7.9 BATTERY CHARGER

SERVICES CHARGER

On board your yacht there is a fully automatic and high-performance service battery charger. The battery charger implements an optimised charging technique that charges the batteries quickly and safely while also powering the connected loads. In addition, each charger is protected against short circuits, overloads and high temperatures (typical of engine rooms).
A front panel meter on each charger displays a reading of remaining battery capacity value, in a manner analogous to a car’s fuel gauge.
The more LEDs are lit, the more the battery is charged.

Energisation
The battery charger is energized when the switch is in the ON position. One of the LEDs on the front side turns on and the charge starts immediately.

De-energisation
The battery charger is de-energised when the switch is set to OFF.
The connection between the electric mains and the battery charger is not interrupted with the switch.

Bulk (LED 1 on)
The battery is discharged only when the first LED Bulk/ON (Quick charge/ ON) is lit. Now the battery charger provides full power and the battery voltage increases slowly. After having reached the 27.6 V level, the battery is about 25% charged and the second LED turns on.

(LEDs 1 and 2 on)
The battery has been charged to 25%. The battery charger still provides the maximum output current and voltage increases up to the level of absorption voltage. Phase A can last up to 6 hours max.

Absorption (LEDs 1, 2 and 3 on)
The battery has been charged to 50%. The battery charger limits the charging voltage to a safe level and the charging current decreases slowly.

(LEDs 1 to 4 on)
The battery has been charged to 75%. The charging voltage is limited to the absorption level, because the battery is nearly full. Current consumption will continue decreasing.

Maintenance (LEDs 1 to 5 on)
When all the LEDs are lit, the battery is fully charged. The slow maintenance/charging programme provides a output voltage, high enough to keep the batteries with a 100% charge, but low enough to prevent that the batteries suffer unnecessary constraints. The battery charger can now deliver full power to the connected utilities/loads.

CAUTION

Disconnect the shore power supply connections when the system is not in use.

ENGINE BATTERY CHARGER

Your yacht is equipped with an on board engine battery charger.
The Chargemaster is a fully automatic battery charger.
This means that under normal conditions it can remain switched on with AC power and batteries connected. It has an automatic input device that allows operation with virtually any available AC power source. The three-step Plus charging method ensures that the batteries are always 100% charged.
With an external AC source connected, the charger also functions as an AC/DC converter to supply DC loads connected to the batteries.
The battery charger can be activated by keeping the POWER switch pressed for about 3 seconds.
The POWER switch will start blinking green and the charging status will be displayed. If necessary and if AC power is provided, the battery charger will start charging the batteries.
In the event that the charger is in standby or the AC power supply is interrupted, the POWER switch starts flashing red. After about two minutes, it stops flashing and the display turns OFF, thus preventing the battery from charging by the indicator light.

GENERATOR BATTERY CHARGER

Your yacht is equipped with two on board generator battery charger.
Each battery charger is located near its generator.
The battery charger regulates the voltage by stabilising it and thus ensuring the optimal value even in the presence of fluctuations due to starting heavy loads. The galvanic isolation between input and output satisfies the specific requirements of some communication devices and engine electronics.

The battery charger works automatically. Under normal conditions there is no need for specific actions. Despite its low power consumption under no load, the battery charger must be disconnected from the supply battery when not in use to avoid discharging the battery.