ASTM D2140-2003 石油制绝缘油的碳类组分的标准试验方法

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【英文标准名称】:StandardTestMethodforCarbon-TypeCompositionofInsulatingOilsofPetroleumOrigin
【原文标准名称】:石油制绝缘油的碳类组分的标准试验方法
【标准号】:ASTMD2140-2003
【标准状态】:现行
【国别】:
【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(ASTM)
【起草单位】:D27.07
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:绝缘液体;试验;绝缘;电绝缘;石油;电气工程;组分;碳
【英文主题词】:carbontype;composition;electricaloils;mineraloils;oils
【摘要】:Theprimarypurposeofthistestmethodistocharacterizethecarbon-typecompositionofanoil.Itisalsoapplicableinobservingtheeffectonoilconstitution,ofvariousrefiningprocessessuchashydrotreating,solventextraction,andsoforth.Ithassecondaryapplicationinrelatingthechemicalnatureofanoiltootherphenomenathathavebeendemonstratedtoberelatedtooilcomposition.Resultsobtainedbythismethodaresimilarto,butnotidenticalwith,resultsobtainedfromTestMethodD3238.TherelationshipbetweenthetwomethodsandtheequationsusedinderivingFig.1arediscussedintheliterature.5Althoughthistestmethodtendstogiveconsistentresults,itmaynotcomparewithdirectmeasurementtestmethodssuchasTestMethodD2007.1.1Thistestmethodmaybeusedtodeterminethecarbon-typecompositionofmineralinsulatingoilsbycorrelationwithbasicphysicalproperties.Forroutineanalyticalpurposesiteliminatesthenecessityforcomplexfractionalseparationandpurificationprocedures.Thetestmethodisapplicabletooilshavingaveragemolecularweightsfrom200toabove600,and0to50aromaticcarbonatoms.1.2Carbon-typecompositionisexpressedaspercentageofaromaticcarbons,percentageofnaphtheniccarbons,andpercentageofparaffiniccarbons.Thesevaluescanbeobtainedfromthecorrelationchart,Fig.1,ifboththeviscosity-gravityconstant(VGC)andrefractivityintercept(rI)oftheoilareknown.Viscosity,densityandspecificgravity,andrefractiveindexaretheonlyexperimentaldatarequiredforuseofthistestmethod.1.3Thistestmethodisusefulfordeterminingthecarbon-typecompositionofelectricalinsulatingoilsofthetypescommonlyusedinelectricpowertransformersandtransmissioncables.Itisprimarilyintendedforusewithnewoils,eitherinhibitedoruninhibited.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:E38
【国际标准分类号】:29_040_10
【页数】:4P.;A4
【正文语种】: