Whenthethree-phasebrakemotorisstarted,becausetherotationisstationary,therotatingmagneticfieldcutstherotatingmagneticfieldatarelativespeed,sothattherotatingmagneticfieldsensesahighpotentialandflowsalargecurrent.Thecurrentcreatesmagneticenergythatresiststhestator'smagneticfield.Inordertokeepthesupplyvoltagecompatiblewiththeoriginalmagnetomotivecurrent,thestatorwillalsobeincreased,evenupto4to7timestheratedcurrent,thelargecurrentiscalledthestartingcurrent.
ThebrakemotorbelongstothederivativeseriesofYseriesthree-phaseasynchronousmotor,whichbelongstothecompletelyenclosedcoldsquirrelcagetype;ItiscomposedofattachingaDCdiskelectromagneticbrakebetweentherearendcoveroftheYseriesmotorandthefan.ThefollowingSenlimotorXiaobianwillexplainthecontentofthismotorforyou.
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