MIL-STD-704测试指南 part8

MIL-HDBK-704-89April2004DEPARTMENTOFDEFENSEHANDBOOKGUIDANCEFORTESTPROCEDURESFORDEMONSTRATIONOFUTILIZATIONEQUIPMENTCOMPLIANCETOAIRCRAFTELECTRICALPOWERCHARACTERISTICS28VDC(PART8OF8PARTS)ThisHandbookisforguidanceonly.Donotcitethisdocumentasarequirement.AMSCN/AAREASESSNOTMEASUREMENTSENSITIVEMIL-HDBK-704-8iiFOREWORD1.ThishandbookisapprovedforusebyallDepartmentsandAgenciesoftheDepartmentofDefense.2.Thishandbookprovidesguidanceontestproceduresfordemonstrationof28VDCutilizationequipmenttodeterminecompliancewiththeapplicableeditionofMIL-STD-704.3.MIL-HDBK-704-8isPart8inaseriesof8Parts.Part8describesthetestmethodsandprocedurestodemonstratethat28VDCutilizationequipmentiscompatiblewiththeelectricpowercharacteristicsofMIL-STD-704.TheseseriesofhandbooksandMIL-STD-704arecompaniondocuments.4.Comments,suggestions,orquestionsonthisdocumentshouldbeaddressedtoCommander,NavalAirSystemsCommand,Code4.1.4,Highway547,Lakehurst,NJ08733-5100oremailtothomas.omara@navy.mil.Sincecontactinformationcanchange,youmaywanttoverifythecurrencyofthisaddressinformationusingtheASSISTOnlinedatabaseatwww.dodssp.daps.mil.MIL-HDBK-704-8iiiCONTENTSPARAGRAPHPAGEFOREWORD......................................................................................................................ii1.SCOPE.........................................................................................................................11.1Scope.......................................................................................................................12.APPLICABLEDOCUMENTS..........................................................................................12.1General....................................................................................................................12.2Governmentdocuments..........................................................................................12.2.1Specifications,standardsandhandbooks................................................................13.DEFINITIONS....................................................................................................................13.1Acronymsanddefinitions.......................................................................................14.TESTMETHODSINFORMATION..................................................................................14.1Demonstrationofcompatibility..............................................................................14.1.1Recordingperformance...........................................................................................14.2Calibrationoftestequipment..................................................................................14.3Testmethods...........................................................................................................25.TESTMETHODS...............................................................................................................3METHODLDC101LoadMeasurements..............................................................4METHODLDC102SteadyStateLimitsforVoltage............................................9METHODLDC103VoltageDistortionSpectrum..............................................13METHODLDC104TotalRipple........................................................................20METHODLDC105NormalVoltageTransients.................................................25METHODLDC201PowerInterrupt...................................................................36METHODLDC301SteadyStateLimitsforVoltage..........................................41METHODLDC302AbnormalVoltageTransients.............................................45METHODLDC401SteadyStateLimitsforVoltage..........................................57METHODLDC501StartingVoltageTransients................................................61METHODLDC601PowerFailure......................................................................66METHODLDC602PhaseReversal....................................................................706.NOTES.......................................................................................................................756.1Intendeduse..........................................................................................................756.3Subjectterm(keyword)listing..............................................................................75TABLELDC-I.Summaryof28VDCutilizationequipmentMIL-STD-704compliancetests..................2CONCLUDINGMATERIAL......................................................................................................75MIL-HDBK-704-811.SCOPE1.1Scope.Thishandbookprovides,asguidance,testmethodsusedtodemonstratethat28VDCutilizationequipmentiscompatiblewiththeelectricpowercharacteristicsoftheapplicableedition(s)ofMIL-STD-704.Thishandbookisforguidanceonlyandcannotbecitedasarequirement.2.APPLICABLEDOCUMENTS2.1General.Thedocumentslistedbelowarenotnecessarilyallofthedocumentsreferencedherein,butarethoseneededtounderstandtheinformationprovidedbythishandbook.2.2Governmentdocuments.2.2.1Specifications,standards,andhandbooks.Thefollowingspecifications,standards,andhandbooksformapartofthisdocumenttotheextentspecifiedherein.DEPARTMENTOFDEFENSESTANDARDSMIL-STD-704DoDInterfaceStandardforAircraftElectricPowerCharacteristics(Copiesofthesedocumentsareavailableonlineathttp://assist.daps.dla.mil/quicksearchorwww.dodssp.daps.mil/orfromtheStandardizationDocumentOrderDesk,700RobbinsAvenue,Building4D,Philadelphia,PA19111-5094.)3.DEFINITIONS3.1Acronymsanddefinitions.TheacronymsanddefinitionsofMIL-STD-704areapplicabletothishandbook.4.TESTMETHODSINFORMATION4.1Demonstrationofcompatibility.Thissectioncontainsthetestmethodswhichwillensurethat28VDCutilizationequipmentiscompatiblewiththeelectricpowercharacteristicsoftheapplicableedition(s)ofMIL-STD-704,bytestingtheUnitUnderTest(UUT)inaccordancewiththetestproceduresasdescribedintestmethodsLDC101throughLDC602.4.1.1Recordingperformance.IntableLDC-I,recordtheedition(s)ofMIL-STD-704thatdefinedtheaircraftelectricpowercharacteristicsusedfortestingandtheperformanceoftheUUTforeachofthetestmethods.4.2Calibrationoftestequipment.TestequipmentandaccessoriesrequiredformeasurementinaccordancewiththishandbookshouldbecalibratedinaccordancewithanapprovedcalibrationprogramtraceabletotheNationalInstituteforStandardsandTechnology.MIL-HDBK-704-82Theserialnumbers,model,andcalibrationdateofalltestequipmentshouldbeincludedwiththetestdata.4.3Testmethods.ThetestmethodslistedintableLDC-Iareprovidedinsection5ofthishandbook.TABLELDC-I.Summaryof28VDCutilizationequipmentMIL-STD-704compliancetests.UUT:CompliancetoMIL-STD-704Edition(s):TestDates:TestMethodDescriptionPerformance(Pass/Fail)CommentsNormal,AircraftElectricalOperationLDC101LoadMeasurementsLDC102SteadyStateLimitsforVoltageLDC103VoltageDistortionSpectrumLDC104TotalRippleLDC105NormalVoltageTransientsTransfer,AircraftElectricalOperationLDC201PowerInterruptAbnormal,AircraftElectricalOperationLDC301AbnormalSteadyStateLimitsforVoltageLDC302AbnormalVoltageTransients(Overvoltage/Undervoltage)Emergency,AircraftElectricalOperationLDC401EmergencyLimitsforVoltageStarting,AircraftElectricalOperationLDC501StartingVoltageTransientsPowerFailure,AircraftElectricalOperationLDC601PowerFailureLDC602PolarityReversalMIL-HDBK-704-835.TESTMETHODSMIL-HDBK-704-84METHODLDC101LoadMeasurementsPOWERGROUP:28VoltDCAIRCRAFTELECTRICALOPERATINGCONDITION:NormalPARAMETER:LoadMeasurements1.Scope.1.1Purpose.Thistestprocedureisusedtoverifythat28voltDCpowerutilizationequipmentmeetstheloadlimits,inrushlimits,currentdistortionlimitsandcurrentspectrumlimitsthatmayberequiredbytheutilizationequipmentperformancespecificationdocument.2.Validationcriteria.Ifrequiredbytheutilizationequipmentperformancespecificationdocument,theutilizationequipmentisconsideredtohavepassediftheutilizationequipmentiswithintheloadlimits,inrushcurrentlimits,thecurrentdistortionlimit,andthecurrentspectrumlimitsspecifiedintheutilizationequipmentperformancespecificationdocument.AsnotedintableLDC101-I,theloadlimits,inrushcurrentlimits,thecurrentdistortionlimit,andthecurrentspectrumlimitsarenotspecifiedinMIL-STD-704versionsAthroughF.Theutilizationequipmentmustnotsufferdamageorcauseanunsafecondition.Note:Theutilizationequipmentperformancespecificationdocumentshouldincluderequirementsthatreducethelikelihoodoftheequipmenthavinganadverseeffectontheelectricalpowercharacteristicsoftheaircraft.Load,inrushcurrents,currentdistortionandcurrentspectrumlimitsmaybeimposedtominimizeundesirableeffectstotheelectricalpowercharacteristics.Theselimitsshouldtakeintoaccounttheutilizationequipmentpowerdraw,aircraftelectricalsystemcapacityanddistributioncharacteristics,trade-offswithweight,volume,cost,andreliabilitythatarespecifictoeachtypeofequipmentandaircraft.TABLELDC101-I.MIL-STD-704limitsforload,inrushcurrent,currentdistortionfactor,andcurrentspectrumfor28voltDCutilizationequipment.Limit704A704B704C704D704E704FInrushCurrentN/A1/N/A1/N/A1/N/A1/N/A1/N/A1/Load(VA)N/A1/N/A1/N/A1/N/A1/N/A1/N/A1/CurrentDistortionFactorN/A1/N/A1/N/A1/N/A1/N/A1/N/A1/CurrentSpectrumN/A1/N/A1/N/A1/N/A1/N/A1/N/A1/1/.LimitsforLoad,InrushCurrent,CurrentDistortionFactor,andCurrentSpectrummustbedefinedintheutilizationequipmentperformancespecificationdocumentandareuniquetoeachequipment.MIL-HDBK-704-853.Apparatus.Thetestequipmentshouldbeasfollows:a.AdjustableDCpowersupplyb.TrueRMSvoltmeterc.Powermeterd.Spectrumanalyzere.Distortionmeterf.Currenttransformerg.Oscilloscope4.Testsetup.ConfigurethetestsetupasshowninfigureLDC101-1.Measurements,exceptcurrent,mustbemadewithin10cmoftheinputpowerterminalsoftheUUT.Thecurrentmeasurementmustbetakenfromthe28voltDCconductor.5.Compliancetest.Withthepowersourceoff,installtheUUTandthestimulationandmonitoringequipmentintothetestsetupoffigureLDC101-1.Turnonthepowersourceandadjustthevoltagetothenominalsteadystatevoltageof28VDC.Iftheutilizationequipmentperformancespecificationdocument:a.Imposesinrushcurrentlimits,closethecircuitbreaker,energizingtheUUT.RecordtheinrushcurrentinthedatasheetshownintableLDC101-IIandcomparewiththelimitsofutilizationequipmentperformancespecificationdocument.AllowsufficienttimefortheUUTtowarmup.ConductaperformancetestoftheUUTaccordingtotheutilizationequipmentperformancetestprocedurestoverifythattheUUTisprovidingspecifiedperformancefornormalaircraftelectricalconditions.RepeatforeachmodeofoperationoftheUUT.b.Imposesloadlimits,energizetheUUT.AllowsufficienttimefortheUUTtowarmup.ConductaperformancetestoftheUUTaccordingtotheutilizationequipmentperformancetestprocedurestoverifythattheUUTisprovidingspecifiedperformancefornormalaircraftelectricalconditions.Recordtheload(Volt-Amps)andthevoltageinthedatasheetshownintableLDC101-IIandcomparewiththelimitsofutilizationequipmentperformancespecificationdocument.RepeatforeachmodeofoperationoftheUUT.c.Imposescurrentdistortionlimits,energizetheUUT.AllowsufficienttimefortheUUTtowarmup.ConductaperformancetestoftheUUTaccordingtotheutilizationequipmentperformancetestprocedurestoverifythattheUUTisprovidingspecifiedperformancefornormalaircraftelectricalconditions.RecordthecurrentdistortionfactorinthedatasheetshownintableLDC101-IIandcomparewiththelimitsofutilizationequipmentperformancespecificationdocument.RepeatforeachmodeofoperationoftheUUT.d.Imposescurrentspectrumlimits,energizetheUUT.AllowsufficienttimefortheUUTtowarmup.ConductaperformancetestoftheUUTaccordingtotheutilizationequipmentperformancetestprocedurestoverifythattheUUTisprovidingspecifiedperformanceforMIL-HDBK-704-86normalaircraftelectricalconditions.Recordthecurrentspectrum(currentamplitudevs.frequency)inthedatasheetshownintableLDC101-IIandcomparewiththelimitsofutilizationequipmentperformancespecificationdocument.RepeatforeachmodeofoperationoftheUUT.MIL-HDBK-704-87UnitUnderTest(UUT)AdjustableDCPowerSupplyStimulation&MonitoringEquipment(SeeNote4)+GroundPlane-GNDSeeNote110cm+-CHASSISSeeNote2CAUTIONHallEffectCurrentProbeNotes:1.Voltagemeasurementsshallbemadewithin10cmofUUTinputpowerterminals.2.CAUTION:VerifysuitabilityofpowersupplyMINUSandGROUNDconnections.3.CAUTION:Verifysuitabilityofinstrumentationinputsand/oruseappropriateattenuation.4.StimulationandMonitoringEquipmentareuserdefined.Thisfunctionalblockshallprovideappropriateinputs(stimulations)andmonitorUUToutputs(e.g.:RPM,signals,data,etc.)NormalOperation-LoadandCurrentDistortionMeasurementFigureLDC101-1(SeeNote5)TrueRMSVoltmeterPowerMeterSpectrumAnalyzerOscilloscopeDistortionMeter(SeeNote3)(SeeNote3)(SeeNote3)(SeeNote3)(SeeNote3)FIGURELDC101-1.Normaloperation-loadandcurrentdistortionmeasurement.MIL-HDBK-704-88TABLELDC101-II.SampledatasheetforLDC101loadmeasurements.ParameterMeasurementUnitPerformancePass/FailInrushCurrentAmpsVoltageVdcN/ALoad(VA)VATotalCurrentDistortion%CurrentDistortionCurrentSpectrumAttachSpectrumPlotAmplitudevs.FrequencyMIL-HDBK-704-89METHODLDC102SteadyStateLimitsforVoltagePOWERGROUP:28VoltDCAIRCRAFTELECTRICALOPERATINGCONDITION:NormalPARAMETER:SteadyStateLimitsforVoltage1.Scope.1.1Purpose.Thistestprocedureisusedtoverifythat28voltDCpowerutilizationequipmentoperatesandmaintainsspecifiedperformancewhenprovidedpowerwithvoltageatthattheNormalLowSteadyState(NLSS)limitsandtheNormalHighSteadyState(NHSS)limitsasspecifiedintheapplicableedition(s)ofMIL-STD-704.2.Validationcriteria.Theutilizationequipmentisconsideredtohavepassediftheutilizationequipmentoperatesandmaintainsperformanceasspecifiedintheutilizationequipmentperformancespecificationdocumentfornormalaircraftelectricalconditionswhensuppliedinputpowerofvoltageatthespecifiednormalsteadystatelimitsoftheapplicableeditions(s)ofMIL-STD-704andasnotedintableLDC102-I.Theutilizationequipmentmustmaintainspecifiedperformanceforalengthoftimethatconfirmstheutilizationequipmentcancontinuouslyoperateatthesteadystatevoltageandfrequencylimitsandshouldbenotlessthanthirty(30)minutesforeachofthetestconditions.Theutilizationequipmentmustdemonstratere-startatthesteadystatevoltagelimits.Theutilizationequipmentmustnotsufferdamageorcauseanunsafecondition.Note:Iftheutilizationhasexactlythesamefullperformancerequirementsforabnormalsteadystatelimitsandemergencysteadystatelimitsasrequiredforthenormalaircraftelectricalconditions,thenperformanceoftestmethodsLDC301andLDC401willconstituteperformanceofLDC102.TABLELDC102-I.MIL-STD-704normallimitsforsteadystatevoltage.NormalLimit704A704B704C704D704E704FVoltageNLSS24Vdc22Vdc22Vdc22Vdc22Vdc22VdcVoltageNHSS28.5Vdc29Vdc29Vdc29Vdc29Vdc29Vdc3.Apparatus.Thetestequipmentshouldbeasfollows:a.AdjustableDCpowersupplyb.TrueRMSvoltmeterMIL-HDBK-704-8104.Testsetup.ConfigurethetestsetupasshowninfigureLDC102-1.Measurements,exceptcurrent,mustbemadewithin10cmoftheinputpowerterminalsoftheUUT.5.Compliancetest.Withthepowersourceoff,installtheUUTandthestimulationandmonitoringequipmentintothetestsetupoffigureLDC102-1.Turnonthepowersourceandadjustthevoltagetothenominalsteadystatevoltageof28VDC.EnergizetheUUT.AllowsufficienttimefortheUUTtowarmup.ConductaperformancetestoftheUUTaccordingtotheutilizationequipmentperformancetestprocedurestoverifythattheUUTisprovidingspecifiedperformancefornormalaircraftelectricalconditions.ForeachtestconditionAthroughCnotedintableLDC102-II,theUUTmustremainforalengthoftimethatconfirmstheutilizationequipmentcancontinuouslyoperateatthesteadystatevoltagelimitsandshouldbenotlessthanthirty(30)minutes.AteachtestconditionconductaperformancetestoftheUUTaccordingtotheutilizationequipmentperformancetestprocedurestoverifythattheUUTisprovidingspecifiedperformancefornormalaircraftelectricalconditions.ForeachtestconditionshutdowntheUUTandverifythattheUUTcanbere-started.Afterre-startconductaperformancetestoftheUUTaccordingtotheutilizationequipmentperformancetestprocedurestoverifythattheUUTisprovidingspecifiedperformancefornormalaircraftelectricalconditions.Recordthevoltage,frequency,timedurationattestcondition,successful/unsuccessfulre-startandtheperformanceoftheUUTforeachtestconditioninthedatasheetshownintableLDC102-III.RepeatforeachmodeofoperationoftheUUT.Afteralltestconditionsarecomplete,adjustthevoltagetothenominalsteadystatevoltageof28VDC.ConductaperformancetestoftheUUTaccordingtotheutilizationequipmentperformancetestprocedurestoconfirmthattheUUThasnotsuffereddamageandisprovidingspecifiedperformancefornormalaircraftelectricalconditions.TABLELDC102-II.TestconditionsforsteadystatelimitsofDCvoltage.TestConditionVoltageANominalVoltageBNLSSVoltageCNHSSVoltageMIL-HDBK-704-811UnitUnderTest(UUT)AdjustableDCPowerSupplyStimulation&MonitoringEquipment(SeeNote4)+GroundPlane-GNDSeeNote110cm+-CHASSISSeeNote2CAUTIONNotes:1.Voltagemeasurementsshallbemadewithin10cmofUUTinputpowerterminals.2.CAUTION:VerifysuitabilityofpowersupplyMINUSandGROUNDconnections.3.CAUTION:Verifysuitabilityofinstrumentationinputsand/oruseappropriateattenuation.4.StimulationandMonitoringEquipmentareuserdefined.Thisfunctionalblockshallprovideappropriateinputs(stimulations)andmonitorUUToutputs(e.g.:RPM,signals,data,etc.)NormalOperation-SteadyStateLimitsforVoltageFigureLDC102-1TrueRMSVoltmeter(SeeNote3)FIGURELDC102-1.Normaloperation-steadystatelimitsforvoltage.MIL-HDBK-704-812TABLELDC102-III.SampledatasheetforLDC102steadystatelimitsforvoltage.TestParametersPerformanceConditionVoltageFrequencyTimeDurationatConditionRe-Start(Yes/No)Pass/FailAVdcHzminBVdcHzminCVdcHzminMIL-HDBK-704-813METHODLDC103VoltageDistortionSpectrumPOWERGROUP:28VoltDCAIRCRAFTELECTRICALOPERATINGCONDITION:NormalPARAMETER:VoltageDistortionSpectrum1.Scope.1.1Purpose.Thistestprocedureisusedtoverifythat28voltDCpowerutilizationequipmentoperatesandmaintainsspecifiedperformancewhensubjectedtovoltagedistortionoffrequenciesandamplitudesasspecifiedbythevoltagedistortionspectrumintheapplicableeditions(s)ofMIL-STD-704.2.Validationcriteria.Theutilizationequipmentisconsideredtohavepassediftheutilizationequipmentoperatesandmaintainsperformanceasspecifiedintheutilizationequipmentperformancespecificationdocumentfornormalaircraftelectricalconditionswhensubjectedtovoltagedistortionsasspecifiedbythevoltagedistortionspectrumintheapplicableeditions(s)ofMIL-STD-704andasnotedintableLDC103-I.Theutilizationequipmentmustmaintainspecifiedperformanceforalengthoftimethatconfirmstheutilizationequipmentcanoperatecontinuouslywhenprovidedpowerhavingvoltagedistortion.Theutilizationequipmentmustnotsufferdamageorcauseanunsafecondition.Note:ThistestmethodsubjectstheUUTtovoltagedistortionhavingfrequenciescomponentsfrom10Hzto10kHz.Thesevoltagedistortionssimulatevoltagedistortionswithinaircraftduetothecumulativeeffectsofgenerators,electricaldistributionsystemsequipments,andaircraftloads.MIL-STD-461,(RequirementsForTheControlofElectromagneticInterferenceCharacteristicsofSubsystemsandEquipment),TestMethodCS101,(ConductedSusceptibility,PowerLeads,30Hzto150kHz)isacomplimentarytest.Powerlevelsofthevoltagedistortionsdifferforthetwotestmethods.PerformanceofTestMethodLDC103ofthishandbookdoesnotrelinquishtherequirementtoperformtestMethodCS101ofMIL-STD-461,andperformanceofMethodCS101ofMIL-STD-461doesnotrelinquishtherequirementtoperformTestMethodLDC103ofthishandbook.TABLELDC103-I.MIL-STD-704limitsforvoltagedistortionspectrum.Limit704A704B704C704D704E704FVoltageDistortionSpectrumFigure7MIL-STD-704AFigure6MIL-STD-704BFigure9MIL-STD-704CFigure9MIL-STD-704DFigure8MIL-STD-704EFigure15MIL-STD-704FMIL-HDBK-704-8143.Apparatus.Thetestequipmentshouldbeasfollows:a.ProgrammableDCpowersupplyb.Variablefrequencypowersourcec.Couplingtransformerd.TrueRMSvoltmetere.Spectrumanalyzerf.(2)Inductors,50µHg.Capacitor,10µFh.Resistor,calibratedload4.Testsetup(10Hzand25Hz).ConfigurethetestsetupasshowninfigureLDC103-1voltagedistortionspectrumsetupfor10Hzand25Hz.Measurements,exceptcurrent,mustbemadewithin10cmoftheinputpowerterminalsoftheUUT.5.Compliancetest(10Hzand25Hz).WiththeprogrammableDCpowersupplyoff,installtheUUTandthestimulationandmonitoringequipmentintothetestsetupoffigureLDC103-1.TurnontheprogrammableDCpowersupplyandadjustthevoltagetothenominalsteadystatevoltageof28VDC.EnergizetheUUT.AllowsufficienttimefortheUUTtowarmup.ConductaperformancetestoftheUUTaccordingtotheutilizationequipmentperformancetestprocedurestoverif