1、BRITISH STANDARDBS EN 50125-3:2003Railway applications Environmental conditions for equipment Part 3: Equipment for signalling and telecommunicationsICS 29.280g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g
2、55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58Incorporating corrigendumMay 2010 National forewordThis British Standard is the UK implementation of EN 50125-3:2003, incorporating corrigendum May 2010.The UK participation in its preparation was entrusted by Technical Committee GEL/9, Rail
3、way applications, to Subcommittee GEL/9/1, Signalling and communications.A list of organizations represented on this subcommittee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct
4、 application.Compliance with a British Standard cannot confer immunity from legal obligations.BS EN 50125-3:2003This British Standard was published under the authority of the Standards Policy and Strategy Committee on 19 March 2003 BSI 2010Amendments/corrigenda issued since publicationDate Comments
5、31 August 2010 Implementation of CENELEC corrigendum May 2010; Addition of Annex ZZISBN 978 0 580 71759 8EUROPEAN STANDARD EN 50125-3NORME EUROPENNEEUROPISCHE NORM January 2003CENELECEuropean Committee for Electrotechnical StandardizationComit Europen de Normalisation ElectrotechniqueEuropisches Kom
6、itee fr Elektrotechnische NormungCentral Secretariat: rue de Stassart 35, B - 1050 Brussels 2003 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.Ref. No. EN 50125-3:2003 EICS 29.280English versionRailway applications -Environmental conditions
7、for equipmentPart 3: Equipment for signalling and telecommunicationsApplications ferroviaires -Conditions denvironnementpour le matrielPartie 3: Equipement pour la signalisationet les tlcommunicationsBahnanwendungen -Umweltbedingungen fr BetriebsmittelTeil 3: Umweltbedingungen fr Signal-und Telekomm
8、unikationseinrichtungenThis European Standard was approved by CENELEC on 2002-12-01. CENELEC members are bound tocomply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration.Up-to-date lists
9、and bibliographical references concerning such national standards may be obtained onapplication to the Central Secretariat or to any CENELEC member.This European Standard exists in three official versions (English, French, German). A version in any otherlanguage made by translation under the respons
10、ibility of a CENELEC member into its own language andnotified 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, Hungary, Iceland, Ireland,
11、 Italy, Luxembourg, Malta,Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom.Incorporating corrigendum May 2010 2 ForewordThis European Standard was prepared by SC 9XA, Communication, signalling and processing systems,of Technical Committee CENELEC TC 9X, Electric
12、al and electronic applications for railways.The text of the draft was submitted to the formal vote and was approved by CENELEC as EN 50125-3 on2002-12-01.This European Standard was prepared under a mandate given to CENELEC by the EuropeanCommission and the European Free Trade Association and support
13、s the essential requirements ofDirective 96/48/EC.The following dates were fixed:- latest date by which the EN has to be implementedat national level by publication of an identicalnational standard or by endorsement (dop) 2003-12-01- latest date by which the national standards conflictingwith the EN
14、 have to be withdrawn (dow) 2005-12-01Annexes designated normative are part of the body of the standard.Annexes designated informative are given for information only.In this European Standard, Annexes A and C are normative and Annexes B and D are informative.BS EN 50125-3:2003EN 50125-3:2003 (E) 3 C
15、ontentsPage1 Scope.52 Normative references.53 Definitions 64 Environmental conditions.74.1 General74.2 Pressure 74.3 Temperature 84.4 Humidity.94.5 Wind.104.6 Rain .114.7 Snow and hail 114.8 Ice114.9 Solar radiation124.10 Lightning 124.11 Pollution.124.12 Fire protection134.13 Vibrations and shocks
16、.134.14 Electromagnetic compatibility154.15 Power supplies 15Annex A (normative) Climatograms16Annex B (informative) Examples of q and c factors .22Annex C (normative) Vibrations 23Annex D (informative) Example of European regions and theirs appropriate climatic classes27Bibliography.29Figure A.1 -
17、Temperature and humidity in external ambient . 16Figure A.2 - Temperature and humidity in cubicle. 17Figure A.3 - Temperature and humidity in shelter N.T.C. 18Figure A.4 - Temperature and humidity in shelter T.C. . 19Figure A.5 - Temperature and humidity in building N.C.C. 20Figure A.6 - Temperature
18、 and humidity in building C.C. . 21Figure C.1 - Power spectral density of vibrations on rail 23Figure C.2 - Power spectral density of vibrations on sleeper . 24Figure C.3 - Power spectral density of vibrations on ballast . 25BS EN 50125-3:2003EN 50125-3:2003 (E)Annex ZZ (informative) Coverage of Ess
19、ential Requirements of EC Directives .28 4 Figure C.4 - Power spectral density of vibrations outside the track(from 1 m to 3 m from the rail) 26Table 1 - Altitude relative to sea level. 7Table 2 - Temperature ranges at different sites 8Table 3 - Humidity ranges at different sites. 10Table 4 - Extern
20、al ambient pollution levels . 13Table 5 - Acceleration at track side positions 14Table 6 - Shocks at different track side positions (vertical axis) 14Table B.1 - Pressure head in relation to air speed 22Table B.2 - Typical values of form factor c 22BS EN 50125-3:2003EN 50125-3:2003 (E) 5 1 ScopeThis
21、 European Standard specifies the environmental conditions encountered within Europe. It can also beapplied elsewhere by agreement between the supplier and the customer.The scope of this European Standard covers the design and the use of equipment and any portableequipment for signalling and telecomm
22、unications systems (including test, measure, monitoringequipment, etc.).The portable equipment must comply with the sections of this European Standard relevant to their use.This European Standard does not specify the test requirements for equipment.In particular the standard intends to define interf
23、ace conditions between the equipment and its environment, parameters to be used by designers when calculating R.A.M.S. and life time with respect toenvironmental condition effects.In this respect it gives general guidance in order to allow consistent assessments of contractdocumentation for European
24、 projects.The defined environmental conditions are considered as normal in service.Microclimates surrounding components may need special requirements to be defined by the productstandard.The effects of any signalling and telecommunications equipment (in either or failure mode of operation)on the ove
25、rall signalling system safety are not within the scope of this European Standard. This EuropeanStandard does not provide the designer with information to enable him to determine the safety riskassociated with environmental conditions. The safety of persons in the vicinity of (or working on) thesigna
26、lling and telecommunications equipment is also out of the scope of this European Standard. Theeffects of vandalism on the equipment are not considered in this European Standard.This European Standard applies to all signalling and telecommunications systems except those used forcranes, mining vehicle
27、s and cable cars. It does not define the specifications for train-borne signalling andtelecommunications systems.The train-borne signalling and telecommunications systems must comply with rolling stock environmentalconditions specifications (EN 50125-1).2 Normative referencesThis European Standard i
28、ncorporates 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 listedhereafter. For dated references, subsequent amendments to or revisions of any of these publicationsapply to this Eur
29、opean Standard only when incorporated in it by amendment or revision. For undatedreferences the latest edition of the publication referred to applies (including amendments).EN 50121-1 Railway applications Electromagnetic compatibility Part 1: GeneralEN 50121-2 Railway applications Electromagnetic co
30、mpatibility Part 2: Emission of thewhole railway system to the outside worldEN 50121-4 Railway applications Electromagnetic compatibility Part 4: Emission andimmunity of the signalling and telecommunications apparatusBS EN 50125-3:2003EN 50125-3:2003 (E) 6 EN 50124-2 Railway applications Insulation
31、coordination Part 2: Overvoltages andrelated protectionEN 50125-1 1999 Railway applications Environmental conditions for equipment Part 1:Equipment on board rolling stockEN 60529 1991 Degrees of protection provided by enclosures (IP code) (IEC 60529:1989)EN 60721-3-3 1995 Classification of environme
32、ntal conditions Part 3: Classification of groups ofenvironmental parameters and their severities Section 3: Stationary use atweather protected locations (IEC 60721-3-3:1994)EN 60721-3-4 1995 Classification of environmental conditions Part 3: Classification of groups ofenvironmental parameters and th
33、eir severities Section 4: Stationary use atnon-weather protected locations (IEC 60721-3-4:1995)HD 478.2.1 S1 1989 Classification of environmental conditions Part 2: Environmental conditionsappearing in nature Temperature and humidity(IEC 60721-2-1:1982 + A1:1987)HD 478.2.3 S1 1990 Classification of
34、environmental conditions Part 2: Environmental conditionsappearing in nature Air pressure (IEC 60721-2-3:1987)ISO 4354 Wind actions on structures3 DefinitionsFor the purposes of this standard, the following definitions apply:3.1environmental conditionsrange of physical, chemical, electrical and biol
35、ogical conditions external to the equipment to which it issubjected in service3.2equipment housingcase, or other protective housing, provided by the manufacturer to mount his equipment and protect itfrom accidental damage, and occasionally from EMC or environmental effects. It may offer protection t
36、opersonnel e.g. from electric shock.Where the equipment housing provides the full required environmental protection, then it is treated as acubicle to define the relevant environmental parameters.The housing normally contains only the single suppliers equipment, and is only a part of a signalling or
37、telecommunications system3.3cubiclehousing for apparatus which normally is used to co-locate various parts of the signalling ortelecommunications system equipment, on occasion from different suppliers. It may contain variousequipment housings installed within the cubicle and offers further environme
38、ntal protection.A cubicle is normally only used to install apparatus and is in general not sufficiently large to affordprotection from weather to staff working on the apparatus.No climatic or temperature control is provided on cubicles but ventilation or occasionally fan assistedventilation is requi
39、red.Large housings which allow access to personnel but do not have the thermal properties of shelters,should be treated as cubiclesBS EN 50125-3:2003EN 50125-3:2003 (E) 7 3.4shelter/containershelters/containers are normally provided when a larger volume of equipment is to be co-located at asingle po
40、int or temperature/humidity sensitive equipment is to be installed.Shelters/containers normally have double walls with insulation material (or an air gap) between them.Shelters/containers also normally have limited facilities for personnel.Shelters/containers may also be provided with temperature co
41、ntrol, especially where temperaturesensitive apparatus is installed.Where shelters/containers are fitted with climatic control (temperature and humidity control), they shall betreated as buildings with climatic control (buildings C.C.)3.5buildingpermanent construction provided with main services (e.
42、g. water, electricity, gas,.) designed to protectequipment against the action of environmental conditions. A building may or may not be provided withclimatic control4 Environmental conditions4.1 GeneralIn the text, normal environmental conditions for Europe are classified with a suffix 1, 2, and spe
43、cialconditions with a suffix X.The customer shall specify clearly in his technical specification the required class for each environmentalparameter. If no class is specified, the class with suffix 1 shall be assumed.The severities specified are those which will have a low probability of being exceed
44、ed. All specifiedvalues are maximum or limit values. These values may be reached, but do not occur permanently.Depending on the situation there may be different frequencies of occurrence related to a certain period oftime. Such frequencies of occurrence have not been included in this European Standa
45、rd, but should beconsidered for any environmental parameter.They should additionally be specified if applicable.4.2 Pressure4.2.1 AltitudeTable 1 gives the different classes of altitude relative to sea level at which the equipment shall perform asspecified.Table 1 - Altitude relative to sea levelCla
46、sses Altitude range relative tosea levelmA1 up to 1 400A2 up to 1 000AX more than 1 400BS EN 50125-3:2003EN 50125-3:2003 (E) 8 Using AX class, the maximum altitude shall be specified by the customer.Altitude is relevant, in particular for the air pressure level and its consequence on cooling systems
47、. Theair pressure shall be considered according to HD 478.2.3.4.2.2 Pulse pressureParticular local air pressure conditions may exist due to the effects of trains running through a tunnel.The typical variation of pressure caused by train entering tunnel is:g68P = g177 5 kPaThe associated rate of chan
48、ge of pressure is:g68P/g68t = 0,5 to 1 kPa/s4.3 TemperatureTable 2 shows the overall system air temperature parameters.Table 2 - Temperature ranges at different sitesIn shelter a bIn building a bClimaticclassesExternalambientIn cubicle a bN.T.C. cT.C. dN.C.C. cC.C. eT1 (-25 +40) C (-25 +70) C (-5 +5
49、5) C (+15 +30) C (0 +45) C (+18 +27) CT2 (-40 +35) C (-40 +65) C (-20 +50) C (+15 +30) C (-5 +40) C (+18 +27) CTX (-55 +40) C (-55 +70) C (-35 +55) C (+15 +30) C (-5 +45) C (+18 +27) CaThe temperatures inside cubicle, shelter or building are values measured in free air not directly adjacent to heat emittingelements.bThe maximum temperatures inside a cubicle, a shelter N.T.C. and a building N.C.C. are higher than max. ambient temperaturesbecause of the effects of solar radiation and power dissip
