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FILE:091-108.pm7.0
DATE: 5-8-06
INSTRUCTION MANUAL
Over Voltage Relay
A BATTERY VOLTAGE MONITOR THAT DETECTS
AN OVER VOLTAGE CONDITION
MODEL #091-108
3 YEAR WARRANTY
KUSSMAUL ELECTRONICS CO., INC.
170 CHERRY AVE., WEST SAYVILLE, N.Y. 11796
TEL: in NY
631-567-0314631-567-0314
631-567-0314 TOLL FREE:
631-567-0314631-567-0314
800-346-0857800-346-0857
800-346-0857 FAX:
800-346-0857800-346-0857
631-567-5826631-567-5826
631-567-5826
631-567-5826631-567-5826
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INTRODUCTION
The 091-108-012 OVER VOLTAGE RELAY is a device that continuously monitors the voltage of the
battery. The unit is factory set to actuate at 17 volts, and reset at 14 volts but may be adjusted to other
voltages. The output relay is capable of switching 30 amperes, and both a “normally open” and
normally closed” contacts are provided.
INSTALLATION
Connect the OVER VOLTAGE RELAY to the battery, the load and the fuse as illustrated in figure 1.
This is a typical circuit. Other circuit configurations are possible. It is always necessary to connect
the Bat+ and Bat- terminals to that point at which the voltage is to be sensed.
ADJUSTMENT
The factory setting for the OVER VOLTAGE RELAY is 17.0 volts. Field adjustment of the set point
is possible. To do this, remove two screws holding down the cover. Note the position of the voltage
adjustment trimmer R5. This is the 17-volt setting. To decrease the voltage turn counter clockwise.
To increase the voltage turn clockwise. Two indicator LED’s are provided adjacent to the terminal
strip. When the green LED is lit, the voltage sensed is normal. When the red LED is lit, the voltage
is above the set point. The voltage detector can be tested by gradually raising the system voltage while
simultaneously measuring the voltage applied to the input terminals with a precise voltmeter and
noting the voltage at which the red LED turns “ON”.
The 091-108-012 OVER VOLTAGE RELAY contains an adjustable high hysteresis feature. With the
normal trip point set to 17.0 volts, the hysteresis circuit maintains the relay energized until the voltage
decreases below 14.0 volts. This assures that the loads being controlled are not energized until the
sensed voltage reaches 14.0 volts. This limits the ON/OFF cycling of the load. The hysteresis may
be adjusted using trimmer R15. Turning R15 CCW will decrease the hysteresis while turning CW will
increase. Unless absolutely necessary it is recommended that the hysteresis remain at the factory
setting.
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SPECIFICATIONS
Input voltage: 10 to 18 volts D.C.
Input amps, relay off: .015
Input amps, relay on: .08
Relay contacts, amps: 30 amperes
Case:non-weatherproof, polypropylene
Weight: 4 ounces
5.10
4,50
3/16" DIA.
2.95
1.55
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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