Fujitsu ETERNUS AB Series - Input Power Supply Lines; Figure 23 Example of a Power Supply Connection When a Power Distribution Unit Is Not Used; Figure 24 Dual-Line Power Supply (When Connecting to Power Sockets)

1. ETERNUS AB/HB Installation
Outlet/Socket Specifications
Site Planning Guide
48
● For Direct (No Power Distribution Unit) Connections
The following diagram shows a power supply connection example when no power distribution
units are used.
Figure 23 Example of a Power Supply Connection When a Power Distribution Unit Is Not Used
PSU: Power Supply Units
CP: Circuit Protectors
Input Power Supply Lines
It is recommended to use multiple power supply facilities in the building for power supply redun-
dancy, or divide the AC input system for the ETERNUS AB/HB into a dual system (line 0 and line 1).
Because the power supply of the ETERNUS AB/HB is configured redundantly, business can continue
even if one of the power supply lines fails. However, a single power supply facility configuration is
also allowed for the entire system optimization (including the server). When selecting a single con-
figuration, take into consideration the availability of the system.
Figure 24 Dual-Line Power Supply (When Connecting to Power Sockets)
Do
• Only connect the ETERNUS AB/HB to circuit protectors.
Line 0
CP
Distribution board Distribution board
To power supply facility To power supply facility
CP
ETERNUS
PSU PSU PSU PSU PSU PSU
Drive shelf
Drive shelf
Controller shelf
Line 1
PSU
PSU
ETERNUS
Line 1
Line 0
Power supply facility
Power distribution unit
Power supply facility