Analysis: the current leakage of system or inverter is too high
Solution: 
1. Check if the wiring or connection of DC&AC side existed poor contact or wire damage phenomenon
2. Check if the ground wire connection are connected well among solar panels
3. Check if the inverter, wiring or solar panel is located in the very wet condition.
4. When In a dry environment, to restart inverter ( disconnect DC&AC switch, wait for 5 mins, then turn it on), observe if it can return to normal running.