Connect DC Power to the Chassis
The chassis relies on the protective devices in the building installation to protect against short circuit,
overcurrent, and ground faults. Ensure that the protective devices comply with local and national electrical
codes.
Caution
We recommend that you occupy both the power supply slots of the fixed port routers with power supplies. In
case a power module fails, it is recommended to retain the failed power module in its slot until it is replaced
with a new power module. This recommendation ensures that the system airflow is not impacted adversely,
which may then result in the overheating of the router and its components.
Note
The supported output DC power is 930 W. To provide full output power of 930 W, the nominal voltage rating
value ranges between -48 V to -60 V, depending on the standards in various countries.
Note
The following combinations of power supplies are supported:
• PSU930W-DCPI – 930W DC, port-side intake airflow
• PSU930W-DCPE – 930W DC, port-side exhaust airflow
Step 1
Verify that the correct fuse panel is installed in the top mounting space.
Step 2
Ensure that the DC circuit is powered down (either breaker turned off or fuse pulled) and proper lockout tag out procedures
are followed. Use the cable (PID: 72-100992-02) supplied with the power supply. You can purchase power supply cord
separately from Cisco. If you prefer to use your own cable, the cable size must be 6 AWG.
Step 3
Dress the power according to local practice.
Step 4
Connect the office battery and return cables according to the fuse panel engineering specifications.
Step 5
Insert the DC connector into the DC receptacle on the power supply.
Hardware Installation Guide for Cisco 8100 Series Routers
22
Installing the Chassis
Connect DC Power to the Chassis