Specifications
Product
Delta 18.5 kW AC/DC Power Supply Unit
Brand
Delta Electronics
Output power
18.5 kW
Efficiency
Up to 98%
Architecture
Supports the NVIDIA 800 VDC power architecture
Energy storage
Aluminium energy-storage capacitors
Function of the storage caps
Absorbs high-frequency dynamic distortion from GPU workloads
Used in
Delta 800 VDC in-row power racks for MGX-based AI systems
Overview
Delta's 18.5 kW AC/DC power supply unit is the rectifier stage of the company's 800 VDC power systems for AI factories. It converts facility AC to DC at up to 98% efficiency, and it is the PSU inside Delta's in-row power racks for MGX-based AI systems.
The distinguishing feature Delta highlights is the use of aluminium energy-storage capacitors. AI racks draw power in large, fast transients as GPUs ramp between idle and full load; the capacitor bank absorbs that high-frequency dynamic distortion so the upstream supply sees a smoother load, which is what allows the 98% efficiency figure to hold under real workload swings rather than only at steady state.
Key Benefits
Up to 98% efficiency cuts conversion losses at rack scale. 18.5 kW per unit gives high power density per PSU. Aluminium energy-storage capacitors ride through GPU load transients. Purpose-built for 800 VDC AI racks.
Applications
800 VDC AI data center power shelves and in-row power racks, MGX-based accelerated computing systems, and retrofit power upgrades in existing air-cooled or liquid-cooled data halls.
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