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Victron Skylla-i 24 80 (3) Manual

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DS-1. Automatic equalization. When DS-1 is switched on, the absorption charge will be followed by a voltage limited constant
current period (see table). The yellow LED “abs” will blink during equalization.
The current is limited to 8% of the bulk current for all VRLA (Gel or AGM) batteries and some flooded batteries, and to 25% of
the bulk current for all tubular plate batteries. The bulk current is the rated charger current (80A or 100A) unless a lower setting
has been chosen (charge current can be reduced with the current setting potentiometer and rotary switch in position 8, or with
the Can bus interface).
If, as recommended by most battery manufacturers, the bulk charge current is about 20A per 100Ah battery capacity (i.e. 500Ah
for a 100A charger), the 8% limit translates to 1,6A per 100Ah battery capacity, and the 25% limit translates to 5A per 100Ah
capacity.
In case of all VRLA batteries and some flooded batteries (rotary switch position 1, 2 or 3) automatic equalization ends when the
voltage limit maxV has been reached, or after t = (absorption time)/8, whichever comes first.
For all tubular plate batteries automatic equalization ends after t = (absorption time)/2.
Warning
Some battery manufacturers do recommend a constant current equalization period, and others do not. Do not use
constant current equalization unless recommend by the battery supplier.
Rotary switch position 8: manual setting potentiometers
These potentiometers provide adjustable levels for (from top to bottom):
• bulk current (range 0A .. 100A for a 100A charger)
• absorption voltage (range 11.5V .. 33.5V)
• float voltage (range 11.5V .. 33.5V)
Control direction is such that the values increase when turning the potentiometer clockwise. For easy adjustment the charger
will automatically jump to the appropriate mode as soon as it detects a change in the position of a potentiometer. When satisfied
with the settings, restart the charger and it will go through the regular charge sequence using the new settings.
Software version 2.01 and higher: when adjusting, the current and voltage will be indicated by the LED bars (blinking) on the
Skylla-i, and by the display (blinking) on Skylla-i control panel.
Rotary switch position 9: DC power supply mode
The charger can be set to operate as a DC power supply.
In this mode, the charger functions as a constant voltage source with a maximum output current of 80 resp. 100A. By default the
output voltage is set to 24V, if needed the output voltage can be changed by adjusting the absorption voltage potentiometer
(range 11.5V .. 33.5V). When satisfied with the new setting switch off the charger using the main on/off switch and it will store
the voltage level.
When adjusting, the voltage will be indicated by the LED bars (blinking) on the Skylla-i, and by the display (blinking) on Skylla-i
control panel.
3.4. Temperature compensation
The temperature sensor should be connected to the minus pole of the battery.
The temperature compensation is set at -32mV/°C for all 24V lead acid batteries (see table and fig 7), and all charge states.
The temperature sensor must be installed when:
• ambient temperature of the battery is expected to regularly be lower than 15°C or to regularly exceed 30°C
• charge current exceeds 15A per 100Ah battery capacity
Temperature compensation is not required for Li-Ion batteries.
3.5. Manual equalize function
With the equalize button on the front, the charger can be put in equalize mode only during absorption and float periods. When
the charger is still in bulk mode equalization is not possible.
To enable equalization, press the equalize button for three seconds. The yellow led "abs" and “bulk” will alternate during
equalization.
Current and voltage limits are identical to the automatic equalize function (see section 3.3). The equalize duration is however
limited to max. 1hr when triggered with the equalize button.
3.6. Power Control – maximum use of limited shore current
A maximum input current can be set in order to avoid fusing the mains supply.
This adjustment is only available with the optional Skylla-i control panel or the Color Control GX panel.
… 10 …


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