Open Rack version 3 (ORV3) 1 OU 18 kW power shelves are high-efficiency 6-slot-chassis power shelves designed to enable substantial energy savings in AI servers. It includes Delta’s new 3kW power supply units (PSU), which boast over 97.5% peak efficiency and 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 power shelf conforms to the Open Rack Standard V 3.0 busbar definition to address higher power density needs. It provides 48/50V DC output voltage rather than the traditional 12V DC to reduce electricity distribution losses. The power shelf offers a maximum 18 kW power output or 15 kW with 5+1 redundancy which accommodates six 3 kW hot-pluggable power supply units.
Each unit has a 150% load capability for 20 ms to ensure protection from sudden current increases. The power shelf is scalable with extensive options of communication protocols such as PMBus over I2C and RS485 for secure monitoring and control.
