ABB’s Xtra VFI /double conversion mode delivers maximum efficiency by dynamically adjusting the DPA 500 UPS configuration to match the load. In Xtra VFI /double conversion mode, the UPS automatically configures the number of modules that are active to match the load power requirements. Modules that are not needed are switched to standby, ready to transfer to active mode if the load increases. The efficiency improvements achieved by this mode of operation are especially significant in low-load conditions.
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