What causes String Reverse Connection on Huawei SUN2000-12KTL-M2 Inverter?
If your Huawei Inverter reports a 'String Reverse Connection' error, it means the PV string polarity is reversed. To correct this, 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 then adjust the PV string polarity.
What to do if Huawei Inverter shows Grid Loss?
If your Huawei Inverter indicates a 'Grid Loss' error, it means the power grid might be experiencing an outage, or the AC power cable could be disconnected, or the AC circuit breaker is OFF. To resolve this, first, verify that the AC voltage is normal. Second, ensure that the AC power cable is properly connected and the AC switch is in the ON position.
How to fix Low Insulation Resistance on Huawei SUN2000-12KTL-M2 Inverter?
If your Huawei Inverter displays a 'Low Insulation Resistance' error, it could be due to the PV array being short-circuited to ground or the power cable not being well insulated, especially in a moist environment. Here's what you should do: * Check the impedance between the PV array output and PE, and eliminate any short circuits or points of poor insulation. * Ensure the PE cable for the inverter is correctly connected. * If you're certain the impedance is less than the preset protection threshold in cloudy or rainy conditions, you can log in to the mobile app, SmartLogger, or NMS to reset the insulation impedance protection threshold.
How to troubleshoot Abnormal PV Module Configuration on Huawei SUN2000-12KTL-M2 Inverter?
If your Huawei Inverter reports 'Abnormal PV Module Configuration,' it means the PV module configuration doesn't meet requirements, or the PV module output is reversely connected or short-circuited. Check whether the total number of PV modules, the number of PV modules in a string, and the number of PV strings meet requirements, and verify that the PV module output isn't reversely connected.
Why does my Huawei SUN2000-12KTL-M2 display Output Overcurrent?
If your Huawei Inverter is showing an 'Output Overcurrent' error, it indicates that the grid voltage has dropped dramatically or the power grid is short-circuited, causing the inverter's transient output current to exceed the upper threshold and triggering protection. The inverter monitors its external working conditions in real time and will automatically recover once the fault is rectified. If the alarm occurs frequently and affects the power production, check whether the output is short-circuited. If the problem continues, contact your dealer or Huawei technical support.
What does Abnormal Residual Current mean on Huawei Inverter?
If your Huawei Inverter is showing an 'Abnormal Residual Current' error, it indicates that the input-to-ground insulation impedance has decreased during the inverter operation. To address this: 1. If the alarm occurs accidentally, the external power cable may be temporarily abnormal. The inverter will automatically recover once the fault is rectified. 2. If the alarm occurs frequently or persists, check that the impedance between the PV string and ground is not below the lower threshold.
What does Output DC Component Overhigh mean on my Huawei Inverter and how to resolve it?
If your Huawei Inverter displays an 'Output DC Component Overhigh' error, it indicates that the DC component of the output current exceeds the specified upper threshold. The SUN2000 detects its external working conditions in real time and automatically recovers after the fault is rectified. If the alarm occurs frequently, contact your dealer or Huawei technical support.
What causes Transient AC Overvoltage on a Huawei Inverter and how can I fix it?
If your Huawei Inverter reports a 'Transient AC Overvoltage' error, it means the inverter has detected that the phase voltage exceeds the transient AC overvoltage protection threshold. 1. Check if the grid connection voltage exceeds the upper threshold. If yes, contact the local power operator. 2. If you have confirmed that the grid-tied voltage exceeds the upper threshold and have obtained the consent of the local power operator, modify the overvoltage protection threshold through the mobile phone app, SmartLogger, or NMS. 3. Check whether the peak power grid voltage exceeds the upper threshold.
Why is my Huawei SUN2000-12KTL-M2 Inverter showing Output DC Component Overhigh?
If your Huawei Inverter is showing an 'Output DC Component Overhigh' error, it means the DC component in the grid current exceeds the upper threshold. The inverter monitors its external working conditions in real time and will automatically recover after the fault is rectified. If the alarm occurs frequently, contact your dealer or Huawei technical support.
What causes String Current Backfeed on a Huawei SUN2000-12KTL-M2 Inverter and how to resolve it?
If your Huawei Inverter reports 'String Current Backfeed,' it means that too few PV modules are connected in series, causing the end voltage to be lower than other PV strings. To resolve this: 1. Check if the number of PV modules connected in series is less than that of other PV strings. If so, wait until the PV string current drops below 0.5 A, set the DC SWITCH to OFF, and adjust the number of PV modules. 2. Check if the PV string is shaded. 3. Check if the open-circuit voltage of the PV string is normal.
General| Model | SUN2000-12KTL-M2 |
|---|---|
| Max. Efficiency | 98.6% |
| Max. Input Voltage | 1100 V |
| Start Voltage | 200 V |
| Rated Output Power | 12000 W |
| Output Frequency | 50 Hz / 60 Hz |
| Operating Temperature Range | -25°C to +60°C |
| Cooling Method | Natural Convection |
| Protection Rating | IP65 |
| Max. DC Input Power | 18, 000 W |
| Max. AC Power | 13200 W |
| Rated Output Voltage | 400 V |
| AC Voltage Range | 320 V - 480 V |
| Max. DC Power | 18, 000 W |
Details DANGER warnings for installation, operations, and avoiding electric shock.
Outlines general safety practices for operations, devices, and emergency procedures.
Covers DANGER warnings for connecting cables, operations, and foreign matter entry.
DANGER warning against flammable/explosive gas/smoke and operations in such environments.
WARNING about using professional tools and avoiding drilling into the equipment.
Details basic environmental requirements for installing the SUN2000 indoors or outdoors.
Details steps for wall-mounted installation, including determining positions and securing brackets.
Outlines steps for determining hole positions, drilling, and securing the mounting bracket.
Details DANGER/WARNING/CAUTION notes regarding PV array voltage, fire suppression, and PPE.
Explains precautions for PE cable connection and grounding detection function.
Covers precautions for connecting the AC output power cable and AC switch requirements.
Outlines precautions for connecting DC input power cables, including voltage limits and switch settings.
Details connecting the signal cable to the connector and COM port for inverter cascading.
Shows cable connections between the inverter and DTSU666-H/YDS60-C24 meters.
Details connecting the signal cable for rapid shutdown function, noting optimizer limitations.
Shows cable connections between the inverter and Ripple Control Device.
Details connecting the NS protection signal cable, including grid code settings and switch connections.
Provides an installation checklist with acceptance criteria for SUN2000, Smart Dongle, cables, grounding, and switches.
Advises setting parameters correctly and checking AC voltage before turning on the AC switch.
Details the steps to power on the system, including AC/DC switch operations and LED indicator observation.
Directs users to the Device Commissioning screen for parameter settings and to specific manuals.
Explains Grid-tied Point Control function for limiting output power within deviation limits.
Guides on setting inverter parameters for apparent power control via Settings > Power adjustment.
Explains the AFCI function for arc fault detection and how to clear related alarms.
Explains the IPS check requirement for Italy CEI0-21 and the procedure using Maintenance > IPS test.
Lists DANGER and WARNING prerequisites for performing maintenance, emphasizing safety and powering off.
Details the procedure for powering off the SUN2000 system, including app commands and switch operations.
Advises on performing routine maintenance for long-term operation and provides CAUTION for system shutdown before maintenance.
Provides notes on contacting support, defines alarm severities (Major, Minor, Warning), and possible causes.
Details common alarms, their severity, possible causes, and troubleshooting suggestions.
Lists common alarms like String Current Backfeed, AFCI Failure, and Phase Wire Short-Circuited with troubleshooting.
Covers alarms related to grid status like Grid Loss, Undervoltage, and Overvoltage with troubleshooting steps.
Details alarms for Grid Voltage Imbalance and Grid Overfrequency with troubleshooting suggestions.
Lists alarms for Grid Underfrequency, Unstable Grid Frequency, and Output Overcurrent with troubleshooting.
Covers alarms related to DC component, residual current, and grounding with troubleshooting steps.
Details alarms for Low Insulation Resistance, Cabinet Overtemperature, and Device Fault with troubleshooting.
Lists alarms for upgrade, license, monitoring, and power collector faults with troubleshooting.
Details Transient AC Overvoltage alarm with troubleshooting steps involving grid connection voltage.
Covers Abnormal PV Module Configuration alarm, detailing causes and troubleshooting for optimizers.
Details the maximum and European weighted efficiency, and input specifications like voltage and current.
Covers input voltage ranges, number of input routes/MPP trackers, and output ratings like active power and voltage.
Lists output current, power, harmonic distortion, and protection features like overvoltage and islanding protection.
Details protection features like AC surge, insulation resistance, RCD detection, PID repair, AFCI, and communication ports.
Details efficiency, input (voltage, current), and output (power, voltage, current) specifications for SUN2000-450W-P optimizer.
Guides on connecting to the inverter WLAN, logging in as installer, and network security recommendations.
Details the steps to reset the SUN2000 password, involving AC/DC switch operations and app login.
Details methods to trigger rapid shutdown, including connecting switches, turning off AC/DC switches, and AFCI activation.
Explains causes of low insulation resistance and fault location steps using the FusionSolar App.
Details steps for locating faults, including checking alarms, PV string connections, and potential short-circuit positions.
Continues fault location steps, involving disconnecting PV modules/optimizers and checking for damage.
Completes fault location by determining position, checking optimizer/module faults, and replacing faulty components.
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