1、NORME?CEIINTERNATIONALE?IECINTERNATIONAL?839-1-3STAN DARDPremire ditionFirst edition1988Systmes dalarmePremire partie:Prescriptions gnralesSection trois Essais climatiques et mcaniquesAlarm systemsPart 1:General requirementsSection three Environmental testingIECNumro de rfrenceReference numberCEI/IE
2、C 839-1-3:1988LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.Validit de la prsente publicationLe contenu technique des publications de la CEI est cons-tamment revu par la CEI afin quil reflte ltat actuel dela technique.Des renseigneme
3、nts relatifs la date de reconfirmation dela publication sont disponibles auprs du Bureau Central dela CEI.Les renseignements relatifs ces rvisions,ltablis-sement des ditions rvises et aux amendements peuventtre obtenus auprs des Comits nationaux de la CEI etdans les documents ci-dessous:Bulletin de
4、la CEIAnnuaire de la CEIPubli annuellementCatalogue des publications de la CEIPubli annuellement et mis jour rgulirementTerminologieEn ce qui concerne la terminologie gnrale,le lecteur sereportera la CEI 50:Vocabulaire Electrotechnique Inter-national(VEI),qui se prsente sous forme de chapitresspars
5、traitant chacun dun sujet dfini.Des dtailscomplets sur le VEI peuvent tre obtenus sur demande.Voir galement le dictionnaire multilingue de la CEI.Les termes et dfinitions figurant dans la prsente publi-cation ont t soit tirs du VEI,soit spcifiquementapprouvs aux fins de cette publication.Symboles gr
6、aphiques et littrauxPour les symboles graphiques,les symboles littraux et lessignes dusage gnral approuvs par la CEI,le lecteurconsultera:la CEI 27:Symboles littraux utiliser enlectro-technique;la CEI 417:Symboles graphiques utilisablessur le matriel.Index,relev et compilation desfeuilles individuel
7、les;la CEI 617:Symboles graphiques pour schmas;et pour les appareils lectromdicaux,la CEI 878:Symboles graphiques pourquipements lectriques en pratique mdicale.Les symboles et signes contenus dans la prsente publi-cation ont t soit tirs de la CEI 27,de la CEI 417,de laCEI 617 et/ou de la CEI 878,soi
8、t spcifiquement approuvsaux fins de cette publication.Publications de la CEI tablies par lemme comit dtudesLattention du lecteur est attire sur les listes figurant la finde cette publication,qui numrent les publications de laCEI prpares par le comit dtudes qui a tabli laprsente publication.Validity
9、of this publicationThe technical content of IEC publications is kept underconstant review by the IEC,thus ensuring that the contentreflects current technology.Information relating to the date of the reconfirmation of thepublication is available from the IEC Central Office.Information on the revision
10、 work,the issue of revisededitions and amendments may be obtained from IECNational Committees and from the following IECsources:IEC BulletinIEC YearbookPublished yearlyCatalogue of IEC publicationsPublished yearly with regular updatesTerminologyFor general terminology,readers are referred to IEC 50:
11、International Electrotechnical Vocabulary(IEV),which isissued in the form of separate chapters each dealingwith a specific field.Full details of the IEV will besupplied on request.See also the IEC MultilingualDictionary.The terms and definitions contained in the present publi-cation have either been
12、 taken from the IEV or have beenspecifically approved for the purpose of this publication.Graphical and letter symbolsFor graphical symbols,and letter symbols and signsapproved by the IEC for general use,readers are referred topublications:I EC 27:Letter symbols to be used in electricaltechnology;IE
13、C 417:Graphical symbols for use onequipment.Index,survey and compilation of thesingle sheets;IEC 617:Graphical symbols for diagrams;and for medical electrical equipment,IEC 878:Graphical symbols for electromedicalequipment in medical practice.The symbols and signs contained in the present publicatio
14、nhave either been taken from IEC 27,IEC 417,IEC 617and/or IEC 878,or have been specifically approved for thepurpose of this publication.IEC publications prepared by the sametechnical committeeThe attention of readers is drawn to the end pages of thispublication which list the IEC publications issued
15、 by thetechnical committee which has prepared the presentpublication.LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.NORME?CEIINTERNATIONALE?IECINTERNATIONAL?839-1-3STAN DARDPremire ditionFirst edition1988Systmes dalarmePremire partie:
16、Prescriptions gnralesSection trois Essais climatiques et mcaniquesAlarm systemsPart 1:General requirementsSection three Environmental testing CEI 1988 Droits de reproduction rservs Copyright-all rights reservedAucune partie de cette publication ne peut tre reproduite ni?No part of this publication may be reproduced or utilizedutilise sous quelque forme que ce soit et par aucun procd,?in any form or by any means,electronic or mechanical,lectronique ou mcanique,y compris la photocopie et les?inclu