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Cisco ASR 9000 Series Aggregation Services Router Overview and Reference Guide
OL-17501-09
Chapter 2 Functional Description
Power System Functional Description
AC Tray Power Switch
Each AC power tray provides a single-pole, single-throw power switch to power on and put in standby
mode all power modules installed in the tray simultaneously. When the power modules are turned off,
only the DC output power is turned off; the power module fans and LEDs still function. The power switch
for the version 1 power tray is on the back of the tray, as shown in Figure 2-57. The power switch for the
version 2 power tray is on the front of the tray, as shown in Figure 2-59.
Figure 2-59 Location of AC Power Switch - Version 2 Power System
AC Input Voltage Range
Each AC module accepts an individual single phase 220-VAC 20-A source. Table A-17 shows the limits
of the specified AC input voltage. The voltages given are single phase power source.
DC Output Levels
The output for each module is within the tolerance specifications (see Table A-19) under all
combinations of input voltage variation, load variation, and environmental conditions. The combined,
total module output power does not exceed 3000 W.
The AC tray output capacity depends on how many modules are populated. Maximum output current is
determined by multiplying the maximum module current times module quantity. For example, to
determine the maximum capacity with three power supply modules, multiply the current by three (x3).
1 Power switch
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