Why am I getting an Abnormal Grounding error on my Huawei SUN2000-50KTL-JPM0?
If your Huawei Inverter displays 'Abnormal Grounding', it could be due to a disconnected PE cable or the absence of an isolation transformer when the PV string output is grounded. Ensure the PE cable is properly connected. If the PV string output is grounded, verify that the SUN2000 output side connects to an isolation transformer.
What does Phase Wire Short-Circuited to PE mean on Huawei SUN2000-50KTL-JPM0?
If your Huawei Inverter shows 'Phase Wire Short-Circuited to PE', it means the impedance of the output phase wire to PE is low or short-circuited. Check the impedance of the output phase wire to PE to find the low impedance point and fix the fault.
What to do if Huawei SUN2000-50KTL-JPM0 shows Grid Loss?
If the Huawei Inverter shows a 'Grid Loss' error, it means either the power grid is experiencing an outage or the AC circuit is disconnected, or the AC switch is off. After the power grid recovers, the alarm should disappear automatically. Ensure the AC power cable is correctly connected and the AC switch is turned ON.
What causes Grid Underfrequency on a Huawei SUN2000-50KTL-JPM0 Inverter?
If your Huawei Inverter displays 'Grid Underfrequency', it means the grid frequency is too low. If this happens briefly, it might be a temporary grid issue, and the SUN2000 should recover automatically. If it happens often, check if the grid frequency is within the acceptable range; if not, contact your local power operator. If it is within range, you might need to adjust the underfrequency protection threshold with their consent.
Why does my Huawei SUN2000-50KTL-JPM0 show Grid Overfrequency?
If your Huawei Inverter is showing 'Grid Overfrequency', it indicates the grid frequency is too high. If this is a one-time occurrence, it might be a temporary grid issue, and the SUN2000 should recover automatically. If it happens frequently, check if the grid frequency is within the acceptable range; if not, contact your local power operator. If it is within range, you may need to adjust the overfrequency protection threshold with their consent.
What causes Output Overcurrent on a Huawei Inverter?
If your Huawei Inverter displays 'Output Overcurrent', it's likely due to a voltage drop or short circuit in the power grid. The inverter should automatically recover once the fault is resolved. If the problem persists, check for output short circuits. If the issue continues, contact Huawei technical support.
Why is my Huawei SUN2000-50KTL-JPM0 showing Cabinet Overtemperature?
If a 'Cabinet Overtemperature' alarm appears on your Huawei SUN2000, it could be due to poor ventilation, high ambient temperature, or a malfunction. Check the ventilation and temperature around the installation. Improve ventilation if needed. If conditions are normal, contact Huawei technical support.
What to do for Abnormal String Power on Huawei Inverter?
If you're seeing 'Abnormal String Power' on your Huawei Inverter, it could be due to shading or PV string deterioration. Check if the current of the affected PV string is lower than others, and ensure it's not shaded and the number of PV strings matches the configuration. If shading isn't the issue, inspect the PV string for damage.
How to fix String Reverse Connection on Huawei SUN2000-50KTL-JPM0 Inverter?
If the Huawei Inverter shows 'String Reverse Connection', it means the PV string is connected backward. Wait until night when solar irradiance is low and the PV string current is less than 0.5 A. Then, turn off the two DC switches and correct the PV string connection.
How to troubleshoot Low Insulation Resistance on Huawei SUN2000-50KTL-JPM0 Inverter?
If your Huawei Inverter is showing 'Low Insulation Resistance', it could be because the PV string is short-circuited to PE or the power cable insulation to ground is poor due to moisture. Check the impedance between the PV string and the PE cable for any shorts and rectify them. Ensure the PE cable is correctly connected. If the impedance is low in cloudy or rainy conditions, you can reset the insulation resistance protection.
General| Model | SUN2000-50KTL-JPM0 |
|---|---|
| Type | String Inverter |
| Max. DC Voltage | 1100 V |
| Maximum DC Input Voltage | 1100 V |
| Start Voltage | 200 V |
| Input Voltage Range | 200 V - 1000 V |
| Number of MPPTs | 4 |
| Rated AC Power | 50000 W |
| Rated Output Power | 50000 W |
| Rated AC Voltage | 400 V |
| Rated Output Voltage | 400 V |
| Output Frequency | 50 Hz / 60 Hz |
| Max Efficiency | 98.6% |
| European Efficiency | 98.2% |
| Operating Temperature Range | -25 °C to +60 °C |
| Protection Degree | IP65 |
| Max. DC Power | 50 kW |
| MPPT Voltage Range | 200 V - 1000 V |
| Max. AC Power | 50 kW |
| Maximum Output Power | 55000 W |
Provides general safety guidelines, operational disclaimers, and personnel requirements.
Covers safety during installation, electrical connections, and maintenance.
Details environment, structure, and space requirements for mounting.
Steps for support-mounted and wall-mounted bracket installation.
Step-by-step guide for physically installing the inverter unit.
Crucial safety warnings before making electrical connections.
Instructions for connecting AC output power cable, including wiring.
Guides on connecting DC input power cables and precautions.
Instructions for installing RS485 and RJ45 communication cables.
Checklist for pre-power-on verification of the SUN2000.
Procedure for safely powering on the SUN2000 and connecting the app.
Procedure for safely powering off the SUN2000 and its precautions.
Lists common alarms, their causes, and troubleshooting measures.
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