1、BS EN 50121-2:2017Railway applications Electromagnetic compatibilityPart 2: Emission of the whole railwaysystem to the outside worldBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN 50121-2:2017 BRITISH STANDARDNational forewordThis British Standard is the UK imp
2、lementation of EN 50121-2:2017. It supersedes BS EN 50121-2:2015 which is withdrawn. The UK participation in its preparation was entrusted to TechnicalCommittee GEL/9, Railway Electrotechnical Applications.A list of organizations represented on this committee can beobtained on request to its secreta
3、ry.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2017. Published by BSI Standards Limited 2017ISBN 978 0 580 94100 9ICS 29.020; 33.100.01; 45.020Compliance with a British Sta
4、ndard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 January 2017.Amendments/Corrigenda issued since publicationDate Text affectedBS EN 50121-2:2017EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE N
5、ORM EN 50121-2 January 2017 ICS 29.280; 33.100.10; 45.020 Supersedes EN 50121-2:2015 English Version Railway applications - Electromagnetic compatibility - Part 2: Emission of the whole railway system to the outside world Applications ferroviaires - Compatibilit lectromagntique - Partie 2: Emission
6、du systme ferroviaire dans son ensemble vers le monde extrieur Bahnanwendungen - Elektromagnetische Vertrglichkeit - Teil 2: Straussendungen des gesamten Bahnsystems in die Auenwelt This European Standard was approved by CENELEC on 2016-11-07. CENELEC members are bound to comply with the CEN/CENELEC
7、 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 CEN-CENELEC Management Centre or t
8、o 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 CEN-CENELEC Management Centre has the same status as th
9、e official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxemb
10、ourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Nor
11、mung CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members. Ref. No. EN 50121-2:2017 E BS EN 50121-2:2017EN 50121-2:2017 2 Contents PageEuropean foreword 4 1 Scope . 5 2 Normative r
12、eferences . 5 3 Terms, definitions and abbreviations 5 3.1 Terms and definitions . 5 3.2 Abbreviations 6 4 Emission limits . 6 4.1 Emission from the open railway system during train operation 6 4.2 Radio frequency emission from railway substations 6 5 Method of measurement of emission from moving ro
13、lling stock and substations 7 5.1 General and specific measurement parameters 7 5.1.1 General measurement parameters . 7 5.1.2 Measurement parameter for moving trains . 9 5.1.3 Measurement parameter for railway substations . 10 5.2 Acquisition methods . 10 5.2.1 General 10 5.2.2 Fixed frequency meth
14、od . 11 5.2.3 Frequency sweeping method . 11 5.3 Transients 11 5.4 Measuring conditions . 11 5.4.1 Weather conditions 11 5.4.2 Railway system operating modes 12 5.4.3 Multiple sources from remote trains 12 5.5 Test report . 12 Annex A (informative) Background to the method of measurement. 18 A.1 Int
15、roduction . 18 A.2 Requirement for a special method of measurement . 18 A.3 Justification for a special method of measurement 18 A.4 Frequency range . 19 A.5 Antenna positions . 19 A.6 Conversion of results if not measured at 10 m 19 A.7 Measuring scales 19 A.8 Repeatability of results . 19 A.9 Rail
16、way system conditions 20 A.9.1 Weather . 20 BS EN 50121-2:2017 EN 50121-2:2017 3 A.9.2 Speed, traction power . 20 A.9.3 Multiple sources from remote trains 20 A.10 Number of traction vehicles per train 20 Annex B (informative) Cartography Electric and Magnetic fields at traction frequencies . 21 Ann
17、ex C (informative) Emission values for lower frequency range 22 Bibliography . 25 BS EN 50121-2:2017EN 50121-2:2017 4 European foreword This document (EN 50121-2:2017) has been prepared by CLC/TC 9X, “Electrical and electronic applications for railways”. The following dates are fixed: latest date by
18、 which this document has to be implemented atnational level by publication of an identical national standardor by endorsement(dop) 2017-11-07 latest date by which the national standards conflicting withthis document have to be withdrawn(dow) 2019-11-07 This document supersedes EN 50121-2:2015. Atten
19、tion 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. EN 50121-2:2016 includes the following significant technical change with respect to EN 50121-2:2015: a
20、) deletion of Annex ZZ.This European Standard will be read in conjunction with EN 50121-1. EN 50121, Railway applications Electromagnetic compatibility, consists of the following parts: Part 1: General; Part 2: Emission of the whole railway system to the outside world the present document; Part 3-1:
21、 Rolling stock Train and complete vehicle; Part 3-2: Rolling stock Apparatus; Part 4: Emission and immunity of the signalling and telecommunications apparatus; Part 5: Emission and immunity of fixed power supply installations and apparatus. BS EN 50121-2:2017 EN 50121-2:2017 5 1 Scope This European
22、Standard is intended to define the electromagnetic environment of the whole railway system including urban mass transit and light rail system. It describes the measurement method to verify the emissions, and gives the cartography values of the fields most frequently encountered. This European Standa
23、rd specifies the emission limits of the whole railway system to the outside world. The emission parameters refer to the particular measuring points defined in Clause 5. These emissions should be assumed to exist at all points in the vertical planes which are 10 m from the centre lines of the outer e
24、lectrified railway tracks, or 10 m from the fence of the substations. Also, the zones above and below the railway system may be affected by electromagnetic emissions and particular cases need to be considered individually. These specific provisions need to be used in conjunction with the general pro
25、visions in EN 50121-1. For existing railway lines, it is assumed that compliance with the emission requirements of EN 50121-3-1, EN 50121-3-2, EN 50121-4 and EN 50121-5 will ensure the compliance with the emission values given in this part. For newly built railway systems it is best practice to prov
26、ide compliance to the emission limits given in this part of the standard (as defined in the EMC plan according to EN 50121-1). 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 referen
27、ces, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 55016-1-1, Specification for radio disturbance and immunity measuring apparatus and methods Part 1-1: Radio disturbance and immunity measuring apparatus M
28、easuring apparatus (CISPR 16-1-1) EN 55016-1-4, 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) IEC 60050-161, International Elec
29、trotechnical Vocabulary. Chapter 161: Electromagnetic compatibility 3 Terms, definitions and abbreviations 3.1 Terms and definitions For the purpose of this document, the terms and definitions given in IEC 60050-161 and the following apply. 3.1.1 apparatus device or assembly of devices which can be
30、used as an independent unit for specific functions SOURCE: IEC 60050-151:2001, 151-11-22 3.1.2 environment surroundings in which a product or system exists, including air, water, land, natural resources, flora, fauna, humans and their interrelation SOURCE: IEC Guide 109:2012, 3.3 BS EN 50121-2:2017E
31、N 50121-2:2017 6 SOURCE: IEC 60050-901:2013, 901-07-01 3.1.3 railway substation installation whose main function is to supply a contact line system at which the voltage of a primary supply system, and in some cases the frequency, is transformed to the voltage and frequency of the contact line 3.1.4
32、rolling stock all the vehicles with or without one or more motors SOURCE: IEC 60050-811: CDV2015, 811-02-01 3.2 Abbreviations For the purposes of this document, the following abbreviations apply. AC alternating current bw band width DC direct current E electric (field) EMC Electromagnetic Compatibil
33、ity FFT Fast Fourier transform H magnetic (field) HV high voltage 4 Emission limits 4.1 Emission from the open railway system during train operation The emission limits in the frequency range 150 kHz to 1 GHz are given in Figure 1 and the measurement method is defined in Clause 5. Annex B gives guid
34、ance values for typical maximum field values at fundamental frequency of different electrification systems which may occur. They depend on numerous geometrical and operational parameters which may be obtained from the infrastructure manager. It is not possible to undertake complete tests with quasi-
35、peak detection due to the reasons stated in Annex A. There may be cases in which radio or other railway external services with working frequencies below 150 kHz are in operation close to the railway system. The EMC management plan covers these cases and an adequate level of emission from the railway
36、 system on these working frequencies may be found in the values given in informative Annex C hence no guarantee can be given for an undisturbed operation. 4.2 Radio frequency emission from railway substations Radio frequency noise emission from the railway substation to the outside environment measu
37、red according to the method defined in Clause 5 shall not exceed the limits in Figure 2. BS EN 50121-2:2017 EN 50121-2:2017 7 The limits are defined as quasi-peak values and the bandwidths are those used in EN 55016-1-1: Bandwidth frequencies from 150 kHz to 30 MHz 9 kHz frequencies above 30 MHz 120
38、 kHz The distance of 10 m defined in Clause 5 shall be measured from the fence of the substation. If no fence exists, the measurements shall be taken at 10 m from the apparatus or from the outer surface of the enclosure if it is enclosed. For other kinds of fixed installations like auto-transformers
39、, the same limit and measuring distance shall be applied. There may be cases in which radio or other railway external services with working frequencies below 150 kHz are in operation close to the railway substation. The EMC management plan covers these cases and an adequate level of emission from ra
40、ilway substation on these working frequencies may be found in the values given in informative Annex C hence no guarantee can be given for an undisturbed operation. 5 Method of measurement of emission from moving rolling stock and substations NOTE The method of measurement is adapted from EN 5501623
41、to a railway system with moving rolling stock and substations. The background to the method of measurement of moving rolling stock is given in Annex A. 5.1 General and specific measurement parameters 5.1.1 General measurement parameters 5.1.1.1 Frequency bands Frequency bands and bandwidths at 6 dB
42、used for measurements are in accordance with EN 55016-1-1. These are: Frequency bands: 0,15 MHz to 30 MHz 30 MHz to 300 MHz 300 MHz to 1 GHz Bandwidth: 9 kHz 120 kHz 120 kHz Other bandwidth for peak measurement can be chosen according to EN 55016-1-1. Data measured with the reference bandwidth shall
43、 take precedence. 5.1.1.2 Measurement uncertainty The measurement uncertainty of the measuring equipment shall comply with the requirements in EN 55016-1-1 and EN 55016-1-4. Due to the measurement method, the normalized site attenuation may not be considered in the measurement uncertainty. 5.1.1.3 T
44、ypes of antennas To cover the full frequency range, antennas of different design are required. Typical equipment is described below: for 150 kHz to 30 MHz, a loop or frame antenna is used to measure H field (see Figure 3); for 30 MHz to 300 MHz, a biconical dipole is used to measure E field (see Fig
45、ure 4); for 300 MHz to 1,0 GHz, a log-periodic antenna is used to measure E field (see Figure 5). BS EN 50121-2:2017EN 50121-2:2017 8 For measurements in the frequency range of 30 MHz to 1 GHz a combined antenna may be used. Calibrated antenna factors are used to convert the terminal voltage of the
46、antenna to field strength. 5.1.1.4 Measurement distance and height The preferred distance of the measuring antenna from the centreline of the track on which the vehicle is moving (Test track) is 10 m. In the case of the log-periodic antenna, the 10 m distance is measured to the mechanical centre of
47、the array. The preferred distance of the measuring antenna while measuring the emission of the substation is 10 m from the outer fence of the substation, at the midpoints of the three sides, excluding the side which faces the railway system, unless this side is more than 30 m from the centre of the
48、nearest electrified railway track. In this case all four sides shall be measured. If the length of the side of the substation is more than 30 m, measurements shall be taken additionally at the corners. Where the antennas are not at 10 m, the results can be converted to an equivalent 10 m value by us
49、ing the following formula: E10 = Ex + n x 20 log10 (D/10) where E10 is the value at 10 m Ex is the measured value at D m n is a factor taken from Table 1 below. Table 1 Conversion factor n Frequency range n 0,15 MHz to 0,4 MHz 1,8 0,4 MHz to 1,6 MHz 1,65 1,6 MHz to 110 MHz 1,2 110 MHz to 1 000 MHz 1,0 The measured values (at the equivalent 10 m distance) shall not exceed the limits given in Figure 1 for the appropriate system voltage. No measurements are necessary for total underground railway systems with no sur
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