NF C61-412-1-2003 电气附件.家用和类似设备用过电流保护断路器.第1部分:交流电用断路器
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【英文标准名称】:Electricalaccessories-Circuitbreakersforovercurrentprotectionforhouseholdandsimilarinstallations-Part1:circuit-breakersfora.c.operation.
【原文标准名称】:电气附件.家用和类似设备用过电流保护断路器.第1部分:交流电用断路器
【标准号】:NFC61-412-1-2003
【标准状态】:现行
【国别】:法国
【发布日期】:2003-07-01
【实施或试行日期】:2003-07-05
【发布单位】:法国标准化协会(FR-AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:尺寸选定;使用条件;试验条件;断路器;交流断路器;定义;寿命试验;自动断路器;过流断路器;线路开关;额定值;交流电流;电气设备;电力设备;开关功率;小型断路器;家用;开关;分类系统;过电流;低压电器;过电流保护装置;家用设备;作标记;电气工程;设计;特性;特性;试验
【英文主题词】:Abilitytoswitch;Alternatingcurrent;Alternating-currentcircuitbreakers;Auxiliarycircuits;Characteristics;Circuit-breakers;Clamps;Classificationsystems;Contactsafetydevices;Definition;Definitions;Design;Dimensioning;Electricalappliances;Electricalengineering;Electricalinstallations;Erecting(constructionoperation);Householdequipment;Householduse;Installations;Letterings;Lifetest;Lineswitch;Low-voltageequipment;Marking;Miniaturecircuit-breakers;Mountingconditions;Operatingconditions;Overcurrent;Overcurrentcircuit-breakers;Overcurrentprotection;Productinformation;Properties;Ratedvoltages;Ratings;Resistance;Routinechecktests;Self-actingcircuit-breakers;Switches;Switchingpower;Testing;Testingconditions
【摘要】:
【中国标准分类号】:K31
【国际标准分类号】:29_120_50
【页数】:130P;A4
【正文语种】:其他
【英文标准名称】:Informationprocessingsystems-FibreDistributedDataInterface(FDDI)-Physicallayerprotocol(PHY-2)
【原文标准名称】:信息处理系统.光纤分布式数据接口(FDDI).物理层协议(PHY-2)
【标准号】:BSISO/IEC9314-7-1998
【标准状态】:现行
【国别】:英国
【发布日期】:1998-12-15
【实施或试行日期】:1998-12-15
【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】:信息交流;接口;编码(数据转换);语义学;光纤;物理层(开放系统互连);权标环网;数据链路层;纤维光缆;数据传输方法;协议;开放系统互连;数据传输;光纤分布数据接口(FIBERDISTRIBUTEDDATAINTERFACE);计算机网络;通信网;纤维光学;符号
【英文主题词】:Communicationprocedures;Controlprocedures;Datainterface;Dataprocessing;Datatransmission;Definition;Definitions;FDDI;Informationinterchange;Informationtechnology;Interfaces;Interfaces(dataprocessing);Networkinterconnection;Opticalfibres;Opticalwaveguides;Physicallayers;Protocols
【摘要】:ThispartofISO/IEC9314specifiesthePhysicalLayerProtocol(PHY),theuppersublayerofthePhysicalLayer,forFibreDistributedDataInterface(FDDI).FDDIprovidesahigh-bandwidth(100Mbit/s),general-purposeinterconnectionamonginformationprocessingsystems,subsystemsandperipheralequipment,usingfibreopticsorothertransmissionmedia.FDDIcanbeconfiguredtosupportasustaineddatatransferrateofatleast80Mbit/s(10Mbyte/s).FDDIprovidesconnectivityformanynodesdistributedoverdistancesofmanykilometersinextent.CertaindefaultparametervaluesforFDDI(e.g.timersettings)arecalculatedonthebasisofupto1000transmissionlinksorupto200kmtotalfibre-pathlength(typicallycorrespondingto500nodesand100kmofdualfibrecable,respectively);however,theFDDIprotocolscansupportmuchlargernetworksbyincreasingtheseparametervalues.Asshowninfigure1,FDDIconsistsofa)PhysicalLayer(PL),whichisdividedintotwosublayers:1)APhysicalMediumDependent(PMD),whichprovidesthedigitalbasebandpoint-to-pointcommunicationbetweennodesintheFDDInetwork.ThePMDprovidesallservicesnecessarytotransportasuitablycodeddigitalbitstreamfromnodetonode.ThePMDdefinesandcharacterizesthefibre-opticdriversandreceivers,medium-dependentcoderequirements,cables,connectors,powerbudgets,opticalbypassprovisions,andphysical-hardware-relatedcharacteristics.ItspecifiesthepointofinterconnectabilityforconformingFDDIattachments.TheinitialPMDstandarddefinesattachmenttomulti-modefibre.AlternativePMDsublayerstandardsarebeingdevelopedforattachmenttoothertransmissionmediaandformappingtoSynchronousOpticalNetwork(SONET),2)APhysicalLayerProtocol(PHY),whichprovidesconnectionbetweenthePMDandtheDataLinkLayer.PHYestablishesclocksynchronizationwiththeupstreamcode-bitdatastreamanddecodesthisincomingcode-bitstreamintoanequivalentsymbolstreamforusebythehigherlayers.PHYprovidesencodinganddecodingbetweendataandcontrolindicatorsymbolsandcodebits,mediumconditioningandinitializing,thesynchronizationofincomingandoutgoingcode-bitclocks,andthedelineationofoctetboundariesasrequiredforthetransmissionofinformationtoorfromhigherlayers.InformationtobetransmittedonthemediumisencodedbythePHYusingagrouptransmissioncode.ThedefinitionofPHYiscontainedinthispartofISO/IEC9314.b)ADataLinkLayer(DLL),whichisdividedintotwoormoresublayers:1)AnoptionalHybridRingControl(HRC),whichprovidesmultiplexingofpacketandcircuitswitcheddataonthesharedFDDImedium.HRCcomprisestwointernalcomponents,aHybridMultiplexer(H-MUX)andanIsochronousMAC(I-MAC).H-MUXmaintainsasynchronous125μscyclestructureandmultiplexesthepacketandcircuitswitcheddatastreams,andI-MACprovidesaccesstocircuitswitchedchannels,2)AMediaAccessControl(MAC),whichprovidesfairanddeterministicaccesstothemedium,addressrecognition,andgenerationandverificationofframechecksequences.Itsprimaryfunctionisthedeliveryofpacketdata,includingframegeneration,repetition,andremoval,3)AnoptionalLogicalLinkControl(LLC),whichprovidesacommonprotocolforanyrequiredpacketdataadaptationservicesbetweenMACandtheNetworkLayer.LLCisnotspecifiedbyFDDI,4)AnoptionalCircuitSwitchingMultiplexer(CS-MUX),whichprovidesacommonprotocolforanyrequiredcircuitdataadaptationservicesbetweenI-MACandtheNetworkLayer.CS-MUXisnotspecifiedbyFDDI.c)AStationManagement(SMT),whichprovidesthecoordinationnecessaryatthenodeleveltomanagetheprocessesunderwayinthevariousFDDIlayerssuchthatanodemayworkcooperativelyonaring.SMTprovidesservicessuchascontrolofconfigurationmanagement,faultisolatio
【中国标准分类号】:L65
【国际标准分类号】:33_180_01;35_110
【页数】:56P.;A4
【正文语种】:英语
【英文标准名称】:Surfaceactiveagents-Determinationoftotalbasenitrogen-Potentiometrictitration;GermanversionEN13716:2001
【原文标准名称】:表面活性剂.基本氮总量测定.电位滴定法
【标准号】:EN13716-2001
【标准状态】:现行
【国别】:
【发布日期】:2003-05
【实施或试行日期】:
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:洗涤剂;电位测量法;滴定法;氮含量;含量测定;氮;表面活性剂;电势分析法;物质;碱;滴定;测量规程;试验;材料;化学分析和试验
【英文主题词】:Bases(chemical);Chemicalanalysisandtesting;Detergents;Determinationofcontent;Determinationprocedures;Materials;Nitrogen;Nitrogencontent;Potentiometricanalysis;Potentiometricmethods;Substances;Surfaceactive;Surfactants;Testing;Titration;Titrationmethod
【摘要】:
【中国标准分类号】:G73
【国际标准分类号】:71_100_40
【页数】:10P.;A4
【正文语种】:英语