【英文标准名称】:StandardPracticeforSamplingSmallGasVolumeinaTransformer
【原文标准名称】:从变压器中抽取小体积气体样品的标准实施规程
【标准号】:ASTMD3305-1994(2005)
【标准状态】:现行
【国别】:
【发布日期】:1994
【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】:D27.07
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:电气工程;电气保护设备;变压器;气体;保护设备;抽样方法;工艺
【英文主题词】:gas;samplinggas;transformer
【摘要】:Gasesmaybeformedinoil-filledelectricalequipmentasaresultoffaults.Thetypeoffaultanditsseveritymayoftenbeinferredfromthecompositionofthegases.Gassamplesaretakenfromtransformergasspacesorfromgas-collectorrelaysinorderthatthecompositionofthegassamplemaybedetermined.Innitrogen-blanketedtransformers,thegasesgeneratedbyafaultwillpartitionbetweenthegaseousandliquidphases.Ontransformerswithgas-collectorrelays,gasintheformofbubblesmaycollectinagas-collectorrelayandprovideameanstoobtainagassampleforanalysis.Donotdrawsamplesfromanenergizedinstrumenttransformer.1.1Thispracticecoversthesamplingofgasfromatransformergasspaceorfromagas-collectorrelaywherethevolumeofgasavailableissmallandwillnotpermittheuseofPracticeD2759.1.2Thispracticecoverssampling,usingagas-tightsyringeasthesamplingapparatusandcontainer.1.3Iftheapparatustobesampledisfoundtobeunderanegativepressure,theapparatuspressureshouldberaisedbytheadditionofnitrogengasuntilapositivepressureisobtained.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:K41
【国际标准分类号】:29_180
【页数】:2P.;A4
【正文语种】: