LISN线路阻抗稳定网络(LineImpedanceStabilizationNetwork)是传导测试中一个重要的辅助测试设备.docx
LISN线路阻抗稳定网络（LineImpedanceStabilizationNetWOrk）是传导测试中一个重要的辅助测试设备Cispr16-1-2/GBT6113.102无线电骚扰和抗扰度测量设备和测量方法规范，第1-2部分:无线电骚扰和抗扰度测量设备辅助设备传导骚扰传导测试是全球各地区、国际、国内电磁兼容测试中一项非常重要的测试，几乎涉及任何将要接入公共电网中的电子电器设备！USN线路阻抗稳定网络（LineImpedanceStabilizationNetWOrk）是传导测试中一个重要的辅助测试设备，对USN的校准主要涉及如下两个重要参数：1.ISN有两种基本类型：耦合不对称电压的V型网络及耦合对称电压和非对称电压的型网络。对于每根电源线,LISN都配有3个端子，连接设备的电源端、连接受试设备的设备端和连接测试设备的干臃出端。在Cispr16-1-2/GBT6113.102中，对LISN都提出了明确的要求。并给出了相关频率范围内网络阻抗随频率变化的特性曲线限值！为了得到更加准确的测试结果。EMC实验室一般都会对LISN的电压衰减进行补偿。但在标准中只对LISN的阻抗提出了明确的要求，它的电压分压系数（另称插入损耗）需要EMC实验室自己测量得到或由校准机构提供！1.LlSN的电压分压系数（插入损耗）电压分压系数是指RF干扰输出端接50欧姆负载阻抗时（测试时接接收机），电压分压系数是指LISN的设备（EUT）端到RF干扰输出端的电压衰减之比值。2、LlSN的特征阻抗1.ISN的阻抗是指RF干扰输出端接50欧姆负载阻抗时（测试时接接收机）在设备端EUT）测得的、相对于参考地的阻抗的模(阻抗模：在正弦电流电路中，二端电路中的电压有效值除以电流有效值之商。ThelatestrevisionofCISPR25islookingintovarioustypesofArtificialNetworksusedintoday'sautomotiveEMC.1. ArtificialNetwork(AN):usedforLVpowersupplies;人工网络(AN):用5H氐压电源；2. HighVoltageArtificialNetwork(HV-AN):usedforhighvoltaged.c.powersupplies;高压人工网络(HV-AN):用于高压直流电源；3. DirectCurrentchargingArtificialNetwork(DC-charging-AN):usedford.c.powersupplies;直流充电人工网络(DC-charge-AN):用于直流充电电源；4. ArtificialMainsNetwork(AMN):usedfora.c.powermains;人工电源网络(AMN):用于交流电电源；5. AsymmetricArtificialNetwork(AAN):usedforsignal/controlportlinesand/orwirednetworkportlines.非对称人工网络(AAN):用于信号/控制端口线和/或有线网络端口线。1. ArtificialNetwork(AN)Key1.1:5HA:PorttopowersupplyC1:0,1FP:PorttoEUTC2:1FB:GroundR1:1kMEP:MeasuringPortExampleof5HANschematic5040302010o110°101102Frequency/MHzCharacteristicsoftheANimpedanceZPBMagnitudeoftheANimpedanceZpbFrequencyMHzMagnitudeoftheimpedanceNominalvalueLowertoleranceUppertolerance0,103,202,563,840,154.793,835,750.206.375,097,640.309.457.5611.340,4012,419,9314.890,5015,2312.1818,270,7020,3416,2724.411,0026,6421,3131.971,5033.8827.1040.652,0038,2630,6145.922,5040.9732.7749.163,0042,7034,1651,244,0044,6535,7253,595,0045.6636.5354.797,0046,5937.2755,9010.0047.1037.6856.5315,0047,3937.9156,8720,0047,4937,9956,9930.0047.5638.0557.0750,0047,6038.0857.12100.0047.6138.0957.14MeasurementportsofHV-AN(s)mustbeterminatedwitha50load.TheHV-ANimpedanceZPB(tolerance±20%)inthemeasurementfrequencyrangeof0.1MHzto100MHz.Thistableaboveshowsthenominalimpedanceandupper/lowertolerancesintabularform.ItismeasuredbetweentheEUTHVandgroundterminalswitha50loadonthemeasurementportandwiththesupplylineHVandgroundterminalsshortcircuited.HV-AN的测量端口必须端接50负载。HV-AN阻抗ZPB（公差±20%）在0.1MHz至100MHz的测量频率范围内。上表以表格形式显示了标称阻抗和上/T容差。它是在EUTHV和接地端子之间测量的，测量端口上有50Q负载，并且电源线HV和接地端子短路。2. HighVoltageArtificialNetwork(HV-AN)HV SupplyHV supply : High Voltage power supplyEUT HV : High Voltage of EUTMEP : Measuring PortGND : GroundKey1.1:5HC1:0.1FC2：0,1F(defaultvalue)R1:1kR2：1M(dischargingC?to<50VdCWithin60s)Exampleof5HHVANschematicKey1.1：5HHVsupply:HighVoltagepowersupply(positiveandnegative)c1:°pFEUTHV:HighVoltageofEUT(positiveandnegative)c2:01PF(defaultvalue)MEP:MeasuringPortR1:1k0GND:Ground21MC(dischargingC?t°<50VdCWithinz0cm：Differentialandcommon-modeimpedance60s)ImpedancematchingnetworkattachedbetweenHVANsandEUT5 H0.1 F0,1 F (default value)1 kHV+ SupplyHV- SupplyHVsupply:HighVoltagepowersupply(positiveandnegative)EUTHV:HighVoltageofEUT(positiveandnegative)MEP:MeasuringPortGND:Ground1 M (discharging C? t0 V 50 VdC Within60 s)Exampleof5HHVANcombinationinasingleshieldedbox3. DirectCurrentchargingArtificialNetwork(DC-charging-AN)Key1."1：5HHVsupply:HighVoltagepowersupply0.1FVehicleinlet:connectiontovehicleinletCj：1F(defaultvalue,ifanothervalueisused,ithastobeMEP:MeasuringPortjustified)IkCGND:GroundR2：1MQ(dischargingC?toV50VdCWithin60s)Note:TheshieldingoftheDC-charging-ANisoptionalExampleof5HDC-charging-ANschematic4. ArtificialMainsNetwork(AMN)Powermainsmustbeappliedtothevehiclethrough50H50AMN(s).TheDCresistancebetweenthegroundoftheAMNmeasurementportandthegroundplanemustnotexceed2,5m.电源必须通过50H50AMN(s)连接到车辆。AMN测量端口的接地与接地平面之间的直流电阻不得超过2.5mo4.1 0ModifiedreferencegroundconnectionThemeasurementofsometypesofequipmentmayrequiretheinsertionofanimpedanceinthereferencegroundconductorintheAMNsin4.3and4.4,followingtherequirementsoftherelatedproductpublications.ThisisinsertedatpointXmarkedinthereferencegroundleadinFigures5and6,respectively.Theimpedancetobeinsertediseithera1,6mHinductor,oranimpedanceconformingtotheimpedancerequirementof4.3or4.4,asappropriateforthefrequencyrange.NOTEWhenconsideringthefrequencyrange9kHzto150kHz,forsafetyreasonsthe5resistoroftheartificialmainsV-networkisnotinserted.4.2 0修改的参考接地连接根据相关产品出版物的要求，某些类型设备的测量可能需要在43和4.4中的AMN中的参考接地导体中插入阻抗。它分别插入图5和图6中参考接地引线中标记的X点。要插入的阻抗是1.6mH电感器，或符合43或4.4阻抗要求的阻抗,视情况而定频率范围。注：当考虑9kHz至15
