Huawei SUN2000 Series

Other manuals for Huawei SUN2000 Series

Quick Guide23 pages

Quick Installation Guide12 pages

Questions and Answers

D
Donald CarrollSep 12, 2025
What does 'Output DC component overhigh' mean on Huawei Inverter?
- S
  Susan ReevesSep 12, 2025
  An 'Output DC component overhigh' alarm on your Huawei Inverter means the DC component of the inverter output current exceeds the upper threshold. The inverter monitors its external operating conditions in real time and automatically recovers after the fault is rectified. If the alarm persists and affects the energy yield of the PV plant, contact your dealer or Huawei technical support.
C
Christina LopezSep 10, 2025
How to deal with 'Low insulation resistance' error on Huawei Inverter?
- M
  Melissa MorrisSep 12, 2025
  If your Huawei Inverter is showing a 'Low insulation resistance' error, it could be due to: ? The PV array being short-circuited with PE. ? The PV string being in a moist environment for a long time, and the circuit not being well insulated to ground. To address this: ? Check the impedance between the PV string and the PE cable. If a short circuit occurs, rectify the fault. ? Check whether the PE cable of the inverter is correctly connected. ? If you've confirmed that the impedance is lower than the specified protection threshold in a cloudy or rainy environment, log in to the app, SmartLogger, or NMS and set the Insulation resistance protection threshold.
T
Tammy SanchezAug 29, 2025
What to do if Huawei SUN2000 shows device fault?
- M
  melissa85Aug 29, 2025
  If your Huawei Inverter displays a device fault, it indicates an unrecoverable fault within the inverter. Turn off the AC output switch and DC input switch, wait 5 minutes, then turn them back on. If the alarm persists, contact your dealer or Huawei technical support. Ensure the PV string current is less than 1 A when performing these steps.
R
Rachel PageAug 29, 2025
What does abnormal residual current mean on a Huawei Inverter?
- T
  Tara HallAug 29, 2025
  An abnormal residual current on your Huawei Inverter indicates that the insulation impedance on the input side to PE has decreased during operation. If the alarm occurs accidentally, the external power cable may be temporarily abnormal, and the inverter will recover automatically after the fault is rectified. If the alarm persists or lasts a long time, check whether the impedance between the PV string and ground is too low.
K
kevinbennettAug 29, 2025
Why am I getting an output DC component overhigh error on my Huawei Inverter?
- J
  Jessica VillaAug 29, 2025
  An output DC component overhigh error on your Huawei Inverter means the DC component of the inverter's output current is too high. The inverter will monitor external conditions and try to recover automatically. If the alarm persists and affects energy yield, contact your dealer or Huawei technical support.
N
Nicole ShannonAug 30, 2025
What to do if Huawei SUN2000 Inverter reports abnormal PV module configuration?
- J
  Jeremy VillaAug 30, 2025
  An abnormal PV module configuration error on your Huawei Inverter means the PV string power or the number of optimizers connected in series in a PV string exceeds the upper threshold. It could also mean the number of optimizers connected in series in a PV string is less than the lower threshold, the PV string output is reversely connected, or the output of some optimizers in the PV string is reversely connected. Check whether the total number of PV modules, number of PV modules in a PV string, and number of PV strings meet requirements and whether the PV module output is reversely connected.
B
Brian NelsonSep 23, 2025
What does Unstable Grid Frequency mean on Huawei SUN2000 Inverter?
- M
  Maria BerrySep 23, 2025
  If your Huawei Inverter shows 'Unstable Grid Frequency,' it means the grid frequency change rate doesn't comply with the local power grid standard. First, if the alarm occurs accidentally, the power grid may be temporarily abnormal, and the inverter will recover automatically. If it happens frequently, check if the grid frequency is within the acceptable range and contact the local power operator if it isn't.
P
pearsonbrandiSep 15, 2025
What to do if Huawei Inverter says String Reversed?
- A
  Amber CaseySep 15, 2025
  If the Huawei Inverter shows a 'String Reversed' error, it means that the PV string is connected with reversed polarity. Wait until night when solar irradiance declines and the PV string current drops below 0.5 A. Then, set the DC SWITCH to the OFF position and correct the string polarity.
K
kylejohnsonSep 12, 2025
What to do if my Huawei SUN2000 shows 'Cabinet overtemperature'?
- J
  jamesperrySep 12, 2025
  If your Huawei Inverter displays a 'Cabinet overtemperature' alarm, it could be due to: ? The inverter being installed in a place with poor ventilation. ? The ambient temperature exceeding the upper threshold. ? The inverter not operating properly. Check the ventilation and ambient temperature at the inverter installation position. If the ventilation is poor or the ambient temperature exceeds the upper threshold, improve the ventilation and heat dissipation. If both the ventilation and ambient temperature meet requirements yet the alarm persists, contact your dealer or Huawei technical support.
D
Deborah Foster DVMSep 17, 2025
How to fix Power grid phase wire short-circu it to PE in Huawei SUN2000?
- K
  Kara BlackburnSep 18, 2025
  If the Huawei Inverter shows 'Power grid phase wire short-circu it to PE', it means the impedance of the output phase wire is low or short-circuited to PE. Check the impedance of the output phase wire to PE, locate the position with lower impedance and restore that.

Summary

Safety Information

General Safety Precautions

General safety statements and precautions for equipment operation.

Personnel Safety Requirements

Outlines qualifications and training required for personnel.

Electrical Safety Guidelines

Grounding requirements and general electrical safety precautions.

Installation Guide

Installation Tools and Equipment

Lists tools and PPE needed for installation.

Determining Installation Position

Guidelines for selecting the optimal installation location.

Mounting Bracket Installation

Process of installing the mounting bracket for the inverter.

Installing the Solar Inverter

Step-by-step guide to safely install the solar inverter.

Electrical Connections

Connection Safety Precautions

Essential safety precautions before making electrical connections.

Connecting DC Input Power Cables

Procedure for connecting DC input power cables.

Connecting AC Output Power Cable

Procedure for connecting the AC output power cable.

Commissioning and Operation

Pre-Power-on Checks

Acceptance criteria to verify before powering on the inverter.

Powering On the SUN2000

Procedure and precautions for powering on the inverter.

SUN2000 App Operations

Using the SUN2000 mobile app for inverter management.

Maintenance and Troubleshooting

Shutdown and Power-Off Procedures

Procedures for safely shutting down and powering off the inverter.

Troubleshooting Common Alarms

Common alarms, causes, and troubleshooting measures.

Fan Replacement Guide

Instructions for replacing a faulty fan unit.

Technical Specifications

Input Electrical Specifications

Lists input voltage, current, and MPPT specifications.

Output Electrical Specifications

Lists output power, voltage, current, and frequency.

Huawei SUN2000 Series Specifications

General

Max Efficiency	98.6%
MPPT Efficiency	99.9%
Protection Rating	IP65
Max. DC Voltage	1100 V
Rated AC Frequency	50 Hz / 60 Hz
Rated Power	3kW - 10kW
Operating Temperature Range	-25 °C ~ +60 °C
Communication	RS485
Rated AC Power	3kW - 10kW
Power Factor Adjustment Range	0.8 leading to 0.8 lagging
Total Harmonic Distortion (THD)	≤ 3%
Protection	DC reverse polarity
Cooling	Natural convection
DC Connection	MC4