Grid fault (Frequency Fluctuation)

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The inverter has disconnected from the utility grid because a stand-alone grid was detected or a very large, short-term change in the power frequency occurred. This disconnection is a protective measure.

• Detection of a stand-alone grid (islanding condition).
• Significant short-term fluctuations in the power frequency.

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1. 1

   Check the grid connection for significant short-term frequency fluctuations.