【英文标准名称】:Safetyoftransformers,reactors,powersupplyunitsandcombinationsthereof.Particularrequirementsandtestsforconstantvoltagetransformersandpowersupplyunitsforconstantvoltage
【原文标准名称】:变压器,反应器,供电机组及其组合产品的安全性.恒压变压器和恒压供电机组的特定要求和试验
【标准号】:BSEN61558-2-12-2011
【标准状态】:现行
【国别】:英国
【发布日期】:2011-05-31
【实施或试行日期】:2011-05-31
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Applications;Circuits;Definitions;Dimensioning;Electricalengineering;Electricalsafety;Firesafety;Isolatingtransformers;Magnetic;Mainstransformers;Outputvoltage;Powersupplysystem;Protectionagainstelectricshocks;Safetyisolatingtransformers;Short-circuitprotection;Small-powertransformers;Stabilizingdevice;Supplyvoltages;Testing;Transformers
【摘要】:ThispartofIEC61558dealswiththesafetyofconstantvoltagetransformersforgeneralapplicationsandpowersupplyunitsforconstantvoltageforgeneralapplications.Constantvoltagetransformersincorporatingelectroniccircuitsarealsocoveredbythisstandard.voltagetransformersforgeneralapplicationsandpowersupplyunitsforconstantvoltageforgeneralapplications.Thispartisapplicabletostationaryorportable,single-phaseorpolyphase,air-cooled(naturalorforced),independentorassociateddry-type:–constantvoltageauto-transformers;–constantvoltageseparatingtransformers;–constantvoltageisolatingtransformers;–constantvoltagesafetyisolatingtransformers.Thewindingsmaybeencapsulatedornon-encapsulated.Thisstandardisapplicabletotransformersandpowersupply(linear)withinternaloperatingfrequenciesnotexceeding500Hz.
【中国标准分类号】:K41
【国际标准分类号】:29_180
【页数】:24P.;A4
【正文语种】:英语


【英文标准名称】:StandardTestMethodforMeasurementofCoatingThicknessesbytheMagneticMethod:NonmagneticCoatingsonMagneticBasisMetals
【原文标准名称】:用磁性法测量磁性基底金属的非磁性镀层厚度的标准试验方法
【标准号】:ASTMB499-1996(2002)
【标准状态】:现行
【国别】:
【发布日期】:1996
【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】:B08.10
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:非磁性;覆层;金属的;磁的;测量;厚度;金属;测量技术
【英文主题词】:coatingthickness;coatings;magneticmethod;nonmagneticcoatings;thickness;thicknesstesting;NumberCode17.040.20(Propertiesofsurfaces)
【摘要】:Thethicknessofacoatingisoftencriticaltoitsperformance.Formostnonferrouscoatingsonsteel,themagneticmethodisreliableformeasuringcoatingthicknessnondestructivelyandissuitableforspecificationacceptancetestingandSPC/SQCapplications.Thetestmethodrequiresthatthemagneticpropertiesofthesubstrateusedduringthecalibrationbethesameasthatofthetestspecimen.1.1Thistestmethodcoverstheuseofmagneticinstrumentsforthenondestructivemeasurementofthethicknessofnonmagneticcoatingsoverferrousorothermagneticbasemetals.Note18212;Autocatalyticallydepositednickel-phosphorusalloyscontainingmorethan8%phosphorusaresufficientlynonmagnetictobemeasuredbythistestmethod,aslongasthemeasurementismadepriortoanyheattreatment.1.2Theseinstrumentsmeasureeitherthemagneticattractionbetweenamagnetandthebasismetal,asinfluencedbythepresenceofthecoating,orthereluctanceofamagnetic-fluxpathpassingthroughthecoatingandthebasismetal.1.3MeasurementsmadeinaccordancewiththistestmethodwillbeincompliancewiththerequirementsofISOInternationalStandard2178asprintedin1982.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A29
【国际标准分类号】:17_040_20
【页数】:4P.;A4
【正文语种】: