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FILE:Nugent\e\Data\Pagemake\INSTRUCT\091-75-2
DATE:8/17/00
BOOK# 091-75-2
INSTRUCTION MANUAL
AUTO CHARGE 75
AUTOMATIC BATTERY CHARGER
MODEL #091-75-XX-XXX( )
NOTE:
THIS CHARGER IS DESIGNED
FOR A SINGLE BATTERY SYSTEM.
3 YEAR WARRANTY
KUSSMAUL ELECTRONICS CO., INC.
170 CHERRY AVE., WEST SAYVILLE, N.Y. 11796
TEL: in NY 631-567-0314 TOLL FREE: 800-346-0857 FAX: 631-567-5826
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TABLE OF CONTENTS
Introduction
Installation
Specification & Outline
Warranty
LIST OF ILLUSTRATIONS
Figure 1 Block Diagram
Figure 2 Electrical Arrangement
Figure 3 Wiring
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INTRODUCTION
The Auto Charge 75, Model 091-75 is a compact, high output, completely automatic battery
charger. Available in a wide array of output voltages it may be specified for operation from
either 120 volts or 230 volts, 50/60 Hz. The specification chart lists the various models with
the output current ratings.
The charger functions automatically by adjusting its output voltage with a variation of the
triggering angle of the silicon controlled rectifiers in the full wave rectifier. Output current is
limited by detecting the voltage drop across a low resistance shunt and modifying the triggerÂing angle to limit the current. A block diagram appears in figure 1.
This charger may remain energized and connected to the battery for extended periods of time
with no danger of overcharging or water boil-off. It is available with Auto Equalization and
Temperature Compensation as options.
INSTALLATION
The Auto Charge 75 automatic battery charger should be installed in an area with adequate
ventilation. A power cord and output wires are provided. Note that this charger is fan cooled
and that the fan is thermostatically controlled. The fan operates only when required to keep
the charger components cooled.
1. Mount the charger using the four holes provided.
2. Connect the red wire to the battery positive, and the black wire to the battery negative. Be
certain that the battery voltage corresponds to the output voltage rating of the charger.
3. Double check all wiring before proceeding.
4. Wire the A.C. power line to a power source that corresponds to the input requirements of
the charger.
5. The installer may add an ammeter in the output of the charger if output current indication
is desired.
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INPUT
POWER
ISOLATION
TRANSFORMER
POWER
SUPPLY
COSINE
RAMP
GENERATOR
12 VOLT
REGULA TED
+12V
REF. INPUT
VOL TS ADJUST
VOL TAGE
SENSE FROM
CHARGER O UTPUT
AMPS
ADJUST
CURRENT
SENSE
AMPLFIER
BIAS
ADJUST
CURRENT
LIMIT
AMPLIFIER
AMPLIFIER
CURRENT LIMIT FEEDBACK
THRESHOLD
G1
POWER
AMPLIFIER
COMPARAT OR
TRIGGER
TRANSFORMER
K
G2
Figure 1
BLOCK DIAGRAM, AUTO CHARGE CONTROL CIRCUIT
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FAN
INPUT
POWER
POWER
INPUT
POWER
TRANSFORMER
G1
G2
K
CHARGER
OUTPUT
CURRENT
SENSE
KG1G2
VOLT
SENSE
CONTROL P.C. BOARD
Figure 2
Model 091-75, Auto Charge, Electrical Arrangement
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NEG.
POS.
Figure 3 Wiring
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SPECIFICATION & OUTLINE
SPECIFICATIONS:
INPUT:
VOLTS FREQUENCY AMPS FUSE
120 50/60 Hz 17 20
230 50/60 Hz 9 12
277 50/60 Hz 8 10
all fuses are s lo-blo
Output: see chart
Output Current: see chart
Weight: 65 lbs
Model Number Specification
091-75-XX-XXX( )
SPECIFICATION CHART
MODEL # INPUT OUTPUT OUTPUT
VOLTAGE VOLTAGE AMPS
091-75-12 120 A.C. 12 D.C. 75
091-75-24 120 A.C. 24 D.C. 40
091-75-32 120 A.C. 32 D.C. 30
091-75-36 120 A.C. 36 D.C. 27
091-75-48 120 A.C. 48 D.C. 25
091-75-72 120 A.C. 72 D.C. 15
091-75-96 120 A.C. 96 D.C. 12
091-75-120 120 A.C. 120 D.C. 10
091-75-12-230 230 A.C. 12 D.C. 75
091-75-24-230 230 A.C. 24 D.C. 40
091-75-32-230 230 A.C. 32 D.C. 30
091-75-36-230 230 A.C. 36 D.C. 27
091-75-48-230 230 A.C. 48 D.C. 25
091-75-72-230 230 A.C. 72 D.C. 15
091-75-96-230 230 A.C. 96 D.C. 12
091-75-120-230 230 A.C. 120 D.C. 10
091-75-48-277 277 A.C. 48 D.C. 25
Basic Model
D.C. Output Volts
A.C. Input Volts
(Only specify if
other than 120V)
Options if any
TC = Temp. Compensation
AE = Auto Equalize
OUTLINE DRAWING
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INSTALLATION RECORD & WARRANTY
Date Installed
Installed By
Vehicle Identification
Vehicle Owner
WARRANTY
All products of Kussmaul Electronics Company Inc. are warranted to be
free of defects of material or workmanship. Liability is limited to repairing or
replacing at our factory, without charge, any material or defects which
become apparent in normal use within 3 years from the date the equipment
was shipped. Equipment is to be returned, shipping charges prepaid and will
be returned, after repair, shipping charges paid.
Kussmaul Electronics Company, Inc. shall have no liability for damages
of any kind to associated equipment arising from the installation and /or use
of the Kussmaul Electronics Company, Inc. products. The purchaser, by the
acceptance of the equipment, assumes all liability for any damages which
may result from its installation, use or misuse, by the purchaser, his or its
employees or others.
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