Open rotor versus locked rotor current for wound rotor motor
Open rotor versus locked rotor current for wound rotor motor
(OP)
Hello,
I have a wound rotor motor, 75 Hp. On start up, the stator coils are energized with the rotor stationary. Then a drum switch is used to allow rotor current and thereby start the motor. The stator draws very little current while the rotor is open circuited. But if I were to remove the rotor from the motor frame and then energize the circuit, I would destroy the windings. What is the difference here? Why doesn't the open rotor destroy the stator?
thanks
EE
I have a wound rotor motor, 75 Hp. On start up, the stator coils are energized with the rotor stationary. Then a drum switch is used to allow rotor current and thereby start the motor. The stator draws very little current while the rotor is open circuited. But if I were to remove the rotor from the motor frame and then energize the circuit, I would destroy the windings. What is the difference here? Why doesn't the open rotor destroy the stator?
thanks
EE





RE: Open rotor versus locked rotor current for wound rotor motor
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RE: Open rotor versus locked rotor current for wound rotor motor