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ANSI/ASTM D149a-1997 固体电绝缘材料在工业电源频率下的介电击穿电压和介电强度的试验方法

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【英文标准名称】:TestMethodforDielectricBreakdownVoltageandDielectricStrengthofSolidElectricalInsulatingMaterialsatCommercialPowerFrequencies(10.01)
【原文标准名称】:固体电绝缘材料在工业电源频率下的介电击穿电压和介电强度的试验方法
【标准号】:ANSI/ASTMD149a-1997
【标准状态】:作废
【国别】:美国
【发布日期】:1997
【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】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:介质击穿;电气工程;试验;电绝缘;容许的;绝缘;电气试验;介电强度试验;介电强度
【英文主题词】:Dielectricbreakdown;Dielectricstrength;Dielectric-strengthtests;Electricalengineering;Electricalinsulation;Electricaltesting;Heating;Insulations;Testing
【摘要】:Thistestmethodcoversproceduresforthedeterminationofdielectricstrengthofsolidinsulatingmaterialsatcommercialpowerfrequencies,underspecifiedconditions.Unlessotherwisespecified,thetestsshallbemadeat60Hz.However,thistestmethodmaybeusedatanyfrequencyfrom25to800Hz.Atfrequenciesabove800Hz,dielectricheatingmaybeaproblem.ThistestmethodisintendedtobeusedinconjunctionwithanyASTMstandardorotherdocumentthatreferstothistestmethod.Referencestothisdocumentshouldspecifytheparticularoptionstobeused(see).Itmaybeusedatvarioustemperatures,andinanysuitablegaseousorliquidsurroundingmedium.Thistestmethodisnotintendedformeasuringthedielectricstrengthofmaterialsthatarefluidundertheconditionsoftest.Thistestmethodisnotintendedforuseindeterminingintrinsicdielectricstrength,direct-voltagedielectricstrength,orthermalfailureunderelectricalstress(seeTestMethodD3151).Thistestmethodismostcommonlyusedtodeterminethedielectricbreakdownvoltagethroughthethicknessofatestspecimen(puncture).Itmayalsobeusedtodeterminedielectricbreakdownvoltagealongtheinterfacebetweenasolidspecimenandagaseousorliquidsurroundingmedium(flashover).WiththeadditionofinstructionsmodifyingSection,thistestmethodmaybeusedforprooftesting.ThistestmethodissimilartoIECPublication243-1.AllproceduresinthismethodareincludedinIEC243-1.DifferencesbetweenthismethodandIEC243-1arelargelyeditorial.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SpecifichazardstatementsaregiveninSection.Alsosee.
【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


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Product Code:SAE ARP265
Title:Airfoil Shapes - Dimensioning of Turbine Engine (Cancelled Feb 1959)
Issuing Committee:
Scope:This Aeronautical Recommended Practice provides a standard method for locating and dimensioning the airfoil portions of parts such as blades, and vanes. This method will apply to blades, or vanes with or without a base. The forms of attachment are varied; therefore, the blade bases shown in the following figures are for illustration only. All dimensions and notes shown pertaining to the common functional point, line or plane are considered to be applied to a datum, on or off the part, irrespective of the form of attachment.【英文标准名称】:Protectiveclothing;protectionagainstliquidchemicals;determinationofresistanceofair-impermeablematerialstopermeationbyliquids
【原文标准名称】:防护服.液体化学制品的防护.透气材料抗液体渗透的测定
【标准号】:ISO6529-1990
【标准状态】:作废
【国别】:国际
【发布日期】:1990-11
【实施或试行日期】:1990-11-01
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC94
【标准类型】:()
【标准水平】:()
【中文主题词】:渗透率;服饰;防护服装;液体;化学制品
【英文主题词】:clothing;chemicals;permeability;liquids;protectiveclothing
【摘要】:
【中国标准分类号】:C73
【国际标准分类号】:0640
【页数】:8P;A4
【正文语种】:英语