Filter
Top Products
3-19
Cisco ASR 903 Router Hardware Installation Guide
OL-25178-05
Chapter 3 Installing the Cisco ASR 903 Router
Installing the Power Supply
Caution To avoid erroneous failure messages, note the current configuration of all interfaces before
you remove or replace an interface module, and allow at least 2 minutes for the system to
reinitialize after a module has been removed or replaced. This time is recommended in order
to allow for synchronization between components within the interface module and for
synchronization with the standby RSP.
Installing the Power Supply
The Cisco ASR 903 Router router provides the choice of two different power supplies:
• DC power—19.2VDC to -72VDC
The DC power supply uses 3 position terminal block-style connector with positive latching/securing
and labeled connections for +24/48V, GRD, -24/48V. The terminal block connector is of suitable
size to carry the appropriate AWG wire size to handle the input current of the power supply. No
ON/OFF switch is provided.
• AC power—85VAC to 264VAC
The AC power supply has an IEC 320-type power receptacle and a 15 Amp service connector. You
can use standard right angle power cords with the AC power supply. The power supply includes a
power cord retainer. No ON/OFF switch is provided.
Each power supply provides a single primary input power connection. You can install dual power
supplies for redundancy.
Warning
Read the installation instructions before connecting the system to the power source.
Statement 10
Note Products that have an AC power connection are required to have an external surge protective device
(SPD) provided as part of the building installation to comply with the Telcordia GR-1089 NEBS
standard for electromagnetic compatibility and safety.
Caution Do not use interface module and power supply ejector handles to lift the chassis; using the handles to
lift the chassis can deform or damage the handles.
The following sections describe the Cisco ASR 903 Router power supplies:
• Preventing Power Loss, page 3-20
• Power Connection Guidelines, page 3-20
• Installing the DC Power Supply, page 3-21
• Removing and Replacing the DC Power Supply, page 3-26
• Installing the AC power Supply, page 3-27