IEC_60269-3-1-1994_scan.pdf

NORMECEIINTERNATIONALEIECINTERNATIONAL269-3-1STANDARDPremiere editionFirst edition1994-08Fusibles basse tension-Partie 3-1:Regles supplementaires pour les fusibles destinesa tre utiliss par des personnes non qualifies(fusibles pour usages essentiellement domestiqueset analogues)-Sections I a IVLow-voltage fuses-Part 3-1:Supplementary requirements for fuses for use byunskilled persons(fuses mainly for household andsimilar applications)-Sections I to IVIECNumero de referenceReference numberCEI/IEC269-3-1:1994Validite 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 CEI afin quil reflete Ietat actuel deconstant review by the IEC,thus ensuring that the contentla techniquereflecis current technology.Des renseignements relatifs a la date de reconfirmation deInformation relating to the date of the reconfirmation ofla publication sont disponibles aupres du Bureau Centralthe publication is available from the IEC Central Office.de la CEI.Les renseignements relatifs a ces revisions.a lctablis-Information on the revision work.the issue of revisedsement des editions revisees et aux amendemenis peuventeditions and amendments may be obtained from IECetre obtenus aupres des Comites nationaux de la CEl etNational Committees and from the following IEC sources:dans les documents ci-dessous:Bulletin de la CElIEC BulletinAnnuaire de la CEIIEC YearbookPublie annuellementPuhlished yearlyCatalogue des pmblicatiuns de la CElCatalugue 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 CEI 50:Vocubulaire Electrotechnique InterInternutional Electrotechnical Vocabulary(IEV),whichnational(VEI).qui se presente sous forme de chapitresis issued in the form of separate chapters each dealingsepares traitant chacua dun sujet defini.Des detailswith a specific field.Full details of the IEV will becomplets sur le VEI pevent etre obtenus sur Jemandesupphied on request.See also the IEC MultilingualVoir egalement le dictionmare multilingue de la CElDictionaryLes termes et definitioas frgurant dans la prevenie puhlThe icim and definitions contained in the present publi-cation ont cte soit tires da VEl.soit specifiquementcation have either heen taken from the IEV or have beenapprouves aux fins de cene publicalionspeciticully 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 referredconsultera:to publications:la CEI 27:Syniboles litteraux a utiliser en electro-IEC 27:Letter symbols to be used in electricaltechnique;technology:la CEI 417:Symboles gruphiques utilisubles sur leIEC 417:Gruphical synibols for use on equip-materiel.Index.releve et compilution des feuillesment.Index.survey und compilation of the singleindividuelles:sheets:la CEI 617:Symboles gruphiques pour schemus:1EC 617:(ruphicul symibols for diagrams;et pour les appareils electromedicaux.and for medical electrical equipment.la CEI 878:Symboles gruphiques pour equipemensIEC 878:Graphicul symibols for electromedicalelectriques en prutigue mediculeeyuipment in medical practice.Les symboles et signes contenus dans la presente publi-The symbols and signs contained in the present publi-cation ont ete soit tires de la CEI 27.de la CEl 417.decation have either bee taken from IEC 27,IEC 417la CEI 617 et/ou de la CEl 878.soit specifiquementIEC 617 and/or IEC 878.or have been specifically appro-approuves aux fins de cette publication.ved for the purpose of this publication.Publications de la CEI etablies par le memeIEC publications prepared by the samecomite detudestechnical committeeLattention du lecteur est attiree sur les listes figurant a laThe attention of readers is drawn to the end pages of thisfin de cette publication qui enumerent les publications depublication which list the IEC publications issued byla CEI preparees par ke comite dctudes qui a ctabli lathe technical committee which has prepared the presentpresente publication.publication.269-3-1IEC:1994-3-CONTENTSPageFOREWORD15EXPLANATORY NOTE19Clause1General191.0Normative references21SECTION I-D-TYPE FUSES1.1Scope5Characteristics of fuses5.2Rated voltage5.3.1Rated current of the fuse-link333335.3.2Rated current of the fuse-holder5.5Rated power dissipation of a fuse-link and rated power acceptanceof a fuse-holder5.6Limits of time-current characteristics5.6.1Time-current characteristics,time-current zones and overload curves.5.6.2Conventional times and currents5.6.3Gates5.7Breaking range and breaking capacity5.7.2Rated breaking capacity6Markings7Standard conditions for construction7.1Mechanical design.7.1.2Connections including terminals7.1.3Fuse-contacts7.1.4Non-interchangeability7.1.5Construction of a fuse-base7.1.6Construction of a fuse-carrier.2333222222229992237.1.7Construction of a fuse-link7.1.8Construction of a gauge-piece.7.2Insulating properties7.3Temperature rise,power dissipation of the fuse-link and power acceptanceof the fuse-holder.337.7I2t characteristics37.7.1Pre-arcing It values337.7.2Operating It values337.8Overcurrent discrimination of gG fuse-links7.9Protection against electric shock8Tests8.1.5.1Complete tests8.1.5.2Testing of fuse-links of a homogeneous series.8.2Verification of insulating properties8.2.1Arrangement of the fuse-holder.8.2.6Creepage distances,clearances and distances through sealing compound35555333338.2.6.1Test method8.2.6.2Acceptability of test results