Three-phaseasynchronousmotorTriple-phaseasynchronousmotorIsakindofinductionmotor,bysimultaneousaccess380VThree-phaseACcurrent(phasedifference120Aclassofelectricmotorspoweredbydegrees.Becausetherotorandstatorrotatingmagneticfieldrotateinthesamedirectionandatdifferentspeeds,thereisasliprate,soitiscalledthree-phaseasynchronousmotor.
Whenthethree-phaseACasynchronousmotorisworking,itscurrentexceedstheratedvalue,wecallitovercurrent;Ifthetimeistoolong,itwillcausethemotortooverheatanddamage,soweneedtotakenecessaryprotectivemeasures.HereisasimpleunderstandingwithSenliMotorXiaobian!
Inproduction,thecommonlyusedthree-phaseAC,ifthereisnospecialrequirements,generallyuseACmotor,mainlybecausethethree-phaseACasynchronousmotorhasasimplestructure,robustanddurable,andreliablework,easymaintenance,butalsohasthedisadvantagethatthespeedismoredifficult,soweareoftenusedformechanicalcharacteristicsofhardandnospecialrequirementsofthegeneralproductionmachinerydrag.
Duringtheoperationofthemotor,therearetwokindsofheatingphenomenon:thewholemachineheatingandlocalheating.ThefollowingSenlimotorXiaobianwilltakeyoutoasimpleanalysisofthereasonsfortheheatingfailureofthree-phaseACasynchronousmotor.
Theuseofthree-phaseasynchronousmotorsisverycommon,inmanyindustries,areusedasapowersource,SenliMotorXiaobiantodaywillgiveyouabriefintroductiontothethreestartingmethodsofthree-phaseasynchronousmotors,everyoneunderstand.
Weoftensaythattheasynchronousmotorvoltagelossprotection,infact,referstowhenthecircuitislowerthantheratedvoltageorpowerfailuretotakethecorrespondingprotectioneffect.Three-phaseasynchronousmotormanufacturerssaythatthemotorneedstorestartthecircuitafterthelossofvoltagetorunagain,soastoavoidsafetyaccidents.