DPA – the very best UPS design
With DPA, the UPS is modularized and each module has all the hardware and software needed for autonomous operation:
rectifier, inverter, battery converter, static bypass switch, backfeed protection, control logic, display, and mimic diagram for monitoring and control. A module’s output is not affected by failures elsewhere in the UPS. If one module is lost, the others take up its load. In other words, a multimodule system is fault tolerant and there are no single points of failure.