AT&T 555-230-894 User Manual
Install the 1145B1 Power Supply
Issue 1 September 1995
9-27
32. The 1145B1 (not 1145A1) is required for installation outside the United
States.
States.
Auxiliary power (local or bulk) is always required in the following situations:
■
Attendant console 302B.
■
Any 8520 terminal.
■
Any 7500-series or 8500-series terminal with an asynchronous data
module.
module.
■
Any 7500-series terminal (whether in passive bus, or point to point, that is,
one per basic rate interface port).
one per basic rate interface port).
■
Any 8510 terminal in passive bus or with an asynchronous data module.
(Provide auxiliary power to an 8510 unless you are certain it will never be
used to support such applications as data or video.)
(Provide auxiliary power to an 8510 unless you are certain it will never be
used to support such applications as data or video.)
This section tells how to install the 1145B1 Power Supply, 1146B1 Power
Distribution Unit, and 2.5 amp hour (AH) back-up batteries. All units are mounted
on wall-mounting plates. The wall-mounting plates should be installed first. The
rest of the hardware can be mounted in any desired order. The next illustration
shows how the power supply and wall-mounting plates fit together.
Distribution Unit, and 2.5 amp hour (AH) back-up batteries. All units are mounted
on wall-mounting plates. The wall-mounting plates should be installed first. The
rest of the hardware can be mounted in any desired order. The next illustration
shows how the power supply and wall-mounting plates fit together.
Wall-Mounting Plates
Two wall mounting plates are provided for easy assembly and to provide correct
spacing between units for cooling. The top plate is needed for mounting the
back-up battery. The bottom plate is needed to mount the Power Supply and
Distribution Units. The plates can also be used for rack mounting the hardware
by means of standard rack-mounting brackets.
spacing between units for cooling. The top plate is needed for mounting the
back-up battery. The bottom plate is needed to mount the Power Supply and
Distribution Units. The plates can also be used for rack mounting the hardware
by means of standard rack-mounting brackets.
1.
Locate one plate directly below the other one such that the AC power
cord (6-1/2 feet or 2 meters) reaches the desired electrical outlet from a
power supply mounted on the bottom plate. Both plates should be
located so the raised letters are right side up.
cord (6-1/2 feet or 2 meters) reaches the desired electrical outlet from a
power supply mounted on the bottom plate. Both plates should be
located so the raised letters are right side up.
NOTE:
A maximum of four Power Supplies can be powered from one
dedicated 110VAC, 20 amp (or 230VAC, 15A) feeder. Use only
unswitched receptacles. In other words, receptacles not connected
to a wall switch.
dedicated 110VAC, 20 amp (or 230VAC, 15A) feeder. Use only
unswitched receptacles. In other words, receptacles not connected
to a wall switch.
2.
Secure the wall mounting plates to a standard 3/4 inch (2 cm) thick
plywood mounting board. Each mounting plate comes with four
#10x1/2-inch wood screws.
plywood mounting board. Each mounting plate comes with four
#10x1/2-inch wood screws.