IEC 61621-1997 干燥实心绝缘材料耐高压低电流电弧放电的试验
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【英文标准名称】:Dry,solidinsulatingmaterials-Resistancetesttohigh-voltage,lowcurrentarcdischarges
【原文标准名称】:干燥实心绝缘材料耐高压低电流电弧放电的试验
【标准号】:IEC61621-1997
【标准状态】:现行
【国别】:国际
【发布日期】:1997-09
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/TC112
【标准类型】:()
【标准水平】:()
【中文主题词】:高电压;电气工程;绝缘;耐力;定义;试验;绝缘材料;电流;耐高压试验;电弧;耐电弧;电绝缘材料;电压
【英文主题词】:Arcresistance;Currents;Definitions;Electricarcs;Electricalengineering;Electricalinsulatingmaterials;Highvoltage;High-voltagetests;Insulatingmaterials;Insulations;Resistance;Testing;Voltage
【摘要】:ThisInternationalStandarddescribesatestmethodwhichcanprovidepreliminarydifferentiationbetweensimilarinsulatingmaterials,withrespecttotheirresistancetodamagewhenexposedtohigh-voltage,low-currentarcdischarges,occurringclosetotheirsurfaces.Thedischargescauselocalizedthermalandchemicaldecompositionanderosionandeventuallyaconductivepathformsacrosstheinsulatingmaterial.Theseverityofthetestconditionsisgraduallyincreased:intheearlystagesalow-currentarcdischargeisrepeatedlyinterrupted,whereasinthelaterstages,thearccurrentisraisedinsuccessivesteps.Becauseofitsconvenienceandbecauseoftheshorttimerequiredfortesting,thetestmethodisapplicableforpreliminaryscreeningofmaterials,fordetectingtheeffectsofchangesinformulationandforqualitycontroltesting.Previousexperiencewiththistest,showedacceptablereproducibilitywiththermosetmaterials.Usingthermoplastics,sometestinglaboratoriesreportunacceptablylargevariationintestresultswhichleadtotherecommendationnottousethetestforthermoplastics.NOTE-Attemptsarebeingmadetoreducethevariabilityoftheresultsoftestsonthermoplasticsbycontrollingtheelectrodepressureanddepthofpenetrationintothematerialduringthetest.Withoutsuchelectrodecontrol,testsonmanythermoplasticsmaynotbesufficientlymeaningfultobeperformed.Thistestmethodwillnot,ingeneral,permitconclusionstobedrawnconcerningtherelativearcresistancerankingsofmaterialswhichmaybesubjectedtoothertypesofarcs.Therankingofmaterialsmaydifferfromthatfoundinwettrackingtests(e.g.IEC60112,IEC60587andIEC61302)andfromtheirperformanceinservice,wheretheintensity,recurrencefrequencyandtimeofexposuretoarcdischargesareverydifferent.
【中国标准分类号】:K15
【国际标准分类号】:29_035_01
【页数】:25P.;A4
【正文语种】:英语
【原文标准名称】:干燥实心绝缘材料耐高压低电流电弧放电的试验
【标准号】:IEC61621-1997
【标准状态】:现行
【国别】:国际
【发布日期】:1997-09
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/TC112
【标准类型】:()
【标准水平】:()
【中文主题词】:高电压;电气工程;绝缘;耐力;定义;试验;绝缘材料;电流;耐高压试验;电弧;耐电弧;电绝缘材料;电压
【英文主题词】:Arcresistance;Currents;Definitions;Electricarcs;Electricalengineering;Electricalinsulatingmaterials;Highvoltage;High-voltagetests;Insulatingmaterials;Insulations;Resistance;Testing;Voltage
【摘要】:ThisInternationalStandarddescribesatestmethodwhichcanprovidepreliminarydifferentiationbetweensimilarinsulatingmaterials,withrespecttotheirresistancetodamagewhenexposedtohigh-voltage,low-currentarcdischarges,occurringclosetotheirsurfaces.Thedischargescauselocalizedthermalandchemicaldecompositionanderosionandeventuallyaconductivepathformsacrosstheinsulatingmaterial.Theseverityofthetestconditionsisgraduallyincreased:intheearlystagesalow-currentarcdischargeisrepeatedlyinterrupted,whereasinthelaterstages,thearccurrentisraisedinsuccessivesteps.Becauseofitsconvenienceandbecauseoftheshorttimerequiredfortesting,thetestmethodisapplicableforpreliminaryscreeningofmaterials,fordetectingtheeffectsofchangesinformulationandforqualitycontroltesting.Previousexperiencewiththistest,showedacceptablereproducibilitywiththermosetmaterials.Usingthermoplastics,sometestinglaboratoriesreportunacceptablylargevariationintestresultswhichleadtotherecommendationnottousethetestforthermoplastics.NOTE-Attemptsarebeingmadetoreducethevariabilityoftheresultsoftestsonthermoplasticsbycontrollingtheelectrodepressureanddepthofpenetrationintothematerialduringthetest.Withoutsuchelectrodecontrol,testsonmanythermoplasticsmaynotbesufficientlymeaningfultobeperformed.Thistestmethodwillnot,ingeneral,permitconclusionstobedrawnconcerningtherelativearcresistancerankingsofmaterialswhichmaybesubjectedtoothertypesofarcs.Therankingofmaterialsmaydifferfromthatfoundinwettrackingtests(e.g.IEC60112,IEC60587andIEC61302)andfromtheirperformanceinservice,wheretheintensity,recurrencefrequencyandtimeofexposuretoarcdischargesareverydifferent.
【中国标准分类号】:K15
【国际标准分类号】:29_035_01
【页数】:25P.;A4
【正文语种】:英语
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