Cisco Systems ASR 903 manual Fan Tray, AC Power Specifications

Chapter 1 Cisco ASR 903 router Overview

Cisco ASR 903 router Features

Table 1-2	DC Power Supply Specifications
Maximum input voltage		-72 VDC
Output voltage		+12 VDC
Wire gauge for DC input power connections		12 AWG minimum for -48/-60 VDC.
		8 AWG minimum for 24 VDC.
		Connector accepts 8 AWG maximum.
Power dissipation		600 W

AC Power Specifications

Table 1-3	AC Power Supply Specifications
Part number		A900-PWR550-A
Input power specification		115VAC/ 230VAC
Input voltage		85/264 VAC
Minimum input voltage		85 VAC
Maximum input voltage		264 VAC
Minimum output voltage		12V
Maximum output voltage		12.4V
Power dissipation		600 W

Fan Tray

The fan tray modules supported on the router are:

•A903-FAN, Figure 1-4

•A903-FAN-E, Figure 1-5

The fan tray has the following hardware features:

•It provides side-to-side forced air cooling

•It provides redundant fans

•It is field replaceable

•It contains status LEDs

•It contains an alarm port with four external alarm inputs

For more information about air flow guidelines, see Air Flow Guidelines, page 2-11. For instructions on how to install the fan tray, see Installing the Fan Tray, page 3-10. For a summary of the LEDs on the fan tray, see “LED Summary” section on page 5-8

Cisco ASR 903 Router Hardware Installation Guide

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