Oracle Acme Packet 4500 Hardware Installation Manual page 19

Power Supply B
Power Supply
Redundancy
AC Power
AC Power Cords
DC Power
Version 1.0
Power supplies are accessed from the rear panel of the system chassis. The right
power supply is designated as power supply A, and the left power supply is
designated as power supply B.
Power Supply A
During normal operation, the Acme Packet 4500 is load-balanced and draws power
from both supplies. The two power supplies also provide hardware redundancy. If a
power supply fails, the Acme Packet 4500 can rely on only one functional power
supply to sustain normal operation. A malfunctioning power supply must be
removed and replaced as soon as possible. If the Acme Packet 4500 starts up with
only one power supply, it will not generate an alarm.
The auto-sensing AC power supply is rated at 110-240 VAC, 50-60 Hz, and comes
with an IEC connector. You insert and remove the power supply from the system
chassis by its handle. Use the locking screw to lock the power supply into the chassis.
IEC Connector handle
Acme Packet ships all AC-powered Acme Packet 4500s with one 2 meter, 3-
conductor 18 AWG power cord for each power supply. The power cord connects to
the IEC-320 receptacle on the power supply.
Acme Packet ships all DC-powered Acme Packet 4500s with one 8' power cable with
each power supply. The Acme Packet 4500 can be powered by central office –48 VDC
operations with a DC-DC supply. You insert and remove the power supply from the
system chassis by its handle. Use the locking screw to lock the power supply into the
COMPONENT OVERVIEW
locking screw
Acme Packet 4500 Hardware Installation Guide 21