ASTM A937/A937M-2006 利用相邻的两个测试表面测定绝缘覆层层间电阻的标准试验方法

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【英文标准名称】:StandardTestMethodforDeterminingInterlaminarResistanceofInsulatingCoatingsUsingTwoAdjacentTestSurfaces
【原文标准名称】:利用相邻的两个测试表面测定绝缘覆层层间电阻的标准试验方法
【标准号】:ASTMA937/A937M-2006
【标准状态】:现行
【国别】:美国
【发布日期】:2006
【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】:A06.01
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:electricalsteel;insulatingcoating;interlaminarresistance;two-surfacetest
【摘要】:Thistestmethodisparticularlysuitableforqualitycontrolintheapplicationofinsulatingcoatings.Thistestmethodmeasurestheinterlaminarresistanceofinsulatingcoatings,asdefinedin3.1.4.Interlaminarresistanceisthemeasureoftheinsulatingqualityofthecoating.Interlaminarresistanceisreportedinunitsofkx03A9;.TheinterlaminarresistancedeterminedinaccordancewiththistestmethodisnotthesamequantitydeterminedbyTestMethodA717/A717MorTestMethodA718.Thistestmethodisparticularlyusefulforelectricalsteelscoatedwithinorganicinsulatingcoatingshavingsurfaceinsulationresistivitiesinexcessof0.3kx03A9;x00B7;cm2[30kx03A9;x00B7;mm2]whentestedusingTestMethodA717/A717M(aFranklincurrentlessthan0.02A).Thistestmethodcanreadilybeextendedtoanyrangeofinsulationresistivitythattheequipmentcomprisingthetwo-surfacetesterallows.Fortheequipmentspecifiedherein,themaximummeasurableresistanceis1200kx03A9;forthe10-x03BC;Acurrentsettingand12000kx03A9;forthe1-x03BC;Acurrentsetting;themaximumvoltageforthetestsystemis12V.Repeatreadingsonthesamesetoftwoelectricalsteellaminationsusingdifferentcontactpositions,aswellasthetestingofmultiplelaminationsfromthesamelotofelectricalsteel,arerecommended.Severalreadingsaresuggestedbecausethecoatingthicknessmayvaryacrossthesurfaceofagivenelectricalsteellamination.Additionally,thecoatingthicknessmayvaryacrossseverallaminationstakenfromthesamelotofelectricalsteel.Suchvariationsincoatingthicknessarelikelytoyieldvariationsinthemeasuredinterlaminarresistance.Therequirednumberofreadingsdependsonthenatureofthecoatingandtheaccuracyrequired.1.1Thistestmethodcoversameansoftestingtheinterlaminarresistanceofelectricallyinsulatingcoatingsasappliedtoadjacentlaminationsofflat-rolledelectricalsteel,underpredeterminedconditionsofvoltage,pressureandtemperature.Itindicatestheeffectivenessofsurfacecoatingsonelectricalsheetsteelsforlimitinginterlaminarlossesinelectricalmachinery.Theinterlaminarresistanceismeasureddirectlyinunitsofresistance(k).1.2Thistestmethodisparticularlyusefulfor,butnotlimitedto,electricalsteelscoatedwithinorganicinsulatingcoatings.1.3Thevaluesandequationsstatedincustomary(cgs-emuandinch-pound)orSIunitsaretoberegardedseparatelyasstandard.Withinthisstandard,SIunitsareshowninbrackets.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnonconformancewiththisstandard.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:K15
【国际标准分类号】:29_035_01
【页数】:7P.;A4
【正文语种】:英语