5-55
Cisco 7600 Series Router Installation Guide
OL-4503-26
Chapter 5 Removal and Replacement Procedures
Removing and Replacing the Power Supply
Note For proper 2700 W DC-input redundant power configuration, all two pairs of input wires for one 2700W
DC-input power supply must come from the same battery system (A feed); all two pairs of input wires
for the other 2700 W DC-input power supply must come from another battery system (B feed).
Note For multiple DC input power supply, each DC input must be protected by dedicated circuit breaker or
fuse. The circuit breaker or fuse should be sized according to the power supply input rating and local or
national electrical code requirements.
Figure 5-60 DC-Input Front Panel for 2700-W DC-Input Power Supply
Warning
Power supply captive installation screws must be tight to ensure protective grounding continuity.
Step 5 Remove the four screws securing the terminal block cover, and slide the cover off of the terminal block
(
Figure 5-60).
Step 6 Attach the appropriate lugs to the DC-input wires. The maximum width of a lug is 0.600 inch (15.2 mm).
The wire should be sized according to local and national installation requirements. Use only copper wire.
1 Captive installation screw 7 Cable holder cover
2 DC power cable terminal block 8 Cable holder
3 Status LEDs 9 Tie-wrap
4 DC power cable terminal block cover 10 Cable holder
5 Cable holder cover 11 Tie-wrap
6 Ground
119629
PWR-2700-DC/6
-VE-1
-VE-1
-VE-2
-VE-2
IN
P
U
T1
O
K
48V
-60V
=40A
IN
P
U
T2
O
K
48V
-60V
=40A
FA
N
O
K
O
UTP
U
T
FA
IL
ALL FASTENERS M
UST BE FULLY ENGAGED
PRIOR TO OPERATING THE POW
ER SUPPLY
3
2
6
4
10
1
8
5
7
11
9
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