PhaseShift
Senior Member
We have a brand new motor rated at 400V and 50Hz. Our supply here is a 480V 60Hz supply. I am trying to determine weather or not I can run this motor on our supply?
First thing I realized is that operating a motor designed for 50Hz on a 60Hz system will cause the motor to run 10% faster. I am o.k. with this.
Second thing I look at is the V/Hz ratio. I see that 400V/50Hz = 8 and see that 480V/60Hz = 8. Therefore both V/Hz ratios are the same and will have the same flux densities.
The thing I question, is even know the V/Hz ratios are the same do I have to worry about operating the motor within the +/- 10% value of the nameplate rating? Will opeating this motor at 480V (+20%) cause damage to the motor?
Will I be delivering more torque, by operating at a higher voltage, or is torque striclty dependent on the V/Hz ratio?
First thing I realized is that operating a motor designed for 50Hz on a 60Hz system will cause the motor to run 10% faster. I am o.k. with this.
Second thing I look at is the V/Hz ratio. I see that 400V/50Hz = 8 and see that 480V/60Hz = 8. Therefore both V/Hz ratios are the same and will have the same flux densities.
The thing I question, is even know the V/Hz ratios are the same do I have to worry about operating the motor within the +/- 10% value of the nameplate rating? Will opeating this motor at 480V (+20%) cause damage to the motor?
Will I be delivering more torque, by operating at a higher voltage, or is torque striclty dependent on the V/Hz ratio?