Positron 7885-2, Описание и установка

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(20 pages) Standalone Power Supply Unit 120 V dc to -24 V dc 1
7885-2 & 7885-3
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1. The Standalone Power Supply Unit
and Battery Unit
The Standalone Power Supply Unit and its Battery Unit, models 7885-2 and
7885-3, are described in one document because together they form a fully
functional uninterruptible power supply. They are always sold together, as a pair.
The Standalone Power Supply Unit, model 7885-2, converts 120 V ac, 60 Hz to
48 V dc, and may be configured for an output that is either floating or referenced
to station ground. This large capacity supply can be used to power a fully loaded
Three, Five or Eight-card Shelf.
The Battery Unit, model 7885-3, holds two maintenance-free backup batteries, as
does the Power Supply Unit, model 7885-2. When the 7885-2 is connected to the
7885-3, the 7885-2 provides 5.7 ampere-hours of battery charge at 48 V dc. The
7885-2 alone cannot provide battery backup.
The installation kit consists of the Standalone Power Supply Unit and its Battery
Unit, in durable, metal enclosures. The kit contains connecting cables, and
mounting hardware.
Attention
The Standalone Power Supply Unit and its Battery Unit are intended to
provide a shelf with uninterruptible 48 V dc, either floating or referenced to
station ground. Teleline equipment having conflicting requirements cannot
be used with this supply. For further information, refer to Table 3 and Table
4.
For a view of the Standalone Power Supply Unit and its Battery Unit, refer to
Figure 1.