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wallsheatherSep 1, 2025
What does Abnormal Residual Current mean on Huawei Inverter?
- CChristy AndersonSep 1, 2025
If your Huawei Inverter indicates an Abnormal Residual Current, it means the insulation impedance of the input side to PE decreases when the SUN2000 is operating. If the alarm occurs occasionally, the external circuit may be abnormal temporarily and the SUN2000 will automatically recover after the fault is rectified. However, if the alarm occurs frequently or persists, check whether the impedance between the PV string and the ground is too low.