B4850 ESS Unit User Manual
20
Table 4-1 Battery& Inverter power matching table
Hybrid
Inverter
Off-grid
Inverter
B4850
Powerbox
EPS(backup
port)
AC Output
power
AC Output
Power
Min.
parallel
number
System
Energy
(kWh)
Type
System
Energy
(kWh)
≤
1.2kW
1
2.4
Powerbox F-2.5
2.4
≤
2.4 kW
2
4.8
Powerbox F-5.0
4.8
≤
3.6 kW
3
7.2
Powerbox F-7.5
7.2
≤
4.8 kW
4
9.6
Powerbox F-10.0
9.6
≤
6.0 kW
5
12.0
2* Powerbox F-7.5
14.4
≤
7.2 kW
6
14.4
2 * Powerbox F-7.5
14.4
≤
8.4 kW
7
16.8
2* Powerbox F-10.0
19.2
≤
9.6 kW
8
19.2
2 * Powerbox F-10.0
19.2
≤
14.4 kW
12
28.8
3 * Powerbox F-10.0
28.8
Equipment
Use
Charging
a)
The battery's long-term continuous charging current
should be ≤0.5C
b)
If the battery capacity is empty, please charge it within 18
hours after the battery is empty.
Discharging
c)
The long-term continuous discharge current of the battery
should be ≤0.5C
d)
The recommend maximum depth of discharge (DOD)of
Battery PACK is no more than 80%.
4.2 Alarm description and processing
When protection mode is activated or system failure occurred, the alarm signal will be
given through the working status indicator on the front panel of the B4850. The network
management can query the specific alarm categories.
If the fault such as single cell overvoltage, charging over-current, under-voltage
protection, high-temp protection and other abnormalities which affects the output,
please deal with it according to Table 4-2.
Table 4-2 Main alarm and Protection
Statue
Alarm category
Alarm
indication
Processing
Charge
state
Over-current
RED,
Buzzer
start
Stop charging and find out
the cause of the trouble
High temp
RED
Stop charging
Discharge
state
Over-current
RED
Buzzer
start
Stop discharging and find
out the cause of the trouble
High temp
RED
Stop discharging and find
out the cause of the trouble
Total voltage undervoltage
RED
Buzzer
start
Start charging
