This product relies on the building's installation for short-circuit (overcurrent) protection. Ensure that the
protective device is rated not greater than 120 V, 15 A or 240 V, 16 A for the Circuit Breaker. Statement
1005
Warning
This unit is intended for installation in restricted access areas. A restricted access area can be accessed
only through the use of a special tool, lock and key, or other means by security. Statement 1017
Warning
The Cisco chassis provides inputs for both AC and DC power. Design your installation to use only one
type of power.
Do not use AC and DC power at the same time
. If you do, the unit stops operating, and
you must reboot it with only a single power source.
Caution
Depending on the power source you want to connect, see:
•
Connecting the Chassis to an AC Power Source, on page 37
•
Connecting the Chassis to a +12V DC Power Supply, on page 38
Connecting the Chassis to an AC Power Source
Before You Begin
AC connected units must have a permanent ground connection in addition to the power cable ground wire.
Warning
Design your installation to use either AC or DC power source.
Do not use AC and DC power at the same
time
. If you do, the unit stops operating, and you must reboot it with only a single power source.
Caution
If you suspect that your AC power is not clean
—
if lights flicker often or there is machinery with large
motors nearby
—
have a qualified person test the power. Install a power conditioner if necessary.
Note
The Cisco VG310 or Cisco VG320 voice gateway with AC power supply autoselects either 100
–
127 volt or
200
–
240 volt operation. AC versions include a 6-foot (1.8-meter) electrical power cord. A label near the power
cord indicates the correct voltage, frequency, current draw, and power dissipation.
Follow these guidelines before you connect the chassis to an AC power source:
•
While being connected to an AC power source,
do not
connect the chassis to the DC power supply as
an arrangement for backup power in the event of AC power failures.
•
To ensure uninterrupted power, connect the chassis to an uninterruptible power supply (UPS). For more
information on connecting a UPS to the chassis, see
Connecting a UPS to an AC-Powered Voice Gateway,
on page 38
.
Cisco VG310 and Cisco VG320 Voice Gateways Hardware Installation Guide
OL-31292-01
37
Installing the Cisco VG310 and Cisco VG320 Voice Gateways
Connecting the Chassis to an AC Power Source
