Sun Gold Power Co.,Ltd
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sungoldpower.com
28
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 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 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 solar charge inverter
shall stop charge and discharge; after the temperature returns to
normal state, the solar charge inverter 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.
