ZB K 26006-1989 YD系列(IP44)变极多速三相异步电动机 技术条件(机座号80-280 凸缘号FF165-502)
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基本信息
| 标准名称： | YD系列(IP44)变极多速三相异步电动机 技术条件(机座号80-280 凸缘号FF165-502) |
| 中标分类： | 电工 >> 旋转电机 >> 特殊电机 |
| 替代情况： | 被JB/T 7127-93代替 |
| 发布日期： | |
| 实施日期： | 1985-09-01 |
| 首发日期： | |
| 作废日期： | |
| 出版日期： |
适用范围
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前言
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目录
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引用标准
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所属分类： 电工 旋转电机 特殊电机
下载地址: 点击此处下载
【英文标准名称】:StandardTestMethodforPulseVelocityThroughConcrete
【原文标准名称】:通过混凝土脉冲速度的标准试验方法
【标准号】:ASTMC597-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:C09.64
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:concrete;longitudinalstresswave;nondestructivetesting;pulsevelocity;ultrasonictesting;Nondestructiveevaluation(NDE)--concrete/masonry;Pulsevelocity
【摘要】:Thepulsevelocity,V,oflongitudinalstresswavesinaconcretemassisrelatedtoitselasticpropertiesanddensityaccordingtothefollowingrelationship:Thistestmethodisapplicabletoassesstheuniformityandrelativequalityofconcrete,toindicatethepresenceofvoidsandcracks,andtoevaluatetheeffectivenessofcrackrepairs.Itisalsoapplicabletoindicatechangesinthepropertiesofconcrete,andinthesurveyofstructures,toestimatetheseverityofdeteriorationorcracking.Whenusedtomonitorchangesinconditionovertime,testlocationsaretobemarkedonthestructuretoensurethattestsarerepeatedatthesamepositions.Thedegreeofsaturationoftheconcreteaffectsthepulsevelocity,andthisfactormustbeconsideredwhenevaluatingtestresults(Note1).Inaddition,thepulsevelocityinsaturatedconcreteislesssensitivetochangesinitsrelativequality.Note18212;Thepulsevelocityinsaturatedconcretemaybeupto5%higherthanindryconcrete.Thepulsevelocityisindependentofthedimensionsofthetestobjectprovidedreflectedwavesfromboundariesdonotcomplicatethedeterminationofthearrivaltimeofthedirectlytransmittedpulse.Theleastdimensionofthetestobjectmustexceedthewavelengthoftheultrasonicvibrations(Note2).Note28212;Thewavelengthofthevibrationsequalsthepulsevelocitydividedbythefrequencyofvibrations.Forexample,forafrequencyof54kHzandapulsevelocityof3500m/s,thewavelengthis3500/54000=0.065m.Theaccuracyofthemeasurementdependsupontheabilityoftheoperatortodeterminepreciselythedistancebetweenthetransducersandoftheequipmenttomeasurepreciselythepulsetransittime.Thereceivedsignalstrengthandmeasuredtransittimeareaffectedbythecouplingofthetransducerstotheconcretesurfaces.Sufficientcouplingagentandpressuremustbeappliedtothetransducerstoensurestabletransittimes.Thestrengthofthereceivedsignalisalsoaffectedbythetravelpathlengthandbythepresenceanddegreeofcrackingordeteriorationintheconcretetested.Note38212;Propercouplingcanbeverifiedbyviewingtheshapeandmagnitudeofthereceivedwaveform.Thewaveformshouldhaveadecayingsinusoidalshape.Theshapecanbeviewedbymeansofoutputstoanoscilloscopeordigitizeddisplayinherentinthedevice.Theresultsobtainedbytheuseofthistestmethodarenottobeconsideredasameansofmeasuringstrengthnorasanadequatetestforestablishingcomplianceofthemodulusofelasticityoffieldconcretewiththatassumedinthedesign.ThelongitudinalresonancemethodinTestMethodC215isrecommendedfordeterminingthedynamicmodulusofelasticityoftestspecimensobtainedfromfieldconcretebecausePoisson''sratiodoesnothavetobeknown.Note48212;Whencircumstancespermit,avelocity-strength(orvelocity-modulus)relationshipmaybeestablishedbythedeterminationofpulsevelocityandcompressivestrength(ormodulusofelasticity)onanumberofsamplesofaconcrete.Thisrelationshipmayserveasabasisfortheestimationofstrength(ormodulusofelasticity)byfurtherpulse-velocitytestsonthatconcrete.RefertoACI228.1Rforguidanceontheproceduresfordevelopingandusingsucharelationship.Theprocedureisapplicableinbothfieldandlaboratorytestingregardlessofsizeorshapeofthespecimenwithinthelimitationsofavailab..........
【中国标准分类号】:Q13
【国际标准分类号】:91_100_30
【页数】:4P.;A4
【正文语种】:英语
【英文标准名称】:WirelessFeatures:CallForwarding-Default
【原文标准名称】:无线电特征:呼叫输送.默认
【标准号】:ANSI/TIA/EIA664-503-A-2000
【标准状态】:作废
【国别】:美国
【发布日期】:2000
【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】:移动无线电通信系统;电信;无线电工程
【英文主题词】:telecommunications;mobileradiosystems;radioengineering
【摘要】:ThisstandardpresentsarecommendedplanfortheimplementationofUniformFeaturesforuseintheWirelessRadiotelephoneService
【中国标准分类号】:M11
【国际标准分类号】:33_070_50
【页数】:
【正文语种】:英语
【原文标准名称】:通过混凝土脉冲速度的标准试验方法
【标准号】:ASTMC597-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:C09.64
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:concrete;longitudinalstresswave;nondestructivetesting;pulsevelocity;ultrasonictesting;Nondestructiveevaluation(NDE)--concrete/masonry;Pulsevelocity
【摘要】:Thepulsevelocity,V,oflongitudinalstresswavesinaconcretemassisrelatedtoitselasticpropertiesanddensityaccordingtothefollowingrelationship:Thistestmethodisapplicabletoassesstheuniformityandrelativequalityofconcrete,toindicatethepresenceofvoidsandcracks,andtoevaluatetheeffectivenessofcrackrepairs.Itisalsoapplicabletoindicatechangesinthepropertiesofconcrete,andinthesurveyofstructures,toestimatetheseverityofdeteriorationorcracking.Whenusedtomonitorchangesinconditionovertime,testlocationsaretobemarkedonthestructuretoensurethattestsarerepeatedatthesamepositions.Thedegreeofsaturationoftheconcreteaffectsthepulsevelocity,andthisfactormustbeconsideredwhenevaluatingtestresults(Note1).Inaddition,thepulsevelocityinsaturatedconcreteislesssensitivetochangesinitsrelativequality.Note18212;Thepulsevelocityinsaturatedconcretemaybeupto5%higherthanindryconcrete.Thepulsevelocityisindependentofthedimensionsofthetestobjectprovidedreflectedwavesfromboundariesdonotcomplicatethedeterminationofthearrivaltimeofthedirectlytransmittedpulse.Theleastdimensionofthetestobjectmustexceedthewavelengthoftheultrasonicvibrations(Note2).Note28212;Thewavelengthofthevibrationsequalsthepulsevelocitydividedbythefrequencyofvibrations.Forexample,forafrequencyof54kHzandapulsevelocityof3500m/s,thewavelengthis3500/54000=0.065m.Theaccuracyofthemeasurementdependsupontheabilityoftheoperatortodeterminepreciselythedistancebetweenthetransducersandoftheequipmenttomeasurepreciselythepulsetransittime.Thereceivedsignalstrengthandmeasuredtransittimeareaffectedbythecouplingofthetransducerstotheconcretesurfaces.Sufficientcouplingagentandpressuremustbeappliedtothetransducerstoensurestabletransittimes.Thestrengthofthereceivedsignalisalsoaffectedbythetravelpathlengthandbythepresenceanddegreeofcrackingordeteriorationintheconcretetested.Note38212;Propercouplingcanbeverifiedbyviewingtheshapeandmagnitudeofthereceivedwaveform.Thewaveformshouldhaveadecayingsinusoidalshape.Theshapecanbeviewedbymeansofoutputstoanoscilloscopeordigitizeddisplayinherentinthedevice.Theresultsobtainedbytheuseofthistestmethodarenottobeconsideredasameansofmeasuringstrengthnorasanadequatetestforestablishingcomplianceofthemodulusofelasticityoffieldconcretewiththatassumedinthedesign.ThelongitudinalresonancemethodinTestMethodC215isrecommendedfordeterminingthedynamicmodulusofelasticityoftestspecimensobtainedfromfieldconcretebecausePoisson''sratiodoesnothavetobeknown.Note48212;Whencircumstancespermit,avelocity-strength(orvelocity-modulus)relationshipmaybeestablishedbythedeterminationofpulsevelocityandcompressivestrength(ormodulusofelasticity)onanumberofsamplesofaconcrete.Thisrelationshipmayserveasabasisfortheestimationofstrength(ormodulusofelasticity)byfurtherpulse-velocitytestsonthatconcrete.RefertoACI228.1Rforguidanceontheproceduresfordevelopingandusingsucharelationship.Theprocedureisapplicableinbothfieldandlaboratorytestingregardlessofsizeorshapeofthespecimenwithinthelimitationsofavailab..........
【中国标准分类号】:Q13
【国际标准分类号】:91_100_30
【页数】:4P.;A4
【正文语种】:英语
【英文标准名称】:WirelessFeatures:CallForwarding-Default
【原文标准名称】:无线电特征:呼叫输送.默认
【标准号】:ANSI/TIA/EIA664-503-A-2000
【标准状态】:作废
【国别】:美国
【发布日期】:2000
【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】:移动无线电通信系统;电信;无线电工程
【英文主题词】:telecommunications;mobileradiosystems;radioengineering
【摘要】:ThisstandardpresentsarecommendedplanfortheimplementationofUniformFeaturesforuseintheWirelessRadiotelephoneService
【中国标准分类号】:M11
【国际标准分类号】:33_070_50
【页数】:
【正文语种】:英语
