Using a European single phase motor in an American system.

[DalyPat1]

Hi, I am wondering if a single phase, 230 volt, 50 hertz motor could be used in an American system.

My first question is would there be any problem connecting the motor to the two ‘hot’ phases of the American system to get the 230 volts. I am unsure whether the fact that it is designed to be connected between a live and a neutral would have any difference than being connected to two lives.

My second question is regards to the change in frequency from my research increasing the frequency from 50 hertz to 60 hertz will result in a 20% increase in synchronous speed. It is my understanding that this increase in speed will result in a decrease in torque but I am not sure how much it will decrease the torque. It would be extremely desirable to keep as close as possible to the original torque as the motor is controlling a pump and I don’t want to alter the performance of the pump greatly.

This is my first time on a forum so I hope my question are worded properly.

 

[waross]

No problem running the motor. The pump may have issues. The motor will output the same torque but run faster. from about 1450 RPM up to about 1750 RPM. A centrifugal pump will demand such a greater torque at the faster speed as to quickly destroy the motor. A positive displacement pump may work.
The rated 50 Hz voltage should be multiplied by 6/5 to get the proper 60 Hz voltage.

Bill
--------------------
"Why not the best?"
Jimmy Carter

 

[itsmoked]

Have you seen this FAQ?
faq237-1224

Keith Cress
kcress -

http://www.flaminsystems.com