IEC_60721-3-6-1987_amd2-1996.pdf

NORMEINTERNATIONALECEIIECINTERNATIONALSTANDARD721-3-61987AMENDEMENT 2AMENDMENT 21996-11 Commission Electrotechnique Internationale International Electrotechnical CommissionCODE PRIXPRICE CODEPour prix,voir catalogue en vigueurFor price,see current catalogueDAmendement 2Classification des conditions denvironnement Partie 3:Classification des groupements des agentsdenvironnement et de leurs svrits Section 6:Environnement des naviresAmendment 2Classification of environmental conditions Part 3:Classification of groups of environmentalparameters and their severitiesSection 6:Ship environment CEI 1996 Droits de reproduction rservs Copyright-all rights reservedBureau central de la Commission Electrotechnique Internationale 3,rue de Varemb Genve,SuisseLICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 721-3-6 amend.2 CEI:1996AVANT-PROPOSLe prsent amendement a t tabli par le comit dtudes 75 de la CEI:Classification desconditions denvironnement.Le texte de cet amendement est issu des documents suivants:FDISRapport de vote75/282/FDIS75/291/RVD Le rapport de vote indiqu dans le tableau ci-dessus donne toute information sur le vote ayantabouti lapprobation de cet amendement._Page 84 Classification des groupements des agents denvironnement et de leurs svritsAjouter,aprs le premier alina,le nouvel alin suivant:Les conditions climatiques en zones tropicales,telles quelles sont spcifies dans lescatgories 6K6 et 6K7,sont expliques lannexe B.Page 10Tableau I Classification des conditions climatiquesAjouter les colonnes 6K6 et 6K7(les colonnes Agent denvironnement et Unit sontrptes pour information uniquement):Agent denvironnementUnitCatgorie6K6 6)6K7 6)a)Basse temprature de lairC+520b)Basse temprature de leauC+15+15c)Haute temprature de lairC+55+70d)Haute temprature de surface 4)C+70+70e)Haute temprature de leauC+35+35f)Variation progressive de temprature,air/airCC/min+5/+40320/+403g)Variation de temprature,air/eauC+40/+15+40/+15h)Humidit non combine avec desvariations rapides de temprature%C95+3595+45i)Humidit combine avec des variationsrapides de temprature,air/air humiditrelative leve%C95+5/309520/+35j)Humidit combine avec des variationsrapides de temprature,air/air teneur eneau leve 5)g/m3C60+55/+1560+70/+15k)Faible humidit relative%C10+3010+30l)Mouvement de lair du milieu ambiant,airm/s5050m)Prcipitations,pluiemm/min1515n)Rayonnement solaireW/m211201120o)Rayonnement de chaleurW/m212001200p)Eau dautre origine que la pluiem/s1010q)MouillureAucuneSurfaces mouillesAjouter la note 6:6)Dautres informations sur les catgories 6K6(tropical humide)et 6K7(tropical sec)sont donnes lannexe B.LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.721-3-6 Amend.2 IEC:1996 3 FOREWORDThis amendment has been prepared by IEC technical committee 75:Classification of environ-mental conditions.The text of this amendement is based on the following documents:FDISReport on voting75/282/FDIS75/291/RVDFull information on the voting for the approval of this amendment can be found in the report onvoting indicated in the above table._Page 94 Classification of groups of environmental parameters and their severitiesAdd,after the first paragraph,the following new paragraph:Climatic conditions in tropical areas as specified in classes 6K6 and 6K7 are explained in annexB.Page 11Table I Classification of climatic conditionsAdd columns 6K6 and 6K7 as follows(columns“Environmental parameter”and“Unit”arerepeated for information only):Environmental parameterUnitClass6K6 6)6K7 6)a)Low temperature,airC+520b)Low temperature,waterC+15+15c)High temperature,airC+55+70d)High temperature,surfaces 4)C+70+70e)High temperature,waterC+35+35f)Gradual change of temperature,air/airCC/min+5/+40320/+403g)Change of temperature,air/waterC+40/+15+40/+15h)Humidity,not combined with rapidtemperature changes%C95+3595+45i)Humidity,combined with rapidtemperature changes,air/air at high relativehumidities%C95+5/309520/+35j)Humidity,combined with rapidtemperature changes,air/air at high watercontent 5)g/m3C60+55/+1560+70/+15k)Low relative humidity%C10+3010+30l)Movement of surrounding medium,airm/s5050m)Precipitation,rainmm/min1515n)Radiation,solarW/m211201120o)Radiation,heatW/m212001200p)Water from sources other than rainm/s1010q)WetnessNoneWet surfacesAdd note 6:6)Further information on classes 6K6(tropical damp)and 6K7(tropical dry)is given in annex B.LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.4 721-3-6 amend.2 CEI:1996Page 20A.2 K Conditions climatiquesAjouter,la page 22,la description suivante des nouvelles catgories,aprs la description dela catgorie 6K5:6K6La catgorie 6K6 reprsente les conditions couvertes par des types de climat lairlibre chaud humide et chaud humide constant(type de climat tropical humide,dansdes zones ayant des forts tropicales humides).6K7La catgorie 6K7 reprsente les cond