What does Output DC Component Overhigh mean on Huawei SUN 2000?
If your Huawei Inverter displays 'Output DC Component Overhigh', it means the DC component of the inverter's output current is too high. The inverter should detect and attempt to correct this automatically. If the alarm occurs frequently, contact your dealer or Huawei technical support for assistance.
What to do if my Huawei Inverter reports a Grid Loss?
If the Huawei Inverter displays a 'Grid Loss' error, it means there's likely a problem with the power grid. The cause may be a power outage, a disconnected AC circuit, or a disabled AC switch. To troubleshoot, first, check the AC voltage. Then, verify that the AC circuit is properly connected and the AC switch is turned on.
Why is my Huawei SUN 2000 showing a Grid Overvoltage error?
A 'Grid Overvoltage' error on your Huawei Inverter indicates that the grid voltage is too high. This could be because the voltage exceeds the upper threshold or has remained high for longer than the permitted duration. First, verify if the grid connection voltage is within the acceptable range. If it's consistently too high, contact your local power operator. If you have permission from the power operator, you can adjust the overvoltage protection threshold. Also, check for peak grid voltage exceeding limits.
What does Grid Undervoltage mean on a Huawei Inverter?
If your Huawei Inverter shows a 'Grid Undervoltage' alarm, it means the grid voltage is too low. This can happen if the voltage falls below the lower threshold, or if low voltage persists longer than specified. If the alarm is occasional, it might be a temporary grid issue, and the inverter should recover automatically. If it happens frequently, check if the grid voltage is within the normal range and contact your local power operator if it's not. If the voltage is normal, you might need to adjust the grid undervoltage protection threshold via the SmartLogger or NMS, with the power operator's consent. Also, check the connection between the AC switch and the output power cable if the problem continues.
How to fix High String Input Voltage on Huawei Inverter?
If your Huawei Inverter is showing 'High String Input Voltage', it means the PV array configuration is incorrect. Too many PV modules are connected in series, causing the open-circuit voltage to exceed the inverter's maximum input voltage. To fix this, you should reduce the number of PV modules connected in series until the PV string's open-circuit voltage is within the acceptable range. After correcting the PV array configuration, the alarm should disappear.
What causes Output Overcurrent in Huawei SUN 2000?
If the Huawei Inverter displays 'Output Overcurrent', it's likely due to a sudden drop in grid voltage or a short circuit, causing the inverter's output current to exceed the limit. The inverter will try to correct this automatically. If the alarm occurs frequently, check for a short circuit in the output. If the problem persists, contact your dealer or Huawei technical support.
What does Active Islanding mean on my Huawei SUN 2000?
If the Huawei Inverter is showing 'Active Islanding', it means the inverter has proactively detected islanding, which occurs when the power grid experiences an AC power outage. Verify that the grid connection voltage of the solar inverter is normal.
What does Passive Islanding mean on my Huawei Inverter?
If the Huawei Inverter is showing 'Passive Islanding', it means the inverter has passively detected an island grid, which occurs when the power grid experiences an AC power outage. Verify that the grid connection voltage of the solar inverter is normal.
How to troubleshoot Low Insulation Resistance on Huawei SUN 2000?
If your Huawei Inverter is showing 'Low Insulation Resistance', it indicates a short circuit between the PV array and the ground, or poor insulation due to damp conditions. Check the output impedance of the PV array to ground for shorts or insulation issues and fix them. Ensure the PE cable of the inverter is correctly connected. If the low impedance is due to cloudy or rainy weather, you can adjust the insulation resistance protection settings via the app, SmartLogger, or NMS.
What does Abnormal Residual Current mean on my Huawei SUN 2000 Inverter?
If your Huawei Inverter displays 'Abnormal Residual Current', it suggests that the insulation impedance on the input side to PE has decreased during operation. If the alarm occurs occasionally, it might be a temporary issue in the external circuit, and the inverter should recover automatically. However, if it happens frequently or persists, check if the impedance between the PV string and the ground is too low.
Describes the document's scope and objective.
Identifies the target readers for this manual.
Explains the meaning of various safety symbols used.
Details the changes introduced in the current document issue.
Lists modifications made in the previous document version.
Notes the initial release for first office application.
Covers fundamental safety precautions and general requirements for operation.
Specifies the necessary qualifications and training for personnel.
Details critical safety measures for grounding and power connections.
Outlines the conditions for a safe and effective installation environment.
Addresses safety procedures related to physical handling and tools.
Notes on initial parameter setup for safe operation.
Safety guidelines for performing maintenance and replacing components.
Provides a general introduction to the solar inverter's function and purpose.
Describes the physical design, components, and indicators of the inverter.
Explains the meaning and importance of various labels on the device.
Details the operational schematic and working modes of the inverter.
Specifies the conditions and procedures for storing the solar inverter.
Procedures for verifying packaging and contents before installation.
Lists all necessary tools, instruments, and personal protective equipment.
Covers basic requirements and considerations for selecting the installation site.
Step-by-step guide for securely mounting the bracket.
Instructions for physically attaching the solar inverter to the mounting bracket.
General safety warnings and guidelines before making electrical connections.
Details the types, specifications, and preparation of necessary cables.
Instructions for establishing the protective earth (PE) connection.
Procedure for connecting the AC power output cable.
Steps for connecting the DC input power cables from PV strings.
Guide for connecting communication cables for monitoring and control.
A checklist of items to verify before initial system power-up.
Step-by-step instructions for starting the solar inverter system.
Procedure for safely shutting down the solar inverter system.
Outlines the schedule and methods for regular system upkeep.
Provides solutions for common alarms and system issues.
Steps for safely uninstalling the inverter from its mounting.
Instructions on how to properly pack the inverter for transport or storage.
Guidelines for environmentally responsible disposal of the equipment.
Details the efficiency ratings of the solar inverter.
Specifies the electrical input parameters and ranges.
Details the electrical output parameters and ratings.
Lists the various protection mechanisms integrated into the inverter.
Describes the communication interfaces and capabilities.
Summarizes general physical and environmental specifications.
Lists and describes the grid codes supported by the inverter.
Identifies parameters requiring manual reset after factory default restoration.
Provides a glossary of technical terms and abbreviations used in the manual.
General| Type | String Inverter |
|---|---|
| Topology | Transformerless |
| Cooling Method | Natural convection |
| Rated Output Power | 3-10 kW |
| MPPT | 2 |
| Communication | RS485 |
| Output Power | 3-10 kW |
| Output Voltage | 230 V |
| Output Frequency | 50 Hz / 60 Hz |
| MPPT Trackers | 2 |
| Operating Temperature | -25 °C ~ +60 °C |
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