User's Manual
Doc. No.
Rev.
Date
DRAFT
1.01
2012-01-27
Damm Cellular Systems A/S, Denmark
TetraFlex
®
7.5 Manual - BS41x
TetraFlex® 7.5
Manual
1-33
1.3.8.5 Battery deep discharge protect
The Base Station is provided with a feature to switch off the load, when the battery is close to
being discharged in order to protect the battery.
The Base Station is prepared for –60V battery operation, wherefore a switch is placed on the
back plane of the BS to indicate to the PS411’s, whether a -48V or -60V battery is used.
Note that the present version of PS411 can only operate with -48V DC, wherefore this feature
is not active, and the switch shall be placed in the –48V position.
Battery
48V
Turn-on voltage
45.0V
Turn-off voltage
40.0V