ISO 8381-1987 以奶为基料的婴儿食品.脂肪含量的测定.鲁塞-果德勒重量分析法(参比法)
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来源:标准资料网
【英文标准名称】:Milk-basedinfantfoods;Determinationoffatcontent;Rose-Gottliebgravimetricmethod(Referencemethod)
【原文标准名称】:以奶为基料的婴儿食品.脂肪含量的测定.鲁塞-果德勒重量分析法(参比法)
【标准号】:ISO8381-1987
【标准状态】:作废
【国别】:国际
【发布日期】:1987-12
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC34
【标准类型】:()
【标准水平】:()
【中文主题词】:含量测定;化学分析;脂肪;雷瑟-固特里伯法;农产品;化学分析和试验;食品;重量分析;乳制品
【英文主题词】:foodproducts;chemicalanalysis;agriculturalproducts;determinationofcontent;roese-gottliebmethod;gravimetricanalysis;chemicalanalysisandtesting;fats;dairyproducts
【摘要】:
【中国标准分类号】:X16
【国际标准分类号】:5310;5312
【页数】:9P;A4
【正文语种】:英语
基本信息
标准名称: | 硬质合金化学分析方法 电位滴定法测定钴量 |
英文名称: | Methods for chemical analysis of hardmetals; The potentiometric method for the determination of cobalt content |
中标分类: |
冶金 >>
金属化学分析方法 >>
金属化学分析方法综合 |
ICS分类: |
冶金 >>
粉末冶金
|
发布部门: | 中国有色金属工业协会 |
发布日期: | 1985-04-24 |
实施日期: | 1986-02-01 |
首发日期: | 1985-04-24 |
作废日期: | 1900-01-01 |
主管部门: | 中国有色金属工业协会 |
归口单位: | 全国有色金属标准化技术委员会 |
起草单位: | 株州硬质合金厂 |
出版日期: | 1900-01-01 |
页数: | 3页 |
适用范围
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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 金属化学分析方法综合 冶金 粉末冶金
【英文标准名称】:High-voltagealternatingcurrentcontactorsandcontactor-basedmotor-starters
【原文标准名称】:高压交流接触器和基于接触器的电动机起动器
【标准号】:IEC60470-2000
【标准状态】:作废
【国别】:国际
【发布日期】:2000-05
【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/SC17A
【标准类型】:()
【标准水平】:()
【中文主题词】:三极;三相;短路保护;交流开关;试验;电气工程;交流电流;特性;户内电气设备;接触器;电动机起动器;附件;过载保护;合格试验;规范(验收);过载保护装置;开关设备;定义;高电压
【英文主题词】:Accessories;Alternatingcurrent;Alternating-currentswitches;Contactors;Definition;Definitions;Electricalengineering;Highvoltage;Indoorelectricequipment;Motorstarters;Overloadprotection;Overloadprotectiondevice;Properties;Qualificationtests;Short-circuitprotection;Specification(approval);Switchgear;Testing;Three-phase;Three-pole
【摘要】:ThisInternationalStandardisapplicabletoa.c.contactorsand/orcontactor-basedmotor-startersdesignedforindoorinstallationandoperationatfrequenciesuptoandincluding60Hzonsystemshavingvoltagesabove1000Vbutnotexceeding12000V.Itisapplicableonlytothree-polecontactorsandstartersforuseinthree-phasesystems,andsingle-polecontactorsandstartersforuseinsingle-phasesystems.Two-polecontactorsandstartersforuseinsingle-phasesystemsaresubjecttoagreementbetweenmanufactureranduser.Contactorsand/orstartersdealtwithinthisstandardarenotnormallydesignedtointerruptshort-circuitcurrents.Therefore,suitableshort-circuitprotection(see3.4.110.12andnote2below)formspartoftheinstallation,butnotnecessarilyofthecontactororthestarter.Inthiscontext,thisstandardgivesrequirementsfor-contactorsassociatedwithoverloadand/orshort-circuitprotectivedevices(SCPD);-startersassociatedwithseparateshort-circuitprotectivedevicesand/orwithseparateshort-circuitandintegratedoverloadprotectivedevices;-contactorsorstarterscombined,underspecifiedconditions,withtheirownshort-circuitprotectivedevices.Suchcombinations,forexamplecombinationstarters(see3.4.110.9),areratedasunits.Contactorsintendedforclosingandopeningelectriccircuitsand,ifcombinedwithsuitablerelays,forprotectingthesecircuitsagainstoperatingoverloadswhichmayoccurtherein,arecoveredinthisstandard.Thisstandardisalsoapplicabletotheoperatingdevicesofcontactorsandtotheirauxiliaryequipment.Motor-startersintendedtostartandacceleratemotorstonormalspeed,toensurecontinuousoperationofmotors,toswitchoffthesupplyfromthemotorandtoprovidemeansfortheprotectionofmotorsandassociatedcircuitsagainstoperatingoverloadsaredealtwith.Motor-startertypesincludedare-direct-on-linestarters;-reversingstarters;-two-directionstarters;-reducedkVA(voltage)starters;-auto-transformerstarters;-rheostaticstarters;-reactorstarters.Starters,theoperationofwhichdependsonthermalelectricalrelaysformotorprotectioncomplyingwithIEC60255-8,ormotor-incorporatedthermalprotectivedevicesdealtwithinIEC60034-11,donotnecessarilymeetalltherelevantrequirementsofthisstandard.Overloadrelaysforstarters,includingthosebasedonsolid-statetechnology,arecoveredbythisstandard.Thisstandarddoesnotapplyto-circuit-breaker-basedmotor-starters;-single-poleoperationofmulti-polecontactorsorstarters;-two-stepauto-transformerstartersdesignedforcontinuousoperationinthestartingposition;-unbalancedrheostaticrotorstarters,i.e.wheretheresistancesdonothavethesamevalueinallphases;-equipmentdesignednotonlyforstarting,butalsoforadjustmentofspeed;-liquidstartersandthoseofthe"liquid-vapour"type;-semiconductorcontactorsandstartersmakinguseofsemiconductorcontactorsinthemaincircuit;-rheostaticstatorstarters;-contactorsorstartersdesignedforspecialapplications.Thisstandarddoesnotdealwithcomponentscontainedincontactorsandcontactor-basedmotor-starters,forwhichindividualspecificationsexist.NOTE1ThermalelectricalrelaysarecoveredbyIEC60255-8.NOTE2High-voltagecurrent-limitingfusesarecoveredbyIEC60282-1andIEC60644.NOTE3Metal-enclosedswitchgearandcontrolgearforratedvoltagesabove1kVanduptoandincluding52kVarecoveredbyIEC60298.NOTE4DisconnectorsandearthingswitchesarecoveredbyIEC60129.NOTE5High-voltageswitchesabove1kVandlessthan52kVarecoveredbyIEC60265-1.Theobjectofthisstandardistostatea)thecharacteristicsofcontactorsandstartersandassociatedequipment;b)theconditionswithwhichcontactorsorstartersshallcomplywithreferenceto:1)their
【中国标准分类号】:K43
【国际标准分类号】:29_130_10
【页数】:155P.;A4
【正文语种】:英语