rotor field winding test

field winding ground test

rotor field winding

rotor field winding continuity test

rotor field winding resistance

field winding ground

field winding ground fault

field winding ground fault protection

armature winding ground test

stator winding ground test

bearing rotor test bed

blocked rotor test

divided-winding rotor

injection type rotor ground protection

locked rotor test

Locked-Rotor Test

protection against dual grounding of rotor winding

Rotor Field

rotor field coil