Kussmaul 091-92-12 User Manual

FILE: IM_091-92-12_Rev_B

DATE: 09-15-04

INSTRUCTION MANUAL

BATTERY SAVER

LOW RIPPLE POWER SUPPLY / AUTOMATIC LOAD SWITCH

FOR 12VDC VEHICLE SYSTEMS

MODEL #091-92-12

INPUT: 115 VOLTS, 50/60 Hz AC, 1.8 amps. RMS

OUTPUT: 13.2VDC, 10 AMPS DC, 130VA

3 YEAR WARRANTY

KUSSMAUL ELECTRONICS CO., INC.

170 CHERRY AVE., WEST SAYVILLE, N.Y. 11796-1221

TEL: in NY 631-567-0314 TOLL FREE: 800-346-0857 FAX: [phone]

INTRODUCTION

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 091­92-12 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 091­92-12 Battery Saver eliminates the power drain on a vehicle battery and or a battery under­charge 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.

INSTALLATION

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.

TEST and OPERATION

The 091-92-12 Battery Saver system interface panel contains two (2) Green LEDs as
follows: Refer INSTALLATION WIRING DIAGRAM, Figure 1.
"LOAD POWER" LED: Illuminates when power is being supplied to the load(s) regardless

of the source of the power (Vehicle Battery or Battery Saver).

"BATT SVR PWR" LED: Illuminates when Battery Saver is receiving AC power and the

power supply internal to the Battery Saver is ON and functioning.

Installation Test

1. Remove AC power from the 091-92-12 Battery Saver.

2. Verify "LOAD POWER" LED is illuminated and loads are being powered by vehicle
battery (voltage at load is approximately equal to vehicle battery terminal voltage).

3. Apply AC power to 091-92-12 Battery Saver and verify:

1."LOAD POWER" LED remains illuminated

2. "BATT SVR PWR" LED illuminates approximately five (5) seconds after
application of AC power to Battery Saver.

3. Load voltage is between 13.2VDC and 13.4VDC

Operation

The 091-92-12 Battery Saver contains special circuitry that eliminates power delivery
"glitches" or interruptions during load power transfer(s) from:

*Vehicle Battery to Battery Saver: Five (5) second delay as Battery Saver power

supply stabilizes. Installation Test para. 3.2.

*Battery Saver to Vehicle Battery: No delay

The MINIMUM voltage at the load during any power transition is:

Vehicle Battery VDC - 1.3VDC for a MAXIMUM of 150 milli-seconds (.150 seconds).