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SUN2000-(100KTL, 110KTL, 125KTL) Series User Manual

This document describes the SUN2000-125KTL-M0,SUN2000-110KTL-M0,SUN2000-100KTL-M0,SUN2000-100KTL-M1 and SUN2000-100KTL-INM0 in terms of its installation, electrical connections, commissioning, maintenance, and troubleshooting. BOM number: 01074693, 01074694, 01074695, 01074695-001 and 01074695-002.
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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Safety Precautions

Safety Precautions

General Safety

Before performing any operation, read the precautions and instructions in this manual and strictly follow the precautions and special safety instructions provided by Huawei to avoid accidents.

The installation, operation, and maintenance of the equipment must comply with local laws and regulations. The NOTICE, WARNING, and DANGER items in this document do not cover all the safety cautions and are only supplementary to the laws and regulations. Huawei assumes no responsibility for violation of general safety operation requirements or design, production, and equipment safety standards.

Ensure that the equipment is used in environments that meet its design specifications. Otherwise, the equipment may become faulty, and the resulting equipment malfunction, component damage, personal injuries, or property damage are not covered under the warranty.


Huawei will not be liable for any consequences of the following circumstances:

  • Damage during the transportation by the customer
  • Storage conditions that do not meet the requirements specified in this document
  • Installation or use in environments which are not specified in related international standards
  • Failure to follow the operation instructions and safety precautions in this document
  • Operation of the product beyond specified parameter ranges
  • Unauthorized modifications to the product or software code or removal of the product
  • Device damage due to abnormal natural factors (force majeure, such as earthquake, fire, and storm)

Personnel Requirements

Only qualified and trained electrical technicians are allowed to operate the device. Operators need to meet the following requirements.

  • Be properly trained.
  • Read through this manual and master related safety precautions.
  • Get familiar with the safety specifications about the electrical system.
  • Understand the components and functioning of a grid-tied PV power system and relevant local standards.

Personal Safety

  • Wear personal protective equipment, including but not limited to safety shoes, protective goggles, and safety gloves.
  • Before using a device, remove any conductors such as jewelry or watches to avoid electric shock or burns.
  • Use tools in correct methods to avoid hurting people or damaging devices.
  • If there is a probability of personal injury or equipment damage during the operation of the device, immediately stop operations on the equipment, report the case to the project owner, and take feasible protective measures.
  • In the case of a fire, immediately leave the building or the equipment area, and turn on the fire alarm bell or make an emergency call. Do not enter the building on fire in any case.

Protection Label

Do not scrawl, damage, or block any warning label on the device.

System Installation

Never work with power-on during installation.

  • Ensure that the devices are not connected to a power supply or powered on before finishing installation.
  • Do not install the device under bad weather conditions such as thunderstorms, raining, snowing, or strong winds.
  • Ensure that the device is installed in a well ventilated environment.
  • Ensure that the heat dissipation system of the device is not blocked.
  • Do not open the host panel of the device.
  • Tighten the screws using tools when installing the device.
  • After installation, remove the packing materials from the equipment area.


  • When installing the device, always make the ground connection first and disconnect it in the end.
  • Do not damage the ground conductor.
  • Do not operate the device in the absence of a properly installed ground conductor.
  • The device must be connected permanently to the protective ground. Before operating the device, check the electrical connection of it to ensure that it is securely grounded.

Electrical Connections

Before connecting cables, ensure that the device is not damaged. Otherwise, electric shocks or fire may occur.

  • Ensure that all electrical connections comply with local electrical standards.
  • Obtain approval from the country or local utility company before using the inverter in grid-tied mode.
  • Ensure that the cables used in a grid-tied PV power system are properly connected and insulated and meet specifications.
  • Before connecting a power cable, check that the label on the power cable is correct.
  • Before making electrical connections, switch off the disconnector on the upstream device to cut the power supply if people may contact energized components.
  • When routing cables, ensure that a sufficient distance exists between the cables and heat emitting equipment to prevent damage to the insulation layers of cables.
  • Signal cables and power cables should be bound separately.
  • Ensure that the cables you prepared meet local regulations.


High voltage generated by the device during operation may cause an electric shock, which could result in death, serious injury, or serious property damage. Perform operations in strict accordance with safety precautions specified in this document and other relevant documents.

  • Do not disconnect DC or AC power cables when the device is running.
  • Do not touch an energized device, as the enclosure is hot.
  • When the device is running, ensure that the heat dissipation system is not blocked to prevent high temperature alarms and fire from damaging the device.


When the device is powered on for the first time, professional personnel is required to set parameters correctly. Incorrect settings may result in inconsistency between the device and the certification of the country or region where the device is located, affecting the normal operation of the device.

Maintenance and Replacement

High voltage generated by the device during operation may cause an electric shock, which could result in death, serious injury, or serious property damage. Prior to maintenance, power off the devices and strictly comply with the safety precautions in this document and associated documents to operate the devices.

  • Only qualified professionals are allowed to remove safety facilities and inspect the device.
  • Only personnel certified or authorized by Huawei are allowed to replace the device or components (including software).
  • Any fault or error that might cause safety problems must be reported immediately to a supervisor.
  • Maintain the device after you get familiar with this document and prepare the tools and testing equipment.
  • Before maintaining the device, power it off and follow the instructions on the delayed discharge label to ensure that the device is powered off.
  • The device has multiple inputs. Switch off all inputs before maintenance.
  • Temporary warning signs or fences must be placed to prevent unauthorized person from entering the site.
  • If the device is faulty, contact your dealer.
  • The device can be powered on only after all faults are rectified. Failing to do so may escalate faults or damage the device.
Updated: 2019-08-14

Document ID: EDOC1100087908

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