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NORMECEIINTERNATIONALEIECINTERNATIONAL68-3-3STANDARDPremiere ditionFirst edition1991-02Essais denvironnementTroisieme partie:GuideMethodes dessais sismiques applicablesaux materielsEnvironmental testingPart 3:GuidanceSeismic test methods for equipmentsIECNumero de referenceReference numberCEI/1EC68-3-3:1991Validite de la presente publicationValidity of this publicationLe contenu technique des publications de la CEl est cons-The technical content of IEC publications is kept undertamment revu par la CEl afin quil reflete letat actuel deconstant review by the IEC,thus ensuring that the contentla technique.reflects current technology.Des renseignements relatifs a la date de reconfirmation deInformation relating to the date of the reconfimmation of thela publication sont disponibles aupres du Bureau Central depublication is available from the IEC Central Office.la CEl.Les renseignements relatifs a ces revisions,a letablis.Information on the revision work,the issue of revisedsement des editions revisees et aux amendements peuventeditions and amendments may be obtained from IECetre obtenus aupres des Comites nationaux de la CEl etNational Committees and from the following IECdans les documents ci-dessous:sources:Bulletin de la CEI。IEC BulletinAnnuaire de la CElIEC YearbookPublie annuellementPublished yearlyCatalogue des publications de la CEICatalogue of IEC publicationsPublie annuellement et mis a jour regulierementPublished yearly with regular updatesTerminologieTerminologyEn ce qui concerne la terminologie generale,le lecteur seFor general terminology,readers are referred to IEC 50:reportera a la CEl 50:Vocabulaire Electrotechnigue Inter-International Electrotechnical Vocabulary(IEV),which isnationa/(VEl),qui se presente sous forme de chapitresissued in the form of separate chapters each dealingsepares traitant chacun dun sujet defini.Des detailswith a specific field.Full details of the IEV will becomplets sur le VEI peuvent etre obtenus sur demande.supplied on request.See also the IEC MultilingualVoir galement le dictionnaire multilingue de la CEl.Dictionary.Les termes et definitions figurant dans la presente publi-The terms and definitions contained in the present publi-cation ont ete soit tires du VEl,soit specifiquementcation have either been taken from the IEV or have beenapprouves aux fins de cette publicationspecifically approved for the purpose of this publication.Symboles graphiques et litterauxGraphical and letter symbolsPour les symboles graphiques,les symboles litteraux et lesFor graphical symbols,and letter symbols and signssignes dusage general approuves par la CEl,le lecteurapproved by the IEC for general use,readers are referred toconsultera:publications:la CEl 27:Symboles litteraux a utiliser enIEC 27:Letter symbols to be used in electrical6lectro-technique;technology;la CEl 417:Symboles graphiques utilisables-IEC 417:Graphical symbols for use onsur le materiel.Index,releve et compilation desequipment.Index,survey and compilation of thefeuilles individuelles;single sheets;la CEl 617:Symboles graphiques pour schemas,IEC 617:Graphical symbols for diagrams;et pour les appareils electromedicaux,and for medical electrical equipment,la CEl 878:Symboles graphiques pourIEC 878:Graphical symbols for electromedicalequipements electriques en pratique medicale.equipment in medical practice.Les symboles et signes contenus dans la presente publi-The symbols and signs contained in the present publicationcation ont ete soit tires de la CEl 27,de la CEl 417,de lahave either been taken from IEC 27,IEC 417,IEC 617CEI 617 et/ou de la CEI 878,soit specifiquement approuvesand/or IEC 878,or have been specifically approved for theaux fins de cette publication.purpose of this publication.Publications de la CEI etablies par leIEC publications prepared by the samememe comite detudestechnical committeeLattention du lecteur est attiree sur les listes figurant a la finThe attention of readers is drawn to the end pages of thisde cette publication,qui enumerent les publications de lapublication which list the IEC publications issued by theCEl preparees par le comite detudes qui a etabli latechnical committee which has prepared the presentpresente publication.publication.NORMECEIINTERNATIONALEIECINTERNATIONAL68-3-3STANDARDPremiere 6ditionFirst edition1991-02Essais denvironnementTroisieme partie:GuideMethodes dessais sismiques applicablesaux materielsEnvironmental testingPart 3:GuidanceSeismic test methods for equipmentsCE1991Droits de reproduction reserves-Copyright-all rights reservedAucune partie de cette publication ne peut etre reproduite niNo part of this publication may be reproduced or utilizedutilisee sous quelque forme que ce soit et par aucun procede.in any form or by any means,electronic or mechanicalelectronique ou mecanique.y compris la photocopie et lesincluding photocopying and microfilm,without permissionmicrofilms,sans faccord crit de rditeur.in writing from the publisherBureau central de la Commission Electrotechnique Internationale 3.rue de Varembe Geneve SuisseCommission Electrotechnique Internationale CODE PRIXInternational Electrotechnical CommissionPRICE CODEX三Pour prix,voir catalogue en vigueuFor price,see current catalogu-2-68-3-3CEISOMMAIREPagesPREAMBULE4PREFACEINTRODUCTION.8SECTION UN-GENERALITESArticles10bjetPGnralits103Definitions10又Elements relatifs a la qualification.185Procedures dessai.20SECTION DEUX-CLASSE SISMIQUE GENERALE6Epreuve24Essai conventionnel a amplitude normalisee.26PEssai a amplitude calculee289Parametres dessai,。:10Modalites dessai.,SECTION TROIS CLASSE SISMIQUE SPECIFIQUE11Epreuve:4012Choix des ondes dessais40130 ndes dessai4414Conditions dessai.501Essai de type monoaxial et polyaxial.60FIGURES66ANNEXE A Diagrammes pour le choix de Iessai.7468-3-3IEC-3-CONTENTSPageFOREWORD5PREFACE5INTRODUCTION9SECTION ONE-GENERALClause1 Object.92 General considerations.13 Definitions.14 Qualification considerations.195 Testing procedures.21SECTION TWO-GENERAL SEISMIC CLASS6 Conditioning.7 Standard amplitude conventional test method.8 Calculated amplitude test method.299 Testing parameters.3510 Testing procedures.37SECTION THREE-SPECIFIC SEISMIC CLASS11 Conditioning.4112 Test wave selection.4113 Test waves.4514 Testing conditions.5115 Single and multiaxis testing.61FIGURES.66APPENDIX A-Flow charts for test selection.75