1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 50293:2012Road traffic signal systems Electromagnetic compatibilityBS EN 50293:2012 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 50
2、293:2012.It supersedes BS EN 50293:2001 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee EPL/526, Road traffic control signals.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not pu
3、rport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2012. Published by BSI Standards Limited 2012ISBN 978 0 580 77129 3 ICS 33.100.01; 93.080.30 Compliance with a British Standard cannot confer immunity fro
4、m legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 July 2012.Amendments issued since publicationDate T e x t a f f e c t e dBS EN 50293:2012EUROPEAN STANDARD EN 50293 NORME EUROPENNE EUROPISCHE NORM June 2012 CENELEC Europ
5、ean Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Management Centre: Avenue Marnix 17, B - 1000 Brussels 2012 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CEN
6、ELEC members. Ref. No. EN 50293:2012 E ICS 33.100.01; 93.080.30 Supersedes EN 50293:2000English version Road traffic signal systems - Electromagnetic compatibility Systmes de signaux de circulation routire - Compatibilit lectromagntique Straenverkehrs-Signalanlagen - Elektromagnetische Vertrglichkei
7、t This European Standard was approved by CENELEC on 2012-05-11. 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 bibliographica
8、l references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre 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 responsibili
9、ty of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre 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, Fra
10、nce, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 50293:2012EN 50293:2012 - 2 - Contents Foreword 31 Scope 42 Normative
11、 references . 43 Terms and definitions 54 Common test conditions 55 Test configuration 55.1 Equipment. 55.2 Supplier 65.3 Technical documentation 65.4 Standard load . 65.5 Cycle rate . 65.6 Test set up 66 Performance criteria 77 Emission . 77.1 Objective . 77.2 Conditions during testing . 77.3 Appli
12、cability 77.4 Emission limits 88 Immunity . 118.1 Objective . 118.2 Conditions during testing . 118.3 Applicability 118.4 Immunity test requirements . 11Figures Figure 1 Example of ports 5Tables Table 1 Emissions Enclosure port 9Table 2 Emissions Input AC mains ports (1 of 2) 9Table 2 Emissions Inpu
13、t AC mains ports (2 of 2) . 10Table 3 Emissions Telecommunication terminals . 10Table 4 Immunity Enclosure port 12Table 5 Immunity Ports for signal and control lines 12Table 6 Immunity Ports for DC power ports 13Table 7 Immunity Input and output AC power ports 13BS EN 50293:2012- 3 - EN 50293:2012 F
14、oreword This document (EN 50293:2012) has been prepared by CLC/BTTF 69-3 (TC 214 WG1) “Road traffic signal systems“. The following dates are fixed: latest date by which this document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2013
15、-05-11 latest date by which the national standards conflicting with this document have to be withdrawn (dow) 2015-05-11 This document supersedes EN 50293:2000. EN 50293:2012 includes the following significant technical changes with respect to EN 50293:2000: - adaption to the actual EMC-Standard; - u
16、pdate of the normative-references; - editorial revision. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC and/or CEN shall not be held responsible for identifying any or all such patent rights. This document has been prepar
17、ed under a mandate given to CENELEC by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). For the relationship with EU Directive(s) see informative Annex ZZ, which is an integral part of this document. BS EN 50293:2012EN 50293:201
18、2 - 4 - 1 Scope This product standard for EMC requirements applies to road traffic signal systems. The range of products included within the scope of this European Standard are road traffic signal systems and devices including for example signal heads, signalling devices and traffic signs, controlle
19、r and housing, supports, interconnections, traffic detectors, monitoring equipment, electrical supply. Road traffic signal systems operating in conjunction with other systems e.g. public lighting, railway systems should also comply with the respective standard and should not reduce the safety of all
20、 the equipment. Central Office equipment is excluded from this standard. Items with a radio-communication function should also refer to the European ETSI standards. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable
21、for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 12368, Traffic control equipment Signal heads EN 12675, Traffic signal controllers Functional safety requirements EN
22、 50556:2011, Road traffic signal systems EN 55014-1, Electromagnetic compatibility Requirements for household appliances, electric tools and similar apparatus Part 1: Emission (CISPR 14-1) EN 55022, Information technology equipment Radio disturbance characteristics Limits and methods of measurement
23、(CISPR 22) EN 61000-3-2, Electromagnetic compatibility (EMC) Part 3-2: Limits - Limits for harmonic current emissions (equipment input current 16 A per phase) (IEC 61000-3-2) EN 61000-3-3, Electromagnetic compatibility (EMC) Part 3-3: Limits Limitation of voltage changes, voltage fluctuations and fl
24、icker in public low-voltage supply systems, for equipment with rated current 16 A per phase and not subject to conditional connection (IEC 61000-3-3) EN 61000-4-2, Electromagnetic compatibility (EMC) Part 4-2: Testing and measurement techniques Electrostatic discharge immunity test (IEC 61000-4-2) E
25、N 61000-4-3, Electromagnetic compatibility (EMC) Part 4-3: Testing and measurement techniques Radiated, radio frequency electromagnetic field immunity test (IEC 61000-4-3) EN 61000-4-4, Electromagnetic compatibility (EMC) Part 4-4: Testing and measurement techniques Electrical fast transient/burst i
26、mmunity test (IEC 61000-4-4) EN 61000-4-5, Electromagnetic compatibility (EMC) Part 4-5: Testing and measurement techniques Surge immunity test (IEC 61000-4-5) EN 61000-4-6, Electromagnetic compatibility (EMC) Part 4-6: Testing and measurement techniques Immunity to conducted disturbances, induced b
27、y radio-frequency fields (IEC 61000-4-6) EN 61000-4-8, Electromagnetic compatibility (EMC) Part 4-8: Testing and measurement techniques Power frequency magnetic field immunity test (IEC 61000-4-8) EN 61000-4-11, Electromagnetic compatibility (EMC) Part 4-11: Testing and measurement techniques Voltag
28、e dips, short interruptions and voltage variations immunity tests (IEC 61000-4-11) IEC 60050-161:1990, International electrotechnical vocabulary Chapter 161: Electromagnetic compatibility IEC Guide 107:2009, Electromagnetic compatibility Guide to the drafting of electromagnetic compatibility publica
29、tions BS EN 50293:2012- 5 - EN 50293:2012 3 Terms and definitions For the purposes of this document, the terms and definitions related to EMC and to relevant phenomena given in the EEC Directive, in IEC 60050-161:1990, in IEC Guide 107:2009 and CISPR Publications apply. The following particular term
30、s and definitions apply. 3.1 port particular interface of the specified apparatus with the external electromagnetic environment, including communication interface (see Figure 1) 3.2 enclosure port physical boundary of the apparatus through which electromagnetic fields may radiate or impinge 3.3 sign
31、al/control port points at which a conductor or a cable is connected to the apparatus. This includes cables to signal heads, signalling devices and traffic signs, traffic sensors, detectors and monitoring equipment. SOURCE: EN 50556 APPARATUS Enclosure portEarth port Signal- / control- / communicatio
32、n port DC power port AC power port Figure 1 Example of ports 4 Common test conditions In general the EMC testing of equipment requires it to be operated under conditions similar to those which would be found in practice. Equipment may be tested individually or in a representative system as described
33、 below. The modes of operation that are likely to cause highest levels of emission and in addition those likely to give rise to the most susceptible condition shall be selected. The equipment under test will be tested in such a manner so as to maximise emission and susceptibility levels at the highe
34、st operational frequencies. Equipment having dimmed and undimmed conditions of operation shall be tested in that condition which produces the higher emission level. For traffic controllers, tests shall be carried out in a system configuration as described in 5.6 with standard loads and standard cycl
35、es as defined in 5.4 and 5.5. The standard loads do not need to be installed in the test chamber. Details of the test configuration and the length of the interconnecting cables used shall be included in the test report. 5 Test configuration 5.1 Equipment The equipment shall be a standard production
36、version. BS EN 50293:2012EN 50293:2012 - 6 - 5.2 Supplier The supplier shall specify the functions of the equipment. 5.3 Technical documentation The equipment shall be accompanied by the necessary technical documentation. This documentation shall at least define modes of operation, the configuration
37、 details for the test, the technical specification and installation details sufficient to repeat the test. 5.4 Standard load For controller or system tests the controller shall be set for two signal group operations. One signal group shall be connected to the maximum load and the other to the minimu
38、m load. These loads shall be either the standard signal heads together with their associated control gear or an electrical equivalent load. 5.5 Cycle rate The cycle rate for vehicle controller shall be adjusted such that a minimum of three switching operations are carried out in one minute. A switch
39、ing operation is defined as one intentional opening or closing of a switch or contact, i.e. when a lamp is switched ON and then OFF this constitutes two switching operations. 5.6 Test set up 5.6.1 All interconnecting cables shall be at least 7 m in length. 5.6.2 All interconnecting cables shall be s
40、eparated from the floor level by 100 mm. This shall be achieved by an insulated support and stand-offs. 5.6.3 If a controller is required to be used with loop detectors in its enclosure, at least one detector loop in the manufacturers configuration shall be installed in the calibration zone of the t
41、est chamber. This may be achieved by locating the manufacturers detector loop configuration and equipment side by side. Only the controller is required to be rotated during testing. NOTE The inclusion of a single loop detector does not infer certification of that loop detector product nor limit the
42、controller to that specific detector type. 5.6.4 For tests on individual items of equipment, the actual loads/drivers shall be consistent with the requirements of 5.6.1, 5.6.2 and 5.6.3 and shall be agreed with the test house. 5.6.5 For vehicle detectors, the manufacturers loop configuration shall b
43、e separated from the floor level by 100 mm. This shall be achieved by an insulated support and stand-offs. BS EN 50293:2012- 7 - EN 50293:2012 6 Performance criteria The manufacturer and the test house shall define precise criteria for the evaluation of the immunity test results. Apparatus shall not
44、 become dangerous or unsafe as defined in EN 50556, EN 12368 and EN 12675 as a result of the application of the tests defined in this European Standard. A functional description and a definition of the following performance criteria, during or as a consequence of the EMC testing, shall be noted in t
45、he test report. Performance Criteria A: No change shall be observable in the operation. The traffic system shall conform to the standards EN 50556, EN 12368 and EN 12675. Performance Criteria B: There shall be no degradation of safety requirements. There shall be no alteration in the operating mode
46、or of the stored data (Timings, fault logs etc.). It is acceptable for the signals to switch on or off for a period less than the maximum failure detection time. It is acceptable for an additional vehicle to be detected or for the presence of a vehicle not to be detected during the period of the dis
47、turbance. 7 Emission 7.1 Objective The objective of this section is to define limits and test methods for apparatus defined in the scope, in relation to electromagnetic emissions which may cause interference in other apparatus e.g. radio receivers. Test requirements are specified for each port consi
48、dered. NOTE 1 The limits in this standard may not, however, provide full protection against interference to radio and television reception when the apparatus is used closer than 10 m to the receiving antenna. NOTE 2 In special cases, for instance when highly susceptible apparatus is being used in pr
49、oximity, additional mitigation measures may have to be employed to reduce the electromagnetic emission further below the specified levels. 7.2 Conditions during testing The measurements shall be made in the operating mode producing the largest emission in the frequency band being investigated consistent with normal applications. An attempt shall be made to maximise
