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11.TransferPrincipleMAY-09Editorzhouzhou(周卓)WiscomSystemCo.Ltd2.SoftwareFlowChart3.HardwarePlugComponents4.DeviceOperation
2Faultonpresentsupply.WhyTransferMotorLoadSourcesInterruptiononpresentsupply.Forpowersupplysecurity,transfertoon-sitesourcewhenstormapproaches.1.TransferPrinciple
3PlantStartUpandShutDown.Maintenance.WhyTransferMotorLoadSources(Cont.)1.TransferPrinciple
4IntroductionTomaintainplantoperationandprocesscontinuity,motorbusesmayrequiretransferfromapresent(old)sourcetoanewsource.PowerplantsIndustrialfacilities1.TransferPrinciple
5PowerPlantsAuxiliarySystem1.TransferPrinciple
6CharacteristicsofMotorBusThecoastdownperiodandresultantvoltageandfrequencydecaymaytakeseconds,andunsupervisedsourcetransfermaycausedamage.1.TransferPrinciple
7HBT(MBT)HBT:HighSpeedBusPowerTransferSystemMBT:MotorBusTransferSystem1.TransferPrinciple
8WhyUseHBTDuringimpropertransfer,mechanicaldamagemayoccurinthemotorandisprimarilycausedbyexcessiveshafttorque.1.TransferPrinciple
9MissionofHBTThetotalmissionisnotonlytomaintainprocesscontinuitybutalsotoeffectsourcetransferssoasNOTtocauseanydamagetothemotorsandloads.1.TransferPrinciple
10Two-BreakerConfiguration1.TransferPrinciple
11VD:busresidualvoltage;VS:newsourcevoltage;△U:diff.betweenVDandVSChar.ofBusResidualVoltage1.TransferPrinciple
12MotorLoadEffectsOnHBTMotorSize:Thelargerthemotor,thelongerthetimethevoltagewilltaketodecayonaninductionmotor.Loading:Thehighertheloadonmotors,thefasterthemotorbusfrequencywilldecay.1.TransferPrinciple
13MotorLoadEffectsOnHBT(Cont.)Inertia:Thehighertheinertiaofloadsonbus,themoreslowlythebusfrequencywilldecay.Lowinertialoadswillcausethephaseangletochangequickly,asthefrequencydecaysquicklyandslipfrequencyincreasesquickly.1.TransferPrinciple
14MixofS
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