Removing Power Supplies; Catalyst 6880-X Switch Hardware Installation Guide - Cisco Catalyst 6880-X Hardware Installation Manual

Installing and Removing Power Supplies
Step 3 Size the power cables to the distance between the power supply and the DC power grid. If you need to cut
the cable, cut it at the end that connects to the DC power grid, remove 0.75 inch (19 mm) of insulation from
the cut ends, and attach them to the DC power system. Be sure to connect the negative cables to negative lines
and positive cables to positive lines.
Note
Step 4 Remove the three screws that hold down the safety cover for the terminal box on the front of the DC power
supply and remove the cover.
Note
Step 5 Install four cables (two positive and two negative cables) in the four terminal slots as follows:
1 Unscrew the two nuts in each of the four terminal slots.
2 Attach and crimp each lug to the end of each power cable.
3 Attach each cable lug to the two terminal posts in each slot, fasten with two nuts, and tighten to 40 in-lb
(4.5 N·m).
Note
4 Replace the safety cover on the terminal box and fasten with three screws.
Step 6 Install the four cables from the DC power supply to an DC power sources as follows:
1 If the unconnected end of each power cable is not stripped of its insulation for the last 0.75 inches (19
mm), use wire strippers to remove that amount of insulation.
2 Attach the negative cables to the negative terminals of a DC power source, and attach the positive cables
to the positive terminals of the same power source.
Note
Step 7 For the powered down circuits connected to the power supplies, turn on the power at the circuit breaker. The
Input 1 (IN1) and Input 2 (IN2) LEDs turn on each connected power supply.
Step 8 Turn the power switch on the connected DC power supplies from standby to on (from 0 to 1 as labelled on
the power switch for each power supply).
The LEDs should flash and then the Output LED should turn on in addition to the Input LEDs. If the FAULT
LED is on or flashing, call Cisco TAC for assistance.

Removing Power Supplies

Procedure
Step 1 Turn off the power to the power supply that you are removing, as follows:
a) Ensure that the power switch on the front of the power supply is set to standby (labeled as 0).
OL-30827-02
For all your power connections, if you are using cables with two different colors, use one color cable
for all positive circuits and the other color for all negative circuits.
The terminal box has four slots for four power terminals (ordered as negative [-], positive [+], positive
[+], and negative [-]). Each terminal has two nuts that you use to fasten a power cable to the terminal.
For all your power connections, if you are using cables with two different colors, use one color
cable for all positive circuits and the other color for all negative circuits.
If you are using combined power mode or power supply redundancy mode, connect all the power
supplies in the chassis to the same power source. If you are using input source redundancy mode or
full redundancy mode, connect half the power supplies to one DC power source and the other half
of the power supplies to another DC power source.
Removing Power Supplies

Catalyst 6880-X Switch Hardware Installation Guide

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