ASHAPOWER SURYA-50 Руководство пользователя - Страница 8
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charging voltage, to remove sulfation and bring all cells of the battery to similar levels by increasing the
voltage to 2.50V/cell or 10 percent higher than the recommended charging voltage. Equalization charging
also equalize acid stratification, a condition where acid concentration is greater at the bottom of stationary
batteries than at the top level. Battery experts recommend periodic equalization charging to keep the
batteries healthy (once in every three month).
SMF, VRLA, AGM, GEL Batteries.
SMF (sealed maintenance free), SLA (Sealed lead acid) and VRLA (Valve regulated lead acid) batteries are
same. Its 2 types of cells are (AGM (Absorbed glass mat) and GEL cells. They are maintenance free batteries
which do not require regular water filling, its composition of electrodes and electrolyte is same as flooded lead
acid batteries. These batteries do not need to be kept upright as the electrolyte is in the form of gel or paste).
Un-attended equalization charging of old battery is risky as there is chance for over heating of
battery plates, overflowing of electrolyte and damaging of batteries.
Remove all loads from the batteries before starting equalization charging. Fill all the battery cells with distilled
water in the required level. It is better to remove all the lids of the batteries before starting equalization
charging as the batteries will begin gassing and bubbling vigorously at the peak stage of boost charging.
Ensure the batteries are installed in a good ventilated area. Even a spark from a metal cutter, loose contact of
battery wires may cause fire hazard and explosion of batteries. During equalization charging, check the
changes in the specific gravity of acid of each cells every hour and stop charging if the gravity and voltage of
cells no longer rises during the gassing stage. Further improvement of the cell is not possible and continued
charging will spoil batteries.
Enabling limited ampere charging in MPPT charge controller.
Enter settings menu 14. AMP-LT
Enabling equalization charging in MPPT charge controller.
In default equalization charging is not active
Enter settings menu and configure following settings for enabling equalization charging.
4.EQLZ-V :
Set the upper limit of equalization voltage.
As the equalization is an over charging process, ask a battery expert before setting the maximum applicable
upper voltage limit. Blind settings will spoil the batteries.
5.BVLC-V :
Select the battery low voltage level to start equalization charging based on battery terminal
volt. (Configure a value slightly less than inverter low voltage cut o to avoid frequent equalization charging)
6.N-DAYS :
Set period of Equalization charging.
N-DAYS = 0 =>Disables all modes of Equalization charging
N-DAYS = 1 =>Equalization charging starts every alternate days
N-DAYS = 2 =>Equalization charging starts every 2 days
............................................................................................
N-DAYS = 30 => Once in a month (Recommended)
N-DAYS = 90 => Once in 3 months
N-DAYS = 180 => Once in 6 months
It is recommended to preset 14th Menu AMP-LT in mode "2" (initial limited ampere charging) if
equalization charging is activated.This option is recommended because system will not shift from grid to
solar mode till the equalization charging is completed which helps to rise battery terminal voltage
gradually and attains maximum gravity of electrolyte and gets good backup from batteries.
(Follow function settings page in user manual)
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