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Figure 3-4 International Power Setup Without Rack-Mounted UPS
Power Distribution Units (PDUs)
Two power distribution units (PDUs) are installed to provide redundant power outlets for the
components mounted in the modular cabinet. The PDUs are oriented inward, facing the
components within the rack. Each PDU is 60 inches long and has 39 AC receptacles, three circuit
breakers, and an AC power cord. The PDU is oriented with the AC power cord exiting the
modular cabinet at either the top or bottom rear corners of the cabinet, depending on the site's
power feed needs.
For information about specific PDU input and output characteristics for PDUs factory-installed
in modular cabinets, refer to “AC Input Power for Modular Cabinets” (page 44).
Each PDU in a modular cabinet has:
• 36 AC receptacles per PDU (12 per segment) - IEC 320 C13 10A receptacle type
• 3 AC receptacles per PDU (1 per segment) - IEC 320 C19 16A receptacle type
• 3 circuit-breakers
These PDU options are available to receive power from the site AC power source:
• 208 V AC, three-phase delta for North America and Japan
• 400 V AC, three-phase wye for International
Each PDU distributes site three-phase power to 39 single-phase 200 to 240 V AC outlets for
connecting the power cords from the components mounted in the modular cabinet.
The AC power feed cables for the PDUs are mounted to exit the modular cabinet at either the
top or bottom rear corners of the cabinet depending on what is ordered for the site's power feed.
42 System Installation Specifications