1、Electromagnetic characteristics of linear cable management systems (CMS)PD CLC/TR 50659:2017BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06National forewordThis Published Document is the UK implementation of CLC/TR 50659:2017. The UK participation in its preparation
2、 was entrusted to TechnicalCommittee PEL/213, Cable management.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions ofa contract. Users are responsible for its correct application. T
3、he British Standards Institution 2017.Published by BSI Standards Limited 2017ISBN 978 0 580 92142 1ICS 29.120.10Compliance with a British Standard cannot confer immunity fromlegal obligations.This Published Document was published under the authority of theStandards Policy and Strategy Committee on 3
4、1 March 2017.Amendments/corrigenda issued since publicationDate Text affectedPUBLISHED DOCUMENTPD CLC/TR 50659:2017TECHNICAL REPORT RAPPORT TECHNIQUE TECHNISCHER BERICHT CLC/TR 50659 March 2017 ICS 29.120.10 English Version Electromagnetic characteristics of linear cable management systems (CMS) Rap
5、port Technique - Caractristiques lectromagntiques des systmes linaires de cblage Elektromagnetische Eigenschaften von linearen Kabelfhrungssystemen This Technical Report was approved by CENELEC on 2017-03-06. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria,
6、 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, Serbia, Slovakia, Slovenia, Spain, Sweden, Swit
7、zerland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CENELEC All rights of exploitation in
8、 any form and by any means reserved worldwide for CENELEC Members. Ref. No. CLC/TR 50659:2017 E PD CLC/TR 50659:2017CLC/TR 50659:2017 (E) 2 Contents Page European foreword 3 1 Scope 4 2 Normative references 4 3 Terms and definitions 4 4 Shielding effectiveness of magnetic field . 5 5 Transfer impeda
9、nce . 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 PD CLC/TR 50659:2017CLC/TR 50659:2017 (E) 3 European foreword This document (CLC/TR 50659:2017) has b
10、een prepared by CLC/TC 213, “Cable management systems”. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights. This Technical Report provides test metho
11、ds for the measurement of electromagnetic characteristics of linear Cable Management Systems (CMS). This is a European Technical Report for cable management products used for electro-technical purposes. It relates to the Council Directives on the approximation of laws, regulations and administrative
12、 provisions of the Member States relating to Low Voltage Directive 2014/35/EU through consideration of the essential requirements of this Directive. This European Technical Report is supported by separate standards to which references are made. PD CLC/TR 50659:2017CLC/TR 50659:2017 (E) 4 1 Scope Thi
13、s Technical Report 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 tr
14、ay and cable ladder systems according to EN 61537: shielding effectiveness of magnetic field, transfer impedance. This Technical Report also provides guidance on how these characteristics can be declared and may be used. Powertrack systems covered by EN 61534 series are not covered by this edition o
15、f the Technical Report and may be considered in a new edition. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the
16、 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
17、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. 3.1 shielding effectiveness SE ability of a cable management system to attenuate an electromagnetic si
18、gnal 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 t
19、he magnetic flux density B Note 1 to entry: In French, the term “champ magntique” is also used for the quantity magnetic field strength. SOURCE: IEV 121-11-69 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
20、 the current loop and the measured peak current IN,max when the current probe is not 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 NISNR dBI= 120,max,max( ) log Note 1 to entry: I1,max
21、and IN,max show their maxima at different time. PD CLC/TR 50659:2017CLC/TR 50659:2017 (E) 5 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 ZCMSratio of a voltage drop,
22、between two specified points, caused by a disturbing current flowing through the cable management system and the disturbing current 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 voltag
23、e 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 Zv CMSCMS transfer impedance defined by the ratio of the maximum asymmetrical mode voltage and the ma
24、ximum disturbing current during a time domain pulse 3.7 common mode voltage (or asymmetrical voltage VAS) 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 (or screened room) mesh or s
25、heet metallic housing designed expressly for the purpose of separating electromagnetically the internal and the external environment SOURCE: IEV 161-04-37 4 Shielding effectiveness of magnetic field 4.1 Introduction This Technical Report defines the test method for the determination of shielding eff
26、ectiveness 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 Technical Report is only intended for magnetic fields. As an activating source a 8/20 s impulses
27、current shall be used. The electrical field shielding effectiveness (SE) of metallic cable management systems is not covered by this Technical Report. While a screen is a technical provision, the shielding effectiveness shows the performance of this screen with regard to Electromagnetic Compatibilit
28、y (EMC) and Electromagnetic Interference (EMI). PD CLC/TR 50659:2017CLC/TR 50659:2017 (E) 6 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 E
29、lectromagnetic shielding coding The electromagnetic shielding coding consists of “EM” followed by five positions according to Table 1. Table 1 Electromagnetic shielding coding CMS Type EM First position Second position Third position Fourth position Fifth position Cable tray and cable ladder systems
30、 EM A letter representing the frequency band as shown in Table 2 A number being the test result for CMS with cover running in a plane parallel to the plane of the excitation winding (Figure 2a) A number being the test result for CMS without cover running in a plane parallel to the plane of the excit
31、ation winding (Figure 2b) A number being the test result for CMS with cover running in a plane perpendicular to the plane of the excitation winding (Figure 2c) A number being the test result for CMS without cover running in a plane perpendicular to the plane of the excitation winding (Figure 2d) Cab
32、le trunking systems EM A letter representing the frequency band as shown in Table 2 A number being the test result for CMS with cover running in a plane parallel to the plane of the excitation winding (Figure 2a) NA A number being the test result for CMS with cover running in a plane perpendicular t
33、o the plane of the excitation winding (Figure 2c) NA Cable ducting systems EM A letter representing the frequency band as shown in Table 2 A number being the test result for CMS with the larger dimension running in a plane parallel to the plane of the excitation winding (Figure 2a) NA A number being
34、 the test result for CMS with the larger dimension running in a plane perpendicular to the plane of the excitation winding (Figure 2c) NA Conduit systems EM A letter representing the frequency band as shown in Table 2 A number being the test result for CMS running in the plane of the excitation wind
35、ing (Figure 2a) NA A number being the test result for CMS running in the plane of the excitation winding (Figure 2c) NA 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 s impulse
36、s current included in this Technical Report only allows declaration for frequency band 10 kHz 100 kHz (Frequency band code A). PD CLC/TR 50659:2017CLC/TR 50659:2017 (E) 7 4.2.3 Additional rules The declared shielding effectiveness shall be the measured shielding effectiveness in dB rounded to the cl
37、osest 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 mag
38、netic 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 wi
39、nding 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 syste
40、m “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
41、 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. PD
42、 CLC/TR 50659:2017CLC/TR 50659:2017 (E) 8 4.3 Test arrangement 4.3.1 General The test arrangement is shown in Figures 1a to 1c. Figure 1a Test arrangement without CMS Figure 1b Test arrangement for CMS without cover PD CLC/TR 50659:2017CLC/TR 50659:2017 (E) 9 Figure 1c Test arrangement for CMS with
43、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 10 surge current generator 11 oscilloscope 1
44、2 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 th
45、e plane of the excitation winding Figure 1 Test arrangement for the measurement of shielding effectiveness of magnetic field The excitation winding shall be spaced at least 800 mm from any conductive part in any direction except on the feeding side. 4.3.2 Table The test arrangement shall be placed o
46、n 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. PD CLC/TR 50659:2017CLC/TR
47、 50659:2017 (E) 10 4.3.3 Sample The sample shall consist 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 shall be closed by a terminating fitting if it exists in the Cable Management System. In s
48、uch 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 shall be installed according to the manufacturers instructions, e.g. with the recommended torques. 4.3.4 Excita
49、tion winding The excitation winding shall consist 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 shall be 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 shall be checked by measuring the conta
