IEC_TR_60575-1977_scan.pdf

Validite 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 reconfirmation 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 CElIEC BulletinAnnuaire de la CElIEC YearbookPublie annuellementPublished yearlyCatalogue des publications de la CElCatalogue 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 Electrotechnique 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 publication.specifically 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 electricalelectro-technique;technology;la CEl 417:Symboles graphiques utilisablesIEC 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:SymbolesgraphiquespourIEC 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 CEl 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.一3一CONTENTSPageFOREWORDPREFACE5INTRODUCTION7Clausel.Scope.2.Object.3.Thermal-mechanical performance test94.Mechanical performance test.11APPENDIX A:A1.Background15A2.Insulator mechanics15A3.Notes on the thermal-mechanical performance test.21A4.Notes on the mechanical performance test.:,.,.21A5.Survey of test results.21Table I.Particulars relating to the cap and pin type string insulator units tested.25Table II.Particulars relating to the long rod type string insulator units tested.29Table III.Summary of test results for cap and pin type string insulator units CP 1 to31Table IV.Summary of test results for cap and pin type string insulator units CP 6 to33Table V.Summary of test results for cap and pin type string insulator units CP 14 toCP2135Table VI.Summary of test results for long rod type string insulator units.37Table VII.Number of failures observed below rated load values for cap and pin type stringinsulator units双Table VIII.Number of failures observed below rated load values for long rod type stringinsulator units.,。,.,.,.,.,.,。,.,43A6.Criteria for judging test results.,.43Table IX.Index values Os for cap and pin type string insulator units tested.47Table X.Index values for long rod type string insulator units tested.49A7.Conclusions.51