IEC 60068-2-13-1983 Environmental testing Part 2 Tests Test M Low air pressure《环境试验 第2-13部分 试验 试验M 低气压》.pdf

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1、NORME CE1 IEC 6812-1 3 INTERNATIONALE INTERNATIONAL STANDARD Quatrime dition Fourth edition 1983 Essais fondamentaux climatiques et de robustesse mcanique Deuxime partie: Essais - Essai M: Basse pression atmosphrique Basic environmental testing procedures Part 2: Tests - Test M: Low air pressure Num

2、ro de rfrence Reference number CEIAEC 68-2-1 3: 1983 Numros des publications Depuis le ler janvier 1997, les publications de la CE1 sont numrotes a partir de 60000. Publications consolides Les versions consolides de certaines publications de la CE1 incorporant les amendements sont disponibles. Par e

3、xemple, les numros ddition 1.0, 1.1 et 1.2 indiquent respectivement ia publication de base, la publication de base incorporant lamendement 1, et ia publication de base incorporant les amendements 1 et 2. Validit de la prsente publication Le contenu technique des publications de la CE1 est constammen

4、t revu par la CEi afin quil reflte ltat actuei de la technique. Des renseignements relatifs la date de reconfir- mation de la publication sont disponibles dans le Catalogue de la CEi. Les renseignements relatifs des questions ltude et des travaux en cours entrepris par le comit technique qui a tabli

5、 cette publication, ainsi que la liste des publications tablies, se trouvent dans les documents ci- dessous: Site web de la CEI* Catalogue des publications de la CE1 Publi annuellement et mis jour rgulirement (Catalogue en ligne) Bulletin de la CE1 Disponible la fois au site web. de la CEI et comme

6、priodique imprim Terminologie, symboles graphiques et littraux En ce qui concerne ia terminologie gnrale, le lecteur se reportera la CE1 60050: Vocabulaire Electro- technique International (VEI). Pour les symboles graphiques, les symboles littraux et les signes dusage gnral approuvs par la CEI. le l

7、ecteur consultera la CE1 60027: Symboles littraux 2 utiliser en lectrotechnique, la CE1 60417: Symboles graphiques utilisables sur le materiel. Index, relev et compilation des feuilles individuelles, et la CE1 60617: Symboles graphiques pour schmas. * Voir adresse -site web sur la page de titre. Num

8、bering As from 1 January 1997 all IEC publications are issued with a designation in the 60000 series. Consolidated publications Consolidated versions of some IEC publications including amendments are available. For example, edition numbers 1.0, 1.1 and 1.2 refer, respectively, to the base publicatio

9、n, the base publication incor- porating amendment 1 and the base publication incorporating amendments 1 and 2. Validity of this publication The technical content of IEC publications is kept under constant review by the IEC, thus ensuring that the content reflects current technology. Information rela

10、ting to the date of the reconfirmation of the publication is available in the IEC catalogue. Information on the subjects under consideration and work in progress undertaken by the technical committee which has prepared this publication, as well as the list of publications issued, is to be found at t

11、he following IEC sources: IEC web site Catalogue of IEC publications Published yearly with regular updates (On-line catalogue) Available both at the iEC web site and as a printed periodical IEC Bulletin Terminology, graphical and letter symbols For general terminology, readers are referred to I EC 6

12、0050: International Electrotechnical Vocabulary (IEV). For graphical symbols, and letter symbols and signs approved by the IEC for general use, readers are referred to publications IEC 60027: fetter symbols to be used in electrical technology, IEC 6041 7: Graphical symbols for use on equipment. Inde

13、x, survey and compilation of the single sheets and IEC 60617: Graphical symbols for diagrams. * See web site address on title page. NORME I NTE RN AT1 ON ALE INTERNATIONAL STANDARD CE1 IEC 68-24 3 Quatrime dition Fourth edition 1983 Essais fondamentaux climatiques et de robustesse mcanique Deuxime p

14、artie: Essais - Essai M: Basse pression atmoshrique Basic environmental testing procedures Part 2: Tests - Test M: Low air pressure O CE1 1983 Droits de reproduction rservs - Copyright - all rights reserved Aucune partie de cette publication ne peut &re reproduite ni utilise sous queique forme que s

15、oit et par aucun pro- cd, lectronique ou mcanique, y compro h photocopie et les microfilms. sans Iamrd ait de Iditeur No part of this publication my be reproduced or utilized in any form or by any means, electronic w mechanical. including photocopying and microfilm, without permission in writing fro

16、m the publisher. Bureau Central de la Commission Electrotechnique Internationale 3, nie de Varemb Genve, Suisse Commission Electrotechnique Internationale CODE PRIX international Electrotechnical Commission PRICE CODE E MemnyHapoman 3nerporexw?cnan HOMHCCMR Pour prix, voir catalogue en vigueut For p

17、rice. see current catalogue PRAMBULE . PREFACE . Articles -2- SOMMAIRE . . 68-2-13 O CE1 1983 1 . Introduction . 2 . Description gnrale . 3 . Description de lappareillage dessai . 4 . Svrits 5 . Prconditionnement . 6 . Mesures initiales . 7 . Epreuve . 8 . Reprise . 9 . Mesures finales 10 . Renseign

18、ements que doit fournir la spcification particulire Pages 4 4 6 6 6 8 8 10 10 10 10 12 68-2-13 O IEC 1983 -3- CONTENTS Page FOREWORD 5 PREFACE 5 Clause 1 . Introduction . 7 2 . General description 7 3 . Description of test apparatus . 7 4 . Severities . 9 5 . Pre-conditioning . 9 6 . Initiai measure

19、ments . 11 7 . Conditioning 11 8 . Recovery 11 9 . Final measurements 11 13 10 . Information to be given in the relevant specification . -4- 68-2-13 O CE1 1983 COMMISSION LECTROTECHNIQUE INTERNATIONALE ESSAIS FONDAMENTAUX CLIMATIQUES ET DE ROBUSTESSE MCANIQUE Deuxime partie: Essais - Essai M: Basse

20、pression atmosphrique PREAMBULE i) Les dcisions ou accords officiels de la CE1 en ce qui concerne les questions techniques, prpars par des Comits elle annule et remplace toutes les ditions antrieures. Un premier projet fut discut lors de la runion tenue Paris en 1980. A la suite de cette runion, un

21、projet, document 5OB(Bureau Centra1)225, fut soumis l?approbation des Comits nationaux suivant la Rgle des Six Mois en aot 1981. Essais climatiques et mcaniques. Des modifications, document SOB(Bureau Central)236, furent soumises l?approbation des Comits nationaux selon la Procdure des Deux Mois en

22、mai 1982. Les Comits nationaux des pays ci-aprs se sont prononcs explicitement en faveur de la publication: Afrique du Sud (Rpublique d?) Allemagne Australie Belgique Canada Chine Core (Rpublique de) Core (Rpublique Dmocratique Populaire de) EgYPte Espagne Etats-Unis d?Amrique Finlande Hongrie Itali

23、e Japon Norvge Pays-Bas Pologne Rpublique Dmocratique Allemande Royaume-Uni Sude Suisse Tchcoslovaquie Autres publications de la CEI cires dans la prsente norme: Publications nos 68-2-40: Essais fondamentaux climatiques et de robustesse mcanique, Deuxime partie: Essais - Essai Z/AM: Essais combins f

24、roid/basse pression atmosphrique. 68-2-41 : Z/BM: Essais combins chaleur sche/basse pression atmosphrique. Autre publication cite: Norme IS0 2533: Atmosphre type. 68-2-13 O IEC 1983 -5- INTERNATIONAL ELECTROTECHNICAL COMMISSION BASIC ENVIRONMENTAL TESTING PROCEDURES Part 2: Tests-Test M: Low air pre

25、ssure FORE WO RD i) The formal decisions or agreements of the IEC on technical matters, prepared by Technical Committees on which all the National Committees having a special interest therein are represented, express, as nearly as possible, an international consensus of opinion on the subjects dealt

26、 with. 2) They have the form of recommendations for international use and they are accepted by the National Committees in 3) In order to promote international unification, the IEC expresses the wish that all National Committees should adopt the text of the IEC recommendation for their national rules

27、 in so far as national conditions will permit. Any divergence between the IEC recommendation and the corresponding national rules should, as far as possible, be clearly indicated in the latter. that sense. PREFACE This standard has been prepared by Sub-committee 50B: Climatic Tests, of IEC Technical

28、 Committee NO. 50: Environmental Testing. It forms the fourth edition of Publication 68-2-13 and supersedes all previous editions. A first draft was discussed at the meeting held in Paris in 1980. As a result of this meeting, a draft, Document SOB(Centra1 Offce)225, was submitted to the National Com

29、mittees for approval under the Six Months Rule in August 1981. Amendments, Document 5OB(Central Office)236, were submitted to the National Committees for approval under the Two Months Procedure in May 1982. The National Committees of the following countries voted explicitly in favour of publication:

30、 Australia Belgium Canada China Czechoslovakia Egypt Finland German Democratic Republic Germany Hungary Italy Japan Korea (Democratic Peoples Korea (Republic of) Netherlands Norway Poland South Africa (Republic of) Spain Sweden Switzerland United Kingdom United States of America Republic of) Other I

31、 E C publications quoted in this standard: Publications Nos. 68-2-40: 68-2-41: Basic Environmental Testing Procedures, Part 2: Tests -Test Z/AM: Combined ColdLow Air Pressure Tests. Test Z/BM: Combined Dry Heat/Low Air Pressure Tests. Other publication quoted: IS0 Standard 2533: Standard Atmosphere.

32、 -6- 68-2-13 O CE1 1983 ESSAIS FONDAMENTAUX CLIMATIQUES ET DE ROBUSTESSE MCANIQUE Deuxime partie: Essais - Essai M: Basse pression atmosphrique 1. Introduction 1.1 Gnralits La prsente norme dcrit les essais de basse pression atmosphrique la temprature Lobjet de cet essai est de dterminer laptitude d

33、es composants ou matriels ou autres du laboratoire. articles tre stocks et utiliss dans des conditions de basse pression atmosphrique. Nore. - I1 convient que les spcimens destins tre stocks, transports ou utiliss dans des conditions combines de haute ou basse temprature et de basse pression atmosph

34、rique, appliques simultanment, soient normalement, lorsque les effets de ia combinaison sont importants (contraintes imposes ou mcanismes de dtrioration), essays selon: - la Publication 68-2-40 de ia CEI: Essais fondamentaux climatiques et de robustesse mcanique, - la Publication 68-2-41 de la CEI:

35、Deuxime partie: Essais - Essai Z/BM: Essais combins chaleur Deuxime partie: Essais - Essai Z/AM: Essais combins froidlbasse pression atmosphrique, et sche/basse pression atmosphrique. 1.2 Document de rfrence Publication 68- 1 : Essais fondamentaux climatiques et de robustesse mcanique, Premire parti

36、e: Gnralits et guide. 2. Description genrale Le spcimen est introduit dans une chambre dessai, la pression de lair dans la chambre est alors diminue jusqu la valeur approprie indique dans la spcification particulire. Ces conditions sont maintenues pendant la dure prescrite. 3. Description de lappare

37、illage dessai La chambre dessai doit tre capable de maintenir les conditions relatives la pression de lair donnes dans larticle 4. Des prcautions doivent tre prises pour viter la contamination de lair par les quipements et les dispositifs annexes et par lair introduit lorsque la pression est ramene

38、la valeur normale. Lorsque des spcimens dissipant de lnergie sont soumis lessai, la spcification particulire peut prescrire des conditions applicables la chambre dessai, conformment lessai Z/BM. 68-2-13 O IEC 1983 -7- BASIC ENVIRONMENTAL TESTING PROCEDURES Part 2: Tests-Test M: Low air pressure 1. I

39、ntroduction 1.1 General This standard deals with low pressure tests at room temperature. The object of this .test is to determine the ability of components, equipment or other articles to be stored, transported or used under low air pressure conditions. Note. - Articles to be stored, transported or

40、used under a simultaneous combination of high or low temperature and low air pressure should, where the combination is important for the stresses imposed on the article or for the failure mechanisms, be tested according to: - IEC Publication 68-2-40: Basic Environmental Testing Procedures, Part 2: T

41、ests -Test Z/AM: - IEC Publication 68-2-41: Part 2: Tests-Test Z/BM: Combined Dry Heat/Low Air Pressure Tests. Combined Cold/Low Air Pressure Tests, and 1.2 Related document Publication 68-1 : Basic Environmental Testing Procedures, Part I : General and Guidance. 2. General description The specimen

42、is introduced into the test chamber, the chamber air pressure is then reduced to the appropriate value specified in the relevant specification. These conditions are maintained for the specified duration. 3. Description of test apparatus The test chamber shall be capable of maintaining the air pressu

43、re conditions given in Clause 4. Care shall be taken to avoid air contamination by ancillary equipment and devices and by the air introduced when pressure is restored to normal. When heat-dissipating specimens are tested, the relevant specification may prescribe requirements applicable to the test c

44、hamber in accordance with Test Z/BM. -8- 68-2-13 O CE1 1983 4. Svrits Les svrits, dfinies par la pression de lair et la dure de lexposition, doivent tre prescrites dans la spcification particulire. Les valeurs doivent tre de prfrence choisies parmi celles qui sont indiques aux paragraphes 4.1 et 4.2

45、 4.1 Pression de lair I1 doit pouvoir tre possible de maintenir dans la chambre les pressions suivantes avec une tolrance de +5% ou de f0,l kPa si cette dernire valeur est plus grande. Pour la svrit 84 kPa, la tolrance doit tre toutefois de +2 kPa. (kPa) 1 2 4 8 15 25 40 55 70 84 (mbar) 10 20 40 80

46、 150 250 400 550 700 840 Altitude approximative au-dessus du niveau de la mer (selon la Norme IS0 2533) (m) 31 200 26 600 22 100 17 600 13 600 10 400 7 200 4 850 3 O00 (Note 2) Noies I. - Pour les altitudes infrieures 1 O00 m, on applique les conditions normales de pression: 86 kPa 106 kPa. 2. - Cet

47、te valeur est utilise lorsquon prescrit dessayer le spcimen la valeur de pression la plus basse des conditions atmosphriques normales de mesure. 4.2 Dure dexposition Les spcifications particulires doivent normalement choisir lune des dures suivantes: - 5 min - 30 min -2h -4h - 16 h 4 5. Prconditionn

48、ement La spcification particulire peut prescrire un prconditionnement. 68-2-13 O IEC 1983 -9- 4. Severities The severities, as indicated by air pressure and duration of exposure, shall be specified in the relevant specification. The values shall preferably be selected from those given in Sub-clauses 4.1 and 4.2. 4.1 Air pressure It shall be possible to maintain the following pressures in the chamber with a tolerance of f5% or kO.1 kPa whichever is the larger. The tolerance on the 84 kPa severity shall be f2 kPa. I I I l Approximate altitude above sea level Air pressure (from IS0 Standard 25

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