Installing the expanded power distribution unit – Avaya 555-233-116 User Manual

Page 36

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Auxiliary power supplies

555-233-116

36

Issue 4 October 2002

Installing the expanded power distribution unit

You can install a second power-distribution unit for additional 8400- and 8500-
series terminals.

!

CAUTION:

Total power cannot exceed 200 W. Consult the chart below for permissible
terminal installations.

Each expanded power distribution unit kit supplies the following items:

One power distribution unit

One T-cable

Two #8-32 x 1/2-in. shoulder screws

One #8-32 x 1 in. screw

One spacer bracket

See

Figure 4

while installing the power distribution unit:

1. Fasten the spacer bracket to the mounting plate with the #8-32 x 1/2-in.

shoulder screws.

The spacer bracket is not shown in the figure. It is behind the top power
distribution unit.

2. Slide the keyhole slots in the power distribution unit over the shoulder

screws.

3. Insert the #8-32 x 1 in. screw through the distribution unit, through the

spacer bracket, and into the plate. Tighten the screw.

The mounting hole is located just above the wire clip.

4. Set the battery back-up switch to the 1-32 (down) position.

5. Power-down the 1145B as described on the label on the side of the unit.

Table 7.

Permissible terminal installations (total power < 200 W)

Terminal mix

Maximum numbers

Notes

7500-series + 8500-series ISDN

24 + 24

7400-series + 8400-series DCP

24 + 24

8400-series DCP

74

7400-series DCP

74

Average power per
terminal must be
less than 3.126 W

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