Supplying Power - Cisco AS5400HPX Installation Manual

Chapter 3 Installing the Cisco AS5400 and Cisco AS5400HPX Universal Gateways

Supplying Power

The power system is comprised of a fully redundant switching power supply with two AC (or two DC)
inputs to the main power modules. Each input and output is 100 percent fully redundant, with dual fans
for added reliability.
The output of each power module is rated at 300 watts (nonredundant mode), and is composed of four
independent output voltages: 3.3V, 5V, 12V, and -12V. AC input units have power factor correction,
and low Total Harmonic Distortion. Units that are in redundant mode run at one-half the power
capability. If a power supply failure occurs, these units are capable of powering the complete system
either at the input side or the DC load side. Power failures are reported through software SNMP alarm
traps.
Check the power at your site to ensure that you are receiving "clean" power (free of spikes and noise).
Install a power conditioner if necessary.
The universal gateway AC power supply includes the following features:
•
•
In a DC power supply installation, do not connect the 48 VDC Return to chassis ground at
Caution
the Cisco AS5400. A single-point ground is recommended at the power distribution rack.
Warning Do not touch the power supply when the power cord is connected. For systems with a
power switch, line voltages are present within the power supply even when the power
switch is off and the power cord is connected. For systems without a power switch, line
voltages are present within the power supply when the power cord is connected. To see
translations of the warnings that appear in the publication, refer to the Regulatory
Compliance and Safety Information document that accompanied this device.
Warning This product relies on the building's installation for short-circuit (overcurrent)
protection. Ensure that a fuse or circuit breaker no larger than 120 VAC, 15A U.S.
(240 VAC, 10A international) is used on the phase conductors (all current-carrying
conductors). To see translations of the warnings that appear in the publication, refer to
the Regulatory Compliance and Safety Information document that accompanied this
device.
Warning The device is designed to work with TN power systems. To see translations of the
warnings that appear in the publication, refer to the Regulatory Compliance and Safety
Information document that accompanied this device.
OL-2847-02 0A
Full range operation—100 to 240 VAC.
All units include two 6-foot (1.8-meter) electrical power cords. (A label near the power inlets
indicates the correct voltage, frequency, current draw, and power dissipation for the unit.)
Cisco AS5400 Universal Gateway Chassis Installation Guide

Supplying Power

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