Narada Power Source Co., Ltd. 12REXC operation manual V1.0
9
Table3-1 Home energy storage system parameter setup table (48V system)
Parameter name
Unit
Grid
Off-grid
Floating Voltage per cell
V/cell
2.30
2.30
Equalization Voltage per cell
V/cell
2.25
2.25
Charging Current
A/cell
0.1C
10
0.2C
10
Discharge under-voltage protection
per cell
V
Please refer to table 3-2
Condition To Change Equalization
Charge To Float Charge
mA/Ah
＜
5
＜
5
Condition to Change Float Charge To
Equalization Charge
mA/Ah
＞
50
＞
50
Pack equalization voltage
V
55.2
55.2
Pack floating voltage
V
54.0
54.0
Pack charging current
A
0.1C10
0.2C10
Pack discharge under-voltage
protection
V
Please refer to table 3-2
Temperature Compensate Ratio With
Floating Voltage
mV/
℃
/
cell
-3
-3
Temperature Compensate Ratio With
Equalization Voltage
mV/
℃
/
cell
-5
-5
High Temperature Warning
℃
35
35
Short circuit protection current
A
Please refer to table 3-2
1.
The voltage in above table is at 25
℃
. Please adjust the data according to table 3-3 at
other temperature.
2.
Energy storage system can be off-grid power supply and grid power supply
according to real situation. The off-grid defined as tough power supply, to protect the
battery better, please set refer to above table or contact to manufacture.
3.
Above are standard setup parameters in table 3-1. We suggest you to set up end
voltage (LVBD) based on different load current to make the battery life longer. Please
refer to table 3-2.
Table 3-2 Voltage setup parameter of LVBD and LVLD
Load current
（
A
）
End voltage
（
V/cell
）
LVBD for 48V system
（
V
）
I
＜
0.025C
10
1.97
47.3
0.025C
10
≤I
＜
0.05C
10
1.92
46.1
