SIST-TS CLC/TS 50659:2023
(Main)Electromagnetic characteristics of linear cable management systems (CMS)
Electromagnetic characteristics of linear cable management systems (CMS)
This document provides test methods for the measurement of the following electromagnetic characteristics of lengthwise cable management systems like conduit systems according to EN 61386 series, cable trunking systems and cable ducting systems (CTS/CDS) according to EN 50085 series and cable tray and cable ladder systems according to EN 61537:
- shielding effectiveness of magnetic field,
- transfer impedance.
This document also provides guidance on how these characteristics can be declared and may be used.
Elektromagnetische Eigenschaften von linearen Kabelführungssystemen
Caractéristiques électromagnétiques des systèmes linéaires de câblage
Elektromagnetne karakteristike linearnega sistema za urejanje okablenja (CMS)
Ta dokument določa preskusne metode za merjenje naslednjih elektromagnetnih karakteristik vzdolžnih sistemov za urejanje okablenja, kot so sistemi kanalov v skladu s skupino standardov EN 61386, sistemi kabelskih korit in sistemi kabelskih cevi (CTS/CDS) v skladu s skupino standardov EN 50085 ter sistemi polic in lestvic v skladu s standardom EN 61537:
– zaščitna učinkovitost magnetnega polja;
– prehodna impedanca.
Ta dokument vsebuje tudi smernice za navajanje in uporabo teh karakteristik.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST-TS CLC/TS 50659:2023
01-februar-2023
Nadomešča:
SIST-TP CLC/TR 50659:2017
Elektromagnetne karakteristike linearnega sistema za urejanje okablenja (CMS)
Electromagnetic characteristics of linear cable management systems (CMS)
Elektromagnetische Eigenschaften von linearen Kabelführungssystemen
Caractéristiques électromagnétiques des systèmes linéaires de câblage
Ta slovenski standard je istoveten z: CLC/TS 50659:2022
ICS:
29.120.10 Inštalacijske cevi za Conduits for electrical
električne namene purposes
SIST-TS CLC/TS 50659:2023 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST-TS CLC/TS 50659:2023
TECHNICAL SPECIFICATION CLC/TS 50659
SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION December 2022
ICS 29.120.10 Supersedes CLC/TR 50659:2017
English Version
Electromagnetic characteristics of linear cable management
systems (CMS)
Caractéristiques électromagnétiques des systèmes Elektromagnetische Eigenschaften von linearen
linéaires de câblage Kabelführungssystemen
This Technical Specification was approved by CENELEC on 2022-11-21.
CENELEC members are required to announce the existence of this TS in the same way as for an EN and to make the TS available promptly
at national level in an appropriate form. It is permissible to keep conflicting national standards in force.
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.
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
© 2022 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. CLC/TS 50659:2022 E
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Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Shielding effectiveness of magnetic field . 6
5 Transfer impedance . 16
Annex A (informative) Example of calculation of the reduction of distance required between
parallel power cables and signal cables provided by a cable management system . 24
Bibliography . 27
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European foreword
This document (CLC/TS 50659:2022) has been prepared by CLC/TC 213, “Cable management
systems”.
This document supersedes CLC/TR 50659:2017.
This is a European Technical Specification for cable management products used for electro-technical
purposes. It relates to the Council Directives on the approximation of laws, regulations and
administrative provisions of the Member States relating to Low Voltage Directive 2014/35/EU through
consideration of the essential requirements of this Directive.
This document is supported by separate standards to which references are made.
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.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
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1 Scope
This document provides test methods for the measurement of the following electromagnetic
characteristics of lengthwise cable management systems like conduit systems according to the
EN 61386 series, cable trunking systems and cable ducting systems (CTS/CDS) according to the
EN 50085 series and cable tray and cable ladder systems according to EN 61537:
— shielding effectiveness of magnetic field,
— transfer impedance.
This document also provides guidance on how these characteristics can be declared and may be used.
Powertrack systems covered by the EN 61534 series are not covered by this edition of the document
and can be considered in a new edition.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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.
EN 61000-4-5, Electromagnetic compatibility (EMC) - Part 4-5: Testing and measurement techniques -
Surge immunity test (IEC 61000-4-5)
EN 61000-5-7, Electromagnetic compatibility (EMC) - Part 5-7: Installation and mitigation guidelines -
Degrees of protection by enclosures against electromagnetic disturbances (EM code)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/.
3.1
shielding effectiveness
SE
ability of a cable management system to attenuate an electromagnetic signal as it enters or exits the
CMS, quantified as the ratio of a signal received (from a transmitter) without the shield, to the signal
received with the shield in place
3.2
magnetic field
constituent of an electromagnetic field which is characterized by the magnetic field strength H together
with the magnetic flux density B
Note 1 to entry: In French, the term “champ magnétique” is also used for the quantity magnetic field strength.
[SOURCE: IEV 121-11-69]
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3.3
signal to noise ratio
SNR
ratio in dB between the measured peak current I1,max in the current loop when the current probe is
connected to the current loop and the measured peak current I when the current probe is not
N,max
connected to the current loop but in a narrow position of the current loop. Both peak currents measured
at the same excitation current in the excitation winding
I
1,max
SNR (dB) 20×log
I
N,max
Note 1 to entry: I1,max and IN,max show their maxima at different time.
3.4
electromagnetic shielding coding
coding system to indicate the degree of protection provided by a CMS against the passage of
electromagnetic energy
3.5
CMS transfer impedance
Z
CMS
ratio of a voltage drop, between two specified points, caused by a disturbing current flowing through the
cable management system and the disturbing current
Note 1 to entry: This voltage drop is a combination of
— the voltage drop along this cable management system due to the current flowing through this cable
management system and
— the voltage drop along a conductor contained in this cable management system due to the magnetic field
arising from the current flowing through this cable management system.
3.6
virtual CMS transfer impedance
Z
v CMS
CMS transfer impedance defined by the ratio of the maximum asymmetrical mode voltage and the
maximum disturbing current during a time domain pulse
3.7
common mode voltage
asymmetrical voltage
V
AS
mean of the phasor voltages appearing between each conductor and a specified reference, usually
earth or frame
[SOURCE: IEV 161-04-09, modified]
3.8
shielded enclosure
screened room
mesh or sheet metallic housing designed expressly for the purpose of separating electromagnetically
the internal and the external environment
[SOURCE: IEV 161-04-37]
5
=
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4 Shielding effectiveness of magnetic field
4.1 Introduction
This document defines the test method for the determination of shielding effectiveness of magnetic field
(SE) for lengthwise cable management systems (CMS).
The efficiency of a shielding is quantified by its shielding effectiveness (SE). The shielding effectiveness
(SE) in this document is only intended for magnetic fields.
As an activating source a 8/20 µs impulses current shall be used.
The electrical field shielding effectiveness (SE) of metallic cable management systems is not covered by
this document.
While a screen is a technical provision, the shielding effectiveness shows the performance of this
screen with regard to Electromagnetic Compatibility (EMC) and Electromagnetic Interference (EMI).
4.2 Declaration
4.2.1 General
The shielding effectiveness of magnetic field shall be declared using the electromagnetic shielding
coding described in 4.2.2 and the additional rules described in 4.2.3.
4.2.2 Electromagnetic shielding coding
The electromagnetic shielding coding consists of “EM” followed by five positions according to Table 1.
Table 1 — Electromagnetic shielding coding
Second Fourth
CMS Type EM First position Third position Fifth position
position position
Cable tray A letter A number being A number being A number being A number being
EM
and cable representing the test result the test result the test result the test result
ladder the frequency for CMS with for CMS without for CMS with for CMS without
systems band as cover running in cover running in cover running in cover running in
shown in a plane parallel a plane parallel a plane a plane
Table 2 to the plane of to the plane of perpendicular to perpendicular to
the excitation the excitation the plane of the the plane of the
winding winding excitation excitation
winding winding
(Figure 2a) (Figure 2b)
(Figure 2c) (Figure 2d)
Cable EM A letter A number being NA A number being NA
trunking representing the test result the test result
systems the frequency for CMS with for CMS with
band as cover running in cover running in
shown in a plane parallel a plane
Table 2 to the plane of perpendicular to
the excitation the plane of the
winding excitation
(Figure 2a) winding
(Figure 2c)
Cable A letter A number being A number being NA
EM NA
ducting representing the test result the test result
the frequency for CMS with for CMS with
systems
band as the larger the larger
shown in dimension dimension
Table 2 running in a running in a
plane parallel to plane
the plane of the perpendicular to
excitation the plane of the
winding excitation
winding
(Figure 2a)
(Figure 2c)
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Second Fourth
CMS Type EM First position Third position Fifth position
position position
Conduit EM A letter A number being NA A number being NA
representing the test result the test result
systems
the frequency for CMS running for CMS running
band as in the plane of in the plane of
shown in the excitation the excitation
winding winding
Table 2
(Figure 2a) (Figure 2c)
NOTE “NA” means “not applicable”.
Table 2 — Frequency band code
Frequency band Frequency band code
10 kHz - 100 kHz A
100 kHz - 1 MHz B
The test method currently using 8/20 µs impulses current included in this document only allows
declaration for frequency band 10 kHz – 100 kHz (Frequency band code A).
4.2.3 Additional rules
The declared shielding effectiveness shall be the measured shielding effectiveness in dB rounded to the
closest integer, always using two digits.
EXAMPLES 17,49 dB will be 17 and 17,5 dB will be 18. 9,2 dB will be 09.
When shielding effectiveness can be declared, “XX” means not declared.
4.2.4 Example of declaration
Declaring for a cable tray system “EM A-37-20-09-XX” for shielding effectiveness of magnetic field
means, for a frequency band of 10 kHz - 100 kHz,
— a shielding effectiveness of 37 dB for CMS with cover running in a plane parallel to the plane of the
excitation winding
— a shielding effectiveness of 20 dB for CMS without cover running in a plane parallel to the plane of
the excitation winding
— a shielding effectiveness of 9 dB for CMS with cover running in a plane perpendicular to the plane
of the excitation winding
— a shielding effectiveness not declared for CMS without cover running in a plane perpendicular to
the plane of the excitation winding
Declaring for a cable trunking system “EM A-37-NA-09-NA” for shielding effectiveness of magnetic field
means, for a frequency band of 10 kHz - 100 kHz,
— a shielding effectiveness of 37 dB for CMS with cover running in a plane parallel to the plane of the
excitation winding
— a shielding effectiveness of 9 dB for CMS with cover running in a plane perpendicular to the plane
of the excitation winding
Declaring for a conduit system “EM A-70-NA-70-NA” for shielding effectiveness of magnetic field
means, for a frequency band of 10 kHz - 100 kHz,
— a shielding effectiveness of 70 dB for CMS running in the plane of the excitation winding.
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4.3 Test arrangement
4.3.1 General
The test arrangement is shown in Figure 1, a) to c).
a) Test arrangement without CMS
b) Test arrangement for CMS without cover
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c) Test arrangement for CMS with cover
Key
1 table without any conductive part
2 excitation winding
3 plastic fixings
4 samples each (1000 ± 3) mm
5 junction
6 terminating fitting
7 terminating fitting with central opening of up to approximately 50 mm x 50 mm
8 current loop
9 current probe
surge current generator
10
11 oscilloscope
12 current probe excitation winding
13 shielding cabinet
14 cover (500 ± 3) mm
15 cover (1500 ± 3) mm
D1 gap between excitation winding and sample (30 ± 3) mm
D2 gap between current loop and terminating fitting if any or extremity of the sample (150 ± 5) mm on both sides
D3 width of the sample measured in the plane of the excitation winding
Figure 1 — Test arrangement for the measurement of shielding effectiveness of magnetic field
The excitation winding is spaced at least 800 mm from any conductive part in any direction except on
the feeding side.
4.3.2 Table
The test arrangement is placed on a table made of non-conductive material (example: wood). The table
shall be sufficiently stable to carry safely all the components before and while testing. To avoid
measurement errors, the table shall not have any conductive part and its height shall be at least
800 mm.
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4.3.3 Sample
The sample consists of two lengths of the cable management system of (1000 ± 3) mm length and a
system component for their junction, if any (coupler). Both ends of the sample are closed by a
terminating fitting if it exists in the Cable Management System. In such a terminating fitting, an opening
of up to approximately 50mm x 50mm (diameter 50mm) can be made to insert a current probe and
connect the current probe to the current loop.
The sample is installed according to the manufacturer’s instructions, e.g. with the recommended
torques.
4.3.4 Excitation winding
The excitation winding consists of a copper tube having a diameter of at least 28 mm and a wall
thickness of at least 1,5 mm together with the relevant fittings or means providing appropriate junction
and connection. All parts of the excitation winding are connected in a way providing high conductivity
with means, such as, soldering, screwing, etc. allowing an effective contact on the whole circumference
of the tube. High conductivity is checked by measuring the contact resistance, with a current of at least
10 A, which shall not be higher than 10 mΩ.
NOTE The 1,5 mm minimum thickness of the wall of the copper tube is intended to provide adequate
resistance to bending of the tube during the test.
The excitation winding is fixed with non-conductive elements to avoid movement during testing.
The width of the excitation winding shall be such that the distance to the CMS is 30 mm ± 3 mm.
4.3.5 Surge current generator
The test shall be carried out with a hybrid surge current generator of 8/20 µs impulses according to
EN 61000-4-5 with 2 Ω output impedance and capable of generating a wave shape with a peak current
above 200 A.
When connected to the excitation winding, the tolerance of the shape of the current shall be:
— peak current Imax: ± 10 %
— wave front duration T1: ± 30 %
— time to half value T2: ± 20 %
— minimum peak current 200 A
NOTE The inductance of a 60 cm wide CMS and a 2 m long excitation winding can reach a value of around
8 µH.
4.3.6 Current loop
2
The current loop consists of a flexible copper conductor with a cross section of 2,5mm , fixed by a non-
metallic support preferably made of plastic or wood (see Figure 3 for an example). The centre distance
d (see Figure 3) of the copper conductors shall be 30 mm ± 1mm or 10 mm ± 1mm for smaller CMS.
Compliance with this distance can be checked by measuring the spacing between the grooves
accommodating the copper conductor in the insulated holder.
For cable management systems that cannot be opened (e.g. CDS and conduits) having an internal
diameter less than 30 mm, the distance d of the copper conductors may be reduced to 10 mm.
The current loop is fixed in the plane of the excitation winding, in the centre of the excitation winding
(±1 mm) (see Figure 2). The distance between the current loop and the terminating fitting, if any, or
extremity of the sample shall be (150 ± 5) mm (See D2 in Figure 1).
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a) For CMS with cover running in a plane parallel to the plane of the excitation winding
b) For CMS without cover running in a plane parallel to the plane of the excitation winding
c) For CMS with cover running in a plane perpendicular to the plane of the excitation winding
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d) For CMS without cover running in a plane perpendicular to the plane of the excitation winding
Key
1 current loop
2 excitation winding
3 cable tray/ladder or base of trunking
4 cover
D1 gap between excitation winding and sample (30 ± 3) mm
D3 width of the sample measured in the plane of the excitation winding
Figure 2 — Position of the current loop within the sample
Key
1 insulated holder
2 plastic screw
2
3 flexible copper conductor 2,5 mm
d distance 30 mm ± 1 mm or for small CMS 10 mm ± 1 mm
Figure 3 — Examples for arrangements of the current loop
4.3.7 Current probe
The current in the current loop is measured with a probe.
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The bandwidth of the probe shall be at least 50 MHz. The uncertainty in measurement of the scaling
factor shall be less than 3 %.
When using Hall effect probe, it is necessary to degauss the current probe at each measurement to
avoid any unwanted offset.
The lower cut off frequency shall be lower than 1 kHz and the upper cut off frequency shall be greater
than 50 MHz in order to measure the current correctly and within 3 % accuracy. This requirement
originates from the spectra of an 8/20 µs impulses current as shown in Figure 4.
Figure 4 — Spectra of a 8/20 µs impulses current
The current probe for the measurement of the loop current shall be capable of measuring small currents
of some 10 mA in the environment of the magnetic field of the excitation winding which is fed by some
100 A. Therefore, a good shielding of the current probe is recommended.
4.3.8 Shielding cabinet for the measuring equipment
It is recommended to use a steel cabinet with connected mains filter to achieve the required signal to
noise ratio SNR of at least 26 dB. It is recommended to arrange the oscilloscope and, if applicable, the
receiver of the current probe inside the shielding cabinet.
4.3.9 Oscilloscope
The bandwidth of the oscilloscope shall be at least 50 MHz. The uncertainty in measurement shall be
less than 3 %.
4.4 Test method
4.4.1 Climatic conditions
The climatic conditions in the laboratory shall be within any limits specified for the operation of the test
equipment by their respective manufacturers.
4.4.2 Conditioning/Ageing
The sample is aged as follows:
The necessity to carry out conditioning or ageing before the shielding effectiveness test is
...
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