Now I just need to find a mid-size UPS (between 2000 and 2800 VA) that can work on the North American 240V system.
There are plenty of server UPSes that run on 110/208, but they're not terribly cheap.
One reason they are not terribly cheap is they also are typically above the 3000 VA level. I found ONE UPS in the range I wanted, only to find no distributor had it in stock and later that the manufacturer (Liebert) had ceased production.