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

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 the 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 electrotechnical 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 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 provisions 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 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 displayed 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 Electrotechnique 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 applications - 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 European 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 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 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, 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 Committee 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 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 50125-2:2002 Contents Page 1Scope .4 2Normative references.4 3Definitions.5 4Environmental conditions.6 4.1General .6 4.2Altitude .6 4.3Air temperature and humidity.7 4.4Air movement .8 4.5Rain.10 4.6Hail.10 4.7Snow and ice.10 4.8Solar radiation .10 4.9Vibration and shocks .11 4.10Pollution.11 4.11Lightning.12 4.12Electromagnetic 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 0,02.9 Table 1 -Altitude relative to sea level.7 Table 2 -Reference wind velocities (Vref,0,0,2).9 Table 3 -Wind velocities.10 Table 4 -Ice loads .10 Table 5 -Solar radiation.11 Table 6 -Pollution type .12 EN 50125-2:2002- 4 - 1Scope This European Standard takes into account environmental conditions within 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, 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 standard 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 underground 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 Standard 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 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 installations 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 50125-2:2002 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 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-weatherprotected 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 478.2.2Classification 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 purpose 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 open 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 environmental 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 4.1General 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, or 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 enough 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 being 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 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 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 included. 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 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 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 air The temp