12-15
Software Configuration Guide—Release IOS XE 3.3.0SG and IOS 15.1(1)SG
OL-25340-01
Chapter 12 Environmental Monitoring and Power Management
Power Management
Power supplies needed by system : 1
Power supplies currently available : 2
Power Summary Maximum
(in Watts) Used Available
---------------------- ---- ---------
System Power (12V) 140 1360
Inline Power (-50V) 0 1850
Backplane Power (3.3V) 0 40
---------------------- ---- ---------
Total 140 (not to exceed Total Maximum Available = 2100)
Switch#
As with other power supplies, the two power supplies must be of the same type (6000 W AC or 4200 W
AC or 1400 W DC). Otherwise, the right power supply is put in err-disable state and the left one is
selected. In addition, all the inputs to the chassis must be at the same voltage. In redundant mode, the
inputs to the left and right power supplies must be identical. If the left and right power supplies are
powered in redundant mode, the power values is based on the power supply with the higher output
wattage.
Note When the system is powered with a 4200 W or 6000 W power supply either in 110 V or 220 V combined
mode operation, the available power is determined by the configuration of the system (the type of line
cards, the number of line cards, number of ports consuming inline power, etc.) and does not reflect the
absolute maximum power.
Note In a matched redundant power supply configuration, if a power supply submodule fails, the other (good)
power supply provides power to its full capability.
Table 12-6 illustrates how the 4200 W AC power supply is evaluated in redundant mode.
In combined mode, all the inputs to the chassis must be at the same voltage.
Table 12-7 illustrates how the 4200 W AC power supply is evaluated in combined mode.
Table 12-6 Power Output in Redundant Mode for the 4200 W AC Power Supply
Power Supply 12 V 3.3 V -50 V Total
110 V 660 40 700 1050
110 V+110 V
or 220 V
1360 40 1850 2100
220 V+220 V 1360 40 3700 4200
Table 12-7 Combined Mode Output for the 4200 W AC Power Supply
Power Supply 12 V 3.3 V -50 V Maximum
Both sides (bays) at 110 V 1200 40 1320 1870
110 V+110 V, other side 110 V 1800 40 2000 2730
Both sides at 110 V+110 V 2200 40 3100 3800
Both sides at 220 V 2200 40 3100 3800
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