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3501
Insulation monitoring device detected low grounding resistance
SMA · SUNNY CENTRAL 500CP XT / 630CP XT Solar Inverter
Was bedeutet 3501 ?
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.
Häufige Ursachen
- Ground fault in the PV array.
- Degraded insulation in PV modules or wiring.
Reparaturschritte & Checkliste
Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.
- 1
Perform an insulation resistance test on the PV array to identify the location of the ground fault.
Verifizierte technische Daten. Zuletzt aktualisiert: March 2026
Verwandte Fehlercodes
Quelle: SMA SUNNY CENTRAL 500CP XT / 630CP XT Solar Inverter