3
Advanced Charging Technique
Charging curves of the 3-state IUU type, with a boost phase and a floating phase.
The 3-state charging characteristic, used on boats everywhere, saves on charging time. In
addition, the charger can be adapted to all types of battery thanks to its 5 integral
charging curves supervised by a micro controller. Charge cycle starts on with the mains
power-up of product.
Boost Phase
Charging continues at constant current (charger Inom) until the battery reaches the
maximum boost voltage. This voltage is maintained until the charging current falls to
Inom/8 ~Inom/10 boost charge over short period (12 hours) from the mains power-up of
product. This phase makes it possible to supply the maximum amount of energy in the
least possible time.
Floating Phase
The charger supplies just the current necessary to keep the battery at a constant and stable
voltage (floating voltage). This charging mode allows 12-volt equipment to be used
continuously (water pump, refrigeration, auto pilot, radio, lights, etc.) without the
batteries discharging.
It means that the on-board circuit can be used while keeping the battery charge level
constant. WITHOUT BATTERY AND IN SPECIAL CIRCUMSTANCES, THE
POWER MASTER CHARGER SUPPLIES STABLE VOLTAGE.
General form of the charging curve (five possible levels according to battery type)
Top-up Charge
Balance Charge
Fast Charge
CURRENT
VOLTAGE
CAPACITY Ah
BOOTS
ABSORPTION
FLOATING
Charging Current
The nominal current shown in case of nominal voltage is the mean current supplied by
the charger.
Safety Devices
Electronic protection against:
- Output short-circuits
- Battery discharge in the event of mains failure
