IEC 61156-5-1-2002 数字通信用对绞/星绞多芯和对称电缆.第5-1部分:不高于600MHz的有传输特性的对绞/星绞对称电缆.水平地板布线.空白详细规范
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【英文标准名称】:Multicoreandsymmetricalpair/quadcablesfordigitalcommunications-Part5-1:Symmetricalpair/quadcableswithtransmissioncharacteristicsupto600MHz;Horizontalfloorwiring;Blankdetailspecification
【原文标准名称】:数字通信用对绞/星绞多芯和对称电缆.第5-1部分:不高于600MHz的有传输特性的对绞/星绞对称电缆.水平地板布线.空白详细规范
【标准号】:IEC61156-5-1-2002
【标准状态】:作废
【国别】:国际
【发布日期】:2002-05
【实施或试行日期】:
【发布单位】:国际电工委员会(IEC)
【起草单位】:IEC/SC46C
【标准类型】:()
【标准水平】:()
【中文主题词】:特性;详细规范;综合业务数字网;多芯电缆;数据网络;尺寸;设计;对称的;局部地区网络;布线;数据传送;通信电缆;水平地板布线;空白格式;电性质和电现象;多线的;对绞线;环境条件;规范;数字信号;通信;电气工程;电缆
【英文主题词】:
【摘要】:Thisblankdetailspecificationdescribessymmetricalpair/quadcablesintendedtobeusedindigitalcommunicationsystemssuchasISDN,localareanetworksanddatacommunicationsystemsinhorizontalfloorwiring,usingfrequenciesupto600MHz.ThisspecificationshouldbeusedinconjunctionwithIEC61156-1andIEC61156-5.Theblankdetailspecificationdeterminesthelayoutandstylefordetailspecificationsdescribingsymmetricalpair/quadcableswithtransmissioncharacteristicsupto600MHzfordigitalcommunications.Detailspecifications,basedontheblankdetailspecification,maybepreparedbyanationalorganization,amanufacturer,orauser.Thedesignation"Category5e"isusedhereintodescribeanenhancedCategory5cable(see1.1ofIEC61156-5).
【中国标准分类号】:K13
【国际标准分类号】:33_120_20
【页数】:9P;A4
【正文语种】:英语
【英文标准名称】:Ageingofthermalinsulationmaterials-Determinationofthelong-termchangeinthermalresistanceofclosed-cellplastics(acceleratedlaboratorytestmethods)
【原文标准名称】:绝热材料老化闭孔泡沫塑料热阻的长期变化测定(实验室加速法)
【标准号】:ISO11561-1999
【标准状态】:现行
【国别】:国际
【发布日期】:1999-07
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC163
【标准类型】:()
【标准水平】:()
【中文主题词】:隔热;实验室试验;定义;测定;建筑物;热阻;老化试验;绝热材料;热力学性质;加速度试验
【英文主题词】:Acceleratedtesting;Ageingtests;Buildings;Definitions;Determination;Laboratorytesting;Plastics;Thermalinsulatingmaterials;Thermalinsulation;Thermalresistance;Thermodynamicproperties
【摘要】:ThisInternationalStandardspecifiestwolaboratorytestmethods,basedonslicingandscalingtechniques,todeterminethelong-termchangesinthethermalresistanceofclosed-cell(normally90%)cellularplasticmaterialsthatcontaingaseswhich,throughdiffusionprocesses,affectthepropertiesofafoamwithtime.Usingstandardmethodsforthemeasurementofthermalresistance,methodAconsistsofperiodicmeasurementsperformedoverashorttimeintervalonthinspecimensconditionedinacontrolledambienttemperatureenvironment.Theresultsofrelativechangewithtimeareusedinconjunctionwithamathematicaltechniquetoderivethethermalresistanceofgreaterthicknessesofthematerialasafunctionoftime.MethodBdescribesasimpletesttodetermineaconservativedesignlife-timevalue(25yearsandlonger)foranunfaced,closed-cell,cellularplasticproduct.Thismethodislimitedcurrentlytounfacedhomogeneousmaterials.Forthismethod,multiplespecimensofthecoreandsurfacesofmaterialswithvariationsintheslopeoftheprimarystagethermalresistivityandatimerelationshipoflessthan10%withinasampleareconsideredtobehomogeneous.Generally,productswithnaturalskinsorwithdensitydeviationsnormallyfoundwithsuchproductsmaybeconsideredacceptablefortestbythistechnique.
【中国标准分类号】:Q25
【国际标准分类号】:91_100_60
【页数】:19P.;A4
【正文语种】:英语
【英文标准名称】:Electricalsafetyinlowvoltagedistributionsystemsupto1000Va.c.and1500Vd.c..Equipmentfortesting,measuringormonitoringofprotectivemeasures-Part9:EquipmentforinsulationfaultlocationinITsystems
【原文标准名称】:不超过1000V交流和1500V直流的低压分布系统的电气安全性.防护措施测试,测量和监控设备.第9部分:IT系统中绝缘故障的定位设备
【标准号】:BSEN61557-9-2009
【标准状态】:现行
【国别】:英国
【发布日期】:2009-04-30
【实施或试行日期】:2009-04-30
【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】:交流电流;交流电网络;通信网;控制仪器;控制;电流;定义;直流电流;直流装置;直流网络;(电网)电源;电气工程;电气安全性;电磁试验;故障探测;信息技术;作标记;额定电压装置;绝缘监视装置;绝缘电阻;绝缘故障;绝缘米;绝缘件;IT系统;低压电源;低压电器;低压设备;测量;测量设备;测量仪器;监控;监视装置;标准使用;操作说明书;防电击;保护措施;额定电流;额定电压;基准状态;规范(验收);样品;电源电压;开关电路;电信;试验设备;试验;试验准备工作;故障检修员
【英文主题词】:Alternatingcurrent;Alternatingcurrentnetworks;Communicationnetworks;Controlinstruments;Controlling;Currents;Definitions;Directcurrent;Directcurrentinstallations;Directcurrentnetworks;Electricmains;Electricalengineering;Electricalsafety;Electromagnetictests;Faultfinding;Informationtechnology;Inscription;Installationsforratedvoltages;Insulatingmonitoringdevices;Insulatingresistance;Insulationfault;Insulationmeters;Insulations;ITsystems;Lowvoltagemains;Low-voltageequipment;Low-voltageinstallations;Measuring;Measuringequipment;Measuringinstruments;Monitoring;Monitoringdevice;Nominaluse;Operatinginstructions;Protectionagainstelectricshocks;Protectivemeasures;Ratedcurrent;Ratedvoltage;Referenceconditions;Specification(approval);Specimens;Supplyvoltages;Switchingcircuits;Telecommunications;Testequipment;Testing;Testingset-ups;Troubleshooters
【摘要】:ThispartofIEC61557specifiestherequirementsforinsulationfaultlocationsystemswhichlocalizeinsulationfaultsinanypartofthesysteminunearthedITa.c.systemsandunearthedITa.c.systemswithgalvanicallyconnectedd.c.circuitshavingnominalvoltagesupto1000Va.c.,aswellasinunearthedITd.c.systemswithvoltagesupto1500Vd.c.,independentofthemeasuringprinciple.NOTE1ITsystemsaredescribedinIEC60364-4-41amongstotherliterature.Additionaldataforaselectionofdevicesinotherstandardsshouldbenoted.NOTE2Furtherinformationoninsulationfaultlocationcanbefoundinthefollowingstandards:IEC60364-4-41:2005,411.6,andIEC60364-5-53:2001,531.3.
【中国标准分类号】:K09
【国际标准分类号】:17_220_20;25_040_40;29_080_01
【页数】:28P.;A4
【正文语种】:英语