【英文标准名称】:StandardTestMethodforDeterminingTheRelativeDensity(SpecificGravity)AndAbsorptionOfFineAggregatesUsingInfrared
【原文标准名称】:相对密度(特殊重力)和用红外线对细集料吸收测定的标准测试方法
【标准号】:ASTMD7172-2006
【标准状态】:现行
【国别】:美国
【发布日期】:2006
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:吸收;测定;细集料;重力;红外线;相对密度;试验
【英文主题词】:Absorption;Determination;Fineaggregates;Gravity;Infra-red;Relativedensity;Testing
【摘要】:
【中国标准分类号】:Q13
【国际标准分类号】:91_100_30
【页数】:4P;A4
【正文语种】:英语


【英文标准名称】:Electromagneticcompatibility(EMC)-Testingandmeasurementtechniques-Unbalance,immunitytest-Unbalance,immunitytest
【原文标准名称】:电磁兼容性(EMC).试验和测量技术.不平衡、抗扰度试验
【标准号】:BSEN61000-4-27-2001
【标准状态】:作废
【国别】:英国
【发布日期】:2001-04-15
【实施或试行日期】:2001-04-15
【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】:电压波动;非对称;影响量;谐波电流;抗扰性;电磁兼容性;EMC;电气器具;干扰抑制;试验;电气工程;定义;测量技术;极限(数学);基本标准;电气设备;低压电器;电磁试验;电源电压
【英文主题词】:Basicstandard;Definition;Definitions;Electricappliances;Electricalengineering;Electricalequipment;Electromagneticcompatibility;Electromagnetictests;EMC;Harmoniccurrent;Immunity;Influencequantities;Interferencerejections;Limits(mathematics);Low-voltageequipment;Measuringtechniques;Supplyvoltages;Testing;Unsymmetry;Voltagefluctuations
【摘要】:ThispartofIEC61000isabasicEMC(electromagneticcompatibility)publication.Itconsidersimmunitytestsforelectricand/orelectronicequipment(apparatusandsystem)initselectro-magneticenvironment.Onlyconductedphenomenaareconsidered,includingimmunitytestsforequipmentconnectedtopublicandindustrialnetworks.Theobjectofthisstandardistoestablishareferenceforevaluatingtheimmunityofelectricalandelectronicequipmentwhensubjectedtounbalancedpowersupplyvoltage.Thisstandardappliesto50Hz/60Hzthree-phasepoweredelectricaland/orelectronicequipmentwithratedlinecurrentupto16Aperphase.Thisstandarddoesnotapplytoequipmentwiththree-phaseplusneutralconnectionifthatequipmentoperatesasagroupofsingle-phaseloadsconnectedbetweenphaseandneutral.Thisstandarddoesnotapplytoelectricaland/orelectronicequipmentconnectedtoa.c.400Hzdistributionnetworks.Thisstandarddoesnotincludetestsforthezero-sequenceunbalancefactor.Theimmunitytestlevelsrequiredforaspecificelectromagneticenvironmenttogetherwithperformancecriteriaareindicatedintheproduct,productfamilyorgenericstandardsasapplicable.Thisimmunitytestshouldbeincludedinproduct,productfamilyorgenericstandardswhenequipmentislikelytoshowreducedperformanceorfunctionwhenexposedtoasupplyvoltagewithvoltageunbalance.Theverificationofthereliabilityofelectricalcomponents(capacitors,motors,etc.)andlong-termeffects(greaterthanafewminutes)isnotconsideredinthisstandard.
【中国标准分类号】:L06
【国际标准分类号】:33_100_20
【页数】:24P.;A4
【正文语种】:英语