1、IECNORME?CEIINTERNATIONALE?IECINTERNATIONAL?721-3-6STANDARD?1987AMENDEMENT 1AMENDMENT 11991-06Amendement 1Classification des conditions denvironnementTroisime partie:Classification des groupements des agentsdenvironnement et de leurs svritsEnvironnement des naviresAmendment 1Classification of enviro
2、nmental conditionsPart 3:Classification of groups of environmentalparameters and their severitiesShip environment CEI 1991 Droits de reproduction rservs Copyright all rights reservedBureau Central de la Commission Electrotechnique Internationale 3,rue de Varemb Genve,SuisseCommission Electrotechniqu
3、e InternationaleInternational Electrotechnical CommissionMew,ayHapoaHaa 3neKrpoTexHHYecKaa HoMHCCHaCODE PRIXPRICE CODEPour prix,voir catalogue en vigueurFor price,see outrent catalogueBLICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.DI
4、S75(BC)63Rapport de vote75(BC)671,81,61,41,21,00,80,60,40,2-2-?721-3-6 amend.1 CEIPRFACELe prsent amendement a t tabli par le Comit dEtudes n 75 de la CEI:Classificationdes conditions denvironnement.Le texte de cet amendement est issu des documents suivants:Le rapport de vote indiqu dans le tableau
5、ci-dessus donne toute information sur le voteayant abouti lapprobation de cet amendement.Page 18Remplacer la figure 1 par la suivante:5?10?20?50?100?200?500?1 000 2 000Frquence HzCFI 488/91Exemple de dures dune impulsion semi-sinusoidale:Spectre type I:dure 11 msSpectre type II:dure 6 msSpectre type
6、 III:dure 2,3 msFigure 1-Exemples de spectres types de rponses aux chocs(spectres de rponses aux chocs maximax de premier ordre).Les explications se trouvent la note 6 relative autableau I de la CEI 721-1(1990)LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED
7、 BY BOOK SUPPLY BUREAU.DIS75(CO)63Report on Voting75(CO)670,2Q.YlE 0,8EEXm0,60,42 000Frequency HzfEC 488!9!50201002001 000500721-3-6 Amend.1 IEC?-3-PREFACEThis amendment has been prepared by IEC Technical Committee No.75:Classification ofenvironmental conditions.The text of this amendment is based o
8、n the following documents:Full information on the voting for the approval of this amendment can be found in theVoting Report indicated in the above table.Page 19Replace figure 1 by the following:Example of durations for half-sine pulse:Spectrum type I:duration 11 msSpectrum type II:duration 6 msSpec
9、trum type III:duration 2,3 msFigure 1-Model shock response spectra(first order maximax shock response spectra).For explanation see note 6 relating to table Iof IEC 721-1(1990)Imprim en Suisse?Printed in SwitzerlandLICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.ICS 19.040Typeset and printed by the IEC Central OfficeGENEVA,SWITZERLANDLICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.
