The ORV3 33 kW power shelves include Delta’s new 5.5kW power supply units (PSU), which boast over 97.5% peak efficiency. The high efficiency 6-slot-chassis power shelf is specifically designed to enable substantial energy savings in AI servers. The power shelf offers a maximum 33 kW power output or 27.5 kW with 5+1 redundancy which accommodates six 5.5 kW hot-pluggable power supply units. Each unit has a 150% load capability for 20 milliseconds to ensure protection from sudden current increases. It can integrate the power management controller (PMC) with industry-leading PoE (Power over Ethernet) function to enable smart power management in AI data centers. The PMC with PoE function provides up to 1GbE Ethernet and allows PMC to work with the ORV3 power shelf for energy saving and optimal operational performance of data centers. In addition, both the power shelf and PMC can be customized in terms of hardware and firmware based on client demands to realize high energy efficiency for data centers.