ANSI/NFPA 68-1994 爆燃过程的通风指南
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【英文标准名称】:GuideforVentingofDeflagrations
【原文标准名称】:爆燃过程的通风指南
【标准号】:ANSI/NFPA68-1994
【标准状态】:作废
【国别】:美国
【发布日期】:1994
【实施或试行日期】:
【发布单位】:美国国家标准学会(ANSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:通气;灰尘暴炸;安全工程
【英文主题词】:safetyengineering;dustexplosions;aeration
【摘要】:
【中国标准分类号】:C80
【国际标准分类号】:13_230
【页数】:
【正文语种】:英语
【原文标准名称】:爆燃过程的通风指南
【标准号】:ANSI/NFPA68-1994
【标准状态】:作废
【国别】:美国
【发布日期】:1994
【实施或试行日期】:
【发布单位】:美国国家标准学会(ANSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:通气;灰尘暴炸;安全工程
【英文主题词】:safetyengineering;dustexplosions;aeration
【摘要】:
【中国标准分类号】:C80
【国际标准分类号】:13_230
【页数】:
【正文语种】:英语
下载地址: 点击此处下载
【英文标准名称】:PM-coresmadeofmagneticoxidesandassociatedparts-Dimensions
【原文标准名称】:磁氧化物和相关零部件制的PM芯.尺寸
【标准号】:BSEN61247-1997
【标准状态】:现行
【国别】:英国
【发布日期】:1997-08-15
【实施或试行日期】:1997-08-15
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:电力变压器;氧化物;互换性;磁路;变压器;电气元件;尺寸;尺寸;名称与符号;位置;磁性器件;磁芯;插脚;印制电路;永久磁铁
【英文主题词】:Accessories;Bobbins;Dimensions;Electricalengineering;Magnetic;Magneticcomponents;Magneticcores;Oxides;Pins(nails);PM-cores;Potcores;Printedwiring
【摘要】:ThisInternationalStandardspecifiesthedimensionsthatareofimportanceformechanicalinterchangeabilityforapreferredrangeofPM-coresmadeofmagneticoxides,themaindimensionsforcoilformerstobeusedwiththesecoresandthelocationsoftheirpinsonamodularprintedwiringgridinrelationtothebaseoutlinesofcores.Italsospecifiestheeffectiveparametervaluestobeusedincalculationsinvolvingthesecores.TheuseofderivedstandardswhichgiveamoredetailedspecificationofcomponentpartswhilststillpermittingcompliancewiththisstandardisdiscussedinannexA.PM-coresaresocalledbecausetheyarederivedfrompot-coresandhavecutoutspermittingtheuseofcoilformerscontainingterminalpinsformountingonamodularprintedwiringboard.Theyaremainlyintendedforuseinpowerapplicationssuchasswitchedmodepowersupplies(SMPS),pulsepowertransformersandbroadbandtransformers.Fortheseapplicationsthepot-coreshapegivestheadvantage,comparedwithothershapes,ofarelativelylargecross-sectionwithcorrespondinglyhighmagneticflux,whichinturnpermitswindingsoffewerturnsforagivenpower,withtheassociatedbenefitsoflowleakageinductanceandself-capacitance.Thesecoresalsoprovidegoodshielding,easymountingandenablepreciseair-gapstobeground.PM-coresarealsoofinterestfornewSMPStechniquesinvolvinghigherpowersatfrequenciesgreaterthan50kHz,since,becausetheypossessrelativelysmallopenings,thestrayfieldlosseswhichincreasewithfrequencyaremuchsmallerthanwithanyE-coretype.ThepresentrangeofPM-corescontainsfivesizes,fourofwhicharesuitableformountingdirectlyonaprintedwiringboardwithasimpleU-boltmounting.Thelocationsofthemountingpinsforthesecoresandtheirnumberingarespecified:theyareatspacingsoftwomodulesandtheirpossiblenumbervariesfrom14to20.Thelargestcoreistooheavyformountingonaprintedwiringboard,andneitherthenumberorlocationofitsterminalpins,whichareusuallylocatedwithinthecut-outofthecore,arespecified.
【中国标准分类号】:L19
【国际标准分类号】:29_100_10
【页数】:18P;A4
【正文语种】:英语
【英文标准名称】:SpecificationforPropylenePlasticInjectionandExtrusionMaterialsUsingISOProtocolandMethodology
【原文标准名称】:采用ISO协议和方法的聚酯塑料注入和挤压材料规范
【标准号】:ANSI/ASTMD5857-2002
【标准状态】:现行
【国别】:美国
【发布日期】:2002
【实施或试行日期】:2002-01-10
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:plasticsandrubbertechnology;polypropylene;materialstesting;injectionmoulding;polymericmaterials
【摘要】:Thisspecificationcoverspolypropylenematerialssuitableforinjectionmoldingandextrusion.Polymersconsistofpolypropylenehomopolymers,polypropylenecopolymers,andpolypropylene-elastomercompoundsproducedwithorwithouttheadditionofimpactmodifiers(ethylene-propylenerubber,polyisobutylenerubber,andbutylrubber,andsoforth),colorants,stabilizers,lubricants,fillers,orreinforcements.Thisspecificationallowsfortheuseofthosepolypropylenematerialsthatcanberecycled,reconstituted,andreground,providedthatthefollowingconditionsaremet:TherequirementsasstatedinthisspecificationandotherISOguidelinespertainingtothesetypesofmaterialsaremet,andThematerialhasnotbeenmodifiedinanywaytoalteritsconformancetofoodcontactregulationsorsimilarrequirements.Theproportionsofrecycled,reconstituted,andregrindmaterialused,aswellasthenatureandtheamountofanycontaminant,cannotbepracticallycoveredinthisspecification.Itistheresponsibilityofthesupplierandbuyerofrecycled,reconstituted,andregrindmaterialstoensurecompliance.Thepropertiesincludedinthisclassificationsystemarethoserequiredtoidentifythecompositionscovered.Theremaybeotherrequirementsnecessarytoidentifyparticularcharacteristicsimportanttospecializedapplications.ThesemaybespecifiedbyusingthesuffixesasgiveninSectionandthoseinClassificationSystemD4000.Thisclassificationsystemandspecificationareintendedtoprovideameansofcallingoutpolypropylenematerialsusedinthefabricationofenditemsorparts.Itisnotintendedfortheselectionofmaterials.Materialselectionshouldbemadebythosehavingexpertiseintheplasticfieldaftercarefulconsiderationofthedesignandtheperformancerequiredofthepart,theenvironmenttowhichitwillbeexposed,thefabricationprocesstobeemployed,thecostsinvolved,andtheinherentpropertiesofthematerialotherthanthosecoveredbythisspecification.ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thefollowingprecautionarycaveatpertainsonlytothetestmethodsportion,Section,ofthisspecification:Thisspecificationdoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisspecificationtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note1ThisspecificationissimilartobothISO1873-1andISO1873-2,buttodifferentdegrees.ThisspecificationresemblesISO1873-1intitleonly.Thecontentissignificantlydifferent.ThisspecificationandISO1873-2differinapproachordetail;dataobtainedusingeitheraretechnicallyequivalent.
【中国标准分类号】:G32
【国际标准分类号】:83_080_01
【页数】:
【正文语种】:英语
【原文标准名称】:磁氧化物和相关零部件制的PM芯.尺寸
【标准号】:BSEN61247-1997
【标准状态】:现行
【国别】:英国
【发布日期】:1997-08-15
【实施或试行日期】:1997-08-15
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:电力变压器;氧化物;互换性;磁路;变压器;电气元件;尺寸;尺寸;名称与符号;位置;磁性器件;磁芯;插脚;印制电路;永久磁铁
【英文主题词】:Accessories;Bobbins;Dimensions;Electricalengineering;Magnetic;Magneticcomponents;Magneticcores;Oxides;Pins(nails);PM-cores;Potcores;Printedwiring
【摘要】:ThisInternationalStandardspecifiesthedimensionsthatareofimportanceformechanicalinterchangeabilityforapreferredrangeofPM-coresmadeofmagneticoxides,themaindimensionsforcoilformerstobeusedwiththesecoresandthelocationsoftheirpinsonamodularprintedwiringgridinrelationtothebaseoutlinesofcores.Italsospecifiestheeffectiveparametervaluestobeusedincalculationsinvolvingthesecores.TheuseofderivedstandardswhichgiveamoredetailedspecificationofcomponentpartswhilststillpermittingcompliancewiththisstandardisdiscussedinannexA.PM-coresaresocalledbecausetheyarederivedfrompot-coresandhavecutoutspermittingtheuseofcoilformerscontainingterminalpinsformountingonamodularprintedwiringboard.Theyaremainlyintendedforuseinpowerapplicationssuchasswitchedmodepowersupplies(SMPS),pulsepowertransformersandbroadbandtransformers.Fortheseapplicationsthepot-coreshapegivestheadvantage,comparedwithothershapes,ofarelativelylargecross-sectionwithcorrespondinglyhighmagneticflux,whichinturnpermitswindingsoffewerturnsforagivenpower,withtheassociatedbenefitsoflowleakageinductanceandself-capacitance.Thesecoresalsoprovidegoodshielding,easymountingandenablepreciseair-gapstobeground.PM-coresarealsoofinterestfornewSMPStechniquesinvolvinghigherpowersatfrequenciesgreaterthan50kHz,since,becausetheypossessrelativelysmallopenings,thestrayfieldlosseswhichincreasewithfrequencyaremuchsmallerthanwithanyE-coretype.ThepresentrangeofPM-corescontainsfivesizes,fourofwhicharesuitableformountingdirectlyonaprintedwiringboardwithasimpleU-boltmounting.Thelocationsofthemountingpinsforthesecoresandtheirnumberingarespecified:theyareatspacingsoftwomodulesandtheirpossiblenumbervariesfrom14to20.Thelargestcoreistooheavyformountingonaprintedwiringboard,andneitherthenumberorlocationofitsterminalpins,whichareusuallylocatedwithinthecut-outofthecore,arespecified.
【中国标准分类号】:L19
【国际标准分类号】:29_100_10
【页数】:18P;A4
【正文语种】:英语
【英文标准名称】:SpecificationforPropylenePlasticInjectionandExtrusionMaterialsUsingISOProtocolandMethodology
【原文标准名称】:采用ISO协议和方法的聚酯塑料注入和挤压材料规范
【标准号】:ANSI/ASTMD5857-2002
【标准状态】:现行
【国别】:美国
【发布日期】:2002
【实施或试行日期】:2002-01-10
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:plasticsandrubbertechnology;polypropylene;materialstesting;injectionmoulding;polymericmaterials
【摘要】:Thisspecificationcoverspolypropylenematerialssuitableforinjectionmoldingandextrusion.Polymersconsistofpolypropylenehomopolymers,polypropylenecopolymers,andpolypropylene-elastomercompoundsproducedwithorwithouttheadditionofimpactmodifiers(ethylene-propylenerubber,polyisobutylenerubber,andbutylrubber,andsoforth),colorants,stabilizers,lubricants,fillers,orreinforcements.Thisspecificationallowsfortheuseofthosepolypropylenematerialsthatcanberecycled,reconstituted,andreground,providedthatthefollowingconditionsaremet:TherequirementsasstatedinthisspecificationandotherISOguidelinespertainingtothesetypesofmaterialsaremet,andThematerialhasnotbeenmodifiedinanywaytoalteritsconformancetofoodcontactregulationsorsimilarrequirements.Theproportionsofrecycled,reconstituted,andregrindmaterialused,aswellasthenatureandtheamountofanycontaminant,cannotbepracticallycoveredinthisspecification.Itistheresponsibilityofthesupplierandbuyerofrecycled,reconstituted,andregrindmaterialstoensurecompliance.Thepropertiesincludedinthisclassificationsystemarethoserequiredtoidentifythecompositionscovered.Theremaybeotherrequirementsnecessarytoidentifyparticularcharacteristicsimportanttospecializedapplications.ThesemaybespecifiedbyusingthesuffixesasgiveninSectionandthoseinClassificationSystemD4000.Thisclassificationsystemandspecificationareintendedtoprovideameansofcallingoutpolypropylenematerialsusedinthefabricationofenditemsorparts.Itisnotintendedfortheselectionofmaterials.Materialselectionshouldbemadebythosehavingexpertiseintheplasticfieldaftercarefulconsiderationofthedesignandtheperformancerequiredofthepart,theenvironmenttowhichitwillbeexposed,thefabricationprocesstobeemployed,thecostsinvolved,andtheinherentpropertiesofthematerialotherthanthosecoveredbythisspecification.ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thefollowingprecautionarycaveatpertainsonlytothetestmethodsportion,Section,ofthisspecification:Thisspecificationdoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisspecificationtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note1ThisspecificationissimilartobothISO1873-1andISO1873-2,buttodifferentdegrees.ThisspecificationresemblesISO1873-1intitleonly.Thecontentissignificantlydifferent.ThisspecificationandISO1873-2differinapproachordetail;dataobtainedusingeitheraretechnicallyequivalent.
【中国标准分类号】:G32
【国际标准分类号】:83_080_01
【页数】:
【正文语种】:英语
