放电管

EPCOSLimited/041SurgeArresterBusinessUnitEPCOSLimited/042TelecomProtectionDanger:HighVoltageTransients危险来自瞬时高压Objectives&RequirementsforProtectionConcepts保护概念的目标和必要条件•Reducetheprobabilityofdamagetotelecommunicationinfrastructureandservicepersonnel（减少对于通讯构造和服务人员可能的危险）•Highreliabilityoverlongperiodsoftime（长时间高可靠性）•Cost-effective（有成本效益）EPCOSLimited/043OvervoltageSources•Lightnings（闪电）(Atmosphericdischarges大气放电)•Inductionfrompowerlines（电源线的感应）(Electro-magneticinfluence电磁感应)•Powercross（串火）EPCOSLimited/044Protectionwith2-/3-ElectrodeArrestersTwo2-ElectrodeArresters两个2极放电管One3-ElectrodeArrester一个3极放电管ProtectionPrinciple保护原理:ArresterArresterDeviceDeviceabeeabEPCOSLimited/045SignalLineProtectioninModems/LineCards在调制解调器/线卡里的信号线路的保护Protectionwith2ElectrodeArrester:2极放电管的保护ArresterDevicetipringExamples:•A81-Series•EC-Series•M50-Series•EM-SeriesEPCOSLimited/046ArresterDesign(SectionalView)ActivatingCompound电子粉Electrodes电极CeramicInsulator陶瓷绝缘体DischargeRegion放电区域IgnitionAid导电带Electrode'a'Electrode'b'CentreElectrode'e'FailSafeMechanism失效保护卡机械装置SolderPill热熔片2eArrester3eArrester3eArrester+FailSafeClipCeramicInsulatorEPCOSLimited/047ArresterDesign(ExplosiveView)2-ElectrodeArrester3-ElectrodeArrester1–Electrode电极2-BrazingRing焊接铜环3–Insulator绝缘体12321123212321EPCOSLimited/048ResponseBehaviouratDifferentVoltageRiseTimes在不同电压上升时间的响应特性02468µs0,511,52,0s100V/s1kV/µsDCSpark-overVoltage直流击穿电压TimeImpulseSpark-overVoltage冲击击穿电压100V/µsStaticResponse静态响应(OperatingVoltage工作电压)DynamicResponse动态响应(LightningInfluence闪电影响)V900800600400200Spark-overVoltageEPCOSLimited/049ArresterResponseCharacteristic响应特性StaticResponse静态反应(Uag/Vsdc)0200400600800100012001021041061081010V/sDynamicResponse动态反应(Uas/Vsi)1kV/µsVSpark-overCharacteristic冲击特性100V/sMax.Min.10kV/µs100V/µsEPCOSLimited/0410ImpulseDischargeCurrentWave8/20µs冲击放电电流波EPCOSLimited/0411Classifications/Applications/TypesMediumDutyImpulseDischargeCurrent冲击放电电流:10kA-20kAACDischargeCurrent交流放电电流:10AHeavyDutyImpulseDischargeCurrent:20kAACDischargeCurrent:20ALightDutyImpulseDischargeCurrent（冲击放电电流）:2.5kA-5kAACDischargeCurrent（交流放电电流）:2.5A-5AApplications应用/Types类型BuriedCables,PBXsindenselypopulatedareas,maindistributors,subscriberunits（地下电缆，在浓密人口聚集区的交换机，主配线架和终端保护等）2e:M5/EC/L73e:T9Dropboxesoverheadcables-buriedcables,subscriberunits架空电缆的转接接头，地下电缆，终端客户2e:N8/A73e:T8/T2Overheadlines,installationssubjecttoincreasedlightningeffects,substationsinexposedlocations架空电缆，易受到闪电袭击的装置以及处于暴露位置的客户2e:A83e:T6Classifications分类EPCOSLimited/0412TechnicalCharacteristics•DCspark-overvoltage:•Impulsedischargecurrent(8/20µs):•Alternatingdischargecurrent(1s):•Arcvoltage:•Insulationresistance:•Capacitance:•Operatingtemperaturerange:•Storagetemperaturerange:•Relativehumidity:Supervisionoftheseparametersfollowstheappropriatestandards.70-5000V2.5kA-60kA2.5A-20A25V1010W0.7–1.5pF-40°C-100°C-40°C-100°C10%-95%EPCOSLimited/04133-ElectrodeArrestersEPCOSLimited/04142-ElectrodeArrestersEPCOSLimited/0415TypicalTelecomApplicationsFibreOptic光纤Copper铜Distributor配线架Amplifier放大器OverheadLines高架线PrivateAutomaticBranchExchange(PABX)程控交换机ArresterApplication放电管应用BranchExchange分支交换机MDF总配线架Phone,Fax,Modem,LAN,Network-TerminalsSubscriber终端客户Amplifier放大器(BaseStations,MobileExchanges,MultiplexerUnits)基站，手机交换，多路器单元CellularPhoneNetwork蜂窝电话网络EPCOSLimited/0416TwistedPair双绞线ADSLNetworkStructureCentralOfficeSplitterADSLLineNTExchangeHighspeeddata高速数据VoiceNetwork声音网络NTBASplitterCustomerPremisesPOTS光学地面模拟器ADSLModemISDN总和业务服务网PCEPCOSLimited/0417ADSLMODEMArchitectureADSL调制解调器体系结构Lineinterface线路接口AnalogPart模拟部分DigitalPart数字部分PC个人电脑PhoneLine电话线EPCOSLimited/0418AFEFollowITU992.1DNPfromphonejacktoAFEtotalimpedance100ohmsSupplierischipsetmanufacturesuggestionandapprovedLineInterfaceCircuit线路接口线路OvercurrentprotectionSurgeprotectionAnalogFrontEnd模拟前端TransformerSMDinductor:GreencolorCPPS/HC1:PinkcolorFilmcap:RedcolorSuggestionpart推荐部件:ES/EMseries230v,300v,350v,400v,420vEPCOSLimited/0419xDSLTechnologyUpstream(Mbps)Downstream(Mbps)Transmit(feet)Bandwidth(Hz)TechnologyADSL1818,00025K~1.1MDMTADSL211218,6002.5K~2.2MDMTADSL2+12418,600138K~2.2MDMTSHDSL2.32.322,00010k~500KTC-PAMVDSL6525,000138K~8MDMT/QAMVDSL21001006,00031MDMTEPCOSLimited/0420StandardsEPCOSLimited/0421V13-A500XNapplication应用:3+1OverVoltageProtection过压保护Fuse保险Inductance电感Protectionagainstdirectstroke(airgap)保护预防直接冲击（空气隙）Protectionagainstdirectstroke(airgap)SurgeArresterV13-A500XNSurgeArrester(A81-C600X,M51-A600X,EC600X)FILNPETT-mains•NandPEseparately中线和地是分离的•mainlyruralareas主要在乡下地区•Basestation,Buildingentranceprotection基站，建筑物入口保护EPCOSLimited/0422V13-A500XNapplication:3+1OverVoltageProtectionNorms标准•IEC64/1168/CDV(ElectricalInstallationsofBuildings建筑物的电子安装),Section534(Devicesforprotectionagainstovervoltages过压保护装置)•ForprotectionofTT-mains:RequirementforSurgeArresterbetweenNandPE(Varistorisnotallowed)在中线和地线之间要求加放电管（不允许使用压敏）Electricalrequirements电的要求•Uag400V(beforeandafterstress,indarkness)•uas1500Vwave1.2/50,6kV(beforeandafterstress,indarkness)•holdoverat250Vrmsand200Aaftereachcycle(20times)•IwN1time300Awithduration200