2 battery interface unit (biu), 3 service disconnects – Alpha Technologies PN-4 User Manual
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031-103-B0-004, Rev. D
5.0
PN Series Options, continued
5.2 Battery Interface Unit (BIU)
The BIU is used in Powernode systems with multiple power supplies or multiple battery
strings, and an AlphaGen DC generator. The BIU provides a parallel DC bus with convenient
connectors for each power supply and battery string.
Fig. 5-1, Battery Interface Unit Installed
5.3 Service
Disconnects
There are four Service Disconnects available (installed at the factory):
Fig. 5-5, FBX 60A
For multiple power supply
applications
Fig. 5-2, BBX 70A (BBX-FI2)
Square-D, 2-position
For single power supply
applications
Fig. 5-4, MTS
(Showing 100A and 60A boxes)
For applications requiring
a protected AC generator
O
F
F
4
0
O
F
F
4
0
O
F
F
O
N
1
5
O
F
F
1
5
Fig. 5-3, BBX 100A (BBX-FI8)
Square-D, 8-position
For multiple power supply
applications
Upper Battery Shelf
Lower Battery Shelf (PN-3)
Middle Battery Shelf (PN-4)
BIU Installed Under
Upper Batter Shelf
O
FF
4
0
O
FF
4
0
O
FF
O
N
1
5
O
FF
1
5