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.
What causes Grid Undervoltage on a Huawei SUN2000-50KTL-JPM0?
If your Huawei Inverter shows a 'Grid Undervoltage' error, it means the grid voltage 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 voltage is within the acceptable range; if not, contact your local power operator. If the voltage is within range, you might need to adjust the undervoltage protection threshold with the power operator's consent. Also, check the AC circuit breaker and AC output power cable if the problem continues.
Why does my Huawei Inverter show Grid Overvoltage?
If a 'Grid Overvoltage' alarm appears on your Huawei Inverter, it means the grid voltage is too high. First, check if the grid connection voltage exceeds the upper threshold and contact the local power operator if it does. If you have confirmed the overvoltage and have consent from the power operator, you can modify the overvoltage protection threshold. Also, ensure the peak grid voltage does not exceed the upper threshold.
How to fix Huawei Inverter High String Input Voltage?
If your Huawei Inverter displays 'High String Input Voltage', it indicates the PV array is incorrectly configured. Too many PV modules are connected in series, causing the PV string open-circuit voltage to exceed the SUN2000's maximum operating voltage. Reduce the number of PV modules connected in series until the PV string open-circuit voltage is within the limit. The alarm should then stop.
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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