• The receptacles for the power sources must be within reach of the power supply cables.
• If you are connecting to a DC power, check that you are using power cables to connect to the power
supply. The wire size applies to the negative (-), and positive (+) cables that connect to negative and
positive apertures on the connector. You have to procure the power cable.
• If you are installing more than one DC-input power supply, each must be protected by a dedicated circuit
breaker or a fuse that is sized according to the power supply input rating and the local or national electrical
code requirements.
• The power sources are rated as follows:
• For North American AC-input installations: 16A with 110V circuits.
• For North American DC-input installations: (–48 VDC nominal at 37 A in North America (operating
range: –40.5 upto –56 VDC).
• For international installations: Size the circuits by local and national standards.
• The power supply must be already inserted into the device.
Ensure that the power source is off. As an added precaution, place the appropriate safety flag and lockout
devices at the source power circuit breaker, or place a piece of adhesive tape over the circuit breaker handle
to prevent accidental power restoration while you are working on the circuit.
Caution
Before performing any of the following procedures, ensure that power is removed from the DC circuit.
Statement 1003
Warning
Removing and Installing Power Supply Blank Cover
If a power supply bay in an OLT is unused, you must cover the bay with a power supply blank cover to
maintain proper airflow through the device.
Removing a Power Supply Blank Cover
Procedure
Step 1
Use the Phillips head screwdriver and loosen the installation screws on the power supply module blank cover.
Step 2
Use both hands to remove the power supply module blank cover.
Step 3
Store the power supply module blank cover in a safe location for future use.
Cisco Catalyst PON Series Switches Hardware Installation Guide
48
Remove and Replace Field-Replaceable Units
Removing and Installing Power Supply Blank Cover
