YS/T 540.1-2006 钒化学分析方法 高锰酸钾-硫酸亚铁铵滴定法测定钒量
作者:标准资料网 时间:2024-05-09 17:27:35 浏览:9952
来源:标准资料网
基本信息
| 标准名称： | 钒化学分析方法 高锰酸钾-硫酸亚铁铵滴定法测定钒量 |
| 英文名称： | Vanadium -- Determination of vanadium content -- Potassium permanganate-ammonium ferrous sulphate volumetric method |
| 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： |
冶金 >>
有色金属 >>
镉、钴及其合金
|
| 替代情况： | 原标准号GB/T 8639.1-1988 |
| 发布日期： | 2006-07-27 |
| 实施日期： | 2006-10-11 |
| 首发日期： | |
| 作废日期： | |
| 出版社： | 中国标准出版社 |
| 出版日期： | 2006-10-11 |
| 页数： | 3页 |
适用范围
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前言
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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 冶金 有色金属 镉 钴及其合金
Product Code:SAE AS39029/74
Title:Contacts, Electrical Connectors, Pin, Solder, Removable, Shielded, Size 12 (For MIL-C-83723 Series III, MIL-C-26482 Series 2, MIL-C-83733 and DoD-C-83527 Connectors)
Issuing Committee:Ae-8c1 Connectors Committee
Scope:No scope available.【英文标准名称】:StandardTestMethodfortheDeterminationofGassingCharacteristicsofInsulatingLiquidsUnderThermalStressatLowTemperature
【原文标准名称】:测定低温热应力下绝缘液体放气特性的标准试验方法
【标准号】:ASTMD7150-2005
【标准状态】:现行
【国别】:
【发布日期】:2005
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D27.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:低温;试验;流体;温度;绝缘液体;测定;热应力;绝缘
【英文主题词】:combustiblegases;DGA;dissolvedgases;dissolvedgas-in-oil;insulatingoil;lowtemperaturegassingcharacteristics;straygassing;transformeroil,claytreatment
【摘要】:Generationofcombustiblegasesisusedtodeterminetheconditionofoil-filledelectricalapparatus.ManyyearsofempiricalevidencehasyieldedguidelinessuchasthosegiveninIEEEC57.104,IEC60599andIEC61464.Industryexperiencehasshownthatelectricandthermalfaultedinoil-filledelectricalapparatusaretheusualsourcesthatgenerategases.Experiencehasshownthatsomeofthegasescouldformintheoilatlowtemperaturesorasaresultofcontamination,withoutanyotherinfluences.Someseverelyhydro-treatedtransformeroilssubjectedtothermalstressandoilsthatcontaincertaintypesofcontaminationmayproducespecificgasesatlowertemperaturesthannormallyexpectedfortheirgenerationandhence,falselyindicateabnormaloperationoftheelectricalapparatus.Somenewoilshaveproducedlargeamountsofgases,especiallyhydrogen,withouttheinfluenceofotherelectricalapparatusmaterialsorelectricalstresses.Thisrendersinterpretationofthedissolvedgasanalysismorecomplicated.Heatingfor164hhasbeenfoundtobeasufficientamountoftimetoreachastableandcharacteristicgassingpattern.Thismethodusesbothdryairanddrynitrogenasthesparginggas.Thisistoreflecteitheraelectricalapparatuspreservationsystemthatallowsoxygentocontacttheoiloronethatissealedfromtheoutsideatmosphere.Oilsspargedwithairgenerallyproducemuchmorehydrogenasapercentageofthetotalcombustiblegascontentascomparedtooilsspargedwithnitrogenastheseproducemorehydrocarbonsinrelationtohydrogen.1.1Thistestmethoddescribestheprocedurestodeterminethelowtemperature(120C)gassingcharacteristicsofinsulatingliquidsspecificallyandwithouttheinfluenceofotherelectricalapparatusmaterialsorelectricalstresses.Thistestmethodwasprimarilydesignedforinsulatingmineraloil.Itcanbeappliedtootherinsulatingliquidsinwhichdissolvedgas-in-oilanalysis(TestMethodD3612)iscommonlyperformed.1.2Thistestmethodisparticularlysuitedfordetectionofthephenomenonsometimesknownas"straygassing"andisalsoreferredtoinCIGRETF11B39.1.3Thistestmethodisperformedontransformerinsulatingliquidstodeterminethepropensityoftheoiltoproducecertaingasessuchashydrogenandhydrocarbonsatlowtemperatures.1.4Thistestmethoddetailstwoprocedures:1.5MethodAdescribestheprocedurefordeterminingthegassingcharacteristicsofanew,unusedinsulatingliquid,asreceived,at120Cfor164h.1.6MethodBdescribestheprocedureforprocessingtheinsulatingliquidthroughanattapulgiteclaycolumntoremoveorganiccontaminantsandotherreactivegroupsthatmayinfluencethegassingbehaviorofaninsulatingliquid,whichissuspectedofbeingcontaminated.Thisprocedureappliestobothnewandusedinsulatingliquids.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesandtodeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:E38
【国际标准分类号】:29_040_01
【页数】:4P.;A4
【正文语种】:
