Alcatel-Lucent 7750 SR-a4, Installation Manual, Page: 104 / 232

Installing, Wiring, and Connecting a –48 VDC PSU
104 7750 SR-a4 and SR-a8 Installation Guide
Figure 34: Example of Redundant DC Power Feeds
Connecting –48 VDC Power
24670
6 7
3
4
+
_
5
3
+
_
+B a tt A
-B a tt A
+B a tt B
-B a tt B
1
2
Table 46: Redundant DC Power Feeds Description
Key Description
1 DC PSU ground
2 Terminal block
3 Disconnect device
4 DC source A
5 DC source B
6 Battery wire (negative)
7 Battery return wire (positive)
Note:
• For a fully redundant power system, you must connect at least two DC PSU modules or
one DC and one AC PSU module.
• Wires can be routed to either side of the chassis.