Table of Contents
Advertisement
Figure 2-17 Plugging order
2.3 Bulk power assembly
The Power 595 system employs a universal front-end power system. It can accept nominal ac
inputs from 200 V to 480 V at 50 or 60 Hz and converts this to a main isolated 350 V dc
nominal bulk power. The Bulk Power Assembly (BPA) holds the bulk power components.
The primary system rack and powered Expansion Rack always incorporate two bulk power
assemblies for redundancy. These provide 350 V dc power for devices located in those racks
and associated nonpowered Expansion Racks. These bulk power assemblies are mounted in
front and rear positions and occupy the top 8U of the rack. To help provide optimum system
availability, the bulk power assemblies should be powered from separate power sources with
separate line cords.
The Power 595 has both primary and redundant Bulk Power Assemblies (BPAs). The BPAs
provide the prime power conversion and dc distribution for devices located in the POWER6
595 CEC rack. They are comprised of the following individual components, all of which
support concurrent maintenance and require no special tools:
Table 2-4 BPA components
Component
Bulk power controller (BPC)
Bulk power distributor (BPD)
Bulk power enclosure (BPE)
Plug Order: n
Plug Order: n
Destination: A0n
Destination: A0n
Standard Double
Standard Double
barrel mode
barrel mode
4
4
4
4
Upper Wide Slot
Upper Wide Slot
Upper Wide Slot
Upper Wide Slot
Upper
Upper
2
2
2
2
Narrow Slot
Narrow Slot
3
3
3
3
Bottom Wide Slot
Bottom Wide Slot
Bottom Wide Slot
Bottom Wide Slot
Bottom
Bottom
1
1
1
1
Narrow Slot
Narrow Slot
Node P9
Node P9
Node P9
Definition
Is the BPA's main power and CEC controller.
Distributes 350 V dc to FRUs in the system frame, including the
Air Moving Devices and Distributed Converter Assemblies. A
BPA has either one or two BPDs.
Is the metal enclosure containing the BPA components.
Chapter 2. Architectural and technical overview
A05
A05
A05
A05
A01
A01
A01
A01
A05
A05
A05
A05
A01
A01
A01
A01
57
Advertisement
Table of Contents
