BS EN 62610-5-2016 Mechanical structures for electrical and electronic equipment Thermal management for cabinets in accordance with IEC 60297 and IEC 60917 series Cooling performan.pdf

1、Mechanical structures for electrical and electronic equipment Thermal management for cabinets in accordance with IEC 60297 and IEC 60917 seriesPart 5: Cooling performance evaluation for indoor cabinetsBS EN 62610-5:2016BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06

2、National forewordThis British Standard is the UK implementation of EN 62610-5:2016. It isidentical to IEC 62610-5:2016. The UK participation in its preparation was entrusted to TechnicalCommittee EPL/48, Electromechanical components and mechanical structures for electronic equipment.A list of organi

3、zations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions ofa contract. Users are responsible for its correct application. The British Standards Institution 2016.Published by BSI Standards Limited 2016IS

4、BN 978 0 580 85659 4ICS 31.240Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 June 2016.Amendments/corrigenda issued since publicationDate Text affectedBRITISH

5、STANDARDBS EN 62610-5:2016EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 62610-5 June 2016 ICS 31.240 English Version Mechanical structures for electrical and electronic equipment - Thermal management for cabinets in accordance with IEC 60297 and IEC 60917 series - Part 5: Cooling performance

6、evaluation for indoor cabinets (IEC 62610-5:2016) Structures mcaniques pour quipements lectriques et lectroniques - Gestion thermique pour les armoires conformes aux sries IEC 60297 et IEC 60917 - Partie 5: valuation des performances de refroidissement pour les baies intrieures (IEC 62610-5:2016) Me

7、chanische Bauweisen fr elektronische Einrichtungen - Wrmemanagement fr Schrnke nach den Reihen IEC 60297 und IEC 60917 - Teil 5: Bewertung der Khlleistung fr Innenraumschrnke (IEC 62610-5:2016) This European Standard was approved by CENELEC on 2016-05-25. CENELEC members are bound to comply with the

8、 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 CEN-CENELEC Management

9、 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 responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same

10、status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithu

11、ania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische

12、 Normung CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members. Ref. No. EN 62610-5:2016 E BS EN 62610-5:2016EN 62610-5:2016 2 European foreword The text of document 48D/591/CDV, fu

13、ture edition 1 of IEC 62610-5, prepared by SC 48D “Mechanical structures for electrical and electronic equipment” of IEC/TC 48 “Electrical connectors and mechanical structures for electrical and electronic equipment“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 62610-

14、5:2016. The following dates are fixed: latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2017-02-25 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 20

15、19-05-25 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. Endorsement notice The text of the International Standard IEC 62610-5:2016 wa

16、s approved by CENELEC as a European Standard without any modification. BS EN 62610-5:2016 2 IEC 62610-5:2016 IEC 2016 CONTENTS FOREWORD . 3 INTRODUCTION . 5 1 Scope 6 2 Normative references. 6 3 Terms and definitions 6 4 Cabinet cooling class criteria . 8 5 Cooling performance of cabinets 9 5.1 Gene

17、ral . 9 5.2 Cooling method of indoor cabinets . 9 5.2.1 Classification of cooling methods 9 5.2.2 Cooling performances 10 5.2.3 Concept for temperature rise 10 5.2.4 Temperature rise limits . 10 5.3 Natural convection cooling 10 5.4 Natural ventilation cooling . 11 5.5 Forced air cooling (forced ven

18、tilation) 11 5.6 Representative examples of calculated cooling performance 12 Annex A (informative) Background information . 13 A.1 Air velocity calculation of natural ventilation . 13 A.2 Background information of the validation test results by CFD simulations . 13 Figure 1 Natural convection cooli

19、ng 8 Figure 2 Natural ventilation cooling 9 Figure 3 Forced air cooling . 9 Figure 4 Velocity of natural convection as a function of cabinet height 11 Figure A.1 Balanced force on internal air of a cabinet . 13 Figure A.2 Thermal simulation example Type A . 14 Figure A.3 Thermal simulation example T

20、ype B . 15 Figure A.4 Thermal simulation example Type C . 16 Figure A.5 Thermal simulation example Type D . 17 Figure A.6 Thermal simulation example Type E . 18 Table 1 Classification of cooling method . 10 Table 2 Representative examples of calculated cooling performances . 12 BS EN 62610-5:2016IEC

21、 62610-5:2016 IEC 2016 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ MECHANICAL STRUCTURES FOR ELECTRICAL AND ELECTRONIC EQUIPMENT THERMAL MANAGEMENT FOR CABINETS IN ACCORDANCE WITH IEC 60297 AND IEC 60917 SERIES Part 5: Cooling performance evaluation for indoor cabinets FOREWORD 1) The Internationa

22、l Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic f

23、ields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any

24、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 participate in this preparation. IEC collaborates closely with the International Organization for Standardiz

25、ation (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has represe

26、ntation from all interested IEC National Committees. 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC c

27、annot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publicat

28、ions. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity assessment services and, in some areas,

29、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 publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including

30、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 indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance u

31、pon, 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 correct application of this publication. 9) Attention is drawn to the possibility that some of the element

32、s 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 62610-5 has been prepared by subcommittee 48D: Mechanical structures for electrical and electronic equipment, of IEC technical co

33、mmittee 48:Electrical connectors and mechanical structures for electrical and electronic equipment. The text of this standard is based on the following documents: CDV Report on voting 48D/591/CDV 48D/604/RVC Full information on the voting for the approval of this standard can be found in the report

34、on voting indicated in the above table. BS EN 62610-5:2016 4 IEC 62610-5:2016 IEC 2016 This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all parts in the IEC 62610 series, published under the general title Mechanical structures for electrical and electron

35、ic equipment Thermal management for cabinets in accordance with IEC 60297 and IEC 60917 series, can be found on the IEC website. Future standards in this series will carry the new general title as cited above. Titles of existing standards in this series will be updated at the time of the next editio

36、n. The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC website under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a re

37、vised edition, or amended. IMPORTANT The colour inside logo on the cover page of this publication indicates that it contains colours which are considered to be useful for the correct understanding of its contents. Users should therefore print this document using a colour printer. BS EN 62610-5:2016I

38、EC 62610-5:2016 IEC 2016 5 INTRODUCTION Indoor cabinets containing electronic equipment in subrack(s) and/ or chassis provide cooling by several different means, depending on the heat load of the equipment in the cabinet. In most cases air convection is used for cooling. The cabinets can be sealed o

39、r non-sealed, and may be equipped with fans for forced air cooling or rely on natural convention cooling without fans. In addition the subrack(s) or chassis may contain their own fans or rely on natural convention. Air convection systems are used to cool low to medium heat load applications. Indoor

40、cabinets containing subrack(s) and/ or chassis assembled with high heat load electronic equipment typically are cooled by air to air heat exchangers or water supplied heat exchangers, and are not considered in this standard. Sealed cabinets are used for systems operated in an industrial atmosphere,

41、to protect the equipment against harsh environments, such as dust or water (IP), or provisions for EMC or acoustic noise. Non-sealed cabinets are used in offices, laboratories or data centres, where the environment is controlled. The cooling performance of an electronic cabinet depends on the type o

42、f the cabinet, either sealed or non-sealed, with or without air moving devices, ventilated or re-circulated, and also, on the heat loads and the additional cooling systems (if any) of the equipment inside the cabinet. Therefore, it is difficult to determine properly the cooling capabilities of empty

43、 electronic cabinets for various applications. This standard introduces a simplified method for an overall cooling performance evaluation for empty indoor cabinets in accordance with IEC 60917 or IEC 60297 series. The purpose of this standard is to classify the cooling methods of empty indoor cabine

44、ts, to simplify the thermal hydraulic formulae for the evaluation and classification of cabinet cooling performances, and to exemplify the cooling performances for representative cabinet sizes based on IEC 60917 or IEC 60297. This enables the users to select the appropriate cabinet cooling solutions

45、 for their applications. BS EN 62610-5:2016 6 IEC 62610-5:2016 IEC 2016 MECHANICAL STRUCTURES FOR ELECTRICAL AND ELECTRONIC EQUIPMENT THERMAL MANAGEMENT FOR CABINETS IN ACCORDANCE WITH IEC 60297 AND IEC 60917 SERIES Part 5: Cooling performance evaluation for indoor cabinets 1 Scope This part of IEC

46、62610 specifies a method for evaluating the cooling capacity mainly for air convection cooling of empty cabinets in accordance with IEC 60297 and IEC 60917 series. 2 Normative references Void. 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 v

47、entilation movement of the air inside a cabinet, causing replacement of the inside air by the cabinet external ambient air 3.2 buoyancy force of air in the opposite direction of gravity that is produced by the difference in density due to the temperature differences between the air inside and extern

48、al to the cabinet 3.3 natural ventilation air movement produced by buoyancy 3.4 forced air cooling forced ventilation ventilation by air moving devices 3.5 natural convection cooling cooling by natural air convection and radiation 3.6 air moving device device creating air movement, e.g. fans, blower

49、s, and other forced air movement equipment 3.7 sealed cabinet, without air moving devices cabinet not provided with ventilation holes, not equipped with air moving devices, where the heat is transferred to the external environment by natural convection and radiation from the external surfaces of the cabinet BS EN 62610-5:2016IEC 62610-5:2016 IEC 2016 7 Note 1 to entry: The internal air temperature gradually increases from the bottom to the top of the