Voltage doubling VFD, but they start at 5 horsepower. https://www.phasetechnologies.com/voltage-doubling Says using a transformer on the input of a VFD is a bad idea.
Three doubling transformers in parallel, one per phase, might work, but so far it seems that if it involves 480V 5HP is the lower bound, overkill for the Hardinge motor that according to its plate tops out at 0.75 On Monday, June 14, 2021, 4:43:49 PM MDT, Bari <[email protected]> wrote: Maybe https://www.ebay.com/itm/254550292370 if you're in the states. A few on ebay for <$200. On 6/14/21 5:33 PM, Gregg Eshelman via Emc-users wrote: > The motor is in a Hardinge UM mill, less than 1 horsepower. It cannot be > switched to 220V. Any way to get it running off 220 volts, three or single > phase, without breaking a few banks? _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
