Key Digital 8400 - Manual (Page 17)

AlphaServer 8400
3.222 Alpha Servers
Step 11a


Three-Phase Expansion Components
For new system orders, or for systems shipped after June 1996:


Select additional H7263-AC/AD for systems that do not require battery back-up option
- If EPU value of 1st regulator is exceeded
- If N+1 redundancy is required
- If 2nd or 3rd power regulator is required



Select H7237-CA/CB for systems that require battery back-up option (Factory Installed)
- Includes battery plug-in-unit, one H7263-AA/AB power regulator and batteries for battery backup/UPS capability.
Must be ordered at time of system purchase if BBU functionality is required. The H7263-AA/AB mounts alongside
the standard H7263-AC/AD.



Select H7238-BA/BB for additional battery UPS (Factory Installed)
- Includes H7263-AA/AB and H7238-AA 4-pack battery option for second and third regulator support
For systems shipped prior to June 1996, select the following power options
H7263-AA/AB* Three-Phase 48 VDC power regulator with BBU capability—maximum three per cabinet. Second
regulator may be required to supply adequate power depending on configuration. Third regulator
assures N+1 power redundancy and higher availability in the event of power regulator failure. See
Power Configuration Table.
H7237-AA* Battery plug-in unit with batteries for battery backup/UPS capability—maximum one per cabinet.
Use in system cabinet and/or H9F00-BA/BB/BC expansion cabinet. Includes four batteries to support
48 V power regulator and cabling for additional H7238-AA battery options.
H7238-AA* 4-pack battery option—one required per optional 48 V power regulator to support battery
backup/UPS capability. For use only with the H7237-AA.
* Will ship as spare from Manufacturing
Battery backup I/O expansion cabinet
H9B00-AF Battery option for I/O Expansion Cabinet—fully loaded battery cabinet supports three power
regulators, provides for 60 minutes uninterruptible power (UPS). Maximum one per H9F00-
BA/BB/BC expansion cabinet.
Step 11b


Single-Phase to Three-Phase Power Upgrade


Includes new AC distribution box with attached line cord, DC subrack, one three-phase 48VDC power regulator.



If single phase power system has two power regulators, an additional three-phase 48VDC power regulator is required.
H7268-AA/AB Single-Phase to Three-Phase Upgrade Kit, Converts system to three-phase power subsystem.
-AA= 60 Hz, 208V, -AB = 50 Hz, 380/416V
Step 11c


Power Option for StorageWorks Shelves in StorageWorks Plug-in-Units


Provides N+1 power for BA660-AB, BA661-AA StorageWorks PIUs/shelves.



Occupies one slot in StorageWorks shelf.
BA35X-HG 48V DC 150W Redundant Power Supply for BA660-AB, BA661-AA—includes 48VDC jumper
cable for connecting to first power supply in StorageWorks shelf.