Uninterruptible Power Supply - Avaya CMC1 Installation Manual

Installing and Cabling the Cabinets
AC Power and Ground
•
Plate electrodes
exterior soil
Concrete Encased Ground
within and near the bottom of a concrete foundation or footing in direct contact with the earth. The
electrode must be at least 20 feet (6.1 m) of 1 or more steel reinforcing bars or rods 1/2-in. (1.3 cm) in
diameter, or at least 20 ft (6.1 m) of bare, solid copper, 4 AWG (26 mm
—
Ground Ring
m) below the earth's surface. The ground ring must be at least 20 ft (6.1 m) of 2 AWG (35 mm
copper wire.
Approved Floor Grounds
CAUTION:
If the approved ground is inside a dedicated equipment room, then these connections must
be made by a qualified electrician.
Floor grounds are those grounds on each floor of a high-rise building that are suitable for connection to
the ground terminal in the riser closet and to the cabinet single-point ground terminal. Approved floor
grounds may include:
•
Building steel
•
The grounding conductor for the secondary side of the power transformer feeding the floor
•
Metallic water pipes
•
Power-feed metallic conduit supplying panel boards on the floor
•
A grounding point specifically provided in the building for the purpose

Uninterruptible Power Supply

An optional UPS (Uninterruptible Power Supply) may be used for power holdover. The type of UPS
depends on the holdover requirements. Holdover times vary from less than 10 minutes to up to 8 hours.
The UPS must provide surge protection for all connected cabinets.
1
Connect the UPS to an electrical outlet capable of handling the power requirements of all
cabinets:
a
For 100 VAC, multiply 4.5 amps times the number of cabinets.
b
For 120 VAC, multiply 3.8 amps times the number of cabinets.
c
For 200 VAC, multiply 2.3 amps times the number of cabinets.
d
For 220-240 VAC, multiply 2.0 amps times the number of cabinets.
2
Be sure that Cabinet A (control carrier) is connected to an "unswitched" or "always on" electrical
outlet on the UPS.
38
—
Must have a minimum of 2 ft
—
An electrode encased by at least 2 in. (5.1 cm) of concrete and located
A buried ground that encircles a building or structure at a depth of at least 2.5 ft (0.76
Installation, Upgrades and Additions for Avaya CMC1 Media Gateways
2 2
(0.185 m ) of metallic surface exposed to the
2
) wire.
2
), bare,
June 2004