BS EN 50125-2-2003 铁路设施.设备的环境条件.固定的电力设备.pdf

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1、BRITISH STANDARD BS EN 50125-2:2002 Railway applications Environmental conditions for equipment Part 2: Fixed electrical installations The European Standard EN 50125-2:2002 has the status of a British Standard ICS 29.280 BS EN 50125-2:2002 This British Standard was published under the authority of t

2、he Standards Policy and Strategy Committee on 19 March 2003 BSI 19 March 2003 ISBN 0 580 41447 7 National foreword This British Standard is the official English language version of EN 50125-2:2002. The UK participation in its preparation was entrusted by Technical Committee GEL/9, Railway electrotec

3、hnical applications, to Subcommittee GEL/9/3, Fixed equipment, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred

4、 to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provision

5、s of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or

6、proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 15 and a back cover. The BSI copyright date di

7、splayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments EUROPEAN STANDARDEN 50125-2 NORME EUROPENNE EUROPISCHE NORMDecember 2002 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Elec

8、trotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2002 CENELEC -All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 50125-2:2002 E ICS 29.280 English version Railway applica

9、tions - Environmental conditions for equipment Part 2: Fixed electrical installations Applications ferroviaires - Conditions denvironnement pour le matriel Partie 2: Installations lectriques fixes Bahnanwendungen - Umweltbedingungen fr Betriebsmittel Teil 2: Ortsfeste elektrische Anlagen This Europe

10、an Standard was approved by CENELEC on 2002-07-01. 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 bibliographical references

11、concerning such national standards may be obtained on application to the Central Secretariat 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 responsibility of a CENELEC member

12、into its own language and notified 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, Italy, Luxembourg, Malta

13、, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom. EN 50125-2:2002- 2 - Foreword This European Standard was prepared by SC 9XC, Electric supply and earthing systems for public transport equipment and ancillary apparatus (fixed installations), of Technical Commi

14、ttee CENELEC TC 9X, Electrical and electronic applications for railways. The text of the draft was submitted to the formal vote and was approved by CENELEC as EN 50125-2 on 2002-07-01. The following dates were fixed: -latest date by which the EN has to be implemented at national level by publication

15、 of an identical national standard or by endorsement(dop)2003-07-01 -latest date by which the national standards conflicting with the EN have to be withdrawn(dow)2005-07-01 Annexes designated “informative“ are given for information only. In this standard, Annex A is informative. _ - 3 -EN 50125-2:20

16、02 Contents Page 1Scope .4 2Normative references4 3Definitions.5 4Environmental conditions6 4.1General .6 4.2Altitude 6 4.3Air temperature and humidity.7 4.4Air movement 8 4.5Rain.10 4.6Hail10 4.7Snow and ice.10 4.8Solar radiation .10 4.9Vibration and shocks .11 4.10Pollution.11 4.11Lightning12 4.12

17、Electromagnetic compatibility 12 4.13Fire protection .12 4.14Environmental conditions in tunnels.12 Annex A (informative) Conditions relating to tunnels 13 Bibliography .15 Figure 1 - Ratio of reference wind velocity corresponding to a yearly probability p to wind velocity with a probability of 0,02

18、9 Table 1 -Altitude relative to sea level7 Table 2 -Reference wind velocities (Vref,0,0,2).9 Table 3 -Wind velocities.10 Table 4 -Ice loads 10 Table 5 -Solar radiation11 Table 6 -Pollution type .12 EN 50125-2:2002- 4 - 1Scope This European Standard takes into account environmental conditions within

19、Europe. This European Standard deals with the environmental influences on fixed electrical installations for traction power supply and equipment essential to operate a railway -in open air; -in covered areas; -in tunnels; -within enclosures placed in above areas. Escalators, lifts, fire protection,

20、lighting in tunnels and on platforms, ticket machines, ventilation systems and non-essential functions are not included. Such influences include altitude, temperature and humidity, air movement, rain, snow, hail, ice, sand, solar radiation, lightning, pollution, vibration, shocks and EMC. This stand

21、ard does not specify the test requirements for equipment. In case of environmental conditions not covered by the standard the data to be adopted for a specific project should be clearly stipulated when preparing a specification. This standard is not intended to apply to cranes, installations in unde

22、rground mines, suspended cable cars and funicular railways. Nuclear radiation is excluded. Signalling and telecommunications systems are not considered in this standard. Fixed installed signalling and telecommunication equipment shall comply with EN 50125-3. 2Normative references This European Stand

23、ard incorporates by dated or undated references, provisions from other publications. These normative references are cited at the appropriate place in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to

24、this European Standard only when incorporated in it by amendment or revision. For undated references the last edition of the publication referred to applies (including amendments). EN 50121-5Railway applications Electromagnetic compatibility Part 5: Emission and immunity of fixed power supply instal

25、lations and apparatus EN 50124-1Railway applications - Insulation coordination Part 1: Basic requirements - Clearances and creepage distances for all electrical and electronic equipment EN 50124-2Railway applications - Insulation coordination Part 2: Overvoltages and related protection - 5 -EN 50125

26、-2:2002 EN 50125-3Railway applications Environmental conditions for equipment Part 3: Equipment for signalling and telecommunications EN 60529Degrees of protection provided by enclosures (IP code) (IEC 60529) EN 60721-3-3Classification of environmental conditions Part 3: Classification of groups of

27、environmental parameters and their severities Section 3: Stationary use at weatherprotected locations (IEC 60721-3-3) EN 60721-3-4Classification of environmental conditions Part 3: Classification of groups of environmental parameters and their severities Section 4: Stationary use at non-weatherprote

28、cted locations (IEC 60721-3-4) ENV 1991-2-4Eurocode 1: Basis of design and actions on structures Part 2-4: Actions on structures Wind actions HD 478.2.1Classification of environmental conditions Part 2: Environmental conditions appearing in nature - Temperature and humidity (IEC 60721-2-1) HD 478.2.

29、2Classification of environmental conditions Part 2: Environmental conditions appearing in nature - Precipitation and wind (IEC 60721-2-2) HD 478.2.3Classification of environmental conditions Part 2: Environmental conditions appearing in nature - Air pressure (IEC 60721-2-3) 3Definitions For the purp

30、ose of this standard the following definitions apply. 3.1 covered area protected from precipitation, but open to the effects of humidity and wind NOTE 1Some constructions may be affected by solar radiation. NOTE 2Tunnels are excluded from this definition. 3.2 cubicle closed space where the direct op

31、en air influences are excluded 3.3 environment the surrounding objects, region or circumstances which may influence the behaviour of the system and/or may be influenced by the system EN 50125-2:2002- 6 - 3.4 environmental conditions conditions which are brought about because of the environment 3.5 e

32、nvironmental protection provisions to avoid the interaction of the system with the environment 3.6 open air not protected from direct environmental influences 3.7 tunnel artificial underground passage through a hill or below the normal ground level or under sea level 4Environmental conditions 4.1Gen

33、eral The purchaser shall specify clearly in his specification the class to consider. Otherwise the class mentioned in the product standard shall apply where available. Where no other specifications are specified, the normal requirements in this standard shall be used. Installations shall function, o

34、r be capable of functioning, under all specified conditions. The environmental conditions are considered for normal operation. More severe conditions may be specified for the equipment to withstand, when not operating, without suffering damage. An example of such a condition is wind velocity high en

35、ough to cause dewirements but not tearing down the overhead contact line. Microclimates surrounding components may need special requirements which are covered by product standards. Special conditions are classified with a suffix X. The severities specified are those which have a low probability of b

36、eing exceeded. All specified values are either maximum or minimum limits. These values can be reached, but do not occur permanently. Depending on the situation there are different frequencies of occurrence related to a certain period of time. Such frequencies of occurrence have not been included in

37、this standard, but should be considered for any environmental parameter, if relevant. In this case they shall be specified. 4.2Altitude Altitude related to sea level is relevant for air pressure. Air pressure shall be considered in accordance with HD 478.2.3. The different classes of altitude above

38、sea level in open air at which the equipment shall perform as specified are given in Table 1. - 7 -EN 50125-2:2002 Table 1 - Altitude relative to sea level ClassAltitude range relative to sea level m A 1up to 1 400 A 2up to 1 000 A Xabove 1 400 NOTE In class A 2 installations under sea level are inc

39、luded. Using A X class, the maximum altitude shall be specified by the purchaser. 4.3Air temperature and humidity 4.3.1General For air temperature and humidity in open air, the climates according to Table 2 of HD 478.2.1 shall be used, excluding the first and the last two climates. These values are

40、illustrated in Figure 2 to Figure 7 of HD 478.2.1. For weather-protected areas, information is given in EN 60721-3-3. Different values depending on national requirements are possible. These values are to be agreed separately between purchaser and supplier, as appropriate to the local conditions. In

41、principle, air temperatures are measured in the shade. The values of humidity can be 100 %. 4.3.2Special conditions When considering the temperature of an object, the effects of thermal radiation from the ground, or due to the proximity of other large objects, has to be taken into account. In open a

42、ir The temperatures in railway surroundings, e.g. during summer on large expanses of ballast such as are to be found in large stations, can be higher than outside the area itself. In covered areas Maximum temperatures in covered areas should be not less than those specified for open air. Special att

43、ention should be given to installations under transparent roofs which are subject to solar radiation. Conditions depend on the cover material. In cubicles Depending on the cubicle, the maximum ambient temperature should be specified up to 30 K higher than those specified in open air . EN 50125-2:200

44、2- 8 - Temperatures inside a cubicle shall be measured in free space away from the vicinity of the heat emitting elements. Cubicles in covered areas or with other screening above should have modified values. Temperature and humidity in cubicles are a function of the design of the enclosure and will

45、depend on the ventilation arrangements. If the equipment is to be installed in a controlled climatic environment and is required to operate only under these conditions, the temperature range shall be agreed between purchaser and supplier. The effect of condensation and also temperature changes and e

46、xtremes of temperature shall not lead to any malfunction or failure. 4.4Air movement Calculations of air movement and air pressure as used in special national standards. 4.4.1Wind Wind velocity is defined in metres per second (m/s) and should be referred either -to a height of 10 m above ground, or

47、-to a height of 500 m above ground (gradient velocity). The averaging period is 10 min and the reference values have a yearly probability of occurrence of 0,02 (equivalent to a return period of 50 years). For other probabilities the corresponding wind velocities can be taken from Figure 1 of ENV 199

48、1-2-4. Wind action on structures is greatly influenced by details of the local landscape, tall buildings and height above the ground. The greater the roughness of the ground surface, the more the wind action close to this surface is reduced; thus there may be considerable differences between wind ne

49、ar the ground surface and that at greater heights above the ground surface. Wind action depending on the surface is classified into four categories. Relatively open terrain with trees and other obstacles is most frequently experienced in Central Europe and is recommended as the basis for reference wind velocities. Variation of the 10 min mean values with height h can be calculated by 10 10h h vv where 10 wind velocity at 10 m height in m/s, h wind velocity at height h in m/s at m, roughness parameter depending on the terrain category w