FAQ

Analysis：Grid frequency over frequency/grid frequency under frequency.

Solution：Check if the frequency setting in the protection parameters is correct.Waiting for the grid frequency to be normal

Analysis：The AC voltage of a certain phase is greater than 1.4 times the rated voltage or the safety protection value/less than the safety protection value or 0.5 times the rated voltage.

Solution：Waiting for the three-phase voltage to return to normal

Analysis：The d-axis voltage is less than 60% of the effective value of the grid voltage, or the phase sequence is connected incorrectly.

Solution：Wait for the grid voltage to return to normal. Or adjust the order of three-phase connection

Analysis：AC slave contactor failure reported three consecutive times

Solution：Contact after-sales personnel to replace the contactor with a new one

Analysis：Three consecutive reports of AC main contactor failure.

Solution：Contact after-sales personnel to replace the contactor with a new one

Analysis：Three consecutive reports of DC auxiliary contactor failure.

Solution：Contact after-sales personnel to replace the contactor with a new one

Analysis：Three consecutive reports of DC main contactor failure.

Solution：Contact after-sales personnel to replace the contactor with a new one