Ground fault on ungrounded terminal of PV array

What does 3507 mean?

A ground fault has been detected on the ungrounded terminal of the PV array. This is a critical safety issue and will cause the inverter to stop feeding power until the disturbance is acknowledged and rectified.

• Ground fault in the PV array on the ungrounded side.

Click steps to track your progress.

1. 1

   Check the PV array for ground faults using an insulation resistance tester. Pay special attention to the ungrounded terminals.