Disconnecting Dc Power - Cisco NCS 4000 Series Hardware Installation

Disconnecting DC Power

Procedure
Step 1 Power off the circuit breaker assigned to the DC power source you are disconnecting.
Warning
Step 2 Remove the clear plastic safety covers that fit over the DC power connection terminal studs.
Warning
Step 3
Disconnect the DC power cables from their terminals in the following order and note the color of each cable:
a) Negative (PWR) cables first.
b) Positive (RTN) cables last.
Step 4
Repeat Step-1 through Step-3 for the other power module distribution that needs to be removed.
Disconnecting DC Power
If it becomes necessary to disconnect all DC power from the chassis, follow these steps:
This procedure describes how to disconnect DC power from all power modules in a single DC power tray.
Note
The procedure is the same for each DC power tray, if more than one is installed.
If only one power tray is installed, performing the following procedure turns off all power to the chassis.
Caution
Procedure
Step 1 Set the power tray switch to the OFF (0) position.
Step 2
Power off (0) the circuit breaker assigned to the DC power source you are disconnecting.
Warning
Step 3 Remove the clear plastic safety covers that fit over the DC power connection terminal studs.
Warning
Step 4 Disconnect the DC power cables from their terminals in the following order and note the color of each cable:
a) Negative (PWR) cables first.
b) Positive (RTN) cables last.
Step 5
Repeat Step 1 through Step 4 for the other power tray, if installed.
Hardware Installation Guide for Cisco NCS 4000 Series
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To ensure that power remains off while you are performing this procedure, lock-out/tag-out the
circuit breaker switch in the OFF (0) position until you are ready to turn it on.
To prevent injury and damage to the equipment, always remove the source DC power cables from
the power tray terminals in the following order : (1) negative (–), (2) positive (+).
To ensure that power remains off while you are performing this procedure, lock-out/tag-out the
circuit breaker switch in the OFF (0) position until you are ready to turn it on.
To prevent injury and damage to the equipment, always remove the source DC power cables from
the power tray terminals in the following order : (1) negative (–), (2) positive (+).
Installing Power Components