基本信息
标准名称: | 硝酸钍化学分析方法 铀量的测定 |
英文名称: | Methods for chemical analysis of thorium nitrate-Determination of uranium content |
中标分类: |
冶金 >>
金属化学分析方法 >>
稀有金属及其合金分析方法 |
ICS分类: |
化工技术 >>
无机化学 >>
盐
|
替代情况: | YB 1502-1977 |
发布部门: | 国家技术监督局 |
发布日期: | 1996-07-09 |
实施日期: | 1997-01-01 |
首发日期: | 1996-07-09 |
作废日期: | 2005-10-14 |
主管部门: | 国家发展和改革委员会 |
归口单位: | 全国稀土标准化技术委员会 |
起草单位: | 湖南桃江稀土金属冶炼厂 |
出版日期: | 1900-01-01 |
页数: | 3页 |
适用范围
本标准规定了硝酸钍中铀含量的测定方法。本标准适用于硝酸钍中铀含量的测定。测定范围:0.000 1%~0.001 0%。
前言
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目录
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引用标准
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所属分类: 冶金 金属化学分析方法 稀有金属及其合金分析方法 化工技术 无机化学 盐
【英文标准名称】:Specificationforlow-voltageswitchgearandcontrolgear-Controlcircuitdevicesandswitchingelements-Electromechanicalcontrolcircuitdevices
【原文标准名称】:低压开关设备和控制设备规范.控制电路器件和切换元件.机电控制电路器件
【标准号】:BSEN60947-5-1-1998
【标准状态】:作废
【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】:电控制设备;低压开关设备;机械连接;EMC;控制装置;机电的;特性;控制设备;低电压;开关设备;机电装置;低压设备;电气工程;开关;电磁兼容性;安全元件;开关操纵元件;接触元件;定义;试验;控制开关;规范(验收)
【英文主题词】:specification(approval);controlequipment;emc;definitions;controlswitches;switchgear;controldevices;electromechanical;switches;low-voltageswitchgear;electricalengineering;lowvoltage;properties;switchingelements;safetycomponents;contactelement;electromagneticcompatibility;electriccontrolequipment;lowvoltageequipment;mechanicallinkages;electromechanicaldevices;definition;testing
【摘要】:ThispartofIEC60947appliestocontrolcircuitdevicesandswitchingelementsintendedforcontrolling,signalling,interlocking,etc.,ofswitchgearandcontrolgear.Itappliestocontrolcircuitdeviceshavingaratedvoltagenotexceeding1000Va.c.(atafrequencynotexceeding1000Hz)or600Vd.c.However,foroperationalvoltagesbelow100Va.c.ord.c,seenote2of4.3.1.1.Thisstandardappliestospecifictypesofcontrolcircuitdevicessuchas:—manualcontrolswitches,forexamplepushbuttons,rotaryswitches,footswitches,etc.;—electromagneticallyoperatedcontrolswitches,eithertime-delayedorinstantaneous,forexamplecontactorrelays;—pilotswitches,forexamplepressureswitches,temperaturesensitiveswitches(thermostats),programmers,etc.;—positionswitches,forexamplecontrolswitchesoperatedbypartofamachineormechanism;—associatedcontrolcircuitequipment,forexampleindicatorlights,etc.NOTE1Acontrolcircuitdeviceincludesa)controlswitch(es)andassociateddevicessuchas(an)indicatorlight(s).NOTE2Acontrolswitchincludesa)switchingelement(s)andanactuatingsystem.NOTE3Aswitchingelementmaybeacontactelementorasemiconductorelement.Italsoappliestospecifictypesofswitchingelementsassociatedwithotherdevices(whosemaincircuitsarecoveredbyotherstandards)suchas:—auxiliarycontactsofaswitchingdevice(e.g.contactor,circuitbreaker,etc.)whicharenotdedicatedexclusivelyforusewiththecoilofthatdevice;—interlockingcontactsofenclosuredoors;—controlcircuitcontactsofrotaryswitches;—controlcircuitcontactsofoverloadrelays.ContactorrelaysshallalsomeettherequirementsandtestsofIEC60947-4-1exceptfortheutilizationcategorywhichshallcomplywiththisstandard.ThisstandarddoesnotincludetherelayscoveredinIEC60255orautomaticelectricalcontroldevicesforhouseholdandsimilarpurposes.Thecolourrequirementsofindicatorlights,pushbuttons,etc.,arefoundinIEC60073andalsoinpublication2oftheInternationalCommissionofIllumination(CIE).Theobjectofthisstandardistostate:a)Thecharacteristicsofcontrolcircuitdevices.b)Theelectricalandmechanicalrequirementswithrespectto:1)Thevariousdutiestobeperformed.2)Thesignificanceoftheratedcharacteristicsandofthemarkings.3)Theteststoverifytheratedcharacteristics.c)Thefunctionalrequirementstobesatisfiedbythecontrolcircuitdeviceswithrespectto:1)Environmentalconditions,includingthoseofenclosedequipment.2)Dielectricproperties.3)Terminals.
【中国标准分类号】:K31
【国际标准分类号】:29_130_20
【页数】:72P.;A4
【正文语种】:英语