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Connecting the Power Supplies
Warning When installing or replacing the unit, the ground connection must always be made first and disconnected last. Statement 1046
To attach source DC power cables to the
Step 1 Verify that the system (NEBS) ground connection has been installed.
Step 2 Verify that power is off to the DC circuit that feeds the power supply that you are installing. 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.
Step 3 Verify that the power switch is in the off (0) position on the power supply that you are connecting. Step 4 Remove the clear plastic cover from the power supply terminal block and set it aside.
Step 5 Attach the appropriate size and style connectors to the source
Note Either insulated
Step 6 Loosen the three terminal block screws and position the
•Ground wire to the power supply ground terminal
•Negative
•Positive (+) source DC cable to the power supply positive (+) terminal
Step 7 Tighten the three terminal block connections.
Step 8 Reinstall the power supply terminal block cover.
Caution To prevent a short circuit or shock hazard after wiring the
Caution In a system with dual power supplies, connect each power supply to a separate power source. In case of a power source failure to one supply, the second power source should still be available.
Step 9 Remove any safety flag and lockout devices or any tape from the circuit breaker switch handle, and restore power by moving the circuit breaker switch handle to the on () position.
Note If a second power supply is not installed in the chassis, verify that the empty power supply bay has a blank power supply filler plate (Cisco part number
Cisco ME 6500 Series Ethernet Switch Installation Note
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