The main function of the voltage controller is to ensure the charging or discharging of the batteries (lead-acid batteries or colloidal batteries) in our off grid system. A high-quality photovoltaic controller must have multiple guarantee functions. Below, the inverter manufacturer will provide a detailed introduction:
Five major functions of photovoltaic controllers
1. Battery overvoltage protection
When the battery voltage reaches the overvoltage point, the controller will automatically pause the high current charging of the battery to avoid damage caused by overcharging.
2. Battery overheating protection function
The controller detects the temperature of the battery based on the temperature sensor. If it exceeds 65 degrees, the controller pauses charging the battery. Automatically resume operation below 55 ° C.
3. Lightning protection protection
This controller only provides protection for low energy lightning strikes. In areas with frequent lightning strikes, it is best to install external lightning rods.
4. Battery over discharge protection
When the battery voltage reaches the low voltage cutoff point, the controller suspends multiple external power supplies to a specific battery. After reaching the recovery point, resume work.
5. Load overload protection
If the current of the load exceeds the rated voltage of the controller, the controller will automatically alarm. If you reduce the power of the load, the photovoltaic controller will automatically resume operation.