IEEE 1050-1989 发电站仪表及控制设备的接地指南
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【英文标准名称】:Guideforinstrumentationandcontrolequipmentgroundingingeneratingstations
【原文标准名称】:发电站仪表及控制设备的接地指南
【标准号】:IEEE1050-1989
【标准状态】:作废
【国别】:美国
【发布日期】:1989
【实施或试行日期】:
【发布单位】:美国电气电子工程师学会(IEEE)
【起草单位】:IEEE
【标准类型】:()
【标准水平】:()
【中文主题词】:发电厂;监视器;仪器装置;发电设备;电气工程;接地
【英文主题词】:monitors;powergeneratinginstallation;instrumentation;electricalengineering;earthing;powergeneratingplant
【摘要】:
【中国标准分类号】:F22
【国际标准分类号】:27_100
【页数】:80P;A4
【正文语种】:英语
【英文标准名称】:Acoustics-Determinationofsoundpowerlevelsofnoisesourcesusingsoundpressure-Comparisonmethodinsitu
【原文标准名称】:声学声压法测定噪声源声功率级现场比较法
【标准号】:ISO3747-2000
【标准状态】:作废
【国别】:国际
【发布日期】:2000-07
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC43
【标准类型】:()
【标准水平】:()
【中文主题词】:噪声;就地;噪声级;比较;噪声源;机械噪声;声学检验;对比法;机器;应用;试验;声学试验;噪声测量;精密度;噪声(环境的);测量不确定度;测量精度;测定;规范(验收);定义;方法;声压;声源;声级;声学;检验;使用条件;声学测量
【英文主题词】:Acousticmeasurement;Acoustictesting;Acoustics;Comparison;Comparisonmethods;Definitions;Determination;Ergonomics;Insitu;Inspection;Machinenoise;Machines;Measuringaccuracy;Measuringincertainity;Methods;Noise;Noise(environmental);Noiselevels;Noisemeasurements;Noisesources;Operatingconditions;Precision;Safety;Safetyofmachinery;Sonictesting;Soundlevel;Soundlevels;Soundpressure;Soundsources;Specification(approval);Testing;Use
【摘要】:1ThisInternationalStandardspecifiesamethodfordeterminingthesoundpowerlevelsofsoundsourcesinsitu,especiallyifnon-movable.Acomparisonmethodisusedandallmeasurementsarecarriedoutinoctavebands.Themeasurementuncertaintydependsonthetestenvironment.Themeasurementuncertaintyisevaluatedbycomparingwithanindicatordescribingthespatialsounddistribution.Theaccuracywilleitherbethatofanengineeringmethodorasurveymethod.Thesoundpowerlevelofthesourceundertestiscalculatedfromthemeasuredvaluesofthesoundpressurelevelsproducedatspecifiedmeasurementpointsbythesourceandbyareferencesoundsource,respectively.Thesoundpowerleveliscalculatedusingthecalibratedvaluesofthereferencesoundsourceandthedifferencesbetweenthevaluesobtainedwiththesourceundertestandthoseofthereferencesoundsource.Allcalculationsarecarriedoutinoctavebands,fromwhichtheA-weightedsoundpowerlevelisdetermined.NOTEFornoisesourceswhichcanbemoved,otherrelevantstandardsintheISO3740seriesmaybeused.2ThisInternationalStandardisapplicabletoallkindsoftestenvironmentswhicharetobefoundoutsidealaboratoryenvironment,providedthatthebackgroundnoiselevelissufficientlylowandthesoundpressurelevelatthemicrophonepositionsdependsmainlyonreflectionsfromtheroomsurfaces.NOTEISO3744orISO9614mayprovidealternativemethods.3ThisInternationalStandardisprimarilyapplicabletosourceswhichradiatebroad-bandnoise.Itmay,however,alsobeusedforsourceswhichradiatenarrow-bandnoiseordiscretetones,althoughthemeasurementuncertaintymightthenbecomelargerthanstatedherein.NOTEFornoisesourcesemittingstationarynoise,ISO9614maybeusedasanalternative.
【中国标准分类号】:Z32
【国际标准分类号】:17_140_01
【页数】:18P;A4
【正文语种】:英语
【英文标准名称】:Measurementsoftheelectricalpropertiesofelectronictubesandvalves;methodsofmeasurementofspuriousandunwantedelectrodecurrents
【原文标准名称】:电子管和真空管的电气性能测量.第16部分:乱真电极电流和有害电极电流的测量方法
【标准号】:DIN44402-16-1972
【标准状态】:现行
【国别】:德国
【发布日期】:1972-03
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:电气工程;电子工程;测量;阴极;特性;测量技术;定义;电子管
【英文主题词】:electronicengineering;electrontubes;definitions;cathodes;electronictubes;measuringtechniques;properties;electricalengineering;measurement
【摘要】:Measurementsoftheelectricalpropertiesofelectronictubesandvalves;MethodsofmeasurementofspuriousandunwantedelectrodecurrentsDieseNormstimmtsachlichübereinmitderEmpfehlung151-15,Ausgabe1967,Measurementoftheelectricalproperti
【中国标准分类号】:L35
【国际标准分类号】:31_100
【页数】:7P;A4
【正文语种】:德语
