BS EN 50065-4-5-2003 频率范围为3kHz至148.5kHz的低压电气设备的信号传输.低压去耦滤波器.分段过滤器

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【英文标准名称】:Signallingonlow-voltageelectricalinstallationsinthefrequencyrange3kHzto148.5kHz-Lowvoltagedecouplingfilters-Segmentationfilter
【原文标准名称】:频率范围为3kHz至148.5kHz的低压电气设备的信号传输.低压去耦滤波器.分段过滤器
【标准号】:BSEN50065-4-5-2003
【标准状态】:现行
【国别】:英国
【发布日期】:2003-04-11
【实施或试行日期】:2003-04-11
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:低电压;电气工程;频率范围;数据传送;极限(数学);影响;试验;规范(验收);过滤器;信号;输出信号;低压电源;传输性能;信息传递;退耦;电压;尺寸;信号传输;频率;阻抗;无线电干扰;试验条件;频带;分配网
【英文主题词】:Bandoffrequencies;Datatransfer;Decoupling;Definition;Definitions;Dimensions;Distributionnetworks;Electricalengineering;Filters;Frequencies;Frequencyranges;Impedance;Influences;Informationtransfer;Limits(mathematics);Lowvoltage;Lowvoltagemains;Outputsignals;Radiodisturbances;Signaltransmission;Signals;Specification(approval);Testing;Testingconditions;Transmissionperformance;Voltage
【摘要】:Thisstandardappliestosegmentationfiltersinamainscommunicationsystemusedforsingleormultiphaseinstallationshavingaphasetoneutralvoltagenotexceeding250Va.c.andanominalcurrentnotexceeding125A,intendedforhouseholdandsimilarfixedinstallationincludingresidential,commercialandlightindustrialbuildingsandutilitynetworks.Thesefilters(seeFigure1)areusedtocontrolthecouplingofsignalsbetweentwoareasofamainscommunicationsystem.Thestandarddefines·theminimumimpedanceintherelevantfrequencyrange(s)atbothports,·theminimumattenuationofsignalstransmittedbetweenport.
【中国标准分类号】:M30
【国际标准分类号】:31_160;33_040_30;97_120
【页数】:10P;A4
【正文语种】:英语


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【英文标准名称】:Fugitiveanddiffuseemissionsofcommonconcerntoindustrysectors-QualificationoffugitivedustsourcesbyReverseDispersionModelling
【原文标准名称】:工业区共有的易排放和扩散的排出物.通过反向扩散模型的易排放粉尘源的鉴定
【标准号】:BSEN15445-2008
【标准状态】:现行
【国别】:英国
【发布日期】:2008-09-30
【实施或试行日期】:2008-09-30
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:空气污染;空气污染测量;空气净化;空气质量;粗粒粉尘;定义;扩散;扩散模型;排放;排放率;排放源;环境管理;细屑;易排放排出物;工业设施;工业;数学计算;测量;计量学;污染防护;抽样方法;挥发物质
【英文主题词】:Airpollution;Airpollutionmeasurement;Airpurification;Airquality;Coarsedust;Definition;Definitions;Diffuse;Dispersionmodel;Emission;Emissionrate;Emissionrates;Emissionsources;Environmentalmanagements;Fines;Fugitiveemissions;Industrialfacilities;Industries;Mathematicalcalculations;Measurement;Metrology;Preventionofpollution;Samplingmethods;Volatilematter
【摘要】:ThisstandardspecifiesaReverseDispersionModellingmethodtoqualifythefugitiveemissionratesofdiffusefineandcoarsedustsourcesofindustrialplantsorareas.Theapplicationneedscalculationsusingadispersionmodel,andthedefinitionofasamplingexperimentalset-uptakingintoaccountfielddatasuchasnumber,heightandwidthofdiffusedustsources,samplingdistances,andmeteorologicalinformation.TheRDMmethoddoesnotallowquantificationinabsolutefiguresofthedustemissionratesbecauseofanundeterminedaccuracydependingonvarioussiteconditions,butitisatoolwhichenableseachindustrialplanttoidentifyitsdustsourcesthatemitthemost,andthentoimplementactionsreducingtheirimportancebyself-controlandrelatedimprovementprocessaspartofenvironmentalmanagement.Inthisframework,theRDMmethodshouldnotbeusedtocontrolorverifyanycompliancewithairqualitythresholdglobalvalueswhichmightbecontainedinanoperatingpermit,ortocarryoutcomparisonbetweendifferentplantsbelongingtothesameindustrialsector.
【中国标准分类号】:Z15;C70
【国际标准分类号】:13_040_40
【页数】:20P.;A4
【正文语种】:英语


【英文标准名称】:FRUITANDVEGETABLEJUICES.DETERMINATIONOFTHESODIUM,POTASSIUM,CALCIUMANDMAGNESIUMCONTENTS.ATOMICABSORPTIONSPECTROMETRICMETHOD.
【原文标准名称】:水果和蔬菜汁.钠、钾、钙和镁含量的测定.原子吸收分光光度法
【标准号】:NFV76-117-1986
【标准状态】:作废
【国别】:法国
【发布日期】:1986-09
【实施或试行日期】:1986-08-05
【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】:饮料;水果和蔬菜汁;汁(食品);原子吸收分光光度测定法;钙;镁;钠;钾;化学分析;含量测定;化学分析和试验
【英文主题词】:chemicalanalysisandtesting;calcium;magnesium;fruit-andvegetablejuices;juices(food);beverages;potassium;sodium;chemicalanalysis;determinationofcontent;atomicabsorptionspectrophotometry
【摘要】:
【中国标准分类号】:X51
【国际标准分类号】:
【页数】:6P;A4
【正文语种】:其他