Insulation monitoring device detected low grounding resistance

What does 3501 mean?

The insulation monitoring device has measured a grounding resistance value that is too low. This indicates a potential ground fault within the PV array, which can pose a safety risk and reduce system performance. The inverter will switch to the 'Disturbance' operating state.

• Ground fault in the PV array.
• Degraded insulation in PV modules or wiring.

Click steps to track your progress.

1. 1

   Perform an insulation resistance test on the PV array to identify the location of the ground fault.