Huawei SUN2000-12KTL - User Manual

Other manuals for Huawei SUN2000-12KTL

Quick Guide30 pages

Quick Installation Guide12 pages

Questions and Answers

J
jennifershawSep 13, 2025
How to troubleshoot Low Array Insulation Resistance on a Huawei Inverter?
- E
  elaine92Sep 13, 2025
  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.
M
Mike JonesSep 12, 2025
What causes Invert Module Fault in Huawei SUN2000-12KTL?
- H
  hbaileySep 12, 2025
  If your Huawei Inverter displays 'Invert Module Fault', it indicates a protection activation for the inversion circuit inside the SUN2000 due to abnormal external conditions. The SUN2000 detects its external working conditions in real time, and therefore the SUN2000 automatically recovers to the normal operating status after the fault is rectified. If the Reason ID is 20, check whether the inverter output cable is short-circuit.
D
Danielle PrattSep 12, 2025
What to do if Huawei SUN2000-12KTL Inverter shows System Fault?
- J
  Jason JensenSep 12, 2025
  If your Huawei SUN2000 Inverter reports a 'System Fault', it indicates an unrecoverable fault within the inverter's internal circuitry. To attempt a fix, flip the DC switch on the SUN2000 to the OFF position, wait for 5 minutes, and then flip the DC switch back to the ON position. Check if the fault clears.
T
taylorlawrenceSep 12, 2025
Why does my Huawei SUN2000-12KTL show Frequency Abnormal?
- L
  Lori DavisSep 12, 2025
  If your Huawei Inverter displays a 'Frequency Abnormal' error, it means that the actual frequency of the grid is higher than the local grid standards requirements. If this occurs accidentally, the SUN2000 will automatically recover to normal operation once the grid stabilizes. However, if the alarm repeats, verify that the grid frequency is within the acceptable range. If it is not, contact your local power operator. If the frequency is within range, you may need to change the power grid overfrequency and underfrequency protection points after obtaining approval from the local power operator.
K
Keith KnightSep 9, 2025
What to do if Huawei Inverter shows Grid Voltage Abnormal?
- J
  jean38Sep 9, 2025
  If your Huawei Inverter shows a 'Grid Voltage Abnormal' error, it indicates that the voltage of the power grid is beyond the acceptable range. If this occurs accidentally, the SUN2000 will automatically recover to normal operation once the grid stabilizes. However, if the alarm repeats, verify that the grid voltage is within the acceptable range. If it is not, contact your local power operator. If the voltage is within range, you may need to change the power grid overvoltage and undervoltage protection points after getting approval from the local power operator.
F
Frances ThompsonSep 8, 2025
Why is my Huawei SUN2000-12KTL Inverter showing Cabinet Overtemperature?
- A
  awareSep 8, 2025
  If your Huawei SUN2000 Inverter is showing a Cabinet Overtemperature warning, check the ventilation and ambient temperature around the installation location. If ventilation is poor or the temperature is too high, improve the ventilation and heat dissipation.
M
mcantuAug 23, 2025
How to fix DC Over Voltage error on Huawei SUN2000-12KTL Inverter?
- J
  Jeffery TuckerAug 23, 2025
  The Huawei Inverter might show a DC Over Voltage error if too many PV modules are connected in series. This makes the PV string's open-circuit voltage higher than the inverter's maximum operating voltage. To fix this, reduce the number of PV modules connected in series until the PV string output voltage is within the specified range for the Huawei Inverter. After adjusting, the inverter should work correctly.
A
Antonio WatsonSep 7, 2025
How to troubleshoot 'String 1-6 Reverse' on Huawei SUN2000-12KTL Inverter?
- G
  Gregory BurnsSep 7, 2025
  If your Huawei Inverter SUN2000 reports 'String 1-6 Reverse', first check if the PV string is connected in reverse. If it is, wait until night when solar irradiance is low and the PV string voltage drops below 60V DC. Then, set the DC SWITCH to OFF and correct the PV string connection. Also, check if the number of PV modules connected in series is too small. If so, increase the number of PV modules connected in series to the SUN2000.
E
elizabeth45Sep 6, 2025
What to do if Huawei Inverter reports Abnormal Invert Circuit?
- D
  Danielle HendersonSep 6, 2025
  If your Huawei SUN2000 Inverter displays an Abnormal Invert Circuit error, it could be due to several reasons. If the cause ID is 13, 14, or 16, the SUN2000 monitors its external working conditions in real time and automatically reverts to normal operating status after the fault is rectified. If the Reason ID is 20, check whether the SUN2000 output cables are short-circuited and rectify any fault.
D
Derek ReidSep 5, 2025
Why does my Huawei Inverter show Abnormal Grid Voltage?
- M
  Margaret LopezSep 5, 2025
  If your Huawei Inverter is showing an Abnormal Grid Voltage error, it could be due to a couple of reasons. If the alarm seems to be a one-time occurrence (Cause ID = 4), it might be due to a temporary issue with the power grid, and the SUN2000 should automatically return to normal operation once the grid stabilizes. However, if the grid-tied point voltage is consistently too high (Cause ID = 16/19/26), you should contact your local power operator to investigate the grid conditions.

Huawei SUN2000-12KTL Specifications

General

Max. Efficiency	98.6%
Rated AC Power Output	12, 000 W
Dimensions (W x H x D)	525 x 470 x 262 mm
Weight	25 kg
Operating Temperature Range	-25°C to +60°C
Protection Rating	IP65
Max. Input Voltage	1100 V
Number of MPPT Trackers	2
Max. Input Current per MPPT	22 A
Cooling Method	Natural Convection
Max. apparent AC power	12000 VA
MPPT Voltage Range	200 V to 1, 000 V
Rated AC Voltage	220 V / 380 V, 230 V / 400 V, 240 V / 415 V
Warranty	5 years

Summary

About This Document

Purpose

Outlines the document's scope for SUN2000 installation, operation, and maintenance.

Intended Audience

Specifies target readers as PV plant operators and qualified electrical personnel.

Symbol Conventions

Defines symbols used in the manual for safety and operational clarity.

Change History

Safety Precautions

Personnel Requirements

States that only qualified technicians should operate the SUN2000.

Label Protection

Warns against tampering with warning signs and nameplates on the unit.

Installation Safety

Details precautions for safe installation, including clearance and disconnection.

Electrical Connection Safety

Covers safety during electrical connections, including grounding and isolation.

Operation Safety

Emphasizes safety during operation, especially regarding high voltage and hot surfaces.

Maintenance and Replacement Safety

Outlines safety measures before and during maintenance tasks.

Overview

Introduction

Introduces the SUN2000, its functions, models, and applications.

Network Application

Describes the SUN2000's role in grid-tied PV power systems.

Power Grid Modes

Explains the different power grid modes supported by the SUN2000.

Appearance and Dimensions

Details the physical appearance and external dimensions of the SUN2000.

Bottom View and Ports

Identifies and describes the ports on the bottom of the SUN2000.

Label Conventions

Explains the meaning of symbols and labels on the SUN2000 and its nameplate.

Nameplate Details

Describes the information found on the SUN2000 nameplate.

Monitoring Panel Overview

Introduces the monitoring panel, including LCD, indicators, and buttons.

LCD Display

Explains the content and functionality of the LCD screen.

Indicators

Describes the status indicated by the SUN2000's LED indicators.

Buttons

Details the function of each button on the monitoring panel.

Working Principles

Explains the internal circuit diagrams and operational modes of the SUN2000.

SUN2000 Storage

Installation

Context and Pre-installation Checks

Provides context and initial checks before starting the installation process.

Product and Accessories Check

Guides on verifying delivered components after unpacking.

Required Tools

Lists the necessary tools for installation and cable connections.

Determining Installation Position

Specifies requirements for selecting an appropriate installation location.

Support-mounting Procedure

Details the steps for mounting the SUN2000 using a support bracket.

Wall-mounting Procedure

Outlines the steps for securely mounting the SUN2000 onto a wall.

Electrical Connections

Connecting PGND Cables

Explains how to connect the protection ground (PGND) cable for safety.

Connecting AC Output Power Cables

Guides on connecting the AC output power cables to the grid.

Connecting DC Input Power Cables

Details how to connect DC input power cables from PV strings.

Communications Cables

Covers connecting USB and RS485 communication cables.

System Operation

Checking Before Power-On

Lists checks required to ensure proper SUN2000 operation before powering up.

Powering On the SUN2000

Describes the procedure for powering on the SUN2000.

Setting Initialization Parameters

Guides on setting essential parameters like language, time, and grid code.

Man-Machine Interaction

Monitoring Menu Hierarchy

Shows the structure of the monitoring menus accessible via the LCD.

Monitoring Operations

Explains how to view system status and data on the monitoring panel.

Viewing System Operating Information

Details how to access daily, monthly, yearly, and historical energy data.

Viewing Alarm Records

Guides on accessing and managing active and historical alarm records.

Setting System Time

Explains how to configure the system's date and time settings.

Setting System Language

Details the process for changing the display language of the monitoring panel.

Setting the Contrast

Describes how to adjust the LCD contrast for better visibility.

Setting Currency and Currency Factor

Guides on setting currency and the rate for revenue calculation.

Changing a User Password

Explains how to change user passwords for system security.

Setting Communications Parameters

Covers configuring RS485 parameters like address, protocol, and baud rate.

Setting Protection Parameters

Details how to configure protection parameters for the SUN2000.

Setting Feature Parameters

Explains how to set various functional parameters like LVRT and power limit.

Setting Isolation Parameters

Guides on configuring isolation parameters for grounded PV strings.

Manually Starting and Shutting Down

Describes how to manually start and stop the SUN2000 via the panel.

Restoring Factory Settings

Explains how to reset all configured parameters to their factory defaults.

Enabling USB Guide Functions

Details how to enable USB functions for firmware upgrades and data export.

Cleaning User Data

Guides on clearing energy yield data and historical alarms.

Resetting Alarms

Explains how to clear active and historical alarm records.

Resetting the System

Describes the procedure to reset the entire system, causing a shutdown and restart.

Viewing System Version

Guides on how to check the SUN2000's model, firmware version, and SN.

Maintenance

Powering Off the SUN2000

Provides safety procedures for powering down the SUN2000 for maintenance.

Routine Maintenance

Outlines regular checks and cleaning for optimal SUN2000 performance.

Troubleshooting

Lists common faults, their causes, and measures to rectify them.

SUN2000 Handling

SUN2000 Removal

Details the steps for safely removing the SUN2000 from its installation.

SUN2000 Packing

Guides on how to pack the SUN2000 for transport or storage.

Disposing the SUN2000

Provides guidance on the proper disposal of the SUN2000 unit.

Technical Specifications

Efficiency

Lists the maximum and European efficiency ratings for different models.

Input Specifications

Details input voltage, current, power, and MPPT parameters.

Output Specifications

Lists rated active power, apparent power, voltage, current, and THD.

Protection Features

Summarizes the protection mechanisms implemented in the SUN2000.

Display and Communication

Covers display types and communication interfaces like RS485.

General Data

Provides physical dimensions, weight, operating environment, and terminal details.

Acronyms and Abbreviations

Power Grid Codes

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