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Product description
The Battery Isolator is an electronic device which is
designed to distribute the charge current with a low
voltage drop between several (sets of) batteries with the
same nominal voltage. The Battery Isolator prevents the
current from flowing from one battery to another. The
Battery Isolator can only be installed in the positive lead
between the supplying source (for instance a charger or
an alternator) and the batteries. Therefore the negative
output of the supplying source should be connected
directly to the negative connections of the battery sets.
The Battery Isolator has no voltage drop when the
batteries are fully charged. This is achieved by using the
latest electronic technologies, other diode splitters have at
least a voltage drop of 0,7 Volt and at a high charging
current this voltage drop can reach 1,5 Volt. The voltage
drop of the Battery Isolator will never exceed 0,4 Volt at
max amperage. At a charging current of 20 Amps. per
battery, the voltage drop is negligible. The Battery Isolator
has therefore no influence on the charging characteristics
of the charger or the alternator. Diode compensation is not
required to be able to charge the batteries up to 100%
IG connection
The IG-connection can be used to start modern electronic
regulated alternators charging the batteries. These
alternators have to measure a certain voltage at the B+
terminal. In this case the IG-connection has to be
connected to the batteryvoltage coming from the ignition
key switch. This is another unique feature of the WBI 150-
2 IG & WBI 150-3 IG.
Installation
Be sure that the output of the supplying source is switched
off during installation. Disconnect all electrical connections
to the charger/ alternator and the batteries. Also be sure
that no consumers are connected to the batteries during
installation, to prevent hazardous situations. Install the
Battery Isolator not only as close as possible to the
supplying source, but to the batteries as well, but do not
install The Battery Isolator straight above the batteries
because of possible corrosive sulphur fumes. The Battery
Isolator must be installed in a well-ventilated environment,
as high currents will heat up the Battery Isolator.
Preferably, the battery isolator should be mounted on a flat
metal surface (never directly to the main engine), with the
fins vertical.
For correct connection see drawing. Connect the negative
poles of the battery sets and the supplying source to a
common ground. When DC-power is available from the
Battery charger / Alternator, the green LED on top of the
Battery Isolator illuminates
4
The Battery Isolator automatically detects the nominal
charge voltage (12V or 24V). Unlike conventional battery
isolators, the Battery Isolator is almost free of voltage
drops. Therefore, when the Battery Isolator is applied, the
output voltage of the supplying source should NOT be
increased for diode compensation. No internal or external
settings are required.
Safety regulations and measures
1. Install the Battery Isolator according to the stated
instructions.
2. Never use the Battery Isolator at a location where there
is danger of gas or dust explosions.
3. Connections and safety features must be executed
according to the locally applicable regulations.
4. Use cables with appropriate size wire and keep the
cable connections as short as possible. Use reliable
terminals and fasten the bolts tightly, but do not over
torque.
Liability
Manufacturer cannot be held liable for:
• Damage resulting from the use of the Battery Isolator.
• Possible errors in the included manual and the
consequences of these.
Guarantee terms
The manufacturer guarantees that the Battery Isolator has
been built according to the legally applicable standards
and stipulations. During production and before delivery all
Battery Isolators were exhaustively tested and controlled.
If you fail to act in accordance with the regulations,
instructions and stipulations of this user's manual, damage
can occur and/or the unit will not fulfil the specifications.
This may mean that the guarantee will become null and
void. The guarantee period is 2 years.
Specifications
Type
WBI 150/2 IG
Number of
2
outputs
Max current
150
System
12 – 24 VDC
voltage
Input voltage
8 – 30 VDC
range
Voltage drop
0.0V@10A /
0.1V@20A
Dimensions
146 x 99 x 85
(l x h x d)
mm
Weight
685 g
OPERATION MANUAL
WBI 150/3 IG
3
150
12 – 24 VDC
8 – 30 VDC
0.0V@10A /
0.1V@20A
146 x 85 x 152
mm
810 g
February 2012 / WBI
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