ANSI/ASTM D257-2007 绝缘材料的直流电阻或电导系数用试验方法

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【英文标准名称】:TestMethodsforDCResistanceorConductanceofInsulatingMaterials
【原文标准名称】:绝缘材料的直流电阻或电导系数用试验方法
【标准号】:ANSI/ASTMD257-2007
【标准状态】:现行
【国别】:美国
【发布日期】:2007-05-22
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:电导率;电气工程;电绝缘;电气测试;绝缘件;塑料;电阻;电阻器;测试
【英文主题词】:Electricalconductance;Electricalengineering;Electricalinsulation;Electricaltesting;Insulations;Plastics;Resistance;Resistors;Testing
【摘要】:Thesetestmethodscoverdirect-currentproceduresforthemeasurementofdcinsulationresistance,volumeresistance,andsurfaceresistance.Fromsuchmeasurementsandthegeometricdimensionsofspecimenandelectrodes,bothvolumeandsurfaceresistivityofelectricalinsulatingmaterialscanbecalculated,aswellasthecorrespondingconductancesandconductivities.Thesetestmethodsarenotsuitableforuseinmeasuringtheelectricalresistance/conductanceofmoderatelyconductivematerials.UseTestMethodD4496toevaluatesuchmaterials.Thisstandarddescribesseveralgeneralalternativemethodologiesformeasuringresistance(orconductance).SpecificmaterialscanbetestedmostappropriatelybyusingstandardASTMtestmethodsapplicabletothespecificmaterialthatdefinebothvoltagestresslimitsandfiniteelectrificationtimesaswellasspecimenconfigurationandelectrodegeometry.Theseindividualspecifictestmethodologieswouldbebetterabletodefinetheprecisionandbiasforthedetermination.Theproceduresappearinthefollowingsections:Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:K15
【国际标准分类号】:29_035_01
【页数】:
【正文语种】:英语