Product Description; Installation - Whisper Power WBI 150-2 IG Operation Manual

6 WhisperPower Battery Isolator WBI 150-2 IG | WBI 150-3 IG

Product description

The Battery Isolator is an electronic device which is designed to distribute the charge current with a low volt-
age 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 lat-
est 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 com-
pensation 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 con-
nected 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
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.