Huawei · SUN2000 Solar Inverter
The DC component of the SUN2000 output current exceeds the specified upper threshold. An excessive DC component can cause transformer saturation in the grid and affect other grid-tied equipment.
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Verify grid voltage and frequency at the inverter's AC output terminals are stable and within specified operating limits.
Check inverter grid-tie parameters and local grid code settings, especially those related to DC injection limits, to ensure proper configuration.
Inspect all AC output cabling and grounding connections from the inverter to the grid for secure termination, absence of corrosion, and physical integrity.
Monitor the inverter's diagnostic logs and real-time output current data for any other correlating error messages or abnormal waveform characteristics.