SMA SUNNY ISLAND 4.4M Operating Manual page 141

SMA Solar Technology AG
Event number Message, cause and corrective measures
204
Grid incident
The voltage of the generator or of the utility grid of the Sunny Island line conductor Lxx is too
low.
Corrective measures for generator:
Corrective measures in battery-backup system:
301
Rise-in-voltage protection
Rise-in voltage protection of line conductor Lxx
Corrective measures:
405
External grid disconnection due to undesired electrical island
Unintended stand-alone grid is present at connection AC2 of the Sunny Island at line conduc-
tor Lxx.
Corrective measures:
Corrective measures for generator:
Corrective measures for utility grid:
Operating manual
• Adjust the thresholds for the generator voltage of the Sunny Island (see Sunny Island
technical information "Measured Values and Parameters"). As an aid to this, observe
and evaluate the measured values Voltage of external grid connection Lxx during
ongoing operation.
Adjust the generator voltage and/or generator frequency.
• Contact the Service.
• Ensure that the conductor cross-section of the AC cables is correctly sized.
• Ensure that the insulated wires at connection AC2 are securely connected and that the
conductors in the terminals are free of insulation.
• Implement control of the contactor via a Sunny Island multifunction relay. To do so, set
the parameter Operating mode of multifunction relay to Automatic generator
request.
• Set the parameter Sensitivity of generator failure detection to a lower sensitivity
level.
• Contact the Service.
14 Troubleshooting
SI44M-80H-13-BE-en-15 141