Installing The Power Supply - Cisco ASR 914 Manual

Installing the Cisco ASR 914 Router

Installing the Power Supply

The DC power supply provides option to connect with two different sources (dual feed); positive (+) and
negative (-) are marked on the PSU terminals.
Note
The power on voltage is -42 VDC.
Caution The power supply must be wired before plugging the power supply in the chassis. Ensure the branch circuit
breaker is turned off. Only after installing the power supply in the chassis, should the branch circuit breaker
be turned on. The branch circuit breaker must be turned off before unplugging the power supply.
Each power supply provides a dual primary input power connection.
Warning Read the installation instructions before connecting the system to the power source. Statement 10
Preventing Power Loss
Use the following guidelines to prevent power loss to the router.
• To prevent loss of input power, ensure that the total maximum load on each circuit supplying the power
• In some systems, you can use an UPS to protect against power failures at your site. Avoid UPS types
For information on power specifications, see
Power Connection Guidelines
This section provides guidelines for connecting the Cisco ASR 914 Router power supplies to the site power
source.
Warning Never defeat the ground conductor or operate the equipment in the absence of a suitably installed ground
conductor. Contact the appropriate electrical inspection authority or an electrician if you are uncertain that
suitable grounding is available. Statement 213
Warning
This product requires short-circuit (overcurrent) protection, to be provided as part of the building installation.
Install only in accordance with national and local wiring regulations. Statement 1045
supplies is within the current ratings of the wiring and breakers.
that use ferroresonant technology. These UPS types can become unstable with systems like the Cisco
ASR 914 Router, which can have substantial current draw fluctuations due to bursty data traffic patterns.
Cisco ASR 900 Series Aggregation Services Routers Data
Installing the Cisco ASR 914 Router
Installing the Power Supply
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