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geraldblakeSep 5, 2025
What does Abnormal Residual Current mean on Huawei Network Hardware?
- LLance SimsSep 5, 2025
An Abnormal Residual Current warning on your Huawei Network Hardware indicates that the insulation impedance on the input side to PE has decreased during operation. If this alarm appears occasionally, it may be a temporary external circuit issue, and the SUN2000 should recover automatically once the fault is cleared. However, if the alarm occurs frequently or persists, check whether the impedance between the PV string and the ground is too low.
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