3 phase power on ups

I'm looking for a recommendation for a 3 phase ups suitable for an industrial environment (water treatment). 480V, 3 phase, 60 hz and load of around 5 kva.
What I've found so far in 3 phase only starts at 40 kva and above. It's for a large valve actuator. Thanks.

Here is a 10 kva

Note: I have never used one.

http://www.geupssystems.com/10_info.php?product=sg80