What causes String Reverse Connection on Huawei SUN2000-20KTL-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 SUN2000-20KTL-M2 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 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 SUN2000-20KTL-M2?
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 Inverter 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 SUN2000-20KTL-M2 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.
What does Grid Overvoltage mean on my Huawei SUN2000-20KTL-M2 Inverter and how can I fix it?
If your Huawei SUN2000 Inverter is showing a 'Grid Overvoltage' error, it means the power grid voltage is beyond the upper threshold or the overvoltage duration exceeds the value specified by HVRT. Here's what you can do: 1. If the alarm occurs occasionally, the power grid may be temporarily abnormal. The SUN2000 automatically recovers after detecting that the power grid becomes normal. 2. If the alarm occurs frequently, check whether the grid voltage is within the acceptable range. If not, contact the local power operator. If yes, log in to the mobile phone app, SmartLogger, or NMS to modify the grid overvoltage protection threshold with the consent of the local power operator. 3. Check whether the peak voltage of the power grid is too high. If the fault persists and cannot be rectifi...
What causes String Current Backfeed on a Huawei SUN2000-20KTL-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.
Describes the SUN2000 inverter, its installation, electrical connections, commissioning, maintenance, and troubleshooting.
Lists the target readers for this document, including installers and users.
Explains the meaning of symbols used throughout the document for safety and information.
Safety guidelines for personal protection during operations, including precautions against electric shock.
Safety guidelines related to electrical hazards, grounding, and cable connections.
Guidelines for selecting and maintaining a safe operating environment for the equipment.
Safety precautions for physical handling, mounting, and moving of the equipment.
Procedures and precautions for safely moving heavy equipment to prevent injury.
Guidelines for safe use of ladders during work at heights.
Safety procedures for hoisting operations and drilling holes.
Introduces the SUN2000 inverter and its function in converting DC power to AC power.
Describes typical grid-tied system configurations and components.
Details the physical components, ports, and indicators of the SUN2000 inverter.
Explains various labels, symbols, and warnings found on the equipment.
Describes symbols and their meanings found on the equipment enclosure.
Details the information provided on the product nameplate.
Explains the operational principles and conceptual diagram of the SUN2000.
Illustrates the conceptual circuit diagram of the SUN2000.
Describes the different operating modes of the SUN2000: Standby, Operating, and Shutdown.
Procedures for checking outer packing materials and inverter model before installation.
Lists the tools required for installation, categorized by type.
Guidelines for selecting the optimal installation location for the inverter.
Specifies environmental conditions for safe and optimal installation.
Details the necessary space around the unit for installation and heat dissipation.
Provides instructions for safely moving the inverter during installation.
Instructions for installing the mounting bracket for the inverter.
Step-by-step guide for wall-mounting the inverter bracket.
Step-by-step guide for installing the mounting bracket on supports.
General safety precautions before making electrical connections.
Steps to prepare for electrical connections, including cable selection.
Instructions for properly connecting the protective earth (PE) cable.
Detailed steps for connecting the AC output power cable.
Instructions for safely connecting the DC input power cables.
Steps for installing the Smart Dongle for communication.
Information on connecting various signal cables.
Guide for connecting RS485 cables for inverter cascading.
Guide for connecting RS485 cables to a Smart Power Sensor.
Checklist for verifying installation before powering on the system.
Step-by-step procedure for powering on the SUN2000 system.
Instructions for commissioning the system using the mobile app.
Guide to configuring various operational parameters of the SUN2000.
Configuration for controlling the energy output of the PV system.
Explanation and configuration of the Arc Fault Circuit Interrupter function.
Procedure for performing an IPS test for specific grid codes.
Details on setting up the SmartLogger for network communication.
Instructions for safely powering off the system for maintenance.
Guidelines for performing regular maintenance tasks.
Guidance for diagnosing and resolving common issues and alarms.
Steps for safely removing the inverter from its mounting.
Guidelines for packing the SUN2000 for transport or storage.
Instructions for proper disposal of the equipment at its end of life.
Detailed technical specifications for the SUN2000 models.
Technical specifications for compatible PV optimizers.
Lists supported national and regional grid codes for the SUN2000.
Procedure for changing or resetting the WLAN password.
General| Model | SUN2000-20KTL-M2 |
|---|---|
| Type | String Inverter |
| Max. efficiency | 98.6% |
| European efficiency | 98.3% |
| Max. input voltage | 1100 V |
| Max. input current per MPPT | 26 A |
| Number of MPPTs | 2 |
| Rated output power | 20, 000 W |
| Start Voltage | 200 V |
| MPPT Voltage Range | 200 V - 1000 V |
| Max. AC Power | 22, 000 VA |
| Output Frequency | 50 Hz / 60 Hz |
| Dimensions (W x H x D) | 525 x 470 x 262 mm |
| Weight | 25 kg |
| Operating Temperature Range | -25°C to +60°C |
| Cooling Method | Natural Convection |
| Protection Degree | IP65 |
| Rated AC Voltage | 230 V / 400 V |
| Max. Input Power | 30, 000 W |
| Max. Output Power | 22, 000 W |
| Rated Output Voltage | 230 V / 400 V |
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