Mounting The 1145B2/1146B2 Power Supply - Avaya S8700 Installing Manual

176
Installing and Wiring Telephone Power Supplies
• Do not store batteries in high temperature areas. Batteries stored in a cold environment
should be protected from condensation during storage and warming. Batteries should be
stabilized at room temperature prior to use after cold storage. Do not install batteries if
the manufacturing date on the label indicates that the batteries are more than six months
old.

Mounting the 1145B2/1146B2 Power Supply

''1145B2/1146B2 Mounting Arrangement'' on page 177
and wall-mounting plates fit together.
the expanded power supply components (power distribution unit and "T" cable).
A manual switch on the distribution unit allows the user to redirect reserve power to outputs 1
through 32 so all outputs are provided battery reserve power or to outputs 1 through 8 to provide
high power above 6.25 watts.
NOTE:
The switch must be set to the 1-32 position.
The 1145B22/1146B2 is a -48 V power supply with 275 watts total output. Each output circuit
is current limited by a Polymer Positive Temperature Coefficient Resistance Device (PTC) that
limits the maximum output to 12 watts. Each 1146B2 output has an LED to indicate the status
of the PTC. If the LED is on, the PTC has a short on that power pair.
Not all outputs can simultaneously provide 12 watts. The average power per output cannot
exceed 8.6 watts (275/32 = 8.6). The 1145B22 is designed to power one ISDN terminal or DCP
adjunct per output. The maximum number of terminals or adjuncts is 32 at less than or equal to
6.25 watts each. The 1145B22 is required for installations outside the United States.
Auxiliary power (local or bulk) is always required for the following:
• Attendant Console 302D
• PassageWay adapter interface
shows how the standard power supply
''Expanded Power Distribution Unit'' on page 178
October 2002
shows