SL/T 200.09-1997 干部职务名称代码
时间:2024-05-14 03:00:53 来源: 标准资料网 作者：标准资料网 阅读：8709
基本信息
| 标准名称： | 干部职务名称代码 |
| 中标分类： |
|
| 发布日期： | 1997-08-22 |
| 实施日期： | 1996-10-01 |
| 首发日期： | |
| 作废日期： | |
| 出版日期： | |
| 页数： | 4页 |
适用范围
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前言
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引用标准
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所属分类：
【英文标准名称】:Powertransformers-Part2:Temperatureriseforliquid-immersedtransformers
【原文标准名称】:电力变压器.第2部分:液浸变压器的温升
【标准号】:IEC60076-2-2011
【标准状态】:现行
【国别】:国际
【发布日期】:2011-02
【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/TC14
【标准类型】:()
【标准水平】:()
【中文主题词】:风冷系统;阻气门;扼流圈;冷却剂;冷却;定义(术语);电气工程;加热;电感器;绝缘油;液冷系统;测量;测量技术;油冷系统;油浸式变压器;使用条件;性能;性能试验;电力变压器;合格试验;额定功率;安全性工程;短路损失;符号;温度;温度极限;温度测量;温升;试验;三相变压器;公差(测量);变压器;电压测量
【英文主题词】:Air-cooledsystems;Chokes;Chokes(electric);Coolants;Cooling;Definitions;Electricalengineering;Heating;Inductors;Insulatingoils;Liquid-cooledsystems;Measurement;Measuringtechniques;Oil-cooledsystems;Oil-immersedtransformers;Operatingconditions;Performance;Performancetests;Powertransformers;Qualificationtests;Ratedpower;Safetyengineering;Shortcircuitlosses;Symbols;Temperature;Temperaturelimit;Temperaturemeasurement;Temperaturerises;Testing;Three-phasetransformers;Tolerances(measurement);Transformers;Voltagemeasurement
【摘要】:
【中国标准分类号】:K41
【国际标准分类号】:29_180
【页数】:95P;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodforPrecipitatedSilica-SurfaceAreabyMultipointBETNitrogenAdsorption
【原文标准名称】:用多点布-埃-特氮气吸附法对沉积二氧化硅表面面积的测试方法
【标准号】:ASTMD1993-2003(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:2003
【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】:D11.20
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:nitrogenadsorptionsurfacearea;precipitatedhydratedsilica;silicas;surfacearea;BET(Brunauer,Emmett,andTeller)surfacearea;Gasadsorption;Hydratedsilica;Nitrogenadsorptionsurfacearea;Precipitatedhydratedsilica;Silica;Surfaceanalys
【摘要】:Thistestmethodisusedtomeasurethesurfaceareaofprecipitated,hydratedsilicasthatisavailabletothenitrogenmoleculeusingthemultipoint(B.E.T.)method.Solidsadsorbnitrogenand,underspecificconditions,theadsorbedmoleculesapproachamonomolecularlayer.ThequantityinthishypotheticalmonomolecularlayeriscalculatedusingtheBETequation.Combiningthiswiththeareaoccupiedbythenitrogenmoleculeyieldsthetotalsurfaceareaofthesolid.Thistestmethodmeasurestheestimatedquantityofnitrogeninthemonomolecularlayerbyadsorptionatliquidnitrogentemperatureandatseveral(atleastfive)partialpressuresofnitrogen.Beforeasurfaceareadeterminationcanbemadeitisnecessarythatthesilicabestrippedofanymaterialwhichmayalreadybeadsorbedonthesurface.Thestrippingofadsorbedforeignmaterialeliminatestwopotentialerrors.Thefirsterrorisassociatedwiththeweightoftheforeignmaterial.Theseconderrorisassociatedwiththesurfaceareathattheforeignmaterialoccupies.1.1ThistestmethodcoversaprocedurewhichisusedtomeasurethesurfaceareaofprecipitatedhydratedsilicasbytheconventionalBrunauer,Emmett,andTeller(BET)theoryofmultilayergasadsorptionbehaviorusingmultipointdeterminations,similartothatusedforcarbonblackinTestMethodsD4820.Thistestmethodspecifiesthesamplepreparationandtreatment,instrumentcalibrations,requiredaccuracyandprecisionofexperimentaldata,andcalculationsofthesurfacearearesultsfromtheobtaineddata.1.2Thistestmethodisusedtodeterminethenitrogensurfaceareaofprecipitatedsilicaswithspecificsurfaceareasintherangeof1to50hm2/kg(10to500m2/g).1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Theminimumsafetyequipmentshouldincludeprotectivegloves,sturdyeyeandfaceprotection,andmeanstodealsafelywithaccidentalmercuryspills.
【中国标准分类号】:G13
【国际标准分类号】:71_060_20
【页数】:3P.;A4
【正文语种】:英语