwidth . 8
Figure 2 Idealized equivalent circuit model - DUT port impedance . 9
Figure 3 Example of artificial mains network 3 kHz - 9 kHz . 9
Figure 4 Measurement of output level (single phase).10
Figure 5 Example of artificial mains network 9 kHz - 95 kHz and 95 - 148,5 kHz.11
Figure 6 Measurement of output level in of 3-phase devices transmitting simultaneously
on all phases .12
Figure 7 Voltage limits for spurious outputs in other bands .15
Figure 8 Measuring arrangement for equipment the operation of which is dependent on
the transmitter being in circuit (single phase).17
Figure A.1 Measuring arrangements for testing the frequency range of the signal detector .18
Figure F.1a The adaptive network for the frequency range 3kHz - 148,5 kHz .24
Figure F.1b The adaptive network connection with the CISPR 16-1 network.24
Figure F.2 The nominal CISPR 16-1 impedance (doubled) and the calculated impedance b
etween points A and B (Figure F.1b) when the adaptive network is added to the
CISPR 16-1 network.25
Tables
Table 1 Summary of maximum transmission levels .13
Table 2 Limits of mains terminal disturbance voltage in the frequency range
0,15 MHz to 30 MHz.14
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.15
Table 4 Limits of disturbance power .16
Table B.1 Values of H .19
i
Table E.1 Attenuation of measuring instrument above 150 kHz .23
---------------------- Page: 6 ----------------------
SIST EN 50065-1:2003
- 5 - EN 50065-1:2001
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 supply system 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 signal modulation methods nor the coding methods nor functional features
(except those for the prevention of mutual interference).
Environmental requirements and tests are not included.
NOTE In most countries the transmission of information is subject to regulation. 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
supply system where this would not otherwise be allowed.
The object of the standard is to limit mutual influence between signal 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.
2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of any
of these publications apply to this European Standard only when incorporated in it by amendment or
revision. For undated references the latest edition of the publication referred to applies (including
amendments).
IEC 60050-161 International electrotechnical vocabulary –
Chapter 161:Electromagnetic compatibility
CISPR 16-1 1993 Specification for radio disturbance and immunity measuring apparatus
and methods – Part 1: Radio disturbance and immunity measuring
apparatus
CISPR 16-2 1996 Specification for radio disturbance and immunity measuring apparatus
and methods – Part 2: Methods of measurement of disturbances and
immunity
3 Definitions
The definitions in Chapter 161 of the International Electrotechnical Vocabulary apply.
4 Frequency bands and classifications
NOTE Additional provisions may apply in the event of interference to radio communication service.
4.1 Band 3 kHz up to 95 kHz
The use of frequencies in this band shall be restricted to electricity suppliers and their licensees.
---------------------- Page: 7 ----------------------
SIST EN 50065-1:2003
EN 50065-1:2001 - 6 -
4.2 Band above 95 kHz up to 148,5 kHz
The use of frequencies in this band shall be restricted to consumer use.
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 may
require prior notification, or consent of, appropriate authorities.
Equipment manufactured to Class 116 of the previous edition of this standard will now meet the
requirements of Class 122 and may be marked Class 116 provided that its output complies with the
previous standard.
4.2.1 Sub-band above 95 kHz up to 125 kHz
The use of this sub-band does not require an access protocol.
4.2.2 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.
4.2.3 Sub-band above 140 kHz up to 148,5 kHz
The use of this sub-band does not require an access protocol.
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.
---------------------- Page: 8 ----------------------
SIST EN 50065-1:2003
- 7 - EN 50065-1:2001
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 CISPR 16-1:1993.
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 subclauses 5.4 and 5.5 shall be met either by each transmitter individually or, at
the suppliers 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.
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 subclause 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
Common-mode injection shall not be used unless otherwise explicitly allowed in local regulations (see
also clause 9).
6.1.1 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 subclause 11.2 of
CISPR 16-1:1993.
For the sub-band 3 - 9 kHz an artificial network conforming to the impedance characteristic of
Figure 2 of this standard shall be used.
6.1.2 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 subclause 11.2 of
CISPR 16-1:1993.
---------------------- Page: 9 ----------------------
SIST EN 50065-1:2003
EN 50065-1:2001 - 8 -
For the sub-band 3 - 9 kHz an artificial network conforming to the impedance characteristic of
Figure 2 of this standard shall be used.
Where the 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 1 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 2 The use of the three-phase network for testing three-phase devices that transmit on 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) amount. The limit values given in subclause 6.3.2, and which apply to the
measured values, include corrections for these changes.
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 Hz) 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 minute 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.
---------------------- Page: 10 ----------------------
SIST EN 50065-1:2003
- 9 - EN 50065-1:2001
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.
μ
μ
250 H 50 H
D
P/N
Device
Under
Test
C1
μ μ μ
40F60 F 0,47 F
M Measurement
Mains
Ω
50
phase/
neutral
Ω Ω
Ω
3 10k
1,5
G
Network topology as CISPR 16-1:1993 figure 23
Values appropriate for 3 to 9 kHz sub-band
Figure 3 - Artificial mains network 3 kHz - 9 kHz
Modulus Impedance (Ohms) |Z|
---------------------- Page: 11 ----------------------
SIST EN 50065-1:2003
EN 50065-1:2001 - 10 -
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 clause 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 CISPR 16-1:1993, Figure 7a 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 CISPR 16-1:1993 gives an example circuit in Figure 23 with component values listed in annex F, but recommends
compensation of the readings for frequencies in the 9 to 150 kHz band. Alternative values of capacitor C1 (Figure 23,
CISPR 16-1:1993) are shown in Figure 5 appropriate to frequency ranges 9 to 95 kHz and 95 to 148,5 kHz.
NOTE 2 Artificial networks conforming to CISPR 16-1:1993, Figure 7a are available commercially, but circuit implementations may
differ in detail from the example in Figure 5. Care should be taken that the implementation is appropriate to the measurement
frequency.
NOTE 3 This artificial network forms half of what is commonly known as a V-Network.
---------------------- Page: 12 ----------------------
SIST EN 50065-1:2003
- 11 - EN 50065-1:2001
μ
250 H μ
50 H
Device
D
P/N
Under
Test
μ
0,25 F
μ or
μ C1
4 F 8 F
Measurement
μ
3,3 F
M
Mains
Ω
50
phase/
neutral
Ω
Ω Ω
10 5 1 k
G
Network topology as CISPR 16-1:1993 figure 23
μ
C1 = 3,3 F for 9 to 95 kHz
50
μ
C1 = 0,25 F for 95 to 148,5 kHz
Ω
50 Parallel
Ω μ
(5 + 50 H)
40
30
Impedance error < 10%
20
ExamExamplple Ne Neettwwororkk
Measurement error < 10%
50 Hz voltage at the measuring point 11,9 V Example Network
10
0
1 kHz 10 kHz 100 kHz 1 MHz
Figure 5 - Example of artificial network 9 - 95 kHz and 95 - 148,5 kHz
a) Narrow band signal:
μV) at 9 kHz decreasing linearly with the
The measured level shall not exceed 134 dB (
logarithm of frequency to 120 dB (μV) at 95 kHz.
b) Wide band signals:
μV).
The measured level shall not exceed 134 dB (
In addition, when measured with a peak detector with 200 Hz bandwidth, no part of the spectrum of
the signal shall exceed 120 dB (μV).
6.3.1.3 Band above 95 kHz up to 148,5 kHz
The output level measured by the method of subclause 6.2.2 shall be limited according to the use of
the equipment as follows:
Class 122 equipment:
The output level measured according to clause 6.2.2 shall not exceed 122 dB (μV).
Class 134 equipment:
The output level measured according to clause 6.2.2 shall not exceed 134 dB (μV).
---------------------- Page: 13 ----------------------
SIST EN 50065-1:2003
EN 50065-1:2001 - 12 -
6.3.2 Three-phase devices transmitting simultaneously on all phases
6.3.2.1 Sub-band 3 kHz up to 9 kHz
D
Phase 1 P/N
M
AMN1
50 Ω
G
Phase 2 D
P/N
M
AMN2
50 Ω
Mains
G
supply
Device
Under
Test
Phase 3 D
P/N
M
AMN3
50 Ω
G
D
Neutral P/N
M
AMN4
50 Ω AMN1 to AMN4 are artificial mains networks
for the appropriate frequency band
G
(see figures 3 and 5)
Figure 6 - Measurement of output level of 3-phase devices transmitting
simultaneously on all phases
Measurements shall be made as defined in 6.2.2.
For the sub-band 3 kHz up to 9 kHz a network of 50 Ω//50 μH + 1,6 Ω shall be used. The idealised
impedance curve is shown in Figure 2 and a practical realisation of the curve including isolation from
the supply is shown in Figure 3.
With the device connected as shown in Figure 6 the output level measurement at any phase shall not
exceed 128 dB (μV) with respect to earth.
6.3.2.2 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 band width 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 CISPR 16-1:1993, Figure 7a shall be used.
This curve is shown by the broken line in Figure 5, which also gives an example of a suitable circuit.
---------------------- Page: 14 ----------------------
SIST EN 50065-1:2003
- 13 - EN 50065-1:2001
a) Narrow-band signal:
The measured level on any phase shall not exceed 128 dB (μV) at 9 kHz decreasing linearly
with the logarithm of frequency to 114 dB (μV) at 95 kHz.
b) Wide-band signals:
The measured level shall not exceed 128 dB (μV) when measured on any phase.
NOTE See Note 2 to subclause 6.1.2.
In addition, when measured with a peak detector with 200 Hz bandwidth, no part of the spectrum of
the signal on any phase shall exceed 114 dB (μV).
6.3.2.3 Band above 95 kHz up to 148,5 kHz
The output level measured by the method of subclause 6.2.2 shall be limited according to the use of
the equipment as follows:
Class 122 equipment:
The output level measured in any phase, according to subclause 6.2.2, shall not exceed 116 dB (μV).
Class 134 equipment:
The output level measured in any phase, according to subclause 6.2.2, shall not exceed 128 dB (μV).
NOTE: See Note 2 to subclause 6.1.2.
6.3.3 Three-phase devices transmitting on a single phase
Measurements shall be made in both the phase and neutral connections. T
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.