1、 IEC 62498-2 Edition 1.0 2010-08 INTERNATIONAL STANDARD NORME INTERNATIONALE Railway applications Environmental conditions for equipment Part 2: Fixed electrical installations Applications ferroviaires Conditions denvironnement pour le matriel Partie 2: Installations lectriques fixes IEC 62498-2:201
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16、ients ou contactez-nous: Email: csciec.ch Tl.: +41 22 919 02 11 Fax: +41 22 919 03 00 IEC 62498-2 Edition 1.0 2010-08 INTERNATIONAL STANDARD NORME INTERNATIONALE Railway applications Environmental conditions for equipment Part 2: Fixed electrical installations Applications ferroviaires Conditions de
17、nvironnement pour le matriel Partie 2: Installations lectriques fixes INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE Q ICS 45.060 PRICE CODE CODE PRIX ISBN 978-2-88912-096-3 Registered trademark of the International Electrotechnical Commission Marque dpose de la
18、 Commission Electrotechnique Internationale 2 62498-2 IEC:2010 CONTENTS FOREWORD.3 1 Scope.5 2 Normative references .5 3 Terms and definitions .6 4 Environmental conditions7 4.1 General .7 4.2 Altitude7 4.3 Air temperature and humidity.8 4.3.1 General .8 4.3.2 Special conditions .8 4.4 Air movement
19、8 4.4.1 Wind8 4.4.2 Surrounding air9 4.5 Rain 10 4.6 Hail .10 4.7 Snow and ice.10 4.7.1 Accretion of ice on conductors.10 4.7.2 Snow depth .10 4.8 Solar radiation.10 4.9 Vibrations and shocks .11 4.10 Pollution11 4.11 Lightning .12 4.12 Electromagnetic compatibility 12 4.13 Fire protection.12 4.14 E
20、nvironmental conditions in tunnels 12 4.15 Earthquakes12 Annex A (informative) Conditions relating to tunnels 13 Annex B (informative) Conditions relating to wind velocity .15 Bibliography17 Figure B.1 Ratio of reference wind velocity corresponding to a yearly probability p to wind velocity with a p
21、robability of 0,02 16 Table 1 Altitude relative to sea level 7 Table 2 Wind velocities9 Table 3 Ice loads .10 Table 4 Solar radiation.11 Table 5 Pollution type 12 Table B.1 Reference wind velocities (v ref,0,02 )15 62498-2 IEC:2010 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ RAILWAY APPLICATIONS E
22、NVIRONMENTAL CONDITIONS FOR EQUIPMENT Part 2: Fixed electrical installations FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
23、international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (her
24、eafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non- governmental organizations liaising with the IEC also pa
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29、f conformity. Independent certification bodies provide conformity assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any services carried out by independent certification bodies. 6) All users should ensure that they have the latest edition of this p
30、ublication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indire
31、ct, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the
32、correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 62498-2 has been prepar
33、ed by IEC technical committee 9: Electrical equipment and systems for railways. This standard is based on EN 50125-2. The text of this standard is based on the following documents: FDIS Report on voting 9/1403/FDIS 9/1452/RVD Full information on the voting for the approval of this standard can be fo
34、und in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. 4 62498-2 IEC:2010 A list of all parts of IEC 62498 series, under the general title Railway applications Environmental conditions for equipment, can be found
35、 on the IEC website. The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdraw
36、n, replaced by a revised edition, or amended. 62498-2 IEC:2010 5 RAILWAY APPLICATIONS ENVIRONMENTAL CONDITIONS FOR EQUIPMENT Part 2: Fixed electrical installations 1 Scope This part of IEC 62498 takes into account environmental conditions to be considered in the railways. This Standard deals with th
37、e 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 the above-mentioned areas. Escalators, lifts, fire protection, lighting in tunnels and on platfor
38、ms, 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, EMC and earthquakes. This standard does not specify
39、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, suspe
40、nded cable cars and funicular railways. Nuclear radiation is excluded. Signalling and telecommunications systems are not considered in this standard. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the editi
41、on cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60529, Degrees of protection provided by enclosures (IP code) IEC 60721-2-1:1982, Classification of environmental conditions Part 2-1 : Environmental conditions appearing i
42、n nature Temperature and humidity IEC 60721-2-2, Classification of environmental conditions Part 2-2: Environmental conditions appearing in nature Precipitation and wind 6 62498-2 IEC:2010 IEC 60721-2-3, Classification of environmental conditions Part 2-3: Environmental conditions appearing in natur
43、e Air pressure IEC 60721-3-3, Classification of environmental conditions Part 3-3: Classification of groups of environmental parameters and their severities Stationary use at weatherprotected locations IEC 60721-3-4, Classification of environmental conditions Part 3: Classification of groups of envi
44、ronmental parameters and their severities Section 4: Stationary use at non- weatherprotected locations IEC 62236-5, Railway applications Electromagnetic compatibility Part 5: Emission and immunity of fixed power supply installations and apparatus IEC 62497-1, Railway applications Insulation coordina
45、tion Part 1: Basic requirements Clearances and creepage distances for all electrical and electronic equipment IEC 62497-2, Railway applications Insulation coordination Part 2: Overvoltages and related protection IEC 62498-3:2010, Railway applications Environmental conditions for equipment Part 3: Eq
46、uipment for signalling and telecommunications 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 covered area protected from precipitation, but open to the effects of humidity and wind NOTE 1 Some constructions may be affected by solar radiation
47、. NOTE 2 Tunnels 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 3.4 environmental con
48、ditions 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 62498-2 IEC:2010 7 3.7 tunnel artificial underground passage throu
49、gh a hill or below the normal ground level or under sea level 4 Environmental conditions 4.1 General 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 shal
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