Cisco NCS 4201 Installing Manual - Page 15

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Installing the Cisco NCS 4201

Perform the following procedure to install a power supply module:

Step 1

Ensure that the system (earth) ground connection has been made. For ground connection installation instructions, see

the

Installing the Chassis Ground Connection

Step 2

If present, remove the blank power supply filler plate from the chassis power supply bay opening by loosening the captive

installation screws.

Step 3

Verify that power to the DC circuit connected to the power supply you are installing is off. To ensure that power has

been removed from the DC circuits, locate the circuit breakers for the DC circuits, switch the circuit breakers to the OFF

position, and tape the circuit-breaker switches in the OFF position.

Step 4

Grasp the power supply metal tab with one hand. Place your other hand underneath the power supply. Slide the power

supply into the power supply bay as shown in figure below. Make sure that the power supply is fully seated in the bay.

Figure 10: Installing a DC Power Supply

Step 5

Tighten the captive installation screw of the power supply. The recommended maximum torque is 5.5 in.-lb (.62 N-m).

If you are installing a redundant DC power supply, repeat these steps for the second power source too.

Attaching Cables to the DC Power Supply

Note

When installing DC power supply, use 14 AWG, 90°C wires. Always ensure that the building's installation

for short-circuit (overcurrent) protection does not exceed 15A.

section.

Cisco NCS 4201 Hardware Installation Guide

Installing a DC Power Supply