Cisco 7600-SIP-400 - SPA Interface Processor 400 Installation Manual page 235

Chapter 5 Removal and Replacement Procedures
Figure 5-101
Input power
module
From the right side of the power supply, connect the DC-input wires to the terminal block
b.
(Figure 5-97
Note
Secure outer block cover.
c.
Note
OL-4503-26
DC-Input Wire Connections for 2700-W DC-Input Power Supply, Right Side of Power
Terminal
block cover
Power
CI SC O SY
ST EM S, IN
C
switch
Captive
installation
screw
Bay
and Figure 5-101) in this order:
Negative (-)
Positive (+)
When you tighten the terminal nuts, make sure they are snug. Do not over tighten them.
Recommended torque strength is 20 inch-pounds. Over tightening the terminal nuts can
break the terminal block (Maximum torque: 36 inch-pounds).
For proper 2800W DC-input redundant power configuration, both pairs of input wires for
one 6000W DC-input power supply must come from the same battery system (A feed); both
pairs of input wires for the other 6000W DC-input power supply must come from another
battery system (B feed).
1
2
3
IN PU T
4
OK
FA N
OU TP UT
OK
FA IL
( ) Ground
Cisco 7600 Series Router Installation Guide
Removing and Replacing the Power Supply
Power leads
attached to
terminal block
( - ) Negative
(+) Positive
( - ) Negative
(+) Positive
5-107