Selectronic SP PRO 2i Series, Инструкция по эксплуатации

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SP LINK | Configuration Settings
Doc #OI0005 Rev26 2020
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39
FLOAT STAGE : After completion of the charge cycle the inverter will enter the
FLOAT STAGE . This setting reflects a Voltage that the system will maintain, with
a good state of charge, for a long period. If the generator continues to run past the
absorption or equalise stage for any reason, such as maintaining a high load, the
inverter will keep the batteries at the float stage Voltage – not exceeding the Current
set – until the generator is shut off. When the generator or mains voltage is present
for longer than 24 hours the charger will drop to the Long Term Voltage to maintain
a good state of charge for the lowest charge current. This is particularly useful in
boating marinas where shore power may be connected for long periods.
SoC will be set to 100% when Float Charging mode is entered.
THE EQUALISE STAGE is not employed every time the batteries are charged but is
a periodic charge process that raises the battery Voltage above the normal voltage
settings to a point where the batteries will, essentially be in a state of overcharge.
This is necessary to overcome any variations in voltage between individual cells
that occur naturally in a battery bank that is cycled between load and charge cycles.
These variations can cause a drop in performance in the battery bank and must be
“equalised”.
In flooded cells this process is sometimes called “gassing”, that is when the batteries
sound as if they are lightly boiling. In flooded cells this bubbling helps to circulate the
electrolyte fluid within the cells.
The Equalise stage will raise battery voltage to the equalise
Voltage
level and
maintain this voltage for the equalise Time. The equalise Current will not be
exceeded. If using Sealed batteries, the EQUALISE STAGE may be at the same
voltage as Absorption voltage but for a longer period of time. Check with the Battery
supplier.
TEMPERATURE COMPENSATION: Most lead acid batteries
require the charging voltages to change with temperature
(Temperature Compensation). The temperature compensation
between the Min. Comp. Temp and Reference Temp. A is
set in the Ref. A Temp. Co . The temperature compensation
between the Max. Comp. Temp and Reference Temp. B is
set in the Ref. B Temp. Co .
The temperature compensation between the
Reference Temp
A and Reference Temp. B is zero and equals the charge
voltage setting.
Ref. A Temp. Co . and Ref. B Temp. Co sets the charge
voltage change in mV per deg C for each 2V cell .
For example using settings in the diagram to the right and assuming a 48V battery bank (24 cells) and a
charging voltage target of 57.6V (absorption stage).
Charge voltage at 10C = 57.6 + ((10-25) x -5.0 x 24 / 1000) = 59.4V
Charge voltage at 40C = 57.6 + ((40-30) x -3.0 x 24 /1000) = 56.88V
Charge voltage between 25C and 30C is 57.6V
For your reference the total voltage compensation per deg C for the battery pack is displayed.
Temperature compensation is set to zero and is not available when Lithium Batty Type is selected.