S e n d d o c u m e n t c o m m e n t s t o n e x u s 7 k - d o c f e e d b a c k @ c i s c o . c o m
5-2
Cisco Nexus 7000 Series Hardware Installation and Reference Guide
OL-23069-06
Chapter 5 Installing Power Supply Units
Connecting an AC Power Supply Unit to AC Power Sources
To mount a power supply unit in a Cisco Nexus 7000 Series chassis, follow these steps:
Step 1
Ensure that the switch on the front of the power supply unit is in the STBY position and that the power
supply unit is not connected to any power sources.
Step 2
Grasp the handle on the power supply unit with one hand, place the other hand under the unit, and orient
the unit to an open power supply bay on the rear of the chassis.
Step 3
Slide the unit all the way into the power supply bay until it is seated on the midplane and the four captive
screws on the front of the unit are aligned with their holes in the chassis.
Step 4
Secure each of the four captive screws into the chassis and tighten them to 8 in-lb (0.9 N·m).
Note
If you do not have enough power supply units to fill all of the power supply bays, cover each empty
power supply bay with a blank plate (Cisco part number N7K-PS-BLANK=) and secure it by screwing
in its captive screws to 8 in-lb (0.9 N·m).
If you are installing an AC power supply unit, you must now connect it to an AC power source. The
grounded power cable will automatically ground the power supply unit. To power and ground the AC
power supply unit, see the
“Connecting an AC Power Supply Unit to AC Power Sources” section on
If you are installing a DC power supply unit, you must ground the power supply unit before connecting
it to the DC power source. To ground the DC power supply unit, see the
Supply Unit” section on page 5-5
.
Connecting an AC Power Supply Unit to AC Power Sources
If you are powering your Cisco Nexus 7000 Series switch with 6-kW or 7.5-kW AC power supply units,
you must connect those power supply units to an AC power source. When you connect the power cable
to the AC power grid and the power supply unit, the unit is automatically grounded through this
interface.
Caution
Although you connect each AC power supply unit to an earth ground when you connect it to the AC
power grid, you should also connect the chassis to an earth ground. For information on grounding the
Cisco Nexus 7009 chassis, see the
“Grounding the Cisco Nexus 7009 Chassis” section on page 2-19
. For
information on grounding the Cisco Nexus 7010 chassis, see the
“Grounding the Cisco Nexus 7010
. For information on grounding the Cisco Nexus 7018 chassis, see the
“Grounding the Cisco Nexus 7018 Chassis” section on page 4-12
.
For a 6-kW AC power supply unit, you must connect one or two power cables to the power supply unit
and to the AC power sources.
Note
The power cables required for each 6-kW power supply unit are shipped in the system accessory kit.
Check the power cables with the list of available power cables in the accessory kit for the chassis that
you ordered (see
). If you do not have the correct cables, contact Cisco
TAC.
