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B3 ESS Unit User Manual
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 B3. The network
management can query the specific alarm categories.
If the fault such as single cell over-voltage, charging over-current, under-voltage
protection, high-temp protection and other abnormalities which affects the output,
please deal with it according to Table 4-1.
Table 4-1 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 under-voltage
RED
Buzzer
start
Start charging
Cell voltage under-voltage
RED
Buzzer
start
Start charging
4.3 Analysis and treatment of common faults
Analysis and treatment of common faults in the Table 4-2:
Table 4-2 Analysis and treatment of common faults
No
.
Fault phenomenon
Reason analysis
Solution
1
The indicator does
not respond after the
power on
Total voltage lower than 35V
Check the total voltage
2
No DC output
Battery data status is abnormal.
Battery gets into over-
discharged protection
Read the battery
information on the
monitor.
3
The DC power supply
time is too short
Battery capacity become
smaller
Storage battery
replacement or add
more modules
4
The battery can't be
fully charged to 100%
Charging voltage is too low
Adjust charging voltage
at 53.5V or 54V
5
The power cable
sparks once power on
and ALM light RED
Power connection short-circuit
Turn off the battery,
check the cause of the
short circuit
