3ph 208v Power Supply using a VFD on 230/460 Inverter Duty Baldor Motor 1

[ring1aj]

Hello,

I have 3ph 208v power supply and am wondering if I can use a VFD that i currently have on a new Baldor motor that is rated 230/460v. Do i need a 208v rated motor or can the drive work with the 230/460v inverter duty motor?

Adam

 

[jraef]

You don't say the size, but as a gross general rule, most SMALL motors rated for 230V will be OK with 208V, Baldor even has a White Paper saying that, defining "small" as 5HP and below (IIRC). But that is predicated on allowances in the motor frame for the added heat. Running on a VFD also adds heat, so I would say either/or, not both.

Instead of changing the motor, I would just get a simple buck-boost transformer ahead of the VFD and put 240V into it.


"You measure the size of the accomplishment by the obstacles you had to overcome to reach your goals" -- Booker T. Washington

 

[rhatcher]

If you provide a serial number or model number I can tell you if the motor is rated for 208V.

 

[jraef]

FYI, the paper I was referring to:

http://www.baldor.com/Shared/manuals/pr2525.pdf

The part about 208V on 230V motors is on pdf page 60.


"You measure the size of the accomplishment by the obstacles you had to overcome to reach your goals" -- Booker T. Washington

 

[waross]

AKA The Cowern Papers. An all-around good reference for motors. lps

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