Modular UPS is too important to make do with a system that isn's quite right. Liebert APS UPS is a modular, single phase output UPS, with both single and three phase input options to provide both high availability and flexibility. This UPS offering capacity on demand with flexible power modules wich allow capacity upgrades in 5 kVA/4.5kW increments up to
20 kVA UPS.
I hope this ups might be useful.