How to fix Firmware Upgrade Failed on Huawei SUN2000-20KTL?
If your Huawei Inverter displays 'Firmware Upgrade Failed', it indicates that the upgrade process was not completed normally. Upgrade again.
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.
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 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.
What causes Flash Fault on a Huawei SUN2000-20KTL Inverter?
If your Huawei Inverter displays 'Flash Fault', it could be due to a lack of Flash space or bad blocks in the Flash memory, indicating a device problem. Replace monitor board. If the monitor board and equipment are one, replace the entire monitor equipment.
What does Residual Current Abnormal mean on Huawei Inverter?
If your Huawei Inverter displays 'Residual Current Abnormal', it indicates that the insulation resistance against the ground at the input side has become lower, causing excessively high residual current. If the fault occurs accidentally, the SUN2000 automatically recovers to the normal operating status after the fault is rectified. If the fault occurs repeatedly and lasts a long time, check the insulation resistance against the ground of PC arrays is excessively low.
How to troubleshoot Low Array Insulation Resistance on a Huawei SUN2000-20KTL Inverter?
If your Huawei Inverter displays 'Low Array Insulation Resistance', it means the insulation resistance against the ground for PV arrays is less than the minimum value. You should: 1. Check the insulation resistance against the ground for the outputs of PV arrays. If a short circuit occurs, rectify the fault. 2. If the insulation resistance against the ground is less than the default value in a rainy environment, set the insulation resistance threshold.
What causes Cabinet Over-Temp on a Huawei Inverter?
If your Huawei Inverter displays 'Cabinet Over-Temp', it means the operating temperature of the UNS2000 exceeds the upper limit. Improve ventilation to decrease the temperature.
What to do if Huawei SUN2000-20KTL Firmware Upgrade Failed?
A Firmware Upgrade Failed error on a Huawei Inverter means the upgrade process was incomplete. Upgrade again.
What to check for Electrical Grounding Fault on Huawei SUN2000-20KTL Inverter?
An Electrical Grounding Fault on the Huawei Inverter indicates that the neutral wire or PGND cable is not properly connected to the inverter. Ensure that the neutral wire and PGND cable are correctly connected.
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 |
Safety guidelines during product operation and maintenance procedures.
Steps to take before installing, including package checks.
Instructions for support and wall mounting of the SUN2000 unit.
Procedure for connecting protection ground (PGND) cables.
Procedure for connecting the SUN2000 to AC power sources.
Procedure for connecting DC input power cables from PV arrays.
Procedure for connecting communication cables.
Pre-operation checks to ensure normal system startup.
Steps to safely power on the SUN2000 after electrical connection.
Initial setup steps for language, time, and grid code.
Steps to safely power down the unit before performing maintenance.
Daily maintenance tasks, intervals, and common fault troubleshooting.
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