6.Protection
6.1 Protection function
No.
Protection
Function
Note
1
Current limiting
protection
When the charge current of the configured PV array exceeds the rated
current of PV, it will be charged at the rated current.
2
Anti-reverse charge
protection at night
At night, because the battery voltage is greater than that of the PV
module, the battery shall be protected against discharge through the PV
module.
3
AC input over- voltage
protection
When the AC voltage exceeds 280V (230V model) or 140V (120V model),
the AC charge will be stopped and converted to inverter for output.
4
AC input under- voltage
protection
When the AC voltage is lower than 170V (230V model) or 90V (120V
model), the AC charge will be stopped and converted to inverter for
output.
5
Battery overvoltage
protection
When the battery voltage reaches the overvoltage breaking
voltage point, charge from PV and AC power to the battery shall be
automatically stopped to prevent the battery from being
damaged due to overcharge.
6
Battery low- voltage
protection
When the battery voltage reaches the low-voltage breaking voltage point,
the discharge to the battery will automatically stopped to prevent the
battery from damage owing to overdischarge.
7
Load output short circuit
protection
In case of short-circuit fault at the load output end, the output of AC
voltage can be turned off immediately and then restored 1 minute later.
After trying for 3 times, the output load end is still in short circuit state, it
is required to eliminate the short circuit fault of the load at first, and
then turn on the machine again to restore normal output.
8
Radiator
overtemperature
protection
In case of excessive internal temperature, the all-in-one machine shall
stop charge and discharge; after the temperature returns to normal state,
the all-in-one machine shall restore charge and discharge.
9
Overload protection
There is output within 3 minutes after overload protection. The output is
turned off in case of 5 times of continuous overload until the machine is
turned on again. Specific overload grade and duration are shown in the
technical parameter able after the manual.
10
AC reverse flowing
protection
Prevent AC power inverted from battery inverting against reverse flowing
into bypass AC input.
11
Bypass overcurrent
protection
Built-in AC input overcurrent protection breaker.
Solar Energy Storage Inverting & Control All-In-One Machine 29
