In a factory, there is a 10HP three-phase synchronous motor, which regularly operates in nominal conditions; under which
Posted: Fri Jul 01, 2022 6:09 am
In a factory, there is a 10HP three-phase synchronous motor, which regularly operates in nominal conditions; under which it has been measured that it delivers a power of approximately 7524W, with a torque on its axis of around 75.5N-m.
Its nameplate voltage is 462VLL, its stator is star wired, and its rotor is standard wired. And it is powered by a three-phase delta transformer.
To maximize the use of the equipment, it was decided to transfer the motor to a different application, in which it is required to use a frequency variator to modify its working speed; and feed the motor from another three-phase transformer, which has a star configuration and a 473VLL voltage.
Determine what the motor speed will be in rpm when the VFD is set to 50.9 Hz.
Its nameplate voltage is 462VLL, its stator is star wired, and its rotor is standard wired. And it is powered by a three-phase delta transformer.
To maximize the use of the equipment, it was decided to transfer the motor to a different application, in which it is required to use a frequency variator to modify its working speed; and feed the motor from another three-phase transformer, which has a star configuration and a 473VLL voltage.
Determine what the motor speed will be in rpm when the VFD is set to 50.9 Hz.