Troubleshooting of string inverters
How to restart the module of the inverter?
Answer: Unplug and replug the module and restart the machine.
Does adjusting the safety regulations of the inverter affect power generation?
Answer: If the safety regulations are not adjusted properly, it may cause the grid voltage to exceed the limit.
Relay detection abnormality
Answer: 1) Disconnect the DC circuit breaker of the inverter
2) Wait for the LCD/LED screen of the inverter to go off
3) Reconnect the DC circuit breaker and confirm again
4) If the fault occurs again, please contact after-sales service by phone.
DC bus voltage is too high
Answer: 1) Disconnect the DC circuit breaker of the inverter
2) Wait for the LCD/LED screen of the inverter to go off
3) Reconnect the DC circuit breaker and confirm again
4) If the fault occurs again, please call the after-sales service.
24. When the power station is out of power, should the switch on the photovoltaic side or the grid side be turned off first? Which side of the switch should be closed first when sending power to the grid?
Answer: When the photovoltaic power station is out of power, first turn off the DC (module side) and then turn off the AC (inverter side); when sending power, first turn on the AC and then turn on the DC. The AC always comes first.