Product Overview 1-29
Physical and Functional Overviews
AC-Input Power Supply
The AC-input power supply is a modular unit that measures 10 inches (25.4 cm) by 3.8
inches (9.6 cm) wide by 15 inches (38 cm) deep and weighs 18 lb (8.2 kg). (See Figure 1-8.)
The Cisco 12012 requires two AC-input power supplies to operate. Installing one or two
additional AC-input power supplies provides power supply redundancy and current sharing
capability.
Warning
AC operation requires a minimum configuration of two AC-input power
supplies.
An AC-input power supply has the following features:
•
A power factor corrector (PFC). Allows the power supply to accept source AC voltages
from 180 to 264 VAC, single phase, 47 to 63 Hz. Each AC-input power supply requires
a dedicated 20A service, North America; 10A or 16A, International.
•
A handle. Provides a grip point for removing and replacing the power supply.
•
A captive screw at the bottom of the faceplate. Secures the power supply in the power
supply bay.
•
A power supply power cord appliance coupler. The main disconnect for the system. The
power supply power switch engages a latch that secures the power supply in the power
supply bay.
•
Two LEDs on the power supply faceplate. Indicate the following:
— A green AC OK LED indicates that the source AC voltage is within the operational
range of 200 to 264 VAC. The LED is on any time the power supply is connected
to source AC and the power supply power switch is on. If the LED is off, a problem
might be indicated.
— A red output fail LED indicates that one or both of the power supply output voltages
(+5 and –48 VDC) is out of tolerance. The LED flashes on and off for five seconds
as a test of the LED when you first turn on the power supply.
Summary of Contents for Gigabit Switch Router Cisco 12012
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