NonStop NS2200 Series Planning Guide

Figure 58 (page 190) shows the AC power feed cables from the bottom of the cabinet for the
three-phase PDU when the optional UPS and ERM are installed.
Figure 58 Bottom AC Feed With UPS and ERM Installed, Three-Phase
Each PDU is wired to distribute the load segments to its receptacles.
CAUTION: If you are installing NonStop NS2200 system enclosures in a rack, balance the current
load among the available load segments. Using only one of the available load segments, especially
for larger systems, can cause unbalanced loading and might violate applicable electrical codes.
Connecting the two power plugs from an enclosure to the same load segment causes failure of the
hardware if that load segment fails.
PDU Strapping Configurations for NonStop NS2200 Systems in G2 Racks
PDUs are available in four static strapping configurations that are factory-installed in a modular
cabinet. The specific PDU strapping configuration for a particular site depends on the type and
voltage of AC power at the intended installation site for the system. For information on the PDUs
supported for an NonStop NS2200 system, see “AC Input Power for Modular Cabinets in G2
Racks” (page 190).
AC Input Power for Modular Cabinets in G2 Racks
This subsection provides information about AC input power for NonStop NS2200 modular cabinets
and covers these topics:
Single-Phase Power Specifications
• “North America and Japan: 200 to 240V AC, Monitored Single-Phase PDU Power” (page 191)
• “International: 200 to 240V AC, Monitored Single-Phase PDU Power” (page 191)
• “Branch Circuits and Circuit Breakers, Monitored Single-Phase PDUs” (page 192)
• “North America and Japan: 200 to 240V AC, Modular Single-Phase PDU Power” (page 192)
• “Branch Circuits and Circuit Breakers, Modular Single-Phase PDUs” (page 192)
• “Circuit Breaker Ratings for Single-Phase UPS” (page 193)
Three-Phase Power Specifications
• “North America and Japan: 200 to 240V AC, Three-Phase PDU Power” (page 195)
• “International: 380 to 415V AC, Three-Phase PDU Power” (page 195)
190 Power Configurations for NonStop NS2200 Systems in G2 Racks