Global site

ABB's website uses cookies. By staying here you are agreeing to our use of cookies. Learn more

Xtra VFI operating mode

Xtra VFI mode is a smart way to minimize losses and improve efficiency safely when running in double conversion mode.

When Xtra VFI mode is enabled, the UPS automatically adjusts the number of active modules according to the load power requirements. Modules that are not needed are switched to a standby state of readiness, primed to kick in and transfer to active mode if the load increases. The efficiency improvements achieved by this mode of operation are especially significant when the load is less than 25 percent of full UPS system capacity.
The figure shows how the Xtra VFI operating mode can enhance efficiency when running at a low load level for a Conceptpower DPA 500 modular UPS system with 10 UPS modules (100 kW) and total available capacity of 1 MW.

Key features

Downloads and links