What to do if Huawei Inverter says String Reversed?
If you see a 'String Reversed' error on your Huawei Inverter, it means a PV string is connected with reversed polarity. Check if the PV string is reversely connected to the SUN2000. If it is, wait until the PV string current decreases below 0.5 A, set the DC switch to OFF, and correct the PV string polarity.
How to fix Low Insulation Resistance on Huawei Inverter?
A 'Low Insulation Resistance' error on your Huawei Inverter indicates a short circuit between the PV array and the ground, or damp ambient air causing poor insulation. Here's what you should do: 1. Check the output impedance of the PV array to ground. Rectify any short circuits or insulation issues. 2. Ensure the PE cable of the SUN2000 is correctly connected. 3. If the impedance is lower than the specified protection threshold in rainy and cloudy days, set Insulation resistance protection using the mobile app, SmartLogger, or NMS.
What causes Grid Undervoltage on Huawei Inverter?
A 'Grid Undervoltage' error on your Huawei Inverter means the grid voltage is too low. Here's how to address it: 1. If the alarm occurs occasionally, the power grid may be temporarily abnormal. The SUN2000 will automatically recover when the grid returns to normal. 2. If it happens frequently, check if the grid voltage is within the allowed range. If not, contact your local power operator. If it is, modify the grid undervoltage protection threshold via the mobile app, SmartLogger, or NMS with the power operator's consent. 3. If the issue persists, check the connection between the AC switch and the output power cable.
Why does Huawei Inverter show Grid Overvoltage?
A 'Grid Overvoltage' alarm on your Huawei Inverter means the grid voltage is too high. Here's what to do: 1. If the alarm is occasional, the power grid might be temporarily abnormal. The SUN2000 should recover automatically. 2. If the alarm occurs frequently, verify that the power grid voltage is within the allowed range. If it's not, contact the local power operator. If it is, adjust the grid overvoltage protection threshold using the mobile app, SmartLogger, or NMS, with the consent of the power operator. 3. Check for peak voltage issues on the power grid. If the problem continues, contact the power operator.
How to cool down my Huawei Inverter?
If your Huawei Inverter is overheating, it's likely installed in a poorly ventilated area, the ambient temperature is too high, or the device isn't working correctly. Check the ventilation and ambient temperature around the installation location.
What does Grid Overfrequency mean on Huawei Inverter?
If your Huawei Inverter displays a 'Grid Overfrequency' error, it indicates that the power grid frequency is too high. Here's what you can do: 1. If the alarm occurs occasionally, the power grid may be temporarily abnormal. The SUN2000 will automatically recover when the grid returns to normal. 2. If it happens frequently, check if the grid frequency is within the allowed range. If not, contact your local power operator. If it is, modify the grid overfrequency protection threshold via the mobile app, SmartLogger, or NMS with the power operator's consent.
What does Grid Underfrequency mean for Huawei Inverter?
If your Huawei Inverter shows a 'Grid Underfrequency' error, the power grid frequency is too low. Here's how to address it: 1. If the alarm occurs occasionally, the power grid may be temporarily abnormal. The SUN2000 will automatically recover when the grid returns to normal. 2. If it happens frequently, check if the grid frequency is within the allowed range. If not, contact your local power operator. If it is, modify the grid underfrequency protection threshold via the mobile app, SmartLogger, or NMS with the power operator's consent.
What to do if Huawei Inverter shows Grid Failure?
If you're experiencing a grid failure with your Huawei Inverter, it could be due to a power outage, a disconnected AC circuit, or a tripped AC circuit breaker. First, check the AC voltage. Then, verify that the AC circuit is properly connected and the AC circuit breaker is in the ON position.
What causes Unstable Grid Frequency on Huawei Inverter?
If your Huawei Inverter shows an unstable grid frequency, it means the grid frequency change rate does not comply with the local power grid standard. If the alarm occurs occasionally, the power grid may be abnormal temporarily and the SUN2000 automatically recovers after detecting that the power grid becomes normal. If the alarm occurs frequently, check whether the power grid frequency is within the allowed range and contact the local power operator.
What does Abnormal Residual Current mean on Huawei Inverter?
If your Huawei Inverter is showing an 'Abnormal Residual Current' error, it indicates that the insulation impedance on the input side to PE is decreasing during operation. If the alarm occurs occasionally, the external circuit may be temporarily abnormal and the SUN2000 automatically recovers after the fault is rectified. If the alarm occurs frequently or persists, check whether the impedance between the PV string and the ground is too low.
General| Nominal AC grid frequency | 50 Hz / 60 Hz |
|---|---|
| Max. input voltage | 600 V |
| Cooling | Natural convection |
| Protection degree | IP65 |
| Operating temperature range | -25°C to +60°C |
Outlines fundamental safety instructions, personnel, electrical, and environmental requirements.
Guidelines for selecting a location and mounting the SUN2000 (wall/support).
Guides for installing Smart Dongles, WLAN antennas, AC/DC power, and battery cables.
Checklist of items to verify before powering on the system.
Step-by-step guide for powering on the SUN2000 and its components.
Using the FusionSolar app for commissioning, parameters, energy, and battery control.
Lists common alarms, their causes, and troubleshooting steps.
Steps to identify and locate insulation resistance faults in the PV string.
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