Connecting To An Ac Power Source; Connecting To A Dc Power Source - Cisco Catalyst 6840 Series Hardware Installation Manual

Installing and Removing Power Supplies
• The power supply is already inserted into the chassis.
Caution
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.
Warning Before performing any of the following procedures, ensure that power is removed from the DC circuit.
Statement 1003

Connecting to an AC Power Source

To connect to a power source, follow these steps:
Warning Take care when connecting units to the supply circuit so that wiring is not overloaded. Statement 1018
Procedure
Step 1 Plug the power cable into the power supply.
Step 2 Plug the other end of the power cable into an power source supplied by the data center.
Note
Step 3
Verify that the power supply is receiving power and outputting DC power by checking that the OK LED is
on and is not yellow or blinking green. For an explanation of all the power supply LEDs and the conditions
that they indicate, see
When you first activate the power supply, you can verify the functionality of the LEDs by checking that each
LED turns on for a couple of seconds. If the OK LED is flashing green, check the AC power connections on
the power supply and the AC power source.

Connecting to a DC Power Source

Before you connect DC power supplies to power sources, you need to attach the DC connection wires to the
DC power connector. To wire the connector:
Warning
Before performing any of the following procedures, ensure that power is removed from the DC
circuit.Statement 1003
• For international installations—Size the circuits by local and national standards.
When using redundant mode, connect each power supply to a separate power source.
Power Supply LEDs.
Catalyst 6840-X Switch Series Hardware Installation Guide
Connecting to an AC Power Source
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