【英文标准名称】:StandardTestMethodforStabilityofInsulatingOilsofPetroleumOriginUnderElectricalDischarge
【原文标准名称】:在电气放电情况下原油来源的绝缘油的稳定性的标准试验方法
【标准号】:ASTMD6180-2005
【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】:D27.05
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:损耗因数;放电;电器放电;绝缘油;矿物油;稳定性;试验
【英文主题词】:dissipationfactor;electricaldischarge;gasformation;gassingtendency;insulatingoil;oxidationstability;stability
【摘要】:Duringthistest,insulatingoilinanevacuatedcellissubjectedtoahighvoltagedischargebetweentwoelectrodes.Thedischargegeneratesfreeelectrons.Theseelectronscollidewiththeoilmoleculescausingmanyofthemtobecomeelectronicallyexcited.Someofthesemoleculeslosethisenergyasaquantaoflightemittingfluorescentradiation.Someoftheotherexcitedmoleculesdecomposeintogases,ionizedmoleculesandfreeradicals.Thesechangescanprovideanindicationofthestabilityofoilsundertheconditionsofthistestmethod.Themeasuresofthesechangesaretheincreaseofthepressureinthetestcellandtheincreaseinthedissipationfactorofthetestspecimen.Duringthetest,thegascontentincreasesinthecellandtheconcentrationofchargecarriersincreasesintheoil.1.1Thistestmethodcoversalaboratorytechniquethatmeasuresthestabilityofnew,used,orreclaimedinsulatingoils,similartothosedescribedinSpecificationD3487inthepresenceofacontrolledelectricdischarge.Whensubjectedtothistypeofdischarge,insulatingoilsabsorbenergyandproducegasesaswellasionizedmolecules(chargecarriers).Thequantityofthesedecayproductscanbemeasuredandcanprovideanindicationofthestabilityofoilsundertheconditionsofthistest.1.2Thegasesareretainedinthedischargecellandtheirpressuremeasured.Thechargecarriersremaininthetestspecimen.Thechangeinthedissipationfactorbeforeandafterthedischargeisdetermined.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesstatedinparenthesesareforinformationonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Specificcautionarystatementsaregiveninand.
【中国标准分类号】:E38
【国际标准分类号】:29_040_10
【页数】:6P.;A4
【正文语种】: