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Manual Titan
7
2. DESCRIPTION
2.1 The Titan battery charger
The Titan battery charger is a fully automatic charger for 24V or 48V batteries and is
powered by a mains voltage of 230Vac, 50Hz. It charges the battery according to the IUoUo
characteristic, which is a 3-stage charging characteristic. This characteristic is shown in
illustration 1. While charging, the Titan continuously measures the battery voltage and
current and bases the charging voltage and current on the measured values.
Type Boost voltage Float voltage Minimal
voltage
24V / 80A 28,5 Vdc 26,5 Vdc 25 Vdc
24V / 100A 28,5 Vdc 26,5 Vdc 25 Vdc
24V / 100A 3-Ph 28,5 Vdc 26,5 Vdc 25 Vdc
48V / 50A 57 Vdc 53 Vdc 50 Vdc
Assuming that the battery is discharged, the Titan charger starts charging in the boost-charge
mode. In this mode the battery is charged until the battery voltage reaches the boost voltage.
At this point the battery is charged to approximately 80% of its maximum capacity. This is
the end of the boost-charge mode and the Titan charger automatically switches to the
equalize-charge mode.
During the equalize-charge mode the charging voltage stays the same as the boost voltage but
the charge current slowly decreases. The duration of this mode is pre-selectable to 4, 8 or 12
hours. The standard time of the equalize-mode is 4 hours. After this time the Titan charger
automatically switches into the float-charge mode.
In the float-charge mode the charge voltage changes into the float voltage and the charge
current continues to decrease. This mode lasts for 20 hours.
After the float-charge mode the charger returns to the equalize-charge mode for 30 minutes,
this is to compensate for the normal leakage or self discharge of the battery.
Illustration 1.
The IUoUo charge
characteristic.