ASTM D2477-2007 商业电源频率下绝缘气体介电击穿电压和介电强度的标准试验方法

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【英文标准名称】:StandardTestMethodforDielectricBreakdownVoltageandDielectricStrengthofInsulatingGasesatCommercialPowerFrequencies
【原文标准名称】:商业电源频率下绝缘气体介电击穿电压和介电强度的标准试验方法
【标准号】:ASTMD2477-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:介电击穿;介电强度;电气工程;电绝缘材料;电绝缘;气体;绝缘;质量;测试
【英文主题词】:breakdownvoltage;dielectricstrength;gases;insulatinggases
【摘要】:Thedielectricbreakdownvoltageanddielectricstrengthofaninsulatinggasinauniformfielddependsprimarilyonthemolecularstructureofthegas.Asdifferentgasesaremixedeitherbyplanorbycontamination,anychangeindielectricbreakdownvoltageanddielectricstrengthwilldependonboththenatureandproportionoftheindividualgases.Thistestmethodusesplaneandsphericalelectrodeswhichprovideanearlyuniformfield(seeAppendix)intheareaofelectricaldischarge.Itissuitablefordeterminingthedielectricbreakdownvoltageanddielectricstrengthofdifferentgasesandmixturesthereofforresearchandapplicationevaluationsandalsoasafieldtest.AmorecompletediscussionofthesignificanceofthedielectricstrengthtestisgivenintheAppendix.1.1Thistestmethodcoversthedeterminationofthedielectricbreakdownvoltageanddielectricstrengthofinsulatinggasesusedintransformers,circuitbreakers,cables,andsimilarapparatusasaninsulatingmedium.Thetestmethodisapplicableonlytogaseswithboilingpointsbelowroomtemperatureatatmosphericpressure.1.2Thisstandardmayinvolvehazardousmaterials,operations,andequipment.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.1.3MercuryhasbeendesignatedbyEPAandmanystateagenciesasahazardousmaterialthatcancausecentralnervoussystem,kidneyandliverdamage.Mercury,oritsvapor,maybehazardoustohealthandcorrosivetomaterials.Cautionshouldbetakenwhenhandlingmercuryandmercurycontainingproducts.SeetheapplicableproductMaterialSafetyDataSheet(MSDS)fordetailsandEPA''swebsite8212;http://www.epa.gov/mercury/faq.htmforadditionalinformation.Usersshouldbeawarethatsellingmercuryand/ormercurycontainingproductsintoyourstatemaybeprohibitedbystatelaw.
【中国标准分类号】:K04
【国际标准分类号】:29_040_20
【页数】:5P.;A4
【正文语种】: