Kussmaul Electronics 091-92-12 - Manual (Page 2)

INSTALLATION
The 091-92-12 BATTERY SAVER is a power supply with a load power transfer function.
Loads connected to the BATTERY SAVER are powered by the vehicle’s battery when the
AC power to the 091-92-12 Battery Saver is OFF. When AC power is applied to the 091-
92-12 Battery Saver special circuitry within the Battery Saver transfers the load(s) to a
power supply internal to the 091-92-12 Battery Saver. The Battery Saver power supply then
provides low ripple 12VDC System power to Battery Saver load(s). Installation of a 091-
92-12 Battery Saver eliminates the power drain on a vehicle battery and or a battery under-
charge ensuring all vehicle battery charger power is available to charge the battery.
The 091-92-12 Battery Saver is unique in that there is no interruption of power supplied to
the loads during power transfers. The feature makes the 091-92-12 Battery Saver ideal for
MDT (Mobile Data Terminal) and or 12VDC vehicle computer systems that may "re-boot"
during an input power interruption.
INTRODUCTION
1. Mount the BATTERY SAVER in a convenient location with 4 screws in the
mounting holes provided. Be certain that adequate ventilation is available and that
the unit is not subject to weather damage.
2. Connect the 115VAC input power to the BATTERY SAVER through a 3-wire line
cord as shown in INSTALLATION WIRING DIAGRAM, Figure 1.
3. The low voltage connections are made through the DC output connector as shown
in INSTALLATION WIRING DIAGRAM, FIGURE 1.
1. Connect terminal 1 to the vehicle’s 12 volt battery (+).
2. Connect terminal 3 to the +12 volt electrical loads.
3. Connect terminal 4 to the vehicle ground or to the battery (-).
The installation is now complete. Loads connected to the Battery Saver will be powered
from the vehicle battery when the AC power to the Battery Saver is OFF and from the Battery
Saver power supply when the AC power is ON.