Cisco Systems 4500 Combined Mode Power Resiliency

10-16
Software Configuration Guide—Release 15.0(2)SG
OL-23818-01
Chapter 10 Environmental Monitoring and Power Management
Power Management
In combined mode, all the inputs to the chassis must be at the same voltage.
Table 10-10 illustrates how the 6000 W AC power supply is evaluated in combined mode.
Combined Mode Power Resiliency
Note This feature only applies in combined mode when both power supply bays contain the 4200 W AC or
6000 W AC power supply.
Using the combined mode power resiliency feature, you can limit the power usage to a maximum of two
or three (configurable) inputs.
With two 4200 W AC or 6000 W AC power supplies, a maximum of four inputs are available. This
feature allows you to cap the power usage to that of two or three inputs. If one of the power supplies
fails, no loss of power occurs because you have capped its usage to a smaller number of inputs.
To configure the combined mode resiliency feature, perform this task:
Table 10-9 Output Power in Redundant Mode for the 6000 W AC Power Supply
Power Supply 12 V (data) (W) -50V (PoE) (W)
Total
Power
(W)1
1. Power supply outputs’ drawing should not exceed the total power.
110 V AC 850 922 1050
110 V AC + 110 V AC 1700 1850 2100
220 V AC 2200 2400 3000
220 V AC + 220 V AC 2200 4800 6000
Table 10-10 Combined Mode Output for the 6000 W AC Power Supply
Power Supply 12 V (data) (W) -50 V (PoE) (W) Total Power (W)1
1. Power supply outputs’ drawing should not exceed the total power.
Both sides at 110 V AC 1530 1531 1710
Both sides at 110 V AC + 110 V AC 3060 3071 3590
One side at 110 V AC + 110 V AC, the
other at 110 V AC 2295 2301 2680
Both sides at 220 V AC 3960 3984 5140
Both sides at 220 V AC + 220 V AC 3960 7968 10170
Both sides at 220 V AC + 220 V AC,
the other at 220 V AC 2970 5976 7610