IEC_255_21_3_1993.pdf

I E C 255 PT*ZL-3 93 m 4844893 0547133 719 m NORME INTERNATIONALE INTERNATIONAL STANDARD CE1 IEC 255-21-3 Premire dition First edition 1993-09 Relais lectriques-Partie 21:Essais de vibrations,de chocs,de secousses et de tenue aux sismes applicables aux relais de mesure et aux dispositifs de protection-Section 3:Essais de tenue aux sismes Electrical relays-Part 21:Vibration,shock,bump and seismic tests on measuring relays and protection equipment-Section 3:Seismic tests Numro de rfrence Reference number CEIIIEC 255-21-3:1993 Copyright International Electrotechnical Commission Provided by IHS under license with IECNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I E C 255 PT*21-3 93 4844893 0547114 b55 Rvision de la prsente publication Le contenu technique des publications de la C E I est cons-tamment revu par la Commission afii dassurer quil reflete bien ltat actuel de la technique.L e s renseignements relatifs ce travail de rvision,ltablissement des ditions fivises et aux mises jour peuvent tre obtenus auprs des Comites nationaux de la C E I et en consultant les documents Ci-dessous:Bulletin de la CE I Annuaire de la C E I Catalogue des publications de la C E I Publi annuellement Terminologie En ce qui concerne la terminologie gnrale,le lecteur se reportera la Publication 50 de la C E I:Vocabulaire Electro-technique International(VEI),qui est tablie sous forme de chapitres spars traitant chacun dun sujet dfini,lIndex gnral tant publi sparment Des dtails complets sur le VEI peuvent tre obtenus sur demande.Les termes et dfinitions figurant dans la prsente publication ont te soit repris du VEI.soit spkiiiquement approuvs aux fins de cette publication.Symboles graphiques et littraux Pour les symboles graphiques,symboles littkraux et signes dusage gnrai approuvs par la C E I,le lecteur consultera:-la Publication 27 de la C E I:Symboles littraux utiliser en lectrotechnique;-la Publication 617 de la C E I:Symboles graphiques pour schmas.Les symboles et signes contenus dans la prsente publication ont t soit repris des Publications 27 ou 617 de la C E I,soit spcifiquement approuvs aux fins de cette publication.Publications de la C E I tablies par le mme Comit dEtudes Lattention du lecteur est attire SUT le deuxime feuillet de ia couverture,qui numre les publications de la CE1 prpares par le Comit dEtudes qui a tabli la prsente publication.Revision of this publication The technical content of I E C publications is kept under con-stant review by the I E C,thus ensuring that the content reflects current technology.Information on the work of revision,the issue of revised edi-tions and amendment she&may be obtained from IEC National Committees and from the following I E C sources:IECBulktin IECYearbook Catalogue o f I E C Publications Published yearly Terminology For general terminology,readers are referred to I E C Publi-cation 50:International Electrotechnical Vocabulary(IEV),which is issued in the form of separate chapters each dealing with a specific field,the General Index being published as a separate booklet.Fuil details of the IEV will be supplied on request.The terms and defmitions contained in the present publication have either been taken from the E V or have been specrfically approved for the.purpose of this publication.Graphical and letter symbols For graphical symbols.and letter symbols and signs approved by the I E C for general use,readers are referred to:-I E C Publication 27:Letter symbols to be used in electrical technology;-I E C Publication 617:Graphical symbols for diagrams.The symbols and signs contained in the present publication have either been taken from IEC Publications 27 or 617,or have been specifically approved f o r the purpose of this publication.I E C publications prepared by the same Technical Committee The attention of readers is drawn t o the back cover,which lists IEC publications issued by the Technical Committee which has prepared the present publication.Copyright International Electrotechnical Commission Provided by IHS under license with IECNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-IEC 255 PTt2L-3 93 4844891 0547115 591 NORME CE1 INTERNATIONALE IEC INTERNATIONAL STANDARD 255-21-3 Premire dition First edition 1993-09 Relais lectriques-Partie 21:Essais de vibrations,de chocs,de secousses et de tenue aux sismes applicables aux relais de mesure et aux dispositifs de protection-Section 3:Essais de tenue aux sismes Electrical relays-Part 21:Vibration,shock,bump and seismic tests on measuring relays and protection equipment-Section 3:Seismic tests CE1 1993 Droits de reproduction rservs-Copyright-all rights reserved Auaine parts de M e publicatm ne peul tre reprodude ni UtiCSBe sous quelque forme que soi1 e 4 par amun pre d.ledmnqw,ou mcanique.y corrpm i a phdocope et les mrofihs.sans I accord 6 a d de I ddileur No pad of this pubkatlm mpy bs rspmduced o r UtlQed in any form or by any means.elecbonw:or mechanml,nc