The rack PDU manages and distributes power, and is usually installed directly on the rack, taking power from the rack power supply (branch circuit), and distributing it from an uninterruptible power supply, utility power, generator, or other auxiliary power source (either AC or. The rack PDU manages and distributes power, and is usually installed directly on the rack, taking power from the rack power supply (branch circuit), and distributing it from an uninterruptible power supply, utility power, generator, or other auxiliary power source (either AC or. Each rack must safely deliver stable electrical power to dozens of servers, switches, and storage devices while maintaining reliability, airflow efficiency, and electrical safety. Modern infrastructures typically rely on rack-level Power Distribution Units (PDUs), industrial CEE connectors, and. Data centers receive electricity from the utility grid at medium or high voltage, typically ranging from 13. 5 kV depending on the facility. This high-voltage power must be safely reduced and distributed throughout the building before it can be used by sensitive IT equipment. The. Although there are many nuances to how a rack PDU works, the basic concept is not complicated. Published in the areas of power systems and sensors.