Cisco CAtalyst 4500 Series Installation Manual page 58

Power Supplies
The maximum total input current is 42.5A and the maximum ambient temperature
is 55 C. To determine total maximum input power to a supply, add up the active
individual module input power ratings.
these modes, given two supplies working in combined mode.
output information for these modes, given two supplies working in redundant
mode.
Table 1-9
Input
Number
1
2
3
Table 1-10
Input
Number
1
2
3
In a redundant configuration with all inputs supplied, there must be a 100 W
Note
minimum system load or the OUTPUT FAIL LED shows a false failure.
The C4500 1400 W DC Triple Input SP Power Supply requires a minimum draw
from the system that it is installed in.
Catalyst 4500 Series Switches Installation Guide
1-40
Combined Mode Power Supply Configuration
(2450 W Max Output Power)
Maximum Input Current
12.5 A @ –44 V DC
15 A @ –44 V DC
15 A @ –44 V DC
Dual Redundant Mode Power Supply Configuration
(1400 W Max Output Power)
Approximate Approximate Input
Input Current Power @ –40.5 V DC
6.25 A @ 253 W
–40.5 / –44 V DC
7.5 A @ –40.5 / 304 W
–44 V DC
7.5 A @ –40.5 / 304 W
–44 V DC
Chapter 1
Table 1-9 provides output information for
Maximum Input
Power @ –44 V DC
550 W
660 W
660 W
Approximate Input
Power @ –44 V DC
275 W
330 W
330 W
Table 1-11 shows
Product Overview
Table 1-10 provides
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