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Cisco SCE8000 GBE Installation and Configuration Guide
Chapter 9 Removal and Replacement Procedures
Installing a DC-Input Power Supply
Caution You must connect the PWR-2700-DC/4 power supply ground for both power supplies.
Note If you intend to use an additional system (earth ground), ensure that the system ground connection has
been made. For ground connection installation instructions, see Connecting the System Ground,
page 4-20.
Step 2 Remove the plastic bag attached to the front panel and put aside. This bag contains two plastic terminal
block barriers, two cable ties, and two cable holder covers.
Step 3 Verify that power is off to the DC circuit connected to the power supply you are installing. Grasp both
power supply handles, as shown in Figure 9-4. Slide the power supply into the power supply bay. Make
sure that the power supply is fully seated in the bay.
Step 4 Tighten the power supply captive installation screws.
Warning
Power supply captive installation screws must be tight to ensure protective grounding continuity.
Statement 289
Note Because the power requirement of the Cisco SCE 8000 does not exceed 1350 W, it is not necessary to
connect two pairs of input wires to each power supply. Should it be desired to connect two pairs of input
wires, both pairs of input wires for one 2700W DC-input power supply must come from the same battery
system (A feed); and both pairs of input wires for the other power supply must come from another battery
system (B feed).
Note For multiple DC input power supplies, each DC input must be protected by a dedicated circuit breaker
or fuse. The circuit breaker or fuse should be sized according to the power supply input rating and local
or national electrical code requirements.
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