Emerson has launched what it says is the highest-capacity transformer-based Uninterruptible Power Supply (UPS) system in the industry into general availability.

The Liebert NXL 1100kVA/1100kW UPS is targeted at mid-size and large data centers. Peter Panfil, VP of global power at Emerson, said the level of operating efficiency the product offers has until now only been available in transformer-free systems.

“It also features battery ground fault isolation that ensures normal operation under battery ground fault conditions and isolates personnel working on the DC systems from hazardous AC voltage,” Panfil added.

The advantage of battery ground fault isolation is normal system operation under battery ground fault conditions, Emerson said. When this happens, the UPS does not go to bypass, which transformer-free systems do.

Emerson offers the Liebert NXL UPS in a variety of configurations, including single module, 1+N distributed bypass and N+1 central bypass. Optional matching battery cabinets can be fitted out with Alber BDSi integrated battery monitoring.