110kW 800Vdc AC/DC Power Shelf for AI Data Centers
PDR-110K
110kW 800Vdc AC/DC Power Shelf for AI Data Centers
The PDR-110K is a 3RU modular 800Vdc power shelf for AI data centers. It converts a three-phase AC supply into a regulated 800Vdc bus for AI and high-density server racks in hyperscale, colocation and enterprise data centers. One shelf delivers up to 110kW from six hot-pluggable 18.5kW rectifier modules, managed by a hot-pluggable controller.
Distributing power at 800Vdc instead of a low-voltage bus reduces the current for the same power by a factor of about 15: at 110kW the shelf output carries approximately 139A (at 790Vdc), while a 52Vdc bus would need about 2,115A. Lower current allows smaller busbars and cables and reduces conduction losses in the rack. Read more about the 800 VDC architecture for AI data centers.
The shelf accepts a three-phase + PE supply from 311 to 528Vac line-to-line, 50/60Hz. Full 110kW output is available from 415 to 528Vac; from 311 to 415Vac the rating is 100kW. Output regulation accuracy is ±0.25% at 100% load, with ripple and noise ≤8Vp-p. For higher power, up to six shelves can operate in parallel with current sharing, for a total of up to 660kW.
The controller provides data center telemetry through an RJ45 Ethernet port (Redfish and SNMP northbound; PMBus/SMBus to the rectifiers), a Web GUI, three-colour status LEDs and field firmware upgrade through the bootloader — see our note on manageable power converters with PMBus and Redfish. The shelf also supports a battery backup unit (BBU) interface. Each rectifier module achieves >97% efficiency at 50 … 100% load and PF ≥0.98 at 20 … 100% load.
KEY FEATURES:
- 110kW output, regulated 800Vdc bus (100kW at 311 … 415Vac)
- 3-phase input 311 … 528Vac L-L, 50/60Hz
- 6 × 18.5kW hot-pluggable rectifier modules, >97% efficiency (50 … 100% load)
- Hot-pluggable controller: Ethernet (RJ45), Redfish / SNMP, Web GUI
- Parallel operation up to 6 shelves (up to 660kW)
- Battery backup unit (BBU) interface
- 3RU, front-to-back airflow, variable-speed fans
- Field firmware upgrade (bootloader)
- -5 … +45°C operating range, up to 3050m altitude
- MTBF ≥300,000h
- Designed to meet cULus, CE and RoHS requirements
TYPICAL APPLICATIONS:
- 800Vdc power distribution for AI and GPU server racks
- High-density racks in hyperscale and colocation data centers
- Rack-level AC/DC conversion with battery backup unit (BBU) integration
- Scalable rack power from 110kW up to 660kW with parallel shelves
Product warranty
According to Premium’s currently valid general terms and conditions.
| Part number | Input voltage range [Vac L-L] | Output voltage nom. [Vdc] | Output power max. [kW] | Rectifier modules | Height [RU] |
|---|---|---|---|---|---|
| PDR-110K | 311 … 528 | 800 | 110 | 6 × 18.5kW | 3 |
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110kW 800Vdc AC/DC Power Shelf for AI Data CentersPDR-110K
