What causes String 1-6 Abnormal error on Huawei Inverter?
The Huawei Inverter displays 'String 1-6 Abnormal' when PV strings have been shielded for a long time or have deteriorated. Check if the output current of a PV string is obviously less than the output current of other PV strings. Also, check whether the PV string is shielded.
Why is my Huawei SUN2000-20KTL Inverter showing Cabinet Over-Temp?
If the Huawei Inverter displays 'Cabinet Over-Temp', it means the inverter is installed in a place with poor ventilation. Check if the ambient temperature exceeds the upper limit. If it does, improve ventilation to decrease the temperature.
What causes DC Bus Voltage Fault in Huawei Inverter?
A DC Bus Voltage Fault on your Huawei Inverter means abnormal external conditions have triggered DC circuit protection. This can happen if the inverter input is suddenly disconnected or shielded PV strings cause a sharp change in output power (Reason ID = 3), or if the input energy can't vent quickly due to a sharp change in grid voltage (Reason ID = 9 or 11). The inverter monitors external conditions and should automatically return to normal once the fault is rectified. If the alarm occurs repeatedly, contact Huawei technical support.
What to do if Huawei SUN2000-20KTL shows Invert Module Fault?
The Huawei Inverter indicates an Invert Module Fault when abnormal external conditions trigger converter circuit protection inside the inverter. This could be due to a sharp drop in grid voltage or a short circuit, causing high output current (Reason ID = 4), or the inverter's output short-circuiting (Reason ID = 20). The inverter monitors external conditions and should return to normal once the issue is resolved. Check for any short circuits in the inverter's output cables and fix them.
Why is my Huawei Inverter showing a Grid Voltage Abnormal error?
The grid voltage may be beyond the allowed range. This can happen if the grid A, B, or C phase voltage is less than the allowed range (Reason ID = 1 to 6), or if there's a power outage, a disconnected AC line, or a tripped AC circuit breaker (Reason ID = 29). If it's an accidental grid issue, the Huawei Inverter should automatically return to normal once the problem is resolved. Check if the AC voltage is normal.
What does String 1-6 Reverse mean on Huawei Inverter?
The Huawei Inverter shows 'String 1-6 Reverse' when the cables between PV strings were connected in reverse during installation. Check if the cables between PV strings are correctly connected and reconnect them if necessary.
How to troubleshoot Low Array Insulation Resistance on Huawei SUN2000-20KTL?
The Huawei Inverter shows a Low Array Insulation Resistance error when the insulation resistance against ground of the PV strings is low, possibly due to a short circuit between PV strings and the ground. Check the insulation resistance against the ground of the PV strings and rectify any short circuit.
What does Frequency Abnormal mean on a Huawei SUN2000-20KTL Inverter?
The Huawei Inverter displays a Frequency Abnormal error when the grid's actual frequency is higher or lower than the required value for the local grid. If this alarm occurs accidentally, it's possible there's an issue with the grid. The inverter will automatically revert to normal once the problem is resolved.
General| Max. efficiency | 98.6% |
|---|---|
| Rated AC output power | 20, 000 W |
| Max. apparent power | 22, 000 VA |
| No. of MPP trackers | 2 |
| Max. input voltage | 1100 V |
| Protection degree | IP65 |
| Max. DC Power | 30, 000 W |
| Start Voltage | 200 V |
| Nominal DC Voltage | 600 V |
| Max. Input Current per MPPT | 26 A |
| Nominal AC Grid Frequency | 50 Hz / 60 Hz |
| Adjustable Power Factor Range | 0.8 leading to 0.8 lagging |
| Total Harmonic Distortion (THD) | <3% |
| DC Reverse-Polarity Protection | Yes |
| AC Overcurrent Protection | Yes |
| AC Short-Circuit Protection | Yes |
| DC Insulation Resistance Detection | Yes |
| Residual Current Monitoring | Yes |
| AC Overvoltage Protection | Yes |
| DC Switch | Yes |
| Cooling Method | Natural Convection |
| AC output voltage | 220 V / 380 V, 230 V / 400 V |
| MPPT operating voltage range | 200 V - 1000 V |
| Operating temperature range | -25°C to +60°C |
| Relative Humidity | 0% - 100% |
| Operating Altitude | Up to 4000 m |
| Surge Protection | Type II DC & AC |
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