What to purchase

[lweems]

We are looking to replace an outdated Liebert 3 phase UPS system with a more modern solution.  The Liebert is a 125kVA and is at 13% load with our current hardware.  I am thinking we can get away with a 20 - 30 kVA system since we have a standby generator and we would only need to keep the equipment up for < 2 minutes before the generator kicks in.  I was looking at the Symmetra PX 30kW but my lack of knowledge on this unit and more familiar with a standard rack UPS keeps my brain from figuring out how to attach a PDU for our existing racks.  Also the Liebert is in a separate room than our racks that this would need to power.  Does Schneider have a tradional UPS rack that would provide the same output but that isn't a 3 phase?   What would be some other recommendations that we can look into?