Ericsson RBS 2106 Reference Manual page 194

Unit Description, PSU 1200 W
Load sharing is achieved by the DXU function when using more than
one PSU, load sharing of parallel PSUs is achieved by adjusting the
individual voltages to each PSU in the system.
Output voltage from the PSU is adjusted to between 26.2 V and 28.5 V
depending on battery temperature.
Power Limitation
When the temperature exceeds the permissable value, the PSU reduces
the power and an alarm is sent to the DXU. Output power increases
when the temperature drops, and the alarm is reset.
When the output power of the converter reaches 1200 W, the converter
limits its power by reducing its output voltage in order to maintain a
constant output power. The output current increases to a maximum of
60 A even in the event of short circuits.
15.2.3 External Interfaces
Figure 108
The PSU has the following external interfaces, all located on the front:
192 (485)
P S U -D C
O UT PU T
+2 7. 2 V D C
1 2 0 0 W
F a u lt
O p e ra ti o n
a l
E P C -b u s
T D
R D
I N P U
T
1 2 0 -
2 5 0 V
A C
5 0 / 6 0
H z
1 2 A
PSU DC
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EN/LZT 720 0008 P2A
2001-11-28