KUSSMAUL 091-134A User manual

INSTRUCTION MANUAL
3 YEAR WARRANTY
KUSSMAUL ELECTRONICS CO., INC.
170 CHERRY AVE., WEST SAYVILLE, N.Y. 11796-1221
DATE: 11-26-03
FILE: IM_091-134-025_Rev_A
TEL: in NY 631-567-0314 TOLL FREE: 800-346-0857 FAX: [phone]
AUTO INTERLOCK IIA
AUTOMATIC TRANSFER AND
BATTERY CHARGER CIRCUIT
ISOLATION SWITCH
MODEL
091-134-025

INTRODUCTION:
The Model 091-134-025 AUTO INTERLOCK IIA is an automatic power transfer relay specifically
designed to isolate various battery charging systems such that ONLYone (1) charging system is
actively charging a battery at any time. Referring to Figure 1 the Model 091-134-025 AUTO
INTERLOCKIIAcanaccomodatethree(3)batterychargingsysteminputsandoutputsasfollows:
INPUTS
1. Conventional 115VAC High Powered or multi-step external battery charger (>10A) via
ShorePower 115VAC Input to High Power Charger.
2. 115VAC Generator equipped with DC output Alternator connected to common battery bank.
3. Low Power DC battery charger (<3A), i.e. Solar Panel, Float Voltage Charger.
OUTPUTS
1.115VAC to conventional high power charger.
2. Isolated DC battery charge circuit for Low Power Charger.
THEORYOFOPERATION:
The Model 091-134-025 AUTO INTERLOCK IIA senses the Generator 115VAC output and the
status of a 115VAC connected “ShorePower” and configures the battery charging isolation as
follows.
! With neither ShorePower connected nor the Generator running the AUTO INTERLOCK IIA
connects the Low Power Charger (LPC) DC circuit to the battery.
!With ShorePower connected the AUTO INTERLOCK IIA transfers the facility supplied power
to the AC input of a High Power Charger (HPC) and opens the DC circuit of the LPC to the
battery.
! With the Generator running the AUTO INTERLOCK IIA senses the generator 115VAC output
and disables the 115VAC ShorePower input (whether present or not) to the HPC and opens
the DC circuit of the LPC to the battery.
The AUTO INTERLOCK IIAprovides three (3) indicatorsfor“StateIndication”inaccordancewith
thefollowingTable
Battery Charging Circuit State and Indication Table
Generator Shorepower Battery Charge Circuit State Indication
OFF OFF LPC ALLOFF
OFF ON HPC Main&Output=ON,Auxiliary=OFF
ON OFF Generator Auxiliary=ON,Main&Output=OFF
ON ON Generator Main&Auxiliary=ON,Output=OFF

5 5
4 4
3 3
2 2
1 1
D D C C
B B
A A
* LOW POWER CHARGER
* GENERATOR
ALTERNATOR
M
+
AC GEN
* 12VDC BATTERY
+-
* TRANSFER SWITCH
115VAC SHOREPOWER
* HIGH POWER CHARGER
AC INPT+12VDC OUT
AC LOADS
GEN AC SENSE IN SHORE PWR AC IN LOW POWER CHARGER + OUTPUT LOW POWER CHARGER + INPUT
115VAC TO HPC
+
-
NEMA 5-15 P/R
KUSSMAUL AUTO ISOLATOR IIA 091-134-025
* CUSTOMER SUPPLIED
KUSSMAUL ELECTRONIC CO. WEST SAYVILLE, NY
FIGURE 1, IM_091-134-025
A
AUTO ISOLATOR IIA
A
11Tuesday, December 02, 2003
Title Size Document Number Rev Date: Sheet of

INSTALLATION:
Refer to Figure 2 for a typical installtion of the Model 091-134-025 AUTO INTERLOCK IIA.

A
-025

INSTALLATION RECORD & WARRANTY
Date Installed
Installed By
Vehicle Identification
Vehicle Owner
WARRANTY
AllproductsofKussmaul Electronics Company Inc.are warrantedtobe
free of defects of material or workmanship.Liability is limited to repairing or
replacing at our factory, without charge, any material or defects which be-
come apparent in normal use within 3 years from the date the equipment
wasshipped.Equipmentistobereturned,shippingchargesprepaidand will
be returned, after repair, shipping charges paid.
KussmaulElectronicsCompany,Inc.shall have no liability fordamages
ofany kind to associated equipmentarisingfromthe installation and /oruse
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.