Cisco CATALYST 4500 7 SLOT CHASSIS FAN NO POWER SUPPLY REDUNDANT SUPCAPABLE 规格指南

1-37

Catalyst 4500 Series Switches Installation Guide

78-14409-08

Chapter 1 Product Overview

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.

Table 1-9

provides output information for

these modes, given two supplies working in combined mode.

Table 1-10

provides

output information for these modes, given two supplies working in redundant
mode.

Note

In a redundant configuration with all inputs supplied, there must be a 100 W
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.

Table 1-11

shows

Table 1-9

Combined Mode Power Supply Configuration
(2450 W Max Output Power)

Input
Number

Maximum Input Current

Maximum Input
Power @ –44 V DC

12.5 A @ –44 V DC

550 W

15 A @ –44 V DC

660 W

15 A @ –44 V DC

660 W

Table 1-10

Dual Redundant Mode Power Supply Configuration
(1400 W Max Output Power)

Input
Number

Approximate
Input Current

Approximate Input
Power @ –40.5 V DC

Approximate Input
Power @ –44 V DC

6.25 A @
–40.5 / –44 V DC

253 W

275 W

7.5 A @ –40.5 /
–44 V DC

304 W

330 W

7.5 A @ –40.5 /
–44 V DC

304 W

330 W