Unstable grid frequency

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The power grid frequency's actual change rate does not meet the requirements of the local power grid code. This can indicate temporary power grid abnormalities or a persistent issue with grid frequency stability.

• Power grid exception: The actual change rate of the power grid frequency does not meet the requirements for the local power grid code.

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1. 1

   Monitor if the alarm occurs occasionally, indicating a temporary power grid abnormality. The SUN2000 automatically recovers when the grid stabilizes.

2. 2

   If the alarm persists, check whether the power grid frequency is within the acceptable range. If it is outside the acceptable range, contact the local power operator.