Specifications

Chapter 5. Planning 139

Power cabling: 32A at 380-415V 3-phase (international)

As shown in Figure 5-7, one 3-phase 32A wye PDU (WW) can provide power

feeds for two chassis. In this case, an appropriate 3-phase power cable is

selected for the Ultra-Dense Enterprise PDU+, which then splits the phases,

supplying one phase to each of the three PSUs within each chassis. One

3-phase 32A wye PDU can power two fully populated chassis within a rack. A

second PDU may be added for power redundancy from an alternative power

source, if the chassis is configured N+N.

Figure 5-7 shows a typical configuration with a 32A 3-phase wye supply at

380-415 VAC (often termed “WW” or “International”) N+N.

Figure 5-7 Example power cabling 32A at 380-415V 3-phase (international)

The maximum number of Enterprise Chassis that may be installed with a 42 U

rack is four, so this configuration requires a total of four 32A 3-phase wye feeds

into the rack, to provide for a fully redundant N+N configuration.

IEC320 16A C19-C20

3m power cable

40K9611 IBM DPI 32a

Cord (IEC 309 3P+N+G)

46M4002 1U 9

C19/3 C13 Switched and

monitored DPI PDU

= Power

cables