Installation guide

3-1
Chapter 3
9C214-3 Power Supply Operation
The 9C214-3 power supply can operate with input voltages ranging from
207–264 VAC at 50/60 Hz. Each 9C214-3 provides a maximum of 2000 watts of
power to the SmartSwitch 9000.
When two power supplies are installed, the system uses a current sharing scheme
where, under all load conditions, each supply provides 50% (± 5%) of the required
load.
Each 9C214-3 power supply converts the 207–264 VAC to three different DC
outputs for internal use by the system. Each of these outputs is described below.
• 56 volts supplied to the 48-volt DC System Power Bus for use throughout the
chassis for each installed module and the Environmental Module system fans.
• 5 volts supplied to the Diagnostic Power Bus used by the diagnostic controllers
and the Environmental Module.
• 3.3 volts supplied to the INB Termination Power Bus.
Operating Functions
The 9C214-3 power supply includes the following functions:
• System Diagnostic Controller
• Internal Temperature Sensor
• Power Supply Cooling