NF L25-110-1979 铝合金合页

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【英文标准名称】:Electricalequipmentforfurnacesandancillaryequipment-Requirementsforapplicationdesignandinstallation
【原文标准名称】:炉用电气设备和辅助设备.应用设计和安装要求
【标准号】:BSEN50156-1-2005
【标准状态】:现行
【国别】:英国
【发布日期】:2005-01-20
【实施或试行日期】:2005-01-20
【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】:电气设备;电绝缘材料;安全系统;安装;热水设备;使用条件;范围;电气安全;水加热器;加热器;炉;辅助电路;传热设备;燃烧设备;热空气加热器;电位均衡;燃烧室;规范(验收);作标记;安全要求;热水系统;开关设备;定义;电源
【英文主题词】:Auxiliarycircuits;Combustionchambers;Definition;Definitions;Electricmains;Electricalequipment;Electricalinstallations;Electricalinsulatingmaterials;Electricalsafety;Erection;Firingplants;Furnaces;Heattransferinstallations;Heaters;Hot-watersystem;Marking;Operatingconditions;Potentialequalization;Safetyrequirements;Safetysystems;Scope;Specification(approval);Switchgears;Warmairheaters;Waterheaters;Water-heatingplants
【摘要】:Thisstandardappliestotheapplicationdesignandinstallationofelectricalequipment,controlcircuitsandprotectivesystemsforfurnaceswhichareoperatedwithsolid,liquidorgaseousfuelsandtheirancillaryequipment.Itspecifiesrequirementstomeettheoperatingconditionsoffurnaces,toreducethehazardsofcombustionandtoprotecttheheatedsystemsfromdamagee.g.byoverheating.Suchfurnacesandtheelectricalequipmentmaybepartofthefollowingplantsforexample:a)Waterheatingsystemsb)Steamboilerinstallations(steamandhot-waterboilers)andheatrecoverysteamboilersNOTE1Therequirementsofthisstandardapplyaccordingtotheelectricalequipmentofelectricallyheatedsteamboilers.NOTE2SeagoingvesselsandoffshorefacilitiesaregovernedbyInternationalMaritimeLawandassucharenotwithinthescopeofthisstandard.Theserequirementsmaybeusedforsuchfacilities.c)Warmairheatersd)Hot-gasheaterse)Heatexchangersystemsf)Combustionchambersofstationaryturbinesg)Aslongasnootherstandardisapplicableforcombinedheatandpowerstationsitisrecommendedtousetherequirementsofthisstandardh)Thisstandardmayalsobeusedasreferenceforelectricalequipmentrequirementsforthermoprocessingequipment.NOTE3Therequirementsofthisstandardareapplicableinallcaseswhereanequipmentspecificstandarddoesnotspecifyarequirement.Therequirementsinthisstandardarenotapplicabletoelectricalequipmentfor:i)Nonelectricallyheatedappliancesandburnercontrolsystemsforhouseholdandsimilarpurpose;j)Furnacesusingtechnologiesforthedirectconversionofheatintoelectricalenergy;k)Combustionchambersofnon-stationaryprimemoversandturbines;l)Centraloilsupplysystemsforindividualheatingappliances;m)Furnacesusingsolidfuelsforheatingpurposesforhouseholdusewithanominalthermaloutputupto1MW;n)Furnaceswhichareusedtoheatprocessfluidsandgassesinchemicalplant.Thisstandardmaybeusedasabasisfortherequirementsplacedonelectricalequipmentforfurnaceswhichareexcludedfromitsfieldofapplication.
【中国标准分类号】:K61
【国际标准分类号】:27_060_01
【页数】:76P;A4
【正文语种】:英语


【英文标准名称】:Behaviourallanguages-Part3-2:MathematicaloperationinVHDL
【原文标准名称】:行为语言第3-2部分：VHDL中的数学运算
【标准号】:IEC61691-3-2-2001
【标准状态】:作废
【国别】:国际
【发布日期】:2001-06
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/TC93
【标准类型】:()
【标准水平】:()
【中文主题词】:VHDLS硬件说明语言;控制系统;逻辑运算;自动化;模型;数据处理
【英文主题词】:Automation;Controlsystems;Dataprocessing;Logicaloperations;Mathematicaloperations;Models;Semantics;VHDL;VHSICHardwareDescriptionLanguage
【摘要】:ThisstandardisembodiedintheMATH_REALandMATH_COMPLEXpackagedeclarations,andinthesemanticsofthestandardmathematicaldefinitionandtheconventionalmeaningofthefunctionsthatarepartofthisstandard,alongwith1.3.TheinformationinannexAisaguidetousersandimplementorsandisnotanormativepartofthisstandard,butsuggestswaysinwhichonemightusethissetofpackages.TheinformationinannexBisprovidedasaguidelineforimplementorsandisnotanormativepartofthisstan-dard,butsuggestswaysinwhichimplementorsmayimplementthisstandard.Thefunctionsinthissetofpackageswerechosenbecauseoftheirwidespreadutility,aswellasbecausetheyareneededtosupportgen-eralfloating-pointusageandtobuildothergenericpackages.
【中国标准分类号】:L74
【国际标准分类号】:35_060
【页数】:40P.;A4
【正文语种】:英语