Motor nameplate 2 HP, 230V, 3Ph connecting to 208V, 3Ph power source

[marcosgue]

Hello, is this possible feed this motor from 208V, 3Ph?which are the main issue if the power don't match with manufacture nameplate?

 

[don_resqcapt19]

The rule of thumb is you can use it on a voltage source no more than 10% less than the nameplate voltage. The would be 207 volts, but remember that the 208 volts is a nominal voltage system and the actual voltage can be below 208 volts.
That being said it is a common practice to use a 230 volt motor on a 208 volt system.

 

[marcosgue]

Thank you Don Ok, any issue with the rpm? Or better recomendation to use back boost transfomer?the location of this motor is a pump inside the AHU in the roof.

 

[don_resqcapt19]

The RPM should be fine. Best answer would be to ask the motor manufacturer.

 

[MTW]

Slow down and read the tag. It says right on it, usable at 208V.

 

[Tulsa Electrician]

As mentioned

 

[winnie]

That motor is useable at 208V. It will run at higher current and have lower starting/peak torque. At rated voltage and rated torque, it will operate at 1760 RPM. At 208V if you run it at full rated torque, I'd expect it to operate between 1750 and 1755 RPM (a tiny bit slower). You won't be able to take advantage of the motor 'service factor', and you will need to be careful that the voltage doesn't fall much below 208V.

If the motor is being lightly loaded (say operating at 0.5-1Hp rather than the full 2Hp), then the motor might actually be slightly more efficient than being run at 230V.

 

[marcosgue]

Thanks a lot for all your advice, dealing with motors isn't common in my Company and the better is learning something new everyday.