【英文标准名称】:Packagingofwindingwires-Part4-2:methodsoftest-Containersmadefromthermoplasticmaterialfortaperbarrelleddeliveryspools.
【原文标准名称】:绕组线的包装.第4-2部分:试验方法.锥形筒装交货线盘用热塑性材料制容器
【标准号】:NFC31-094-2/A1-2004
【标准状态】:现行
【国别】:法国
【发布日期】:2004-07-01
【实施或试行日期】:2004-07-05
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:容器;绕组;塑料;电气工程;绝缘线;圆锥形;包装件;试验设备;交付;试验;片盘;合成包装材料;供线盘;热塑性聚合物;绕组线;电线;热塑性的
【英文主题词】:
【摘要】:
【中国标准分类号】:K12
【国际标准分类号】:55_060
【页数】:5P;A4
【正文语种】:其他


【英文标准名称】:Acoustics-Determinationofsoundpowerlevelsofnoisesourcesusingsoundpressure-Engineeringmethodinanessentiallyfreefieldoverareflectingplane(ISO3744:1994);EnglishversionofDINENISO3744:2009-11
【原文标准名称】:声学.声压法测定噪声源的声功率级.反射面上近似自由场的工程法(ISO3744:1994),ENISO3744:2009的德文版本
【标准号】:DINENISO3744-2009
【标准状态】:作废
【国别】:德国
【发布日期】:2009-11
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Absorption;Acousticmeasurement;Acoustictesting;Acoustics;Calibration;Clay;Definitions;Determination;Earprotectors;Envelopingsurfacemethods;Environment;Externalnoise;Fixings;Installations;Mathematicalcalculations;Measurement;Measurementduration;Measuringinstruments;Measuringsurfaces;Measuringtechniques;Methods;Methodsofcalculation;Microphones;Noise;Noise(environmental);Noisemeasurements;Noisesources;Operation;Precision;Reflective;Rooms;Soundabsorption;Soundfields;Soundintensity;Soundlevel;Soundlevels;Soundpower;Soundpressure;Soundsources;Specification(approval);Standarddeviation;Testequipment;Testing;Testingconditions
【摘要】:1.1GeneralThisInternationalStandardspecifiesamethodformeasuringthesoundpressurelevelsonameasure-mentsurfaceenvelopinganoisesource,underes-sentiallyfree-fieldconditionsnearoneormorereflectingplanes,inordertocalculatethesoundpowerlevelproducedbythenoisesource.Itgivesrequirementsforthetestenvironmentandinstru-mentation,aswellastechniquesforobtainingthesurfacesoundpressurelevelfromwhichthesoundpowerlevelofthesourceiscalculated,leadingtore-sultswhichhaveagrade2accuracy.Itisimportantthatspecificnoisetestcodesforvari-oustypesofequipmentbeestablishedandusedinaccordancewiththisInternationalStandard.Foreachtypeofequipment,suchnoisetestcodeswillgivedetailedrequirementsonmounting,loadingandop-eratingconditionsfortheequipmentundertestaswellasaselectionofthemeasurementsurfaceandthemicrophonearrayasspecifiedinthisInternationalStandard.NOTE1Thenoisetestcodeforaparticulartypeofequipmentshouldgivedetailedinformationontheparticularsurfacethatisselected,astheuseofdifferentlyshapedmeasurementsurfacesmayyielddifferingestimatesofthesoundpowerlevelofasource.1.2TypesofnoiseandnoisesourcesThemethodspecifiedinthisInternationalStandardissuitableformeasurementsofalltypesofnoise.NOTE2Aclassificationofdifferenttypesofnoise(steady,non-steady,quasi-steady,impulsive,etc.)isgiveninISQ2204.ThisInternationalStandardisapplicabletonoisesourcesofanytypeandsize{e.g.device,machine,component,sub-assembly).NOTE3MeasurementsaccordingtothisInternationalStandardmaybeimpracticableforverytallorverylongsourcessuchaschimneys,ducts,conveyorsandmulti-sourceindustrialplants.1.3TestenvironmentThetestenvironmentthatisapplicableformeasure-mentsmadeinaccordancewiththisInternationalStandardisanessentiallyfreefieldnearoneormorereflectingplanes(indoorsoroutdoors).
【中国标准分类号】:
【国际标准分类号】:17_140_01
【页数】:42P.;A4
【正文语种】:英语