System Description; True Modularity Up To 3 Mw; True Parallel Architecture; Xtra Vfi Double Conversion Mode - ABB Conceptpower DPA 500 Operating Manual

1 System description

ABB's Conceptpower DPA 500 is a high-power, modular and transformer-free UPS system for
organizations who need zero downtime. The UPS is built using true online double conversion technology
and provides low cost of ownership.

1.1 True modularity up to 3 MW

Now you can have a UPS size to exactly fit your needs: the Conceptpower DPA 500 is the only modular
UPS on the market that can easily be scaled up to 3MW of clean, reliable power. This scalability means
that there is no need to over-specify the original configuration as power modules can simply be added,
as needed, in the future.

1.2 True parallel architecture

Reliability and availability are ensured by the Conceptpower DPA 500's proven Decentralized Parallel
). Each module contains all the hardware and software required for full system
Architecture (DPA TM
operation. They share no common components. Each UPS module has its own independent static
bypass, rectifier, inverter, logic control, control panel, battery charger and batteries. With all the critical
components duplicated and distributed between individual units, potential single points of failure are
eliminated.

1.3 Xtra VFI double conversion mode

Xtra VFI double conversion mode is a complementary feature to enhance the double conversion
efficiency of the UPS when load power is low compared to total UPS system capacity. 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.
Modifications reserved
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