In a factory, there is a 10HP three-phase synchronous motor, which regularly operates at 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 at nominal conditions; under which it hasbeen measured that it delivers a power of approximately 7600W, witha torque on its axis of around 83.5N-m.
Its nameplate voltage is 428VLL, its stator is star wired, andits rotor is standard wired. And it is powered by a three-phasedelta transformer.
To maximize the use of the equipment, it was decided to transferthe motor to a different application, in which it is required touse a frequency variator to modify its working speed; and feed themotor from another three-phase transformer, which has a starconfiguration and a 482VLL voltage.
Determine what the motor speed will be in rpm when the VFD isset to 54.3 Hz.
Its nameplate voltage is 428VLL, its stator is star wired, andits rotor is standard wired. And it is powered by a three-phasedelta transformer.
To maximize the use of the equipment, it was decided to transferthe motor to a different application, in which it is required touse a frequency variator to modify its working speed; and feed themotor from another three-phase transformer, which has a starconfiguration and a 482VLL voltage.
Determine what the motor speed will be in rpm when the VFD isset to 54.3 Hz.