HUAWEI 100KTL Solar Inverter User Manual

: June 1, 2024
: Huawei

Table of Contents

HUAWEI 100KTL Solar Inverter
Product Information
Usage Instructions
FAQs
Safety Information
Overview
Solar Inverter Storage
Installation
Electrical Connections
Commissioning
Man-Machine Interactions
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

HUAWEI 100KTL Solar Inverter

HUAWEI-100KTL-Solar-Inverter-PRO

Product Information

The SUN2000-(100KTL, 110KTL, 115KTL)-M2 is a solar inverter designed for installation, electrical connection, commissioning, maintenance, and troubleshooting purposes. It is suitable for photovoltaic (PV) plants and is recommended for use by qualified electricians.

Specifications

Model: SUN2000-(100KTL, 110KTL, 115KTL)-M2
Issue Date: 10 2023-11-20
Manufacturer: Huawei Technologies Co., Ltd.
Website: https://e.huawei.com

Usage Instructions

Installation

Before installing the SUN2000 inverter, carefully read the installation guidelines provided in the user manual. Ensure that the installation location meets the specified requirements for safety and efficiency.

Electrical Connection

Connect the SUN2000 inverter to the electrical system following the detailed electrical connection instructions provided in the manual. Make sure to adhere to all safety precautions during the connection process.

Commissioning

After installation and electrical connection, proceed with commissioning the inverter as per the guidelines outlined in the manual. Follow the step-by-step instructions to ensure proper functionality.

Maintenance

Regular maintenance of the SUN2000 inverter is essential for optimal performance. Refer to the maintenance section of the manual for detailed instructions on how to maintain and service the inverter.

Troubleshooting

If you encounter any issues with the SUN2000 inverter, refer to the troubleshooting guide in the manual. Follow the recommended steps to identify and resolve common problems.

FAQs

Q: Can I install the SUN2000 inverter myself?
- A: It is recommended that installation be carried out by qualified electricians to ensure safety and proper functionality.
Q: How often should I perform maintenance on the inverter?
- A: Regular maintenance should be performed as per the guidelines provided in the manual, typically at least once a year or as needed based on operating conditions.

SUN2000-(100KTL, 110KTL, 115KTL)-M2
User Manual

Issue Date

10 2023-11-20

HUAWEI TECHNOLOGIES CO., LTD.

Copyright © Huawei Technologies Co., Ltd. 2023. All rights reserved. No part of this document may be reproduced or transmitted in any form or by any means without prior written consent of Huawei Technologies Co., Ltd.
Trademarks and Permissions
and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd. All other trademarks and trade names mentioned in this document are the property of their respective holders.
Notice The purchased products, services and features are stipulated by the contract made between Huawei and the customer. All or part of the products, services and features described in this document may not be within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information, and recommendations in this document are provided “AS IS” without warranties, guarantees or representations of any kind, either express or implied.
The information in this document is subject to change without notice. Every effort has been made in the preparation of this document to ensure accuracy of the contents, but all statements, information, and recommendations in this document do not constitute a warranty of any kind, express or implied.

Huawei Technologies Co., Ltd.

Address:

Huawei Industrial Base Bantian, Longgang Shenzhen 518129 People’s Republic of China

Website:

https://e.huawei.com

Issue 10 (2023-11-20)

i

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

About This Document

Overview
This document describes the SUN2000-115KTL-M2, SUN2000-110KTL-M2, and SUN2000-100KTL-M2 (also referred to as SUN2000) in terms of installation, electrical connection, commissioning, maintenance, and troubleshooting. Before installing and operating the solar inverter, ensure that you are familiar with the features, functions, and safety precautions provided in this document.

Intended Audience
This document is intended for photovoltaic (PV) plant operating personnel and qualified electricians.

Symbol Conventions

The symbols that may be found in this document are defined as follows.

Symbol

Description
Indicates a hazard with a high level of risk which, if not avoided, will result in death or serious injury.
Indicates a hazard with a medium level of risk which, if not avoided, could result in death or serious injury.
Indicates a hazard with a low level of risk which, if not avoided, could result in minor or moderate injury.
Indicates a potentially hazardous situation which, if not avoided, could result in equipment damage, data loss, performance deterioration, or unanticipated results. NOTICE is used to address practices not related to personal injury.
Supplements the important information in the main text. NOTE is used to address information not related to personal injury, equipment damage, and environment deterioration.

Issue 10 (2023-11-20)

ii

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

About This Document

Change History
Changes between document issues are cumulative. The latest document issue contains all the changes made in earlier issues.

Issue 10 (2023-11-20)
Updated 10 Technical Specifications.

Issue 09 (2023-10-10)
Updated 5.7.1 Cable Connection Description.

Issue 08 (2023-07-20)
Updated A Grid Codes.

Issue 07 (2023-04-30)
Updated 4.2 Tools. Updated 5.7 Connecting DC Input Power Cables. Updated 5.9 (Optional) Installing a Smart Dongle. Updated 10 Technical Specifications.

Issue 06 (2023-03-13)
Updated 5.2 Preparing Cables. Updated 5.7 Connecting DC Input Power Cables.

Issue 05 (2023-01-31)
Updated 4.2 Tools. Updated 5.7 Connecting DC Input Power Cables.

Issue 04 (2023-01-10)
Updated 1 Safety Information. Updated 4.5 Installing a Solar Inverter. Updated 5.6 Connecting an AC Output Power Cable. Updated 5.7 Connecting DC Input Power Cables. Updated 6.2 Powering On the SUN2000. Updated 7.1.2 Downloading and Installing the App.

Issue 10 (2023-11-20)

iii

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

About This Document

Updated 8 Maintenance. Updated 10 Technical Specifications.

Issue 03 (2022-09-30)
Deleted the SUN2000-100KTL-INM2 model. Updated 5.2 Preparing Cables. Updated 5.6 Connecting an AC Output Power Cable. Updated 7.1.1 App Introduction. Updated 7.1.2 Downloading and Installing the App. Updated 5.9 (Optional) Installing a Smart Dongle. Updated 8.4 Troubleshooting. Updated 10 Technical Specifications. Added D Contact Information.

Issue 02 (2022-06-30)
Added sections about setting app parameters and resetting password, changed insulated tools, and updated power-off for troubleshooting and technical specifications.
Updated 4.2 Tools.
Added 7.1.4 Setting Parameters.
Updated 8.2 Power-Off for Troubleshooting.
Updated 10 Technical Specifications.
Added B Resetting Password.

Issue 01 (2022-05-20)
This issue is used for first office application (FOA).

Issue 10 (2023-11-20)

iv

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

Safety Information

1 Safety Information

Statement

Before transporting, storing, installing, operating, using, and/or maintaining the equipment, read this document, strictly follow the instructions provided herein, and follow all the safety instructions on the equipment and in this document. In this document, “equipment” refers to the products, software, components, spare parts, and/or services related to this document; “the Company” refers to the manufacturer (producer), seller, and/or service provider of the equipment; “you” refers to the entity that transports, stores, installs, operates, uses, and/or maintains the equipment.
The Danger, Warning, Caution, and Notice statements described in this document do not cover all the safety precautions. You also need to comply with relevant international, national, or regional standards and industry practices. The Company shall not be liable for any consequences that may arise due to violations of safety requirements or safety standards concerning the design, production, and usage of the equipment.
The equipment shall be used in an environment that meets the design specifications. Otherwise, the equipment may be faulty, malfunctioning, or damaged, which is not covered under the warranty. The Company shall not be liable for any property loss, personal injury, or even death caused thereby.
Comply with applicable laws, regulations, standards, and specifications during transportation, storage, installation, operation, use, and maintenance.
Do not perform reverse engineering, decompilation, disassembly, adaptation, implantation, or other derivative operations on the equipment software. Do not study the internal implementation logic of the equipment, obtain the source code of the equipment software, violate intellectual property rights, or disclose any of the performance test results of the equipment software.
The Company shall not be liable for any of the following circumstances or their consequences:
The equipment is damaged due to force majeure such as earthquakes, floods, volcanic eruptions, debris flows, lightning strikes, fires, wars, armed conflicts, typhoons, hurricanes, tornadoes, and other extreme weather conditions.
The equipment is operated beyond the conditions specified in this document.

Issue 10 (2023-11-20)

1

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

1 Safety Information

The equipment is installed or used in environments that do not comply with international, national, or regional standards.
The equipment is installed or used by unqualified personnel.
You fail to follow the operation instructions and safety precautions on the product and in the document.
You remove or modify the product or modify the software code without authorization.
You or a third party authorized by you cause the equipment damage during transportation.
The equipment is damaged due to storage conditions that do not meet the requirements specified in the product document.
You fail to prepare materials and tools that comply with local laws, regulations, and related standards.
The equipment is damaged due to your or a third party’s negligence, intentional breach, gross negligence, or improper operations, or other reasons not related to the Company.

1.1 Personal Safety

DANGER
Ensure that power is off during installation. Do not install or remove a cable with power on. Transient contact between the core of the cable and the conductor will generate electric arcs or sparks, which may cause a fire or personal injury.

DANGER
Non-standard and improper operations on the energized equipment may cause fire, electric shocks, or explosion, resulting in property damage, personal injury, or even death.

DANGER
Before operations, remove conductive objects such as watches, bracelets, bangles, rings, and necklaces to prevent electric shocks.

DANGER
During operations, use dedicated insulated tools to prevent electric shocks or short circuits. The dielectric withstanding voltage level must comply with local laws, regulations, standards, and specifications.

Issue 10 (2023-11-20)

2

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

1 Safety Information

WARNING
During operations, wear personal protective equipment such as protective clothing, insulated shoes, goggles, safety helmets, and insulated gloves.

Figure 1-1 Personal protective equipment

General Requirements
Do not stop protective devices. Pay attention to the warnings, cautions, and related precautionary measures in this document and on the equipment.
If there is a likelihood of personal injury or equipment damage during operations, immediately stop, report the case to the supervisor, and take feasible protective measures.
Do not power on the equipment before it is installed or confirmed by professionals.
Do not touch the power supply equipment directly or with conductors such as damp objects. Before touching any conductor surface or terminal, measure the voltage at the contact point to ensure that there is no risk of electric shock.
Do not touch operating equipment because the enclosure is hot.
Do not touch a running fan with your hands, components, screws, tools, or boards. Otherwise, personal injury or equipment damage may occur.
In the case of a fire, immediately leave the building or the equipment area and activate the fire alarm or call emergency services. Do not enter the affected building or equipment area under any circumstances.

Personnel Requirements
Only professionals and trained personnel are allowed to operate the equipment.
Professionals: personnel who are familiar with the working principles and structure of the equipment, trained or experienced in equipment operations and are clear of the sources and degree of various potential hazards in equipment installation, operation, maintenance

Issue 10 (2023-11-20)

3

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

1 Safety Information

Trained personnel: personnel who are trained in technology and safety, have required experience, are aware of possible hazards on themselves in certain operations, and are able to take protective measures to minimize the hazards on themselves and other people
Personnel who plan to install or maintain the equipment must receive adequate training, be able to correctly perform all operations, and understand all necessary safety precautions and local relevant standards.
Only qualified professionals or trained personnel are allowed to install, operate, and maintain the equipment.
Only qualified professionals are allowed to remove safety facilities and inspect the equipment.
Personnel who will perform special tasks such as electrical operations, working at heights, and operations of special equipment must possess the required local qualifications.
Only authorized professionals are allowed to replace the equipment or components (including software).
Only personnel who need to work on the equipment are allowed to access the equipment.

1.2 Electrical Safety

DANGER
Before connecting cables, ensure that the equipment is intact. Otherwise, electric shocks or fire may occur.

DANGER Non-standard and improper operations may result in fire or electric shocks.

DANGER
Prevent foreign matter from entering the equipment during operations. Otherwise, equipment damage, load power derating, power failure, or personal injury may occur.

WARNING
For the equipment that needs to be grounded, install the ground cable first when installing the equipment and remove the ground cable last when removing the equipment.

Issue 10 (2023-11-20)

4

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

1 Safety Information

CAUTION Do not route cables near the air intake or exhaust vents of the equipment.

General Requirements
Follow the procedures described in the document for installation, operation, and maintenance. Do not reconstruct or alter the equipment, add components, or change the installation sequence without permission.
Obtain approval from the national or local electric utility company before connecting the equipment to the grid.
Observe the power plant safety regulations, such as the operation and work ticket mechanisms.
Install temporary fences or warning ropes and hang “No Entry” signs around the operation area to keep unauthorized personnel away from the area.
Before installing or removing power cables, turn off the switches of the equipment and its upstream and downstream switches.
Before performing operations on the equipment, check that all tools meet the requirements and record the tools. After the operations are complete, collect all of the tools to prevent them from being left inside the equipment.
Before installing power cables, check that cable labels are correct and cable terminals are insulated.
When installing the equipment, use a torque tool of a proper measurement range to tighten the screws. When using a wrench to tighten the screws, ensure that the wrench does not tilt and the torque error does not exceed 10% of the specified value.
Ensure that bolts are tightened with a torque tool and marked in red and blue after double-check. Installation personnel mark tightened bolts in blue. Quality inspection personnel confirm that the bolts are tightened and then mark them in red. (The marks must cross the edges of the bolts.)

If the equipment has multiple inputs, disconnect all the inputs before operating the equipment.
Before maintaining a downstream electrical or power distribution device, turn off the output switch on the power supply equipment.
During equipment maintenance, attach “Do not switch on” labels near the upstream and downstream switches or circuit breakers as well as warning signs to prevent accidental connection. The equipment can be powered on only after troubleshooting is complete.
Do not open equipment panels.
Check equipment connections periodically, ensuring that all screws are securely tightened.
Only qualified professionals can replace a damaged cable.
Do not scrawl, damage, or block any labels or nameplates on the equipment. Promptly replace labels that have worn out.

Issue 10 (2023-11-20)

5

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

1 Safety Information

Do not use solvents such as water, alcohol, or oil to clean electrical components inside or outside of the equipment.

Grounding

Ensure that the grounding impedance of the equipment complies with local electrical standards.
Ensure that the equipment is connected permanently to the protective ground. Before operating the equipment, check its electrical connection to ensure that it is reliably grounded.
Do not work on the equipment in the absence of a properly installed ground conductor.
Do not damage the ground conductor.

Cabling Requirements
When selecting, installing, and routing cables, follow local safety regulations and rules.
When routing power cables, ensure that there is no coiling or twisting. Do not join or weld power cables. If necessary, use a longer cable.
Ensure that all cables are properly connected and insulated, and meet specifications.
Ensure that the slots and holes for routing cables are free from sharp edges, and that the positions where cables are routed through pipes or cable holes are equipped with cushion materials to prevent the cables from being damaged by sharp edges or burrs.
Ensure that cables of the same type are bound together neatly and straight and that the cable sheath is intact. When routing cables of different types, ensure that they are away from each other without entanglement and overlapping.
Secure buried cables using cable supports and cable clips. Ensure that the cables in the backfill area are in close contact with the ground to prevent cable deformation or damage during backfilling.
If the external conditions (such as the cable layout or ambient temperature) change, verify the cable usage in accordance with the IEC-60364-5-52 or local laws and regulations. For example, check that the current-carrying capacity meets requirements.
When routing cables, reserve at least 30 mm clearance between the cables and heat-generating components or areas. This prevents deterioration or damage to the cable insulation layer.

1.3 Environment Requirements

DANGER
Do not expose the equipment to flammable or explosive gas or smoke. Do not perform any operation on the equipment in such environments.

Issue 10 (2023-11-20)

6

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

1 Safety Information

DANGER Do not store any flammable or explosive materials in the equipment area.

DANGER
Do not place the equipment near heat sources or fire sources, such as smoke, candles, heaters, or other heating devices. Overheat may damage the equipment or cause a fire.

WARNING
Install the equipment in an area far away from liquids. Do not install it under areas prone to condensation, such as under water pipes and air exhaust vents, or areas prone to water leakage, such as air conditioner vents, ventilation vents, or feeder windows of the equipment room. Ensure that no liquid enters the equipment to prevent faults or short circuits.

WARNING
To prevent damage or fire due to high temperature, ensure that the ventilation vents or heat dissipation systems are not obstructed or covered by other objects while the equipment is running.

General Requirements
Ensure that the equipment is stored in a clean, dry, and well ventilated area with proper temperature and humidity and is protected from dust and condensation.
Keep the installation and operating environments of the equipment within the allowed ranges. Otherwise, its performance and safety will be compromised.
Do not install, use, or operate outdoor equipment and cables (including but not limited to moving equipment, operating equipment and cables, inserting connectors to or removing connectors from signal ports connected to outdoor facilities, working at heights, performing outdoor installation, and opening doors) in harsh weather conditions such as lightning, rain, snow, and level 6 or stronger wind.
Do not install the equipment in an environment with dust, smoke, volatile or corrosive gases, infrared and other radiations, organic solvents, or salty air.
Do not install the equipment in an environment with conductive metal or magnetic dust.
Do not install the equipment in an area conducive to the growth of microorganisms such as fungus or mildew.
Do not install the equipment in an area with strong vibration, noise, or electromagnetic interference.

Issue 10 (2023-11-20)

7

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

1 Safety Information

Ensure that the site complies with local laws, regulations, and related standards.
Ensure that the ground in the installation environment is solid, free from spongy or soft soil, and not prone to subsidence. The site must not be located in a low-lying land prone to water or snow accumulation, and the horizontal level of the site must be above the highest water level of that area in history.
Do not install the equipment in a position that may be submerged in water.
If the inverter is installed in a place with abundant vegetation, in addition to routine weeding, harden the ground underneath the inverter using cement or gravel (the area shall be greater than or equal to 3 m x 2.5 m).
Do not install the equipment outdoors in salt-affected areas because it may be corroded. A salt-affected area refers to the region within 500 m of the coast or prone to sea breeze. Regions prone to sea breeze vary with weather conditions (such as typhoons and monsoons) or terrains (such as dams and hills).
Before installation, operation, and maintenance, clean up any water, ice, snow, or other foreign objects on the top of the equipment.
When installing the equipment, ensure that the installation surface is solid enough to bear the weight of the equipment.
After installing the equipment, remove the packing materials such as cartons, foam, plastics, and cable ties from the equipment area.

1.4 Mechanical Safety

WARNING
Ensure that all necessary tools are ready and inspected by a professional organization. Do not use tools that have signs of scratches or fail to pass the inspection or whose inspection validity period has expired. Ensure that the tools are secure and not overloaded.

WARNING
Do not drill holes into the equipment. Doing so may affect the sealing performance and electromagnetic containment of the equipment and damage components or cables inside. Metal shavings from drilling may short-circuit boards inside the equipment.

General Requirements
Repaint any paint scratches caused during equipment transportation or installation in a timely manner. Equipment with scratches must not be exposed for an extended period of time.
Do not perform operations such as arc welding and cutting on the equipment without evaluation by the Company.

Issue 10 (2023-11-20)

8

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

1 Safety Information

Do not install other devices on the top of the equipment without evaluation by the Company.
When performing operations over the top of the equipment, take measures to protect the equipment against damage.
Use correct tools and operate them in the correct way.

Moving Heavy Objects
Be cautious to prevent injury when moving heavy objects.

If multiple persons need to move a heavy object together, determine the manpower and work division with consideration of height and other conditions to ensure that the weight is equally distributed.
If two persons or more move a heavy object together, ensure that the object is lifted and landed simultaneously and moved at a uniform pace under the supervision of one person.
Wear personal protective gears such as protective gloves and shoes when manually moving the equipment.
To move an object by hand, approach to the object, squat down, and then lift the object gently and stably by the force of the legs instead of your back. Do not lift it suddenly or turn your body around.
Do not quickly lift a heavy object above your waist. Place the object on a workbench that is half-waist high or any other appropriate place, adjust the positions of your palms, and then lift it.
Move a heavy object stably with balanced force at an even and low speed. Put down the object stably and slowly to prevent any collision or drop from scratching the surface of the equipment or damaging the components and cables.
When moving a heavy object, be aware of the workbench, slope, staircase, and slippery places. When moving a heavy object through a door, ensure that the door is wide enough to move the object and avoid bumping or injury.
When transferring a heavy object, move your feet instead of turning your waist around. When lifting and transferring a heavy object, ensure that your feet point to the target direction of movement.
When transporting the equipment using a pallet truck or forklift, ensure that the tynes are properly positioned so that the equipment does not topple. Before moving the equipment, secure it to the pallet truck or forklift using ropes. When moving the equipment, assign dedicated personnel to take care of it.
Choose sea, roads in good conditions, or airplanes for transportation. Do not transport the equipment by railway. Avoid tilt or jolt during transportation.

Issue 10 (2023-11-20)

9

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

1 Safety Information

Using Ladders

Use wooden or insulated ladders when you need to perform live-line working at heights.
Platform ladders with protective rails are preferred. Single ladders are not recommended.
Before using a ladder, check that it is intact and confirm its load bearing capacity. Do not overload it.
Ensure that the ladder is securely positioned and held firm.

When climbing up the ladder, keep your body stable and your center of gravity between the side rails, and do not overreach to the sides.
When a step ladder is used, ensure that the pull ropes are secured.
If a single ladder is used, the recommended angle for the ladder against the floor is 75 degrees, as shown in the following figure. A square can be used to measure the angle.

If a single ladder is used, ensure that the wider end of the ladder is at the bottom, and take protective measures to prevent the ladder from sliding.
If a single ladder is used, do not climb higher than the fourth rung of the ladder from the top.
If you use a single ladder to climb up to a platform, ensure that the ladder is at least 1 m higher than the platform.

Issue 10 (2023-11-20)

10

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

1 Safety Information

Hoisting

Only trained and qualified personnel are allowed to perform hoisting operations.
Install temporary warning signs or fences to isolate the hoisting area.
Ensure that the foundation where hoisting is performed on meets the loadbearing requirements.
Before hoisting objects, ensure that hoisting tools are firmly secured onto a fixed object or wall that meets the load-bearing requirements.
During hoisting, do not stand or walk under the crane or the hoisted objects.
Do not drag steel ropes and hoisting tools or bump the hoisted objects against hard objects during hoisting.
Ensure that the angle between two hoisting ropes is no more than 90 degrees, as shown in the following figure.

Drilling Holes

Obtain consent from the customer and contractor before drilling holes.
Wear protective equipment such as safety goggles and protective gloves when drilling holes.

Issue 10 (2023-11-20)

11

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

1 Safety Information

To avoid short circuits or other risks, do not drill holes into buried pipes or cables.
When drilling holes, protect the equipment from shavings. After drilling, clean up any shavings.

Issue 10 (2023-11-20)

12

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

Overview

2 Overview
2.1 Product Model
Model Description
NOTICE The SUN2000-110KTL-M2 is applicable only to the Chinese mainland. For other countries or regions, the Company does not provide quality assurance. This document covers the following product models: SUN2000-115KTL-M2 SUN2000-110KTL-M2 SUN2000-100KTL-M2 Figure 2-1 Model

Issue 10 (2023-11-20)

13

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

2 Overview

Table 2-1 Model description

No.

Description

Value

1

Product family SUN2000: grid-tied solar inverter

2

Power

115K: The power level is 115 kW. 110K: The power level is 110 kW. 100K: The power level is 100 kW.

3

Topology

TL: transformerless

4

Design code

M2: product series with an input voltage level of

1100 V DC

Model Identification
You can obtain the solar inverter model from the model label on the external package and the nameplate on the side of the enclosure.
Figure 2-2 Position of the model label on the external package

(1) Position of the model label

2.2 Overview

Description
SUN2000 solar inverters are grid-tied PV string inverters that convert the DC power generated by PV strings into AC power and feed the power into the power grid.
Characteristics
Smart
Ten independent maximum power point tracking (MPPT) circuits and 20 PV string inputs. Flexible configuration of PV strings is supported.
Smart PV module self-learning: Automatically detects PV module failures, helping rectify faults. Optimizes the working mode to obtain the optimal working mode of the system.

Issue 10 (2023-11-20)

14

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

2 Overview

Smart air cooling: Adjusts the fan speed based on the ambient temperature and load to ensure the service life of fans and avoid frequent maintenance.
MBUS networking: Uses the existing power line for communication and does not require additional communications cable, which reduces the construction and maintenance costs and improves communication reliability and efficiency.
Smart I-V curve diagnosis: Implements I-V scanning and health diagnosis for PV strings. In this way, potential risks and faults can be detected in time, improving the plant operation & maintenance (O&M) quality.
Safe
Embedded DC and AC surge protection devices (SPDs).
Embedded residual current monitoring unit: Immediately disconnects from the power grid upon detecting that the residual current exceeds the threshold.

Networking
SUN2000 solar inverters apply to grid-tied systems of large-scale PV plants and commercial distributed grid-tied systems. Typically, a grid-tied PV system consists of the PV string, solar inverter, AC combiner box, and transformer station.

Figure 2-3 Networking

(1) PV string (4) Transformer station

(2) SUN2000 (5) Power grid

(3) AC combiner box –

NOTE
In a non-low-voltage grid-connected scenario, the SUN2000-115KTL-M2 and SUN2000-100KTL-M2 need to connect to an isolation transformer and avoid overhead cabling.
Supported Power Grids
SUN2000 solar inverters support the TN-S, TN-C, TN-C-S, TT, and IT power grids.

Issue 10 (2023-11-20)

15

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual
Figure 2-4 Supported power grids

2 Overview

2.3 Label Description

Symbol

Name Running warning Burn warning Large current warning Delayed discharge
Refer to documentation

Meaning
Potential hazards exist after the inverter is powered on. Take protective measures when operating the inverter.
Do not touch a running inverter, as the shell becomes hot during operation.
Before powering on the inverter, ensure that the inverter is grounded because there is a large contact current after the inverter is powered on.
High voltage exists after the inverter is powered on. Only qualified and trained electrical technicians are allowed to perform operations on the inverter.
Residual voltage exists after the inverter is powered off. It takes 15 minutes for the inverter to discharge to the safe voltage.
Reminds operators to refer to the documents shipped with the inverter.

Issue 10 (2023-11-20)

16

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

Symbol

Name Grounding

2 Overview
Meaning Indicates the position for connecting the protective earthing (PE) cable.

Operation warning
Switching operation warning

Do not remove the DC input connector when the inverter is running.
The DC switch may fail to switch off automatically when it is not completely closed.

Switch unloaded warning This position indicates that the DC switch is in unloaded state. Do not set the DC switch to this position.

Fan operation warning

High voltage exists after the inverter is powered on. Do not touch the fans when the inverter is working.

Fan replacement warning Before replacing a fan, disconnect its power connectors.

Inverter ESN label Weight label

Indicates the inverter serial number.
The inverter needs to be carried by four persons or using a pallet truck.

2.4 Product Appearance

Issue 10 (2023-11-20)

17

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual
2.4.1 Appearance
Front View
Figure 2-5 Front view

2 Overview

(1) Panel (3) Maintenance compartment door (5) External fan tray
Bottom View
Figure 2-6 Port description

(2) LED indicators (4) Mounting bracket –

(1) DC input terminal group 1 (PV1PV8, controlled by DC SWITCH 1) (3) Reset button 1 (RESET 1)
(5) DC switch 2 (DC SWITCH 2) (7) DC input terminal group 3 (PV15PV20, controlled by DC SWITCH 3) (9) Reset button 3 (RESET 3) (11) USB port (13) Hole for the AC output power cable

(2) DC switch 1 (DC SWITCH 1)
(4) DC input terminal group 2 (PV9PV14, controlled by DC SWITCH 2) (6) Reset button 2 (RESET 2) (8) DC switch 3 (DC SWITCH 3)
(10) Ventilation valve (12) Communications port (COM) (14) Hole for the tracking system power cable

Issue 10 (2023-11-20)

18

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual
DC Switch Description

2 Overview

DANGER
The DC switches automatically turn off when a fault occurs in the inverters (LED4 is steady red, and the three DC switches are OFF). In this case, contact your technical support. Do not turn on the DC switches by yourself.

Table 2-2 DC switch description

Switch Component

Description

DC SWITCH

ON The DC switch is ON and can automatically turn off for protection.

The DC switch is ON but cannot automatically turn off for protection.

OFF The DC switch is OFF.

RESET

When the DC switch automatically turns off for protection, the RESET button will be released.

When the RESET button is not pressed, the DC switch can

only be turned to the unloaded position be set to the ON position.

, and cannot

Dimensions
Figure 2-7 Dimensions

Issue 10 (2023-11-20)

19

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual
Wiring Area
Figure 2-8 Wiring port

2 Overview

(1) DC input terminals (3) Ground point on the enclosure
2.4.2 Indicator Status
Figure 2-9 Indicators

(2) RS485 port (4) AC terminal block

No. Indicator

1

PV connection

indicator

Status (Blinking Fast: On for 0.2s and Off for 0.2s; Blinking Slowly: On for 1s and Off for 1s)
Steady green

Description
At least one PV string is properly connected, and the DC input voltage of the corresponding MPPT circuit is at least 200 V.

Issue 10 (2023-11-20)

20

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

2 Overview

No. Indicator

Status (Blinking Fast: On for 0.2s and Off for 0.2s; Blinking Slowly: On for 1s and Off for 1s)

Description

Blinking green fast

If the alarm/maintenance indicator is red, an environmental fault at the DC side of the solar inverter is generated.

Off

The solar inverter disconnects

from all PV strings, or the DC

input voltage of all MPPT

circuits is less than 200 V.

2

Grid connection Steady green

indicator

The solar inverter is in gridtied mode.

Blinking green fast

If the alarm/maintenance indicator is red, an environmental fault at the AC side of the solar inverter is generated.

Off

The solar inverter is not in

grid-tied mode.

3

Communications Blinking green fast

indicator

The solar inverter receives communication data normally.

Off

The solar inverter has not

received communication data

for 10 seconds.

4

Alarm/

Maintenance

indicator

Alarm status

Steady red

A major alarm is generated.
If the PV connection indicator or grid connection indicator is blinking green fast, troubleshoot DC or AC environmental faults as instructed by the SUN2000 app.
If the PV connection indicator and grid connection indicator are both not blinking green fast, replace components or the solar inverter as instructed by the SUN2000 app.

Blinking red fast A minor alarm is generated.

Issue 10 (2023-11-20)

21

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

2 Overview

No. Indicator

Status (Blinking Fast: On for 0.2s and Off for 0.2s; Blinking Slowly: On for 1s and Off for 1s)

Blinking red slowly

Local maintenance status

Steady green
Blinking green fast

Blinking green slowly

Description
A warning alarm is generated.
Local maintenance succeeds. Local maintenance fails.
The solar inverter is in local maintenance or shuts down over a command.

NOTE
The PV connection indicator and the grid connection indicator preferentially indicate environmental faults.
Local maintenance refers to operations performed after a USB flash drive, a WLAN module, a Bluetooth module, or a USB data cable is inserted into the USB port of the solar inverter. For example, local maintenance includes data import and export using a USB flash drive, and connecting to the SUN2000 app over a WLAN module, a Bluetooth module, or a USB data cable.
If an alarm is generated during local maintenance, the alarm/maintenance indicator shows the local maintenance state first. After the USB flash drive, WLAN module, Bluetooth module, or USB data cable is removed, the indicator shows the alarm state.
2.5 Working Principles
2.5.1 Circuit Diagram
The solar inverter receives inputs from 20 PV strings. The inputs are grouped into 10 MPPT circuits inside the solar inverter to track the maximum power point of the PV strings. The DC power is then converted into three-phase AC power through an inverter circuit. Surge protection is supported on both the DC and AC sides.

Issue 10 (2023-11-20)

22

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual
Figure 2-10 Schematic diagram

2 Overview

2.5.2 Working Modes
The SUN2000 can work in Standby, Operating, or Shutdown mode.

Issue 10 (2023-11-20)

23

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual
Figure 2-11 Working modes

2 Overview

Table 2-3 Working mode description

Working Mode

Description

Standby

The SUN2000 enters Standby mode when the external environment does not meet the operating requirements. In Standby mode:
The SUN2000 continuously performs status check and enters the Operating mode once the operating requirements are met.
The SUN2000 enters Shutdown mode after detecting a shutdown command or a fault after startup.

Operating

In Operating mode:
The SUN2000 converts DC power from PV strings into AC power and feeds the power to the power grid.
The SUN2000 tracks the maximum power point to maximize the PV string output.
If the SUN2000 detects a fault or a shutdown command, it enters the Shutdown mode.
The SUN2000 enters Standby mode after detecting that the PV string output power is not suitable for connecting to the power grid for generating power.

Shutdown

In Standby or Operating mode, the SUN2000 enters Shutdown mode after detecting a fault or shutdown command.
In Shutdown mode, the SUN2000 enters Standby mode after detecting a startup command or that the fault is rectified.

Issue 10 (2023-11-20)

24

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

Solar Inverter Storage

3 Solar Inverter Storage
The following requirements should be met if the solar inverter is not put into use immediately: Do not remove the packing materials, and check the packing materials
regularly (recommended: every three months). If any rodent bites are found, replace the packing materials immediately. If the solar inverter is unpacked but not put into use immediately, put it inside the original package with the desiccant bag, and seal it using tape. The ambient temperature and humidity should be suitable for the storage. The air must not contain corrosive or flammable gases.
Figure 3-1 Storage temperature and humidity

The solar inverter should be stored in a clean and dry place and be protected from dust and water vapor corrosion. The solar inverter must be protected against rain and water.
Do not tilt the package or place it upside down.
To avoid personal injury or device damage, stack inverters with caution to prevent them from falling over.

Issue 10 (2023-11-20)

25

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

3 Solar Inverter Storage

Figure 3-2 Maximum number of stacking layers allowed

If the solar inverter has been stored for more than two years, it must be checked and tested by professionals before being put into use.

Issue 10 (2023-11-20)

26

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

Installation

4 Installation

4.1 Check Before Installation
Checking Outer Packing Materials
Before unpacking the solar inverter, check the outer packing materials for damage, such as holes and cracks, and check the solar inverter model. If any damage is found or the solar inverter model is not what you requested, do not unpack the package and contact your supplier as soon as possible.
NOTE
You are advised to remove the packing materials within 24 hours before installing the solar inverter.
Checking Accessories
NOTICE After placing the equipment in the installation position, unpack it with care to
prevent scratches. Keep the equipment stable during unpacking.
After unpacking the solar inverter, check that the components are intact and complete. If any damage is found or any component is missing, contact your dealer.
NOTE
For details about the number of accessories delivered with the solar inverter, see the Packing List in the packing case.

Issue 10 (2023-11-20)

27

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

4.2 Tools

Category

Tool

4 Installation

Hammer drill

Drill bit (14 mm and 16 mm)

Insulated torque socket wrench (including an extension bar 50 mm)

Phillips insulated torque screwdriver

Installation tools

Flat-head insulated torque screwdriver

Wire strippers

Diagonal pliers Rubber mallet

Utility knife

Cable cutter

Crimping tool
Model: H4TC0003
Manufacturer: AMPHENOL
(For Amphenol Helios H4 connectors only)

Open-end wrench
Model: H4TW0001
Manufacturer: AMPHENOL
(For Amphenol Helios H4 connectors only)

Issue 10 (2023-11-20)

28

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

Category

Tool

4 Installation

RJ45 crimping tool

Vacuum cleaner

Multimeter (DC voltage measurement range 1100 V DC)

Marker

Measuring tape

Bubble or digital Hydraulic pliers level

Heat shrink tubing

Heat gun

Cable tie

Scissors

–

Insulation resistance tester (Output voltage > 1500 V)
–

Crimping tool
Model: PVCZM-22100
Manufacturer: Staubli
(For Staubli MC4 connectors only)

Open-end wrench
Model: PV-MSHZ
Manufacturer: Staubli
(For Staubli MC4 connectors only)

Issue 10 (2023-11-20)

29

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

Category

Tool

4 Installation

Personal protective equipment (PPE)

Insulated gloves

Safety goggles

Dust mask

Insulated shoes –

Safety helmet

Reflective vest

Protective gloves

4.3 Determining the Installation Position

Installation Environment Requirements
Do not install the inverter in working or living areas.
Do not install the inverter in noise-sensitive areas (such as residential areas, office areas, and schools) to avoid complaints. If the preceding areas are unavoidable, the distance between the installation position and noisesensitive areas must be greater than 40 m. Alternatively, use other low- noise models.
If the device is installed in public places (such as parking lots, stations, and factories) other than working and living areas, install a protective net outside the device, set up a safety warning sign to isolate the device, and prevent unauthorized personnel from approaching the inverter. This is to avoid personal injury or property loss caused by accidental contact or other reasons during device operation.
If the inverter is installed in a place with abundant vegetation, in addition to routine weeding, harden the ground underneath the inverter using cement or gravel (the area shall be greater than or equal to 3 m x 2.5 m).
Do not install the inverter in areas with flammable materials.
Do not install the inverter in areas with explosive materials.
Do not install the inverter in areas with corrosive materials.
Do not install the inverter where its enclosure and heat sinks are easily accessible, because the voltage is high and these parts are hot during operation.
Install the inverter in a well-ventilated environment for heat dissipation.
Install the inverter in an environment with a magnetic field strength less than 4 Gauss. If the magnetic field strength is high, for example, in a smeltery, you are advised to use a gauss meter to measure the magnetic field strength of the inverter installation position when the smelting equipment is running

Issue 10 (2023-11-20)

30

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

4 Installation

normally. If the magnetic field strength is greater than or equal to 4 Gauss, the inverter may fail to work properly.
If the inverter is installed in an airtight environment, a heat dissipation device or ventilation device must be installed to ensure that the indoor ambient temperature is not higher than the external ambient temperature during operation.
You are advised to install the inverter in a sheltered place or install an awning over it.
The inverter will be corroded in salt areas. Before installing the inverter outdoors in salt areas, consult Huawei. A salt area refers to the region within 500 meters from the coast or prone to sea breeze. The regions prone to sea breeze vary with weather conditions (such as typhoons and monsoons) or terrains (such as dams and hills).

Mounting Structure Requirements
The mounting structure where the solar inverter is installed must be fire resistant. Do not install the solar inverter on flammable building materials.
Ensure that the installation surface is solid enough to bear the solar inverter.
In residential areas, do not install the solar inverter on drywalls or walls made of similar materials with a weak sound insulation performance because the noise generated by the solar inverter may interfere with residents.

Figure 4-1 Mounting structure

Installation Angle Requirements
The solar inverter can be support-mounted or wall-mounted. The installation angle requirements are as follows:
Install the solar inverter vertically or at a maximum back tilt of 75 degrees to facilitate heat dissipation.
Do not install the solar inverter at forward tilted, excessive back tilted, side tilted, horizontal, or upside down positions.

Issue 10 (2023-11-20)

31

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual
Figure 4-2 Angle

4 Installation

Installation Dimensions Requirements
Reserve enough space around the solar inverter for installation and heat dissipation.
Figure 4-3 Installation clearance

Issue 10 (2023-11-20)

32

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

4 Installation

NOTE
For ease of installing the solar inverter on the mounting bracket, connecting cables to the bottom of the solar inverter, and maintaining the solar inverter in future, it is recommended that the bottom clearance be between 600 mm and 730 mm. If you have any question about the clearance, consult the local technical support engineers.
When installing multiple solar inverters, install them in horizontal mode if sufficient space is available and install them in triangle mode if no sufficient space is available. Stacked installation is not recommended.
Figure 4-4 Horizontal installation mode (recommended)

Figure 4-5 Triangle installation mode (recommended)

Issue 10 (2023-11-20)

33

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual
Figure 4-6 Stacked installation mode (not recommended)

4 Installation

4.4 Installing the Mounting Bracket
Before installing the mounting bracket, remove the security Torx wrench and keep it for later use. Figure 4-7 Position for binding the security Torx wrench
(1) Security Torx wrench
The mounting bracket of the solar inverter has four groups of tapped holes, each group containing four tapped holes. Mark any hole in each group based on site requirements and mark four holes in total. The two round holes are recommended.

Issue 10 (2023-11-20)

34

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual
Figure 4-8 Hole dimensions

4 Installation

4.4.1 Support-mounted Installation
Prerequisites
M12x40 bolt assemblies are supplied with the mounting bracket. If the bolt length does not meet the installation requirements, prepare M12 bolt assemblies by yourself and use them together with the supplied M12 nuts.
Procedure
Step 1 Determine the positions for drilling holes using the mounting bracket. Level the positions of mounting holes using a bubble or digital level, and mark the positions with a marker.
Step 2 Drill holes using a hammer drill. It is recommended that anti-rust measures be taken on the positions for drilling holes.
Step 3 Secure the mounting bracket.
Figure 4-9 Installing the mounting bracket

—-End

Issue 10 (2023-11-20)

35

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

4 Installation

4.4.2 Wall-mounted Installation

Prerequisites
You have prepared expansion bolts. M12x60 stainless steel expansion bolts are recommended.
Procedure
Step 1 Determine the positions for drilling holes using the mounting bracket. Level the positions of mounting holes using a bubble or digital level, and mark the positions with a marker.
Step 2 Drill holes using a hammer drill and install expansion bolts.

WARNING
Avoid drilling holes in the position of the wall with water pipes and power cables buried inside.

NOTICE
To prevent dust inhalation or contact with eyes, wear safety goggles and an anti-dust respirator when drilling holes.
Clean up any dust in and around the holes using a vacuum cleaner and measure the distance between holes. If the holes are inaccurately positioned, drill a new set of holes.
Level the head of the expansion sleeve with the concrete wall after removing the bolt, spring washer, and flat washer. Otherwise, the mounting bracket will not be securely installed on the wall.
Step 3 Secure the mounting bracket.

Issue 10 (2023-11-20)

36

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual
Figure 4-10 Installing the mounting bracket

4 Installation

—-End
4.5 Installing a Solar Inverter
Context
NOTICE
Move the solar inverter with care to prevent device damage and personal injury.
It takes multiple persons or a pallet truck to move the solar inverter. Do not use the ports and wiring terminals at the bottom to support any weight
of the solar inverter. When you need to temporally place the solar inverter on the ground, use foam,
paper, or other protection material to prevent damage to its cover. Use lifting handles to facilitate installation, which are optional and delivered
separately. Ensure that the lifting handles are securely installed. After the installation is complete, remove the lifting handles and keep them properly. Secure the lifting handles (with the steel washers of the lifting handles closely fitted to the battery pack). If the stud of a lifting handle is bent, replace the lifting handle in time. To avoid damage to the equipment, do not lift or hoist a solar inverter with an improper hold as shown in Figure 4-12.

Issue 10 (2023-11-20)

37

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual
Figure 4-11 Positions for installing the lifting handles

4 Installation

(A) Transportation scenario
Figure 4-12 Lifting positions

(B) Installation scenario

Procedure
Step 1 Lift the solar inverter from the packing case and move it to the installation position.
Figure 4-13 Taking out the solar inverter

Step 2 Lift the solar inverter and keep it upright.

Issue 10 (2023-11-20)

38

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual
Figure 4-14 Lifting the solar inverter and keeping it upright

4 Installation

Step 3 If the installation position is too high to install the solar inverter on the mounting bracket, run a rope that is strong enough to bear the solar inverter through the two lifting eyes, and hoist the solar inverter.
NOTICE Hoist the solar inverter with care to protect it from colliding with the wall or other objects.
Figure 4-15 Hoisting the solar inverter

Step 4 Install the solar inverter on the mounting bracket and align the solar inverter enclosure with the mounting bracket.

Issue 10 (2023-11-20)

39

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual
Figure 4-16 Mounting the solar inverter

4 Installation

Step 5 Secure the solar inverter. Figure 4-17 Tightening security Torx screws
—-End

Issue 10 (2023-11-20)

40

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

Electrical Connections

5 Electrical Connections

5.1 Precautions

DANGER
After the PV array receives solar irradiance, it transmits the DC voltage to the solar inverter. Before connecting cables, ensure that all DC switches on the solar inverter are set to OFF. Otherwise, the high voltage of the solar inverter may result in electric shocks.
The site must be equipped with qualified fire fighting facilities, such as fire sand and carbon dioxide fire extinguishers.
Wear personal protective equipment and use dedicated insulated tools to avoid electric shocks or short circuits.

WARNING
The device damage caused by incorrect cable connections is beyond the warranty scope.
Only qualified technicians can perform operations about electrical connection. Wear proper PPE at all time when connecting cables. To prevent poor cable connection due to overstress, leave enough slack before
connecting the cables to the appropriate ports.

CAUTION
Stay away from the equipment when preparing cables to prevent cable scraps from entering the equipment. Cable scraps may cause sparks and result in personal injury and equipment damage.

Issue 10 (2023-11-20)

41

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

5 Electrical Connections

NOTE
The cable colors shown in the electrical connection diagrams provided in this chapter are for reference only. Select cables in accordance with local cable specifications (green-andyellow cables are only used for protective earthing).

5.2 Preparing Cables
SUN2000 solar inverters support RS485 communication and MBUS communication.

NOTICE
The MBUS communication is applicable to medium-voltage grid connection scenarios and non-low-voltage public grid connection scenarios (industrial environment).

NOTE

In the networking diagram, indicates the power cable,

direction, and and

indicate the signal flow.

indicates the power flow

Figure 5-1 RS485 networking (SmartLogger)

(A) PV string (D) Transformer station (G) Management system

(B) SUN2000 (E) Power grid –

(C) AC combiner box (F) SmartLogger –

Issue 10 (2023-11-20)

42

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual
Figure 5-2 RS485 networking (SDongle)

5 Electrical Connections

(A) PV string (D) Transformer station (G) Management system

(B) SUN2000 (E) Power grid –

Figure 5-3 MBUS networking (SmartLogger)

(C) AC combiner box (F) SDongle –

(A) PV string (D) Transformer station (G) Management system

(B) SUN2000 (E) Power grid –

(C) AC combiner box (F) SmartLogger –

Issue 10 (2023-11-20)

43

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual
Figure 5-4 MBUS networking (SDongle)

5 Electrical Connections

(A) PV string (D) Transformer station (G) Management system

(B) SUN2000 (E) Power grid –

(C) AC combiner box (F) SDongle –

NOTICE
To ensure the system response speed, it is recommended that less than 30 solar inverters be connected to each COM port on the SmartLogger and that less than 10 solar inverters be cascaded over the SDongle.
The RS485 communication distance between the last solar inverter and the SmartLogger cannot exceed 1000 m.

Issue 10 (2023-11-20)

44

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

5 Electrical Connections

Figure 5-5 Cable connections (configure the components in the dotted box as required)

Table 5-1 Components

No.

Component

Description

Source

A

PV string

PV strings consist of PV modules in series.
A solar inverter supports 20 PV string inputs.

Prepared by the customer

B

SmartLogger

The solar inverter communicates with the management system through the SmartLogger.

Purchased from the Company

C

Power Meter

Implements power control at the gridtied point in low voltage scenarios using a power meter.
Recommended meter model: DTSU666HW

Prepared by the customer

D

Support tracking system Adjusts the angle of the supports.

Prepared by the

customer

Issue 10 (2023-11-20)

45

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

5 Electrical Connections

No.

Component

Description

Source

E

Fuse/Circuit breaker

The tracking system should be

Prepared by the

equipped with an overcurrent

customer

protection device or component. The

power cable between the device or

component and the wiring terminal

should be no longer than 2.5 m.

Therefore, a fuse or a circuit breaker is recommended.

Installed between the solar inverter and tracking control box

Fuse specifications: rated voltage 500 V; rated current: 16 A; protection: gG

Circuit breaker specifications: rated voltage 500 V; rated current: 16 A; tripping: C

F

AC switch

To ensure that the inverter can be safely disconnected from the power grid when an exception occurs, connect an AC switch to the AC side of the inverter. Select an appropriate AC switch in accordance with local industry standards and regulations. Huawei recommends the following switch specifications:
Installed in the AC combiner box
Recommended: a three-phase AC circuit breaker with a rated voltage greater than or equal to 500 V AC and a rated current of 250 A

Prepared by the customer

G

SDongle

The solar inverter communicates with the management system through the SDongle.

Purchased from the Company

NOTICE
The solar inverter has an RCMU inside. Its external AC switch should be a threephase circuit breaker or other AC load circuit breakers to safely disconnect the solar inverter from the power grid.

Issue 10 (2023-11-20)

46

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

5 Electrical Connections

NOTE
The cable size must comply with local cable standards. The factors that affect cable selection include the rated current, cable type, routing
mode, ambient temperature, and maximum expected line loss. If MBUS is used for communication, you are advised to use multi-core cables with the
maximum communication distance of 1000 m. To use other types of AC power cables, contact local technical support.

Table 5-2 Cable description (S: cross-sectional area of the AC cable conductor; Sp: cross-sectional area of the PE cable conductor)

No. Cable

Category

Conductor

Outer

Cross-Sectional Diameter

Area Range

Source

1

DC input power PV cable that meets the

cable

1100 V standard

46 mm2

5.59 mm

Prepared by the customer

2

RS485

Outdoor shielded twisted

0.251 mm2

communications pair that meets the local

cable

standard

One or two commu nicatio ns cables: 411 mm
Three commu nicatio ns cables: 48 mm

Prepared by the customer

3

PE cable[1]

Single-core outdoor copper Sp S/2

–

cable and M10 OT/DT

terminals

Prepared by the customer

4

Tracking system Three-core outdoor copper 10 mm2

power cable

cable with dual-layer

protection

1518 mm Prepared by the customer

Issue 10 (2023-11-20)

47

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

5 Electrical Connections

No. Cable

5

AC output

power cable

(multi-core)

Category

Conductor

Outer

Cross-Sectional Diameter

Area Range

Source

If you connect a ground cable to the ground point on the device enclosure and the neutral wire is not used, you are advised to use a three-core (L1, L2, and L3) outdoor cable and M12 OT/DT terminals (L1, L2, and L3).
If you connect a PE cable to the ground point in the maintenance compartment and the neutral wire is not used, you are advised to use a four-core (L1, L2, L3, and PE) outdoor cable, M12 OT/DT terminals (L1, L2, and L3), and M10 OT/DT terminals (PE).
If you connect a ground cable to the ground point on the device enclosure and the neutral wire is used, you are advised to use a four-core (L1, L2, L3, and N) outdoor cable and M12 OT/DT terminals (L1, L2, L3, and N).
If you connect a PE cable to the ground point in the maintenance compartment and the neutral wire is used, you are advised to use a fivecore (L1, L2, L3, N, and PE) outdoor cable, M12 OT/DT terminals (L1, L2, L3, and N), and M10 OT/DT terminals (PE).

Copper cable:
S: 70240 mm2
Sp S/2
Aluminum alloy cable or copperclad aluminum cable:
S: 95240 mm2
Sp S/2

2466 mm Prepared by the customer

Issue 10 (2023-11-20)

48

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

5 Electrical Connections

No. Cable

Category

Conductor

Outer

Cross-Sectional Diameter

Area Range

Source

AC output power cable (single-core)

You are advised to use a single-core outdoor cable and M12 OT/DT terminals.

Copper cable: S: 70240 mm2
Aluminum alloy cable or copperclad aluminum cable: S: 95240 mm2

1432 mm Prepared by the customer

Note [1]: The value of Sp is valid only if the conductors of the PE cable and AC power cable use the same material. If the materials are different, ensure that the conductor of the PE cable with a proper cross-sectional area produces a conductance equivalent to that of the cable specified in the table. The specifications of the PE cable are subject to this table or calculated according to IEC 60364-5-54.

5.3 Connecting the PE Cable
Context
NOTICE
Proper grounding is helpful for resisting the impact of surge voltage and improving the electromagnetic interference (EMI) performance. Before connecting the AC power cable, DC power cables, and communications cable, connect the PE cable to the PE point.
You are advised to choose the ground point on the enclosure. The ground point in the maintenance compartment is used for connecting to the PE cable contained in the multi-core AC power cable.
It is recommended that the PE cable of the solar inverter be connected to a nearby ground point. Connect the PE points of all solar inverters in the same array to ensure equipotential connections to PE cables.
Procedure
Step 1 Connect the PE cable to the PE point.

Issue 10 (2023-11-20)

49

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

5 Electrical Connections

Figure 5-6 Connecting the PE cable to the PE point (on the enclosure)

(1) Reserved PE point
—-End
Follow-up Procedure
To enhance the corrosion resistance of a ground terminal, apply silica gel or paint on it after connecting the PE cable.
5.4 Opening the Maintenance Compartment Door
Precautions
CAUTION Do not open the panel cover of the solar inverter. Before opening the maintenance compartment door, ensure that no electrical
connections are made for the solar inverter on the AC or DC side. Do not open the maintenance compartment door on rainy or snowy days. If
you need to, take protective measures to prevent rain or snow from entering the maintenance compartment. Do not leave unused screws in the maintenance compartment.
Procedure
Step 1 Open the maintenance compartment door and install the support bar.

Issue 10 (2023-11-20)

50

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

5 Electrical Connections

Figure 5-7 Opening the maintenance compartment door

Step 2 Remove the accessories and keep them properly. Figure 5-8 Removing the accessories

Step 3 Select a crimping module according to the type of the AC output power cable.

Issue 10 (2023-11-20)

51

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual
Figure 5-9 Select the crimping module

5 Electrical Connections

(A) Crimping module for multi-core cables

(B) Crimping module for single-core cables

—-End

Follow-up Procedure
Use scissors to cut off the joints of the rubber rings to remove them. All rubber rings are removed in the same way.

NOTICE Remove the corresponding rubber rings in strict accordance with the cable diameter, and ensure that the crimping module is not damaged. Otherwise the protection level of the solar inverter will be affected.
Figure 5-10 Remove the rubber ring

Issue 10 (2023-11-20)

52

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

5 Electrical Connections

5.5 (Optional) Installing the Power Cable of the Tracking System
Precautions
WARNING
The tracking system obtains power from the AC three-phase power grid. The rated voltage of the power supply is the rated output voltage of the solar inverter.
Keep flammable materials away from the power cable. The power cable must be protected with a conduit to prevent short circuits
caused by insulation layer damage. Connect the power cable of the tracking system before the AC output power
cable. Otherwise, reworking will be caused.
Procedure
Step 1 Prepare a cable. Step 2 Remove the corresponding rubber rings. Step 3 Connect the power cable of the tracking system.
Figure 5-11 Connecting the power cable of the tracking system

—-End

5.6 Connecting an AC Output Power Cable

Prerequisites

To ensure that the inverter can be safely disconnected from the power grid when an exception occurs, connect an AC switch to the AC side of the inverter.

Issue 10 (2023-11-20)

53

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

5 Electrical Connections

Select an appropriate AC switch in accordance with local industry standards and regulations.
Connect the AC output power cable according to the requirements specified by local power grid operators.
Connect the power cable of the tracking system before the AC output power cable. Otherwise, reworking will be caused.

Figure 5-12 Cable connection sequence

(1) Power cable of the tracking system

(2) AC output power cable

WARNING
Do not connect loads between the inverter and the AC switch that directly connects to the inverter. Otherwise, the switch may trip by mistake.
If an AC switch is used with specifications beyond local standards, regulations, or the Company’s recommendations, the switch may fail to turn off in a timely manner in case of exceptions, causing serious faults.

CAUTION
Each inverter must be equipped with an AC output switch. Multiple inverters cannot connect to the same AC output switch.

Requirements for the OT/DT Terminal
If a copper cable is used, use copper wiring terminals. If a copper-clad aluminum cable is used, use copper wiring terminals.

Issue 10 (2023-11-20)

54

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

5 Electrical Connections

If an aluminum alloy cable is used, use copper-aluminum transition wiring terminals, or aluminum wiring terminals along with copper-aluminum transition spacers.

NOTICE
Do not connect aluminum wiring terminals to the AC terminal block. Otherwise the electrochemical corrosion will occur and affect the reliability of cable connections.
Comply with the IEC61238-1 requirements when using copper-aluminum transition wiring terminals, or aluminum wiring terminals along with copperaluminum transition spacers.
If copper-aluminum transition spacers are used, pay attention to the front and rear sides. Ensure that the aluminum sides of spacers are in contact with aluminum wiring terminals, and copper sides of spacers are in contact with the AC terminal block.
Figure 5-13 Requirements for the OT/DT terminal

Issue 10 (2023-11-20)

55

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual
Figure 5-14 AC terminal block dimensions

5 Electrical Connections

Procedure
Step 1 Prepare a cable.
Step 2 Remove rubber rings according to the cable diameter range.
Step 3 Secure the AC output power cable and PE cable.
Step 4 Install the support bar.
Step 5 Close the maintenance compartment door and tighten the two screws on the door.
NOTICE
Sufficient slack should be provided in the PE cable to ensure that the last cable bearing the force is the PE cable when the AC output power cable bears pulling force due to force majeure.
The cable outer diameter can be measured using the ruler sticker in the maintenance compartment.
Ensure that the cable jacket is in the maintenance compartment. Ensure that the AC output power cable is secured. Failing to do so may cause
the solar inverter to malfunction or damage to its terminal block by issues such as overheating. Before closing the maintenance compartment door, check that the cables are connected correctly and securely, and clean up the foreign matter from the maintenance compartment. If a screw on the maintenance compartment door is lost, obtain the spare screw from the fitting bag tied at the bottom of the maintenance compartment.

Issue 10 (2023-11-20)

56

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual
Figure 5-15 Multi-core cable connections

5 Electrical Connections

Issue 10 (2023-11-20)

57

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual
Figure 5-16 Single-core cable connections

5 Electrical Connections

Issue 10 (2023-11-20)

58

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual
Figure 5-17 Cable connections

5 Electrical Connections

(A) Five-core cable (D) Three-core cable

(B) Four-core cable (including (C) Four-core cable (including

the PE cable)

the neutral wire)

(E) Single-core cable (including (F) Single-core cable

the neutral wire)

(excluding the neutral wire)

NOTE The cable colors shown in figures are for reference only. Select an appropriate cable according to the local standards.
Figure 5-18 Closing the Maintenance Compartment Door

—-End

Issue 10 (2023-11-20)

59

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

5 Electrical Connections

5.7 Connecting DC Input Power Cables
CAUTION
Two models of PV connectors are delivered with the device: Amphenol Helios H4 and Staubli MC4. PV connectors of different models cannot be used together. Device damage caused by mixed use of different PV connectors is not covered by the warranty. For details about using Amphenol Helios H4 PV connectors, see section 5.7.2
Connecting Cables to Amphenol Helios H4 Connectors. For details about using Staubli MC4 PV connectors, see section 5.7.3
Connecting Cables to Staubli MC4 Connectors.
5.7.1 Cable Connection Description
Precautions
DANGER
Before connecting the DC input power cables, ensure that the DC voltage is within the safe range (lower than 60 V DC) and that the three DC switches on the solar inverter are set to OFF. Failing to do so may result in electric shocks.
If you turn a DC SWITCH to ON by mistake when connecting or disconnecting DC input power cables, do not remove or insert DC input terminals. If you need to remove or insert a DC input terminal, perform the operations provided in 8.2 Power-Off for Troubleshooting.
When the solar inverter operates in grid-tied mode, do not perform maintenance or operations on the DC circuit, such as connecting or disconnecting a PV string or a PV module in the PV string. Failing to do so may cause electric shocks or arcing, which may also cause fire.

WARNING
Ensure that the following conditions are met. Otherwise, the solar inverter may be damaged, or even a fire could happen.
According to IEC 62548, the maximum open-circuit voltage of each PV string cannot exceed 1100 V DC at the lowest average annual dry-bulb temperature.
The voltage difference between MPPTs shall be less than 85 V.
The polarities of electric connections are correct on the DC input side. The positive and negative terminals of a PV module connect to corresponding positive and negative DC input terminals of the solar inverter.

Issue 10 (2023-11-20)

60

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

5 Electrical Connections

NOTICE
Ensure that the PV module output is well insulated to ground.
The PV strings connecting to the same MPPT circuit should contain the same number of identical PV modules.
The solar inverter does not support full parallel connection for PV strings (full parallel connection: PV strings connect to one another in parallel outside the solar inverter and then connect to the solar inverter separately).
During the installation of PV strings and the solar inverter, the positive or negative terminals of PV strings may be short-circuited to ground if the power cable is not properly installed or routed. In this case, an AC or DC short circuit may occur and damage the solar inverter. The caused device damage is not covered under any warranty.

Terminal Description
The solar inverter has 20 DC input terminals. DC SWITCH 1 controls PV1PV8 (MPPT1MPPT4), DC SWITCH 2 controls PV9PV14 (MPPT5MPPT7), and DC SWITCH 3 controls PV15PV20 (MPPT8MPPT10).
Figure 5-19 DC terminals

When the DC input is not fully configured, the DC input terminals must meet the following requirements:
1. Evenly distribute the DC input power cables on the DC input terminals controlled by the three DC switches. DC SWITCH 1 is preferred.
2. The even-numbered PV terminals are preferred to maximize the connections of MPPTs.
3. If the number of PV inputs is 11 to 19, connect cables to the odd-numbered PV terminals from PV1 and PV19, and avoid connections to adjacent MPPTs if possible.
If the number of PV inputs is 11 to 19, the DC input terminals are selected as follows.

Issue 10 (2023-11-20)

61

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual
Figure 5-20 DC input terminal connections

5 Electrical Connections

5.7.2 Connecting Cables to Amphenol Helios H4 Connectors
Specification Requirements
Cables with high rigidity, such as armored cables, are not recommended, because poor contact may be caused by the bending of cables.

CAUTION
Use the Amphenol Helios H4 connectors delivered with the solar inverter. If the PV connectors are lost or damaged, purchase the connectors of the same model. The device damage caused by incompatible PV connectors is beyond the warranty scope.

Procedure
Step 1 Prepare the DC input power cables.
Step 2 Crimp positive and negative metal contacts.
Step 3 Insert the contacts into the corresponding positive and negative connectors.
Step 4 Tighten the lock nuts on the positive and negative connectors.
Step 5 Use a multimeter to measure the voltage between the positive and negative terminals of the PV string (measurement range no less than 1100 V). If the voltage is a negative value, the DC input polarity is incorrect and needs correction. If the voltage is greater than 1100 V, too many PV modules configured to the same string. Remove some PV modules.

Issue 10 (2023-11-20)

62

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

5 Electrical Connections

Step 6 Use an insulation resistance tester to test the insulation resistance between the PV cables and the ground: Add 1500 V DC voltage between the PV cables and the ground and check the insulation resistance.
If the insulation resistance is greater than or equal to 1 M, it is normal.
If the insulation resistance is less than 1 M, troubleshoot the cable insulation.

Figure 5-21 Testing the insulation resistance

NOTE
You can use a self-made tool to connect all PV cables together through an adapter to test the insulation resistance between all PV cables of a device and the ground at a time.
Figure 5-22 Testing the insulation resistance between all PV cables and the ground

Step 7 Insert the positive and negative connectors into the corresponding DC positive and negative input terminals of the solar inverter.

Issue 10 (2023-11-20)

63

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual
Figure 5-23 Connecting DC input power cables

5 Electrical Connections

Figure 5-24 Connector connection

Issue 10 (2023-11-20)

64

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

5 Electrical Connections

NOTICE
If the DC input power cables are reversely connected and DC switches are set to ON, do not immediately turn off the DC switches or reconnect the positive and negative connectors. Otherwise, the device may be damaged. The caused device damage is not covered under any warranty. Wait until the solar irradiance declines at night and the PV string current reduces to below 0.5 A. Then, turn off the three DC switches, remove the positive and negative connectors, and rectify the connection of the DC input power cables.
Connect the PV string connector to the inverter connector, and then pull back the PV string connector along the axial direction to check whether the connectors are securely connected.
The connector must be securely connected. Damages caused by improper connection are not covered under the warranty.

Figure 5-25 DC input power cabling requirement

NOTICE
During DC input power cabling, leave at least 50 mm of slack. The axial tension on PV connectors must not exceed 80 N. Radial stress or torque must not be generated on PV connectors.
—-End

Issue 10 (2023-11-20)

65

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

5 Electrical Connections

5.7.3 Connecting Cables to Staubli MC4 Connectors

Specification Requirements
Cables with high rigidity, such as armored cables, are not recommended, because poor contact may be caused by the bending of cables.

CAUTION
Use the Staubli MC4 connectors delivered with the solar inverter. If the PV connectors are lost or damaged, purchase the connectors of the same model. The device damage caused by incompatible PV connectors is beyond the warranty scope.
Procedure
Step 1 Prepare the DC input power cables.
Step 2 Crimp positive and negative metal contacts.
Step 3 Insert the contacts into the corresponding positive and negative connectors.
Step 4 Tighten the lock nuts on the positive and negative connectors.
Step 5 Use a multimeter to measure the voltage between the positive and negative terminals of the PV string (measurement range no less than 1100 V). If the voltage is a negative value, the DC input polarity is incorrect and needs correction. If the voltage is greater than 1100 V, too many PV modules configured to the same string. Remove some PV modules.
Step 6 Use an insulation resistance tester to test the insulation resistance between the PV cables and the ground: Add 1500 V DC voltage between the PV cables and the ground and check the insulation resistance. If the insulation resistance is greater than or equal to 1 M, it is normal. If the insulation resistance is less than 1 M, troubleshoot the cable insulation.
Figure 5-26 Testing the insulation resistance

Issue 10 (2023-11-20)

66

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

5 Electrical Connections

NOTE
You can use a self-made tool to connect all PV cables together through an adapter to test the insulation resistance between all PV cables of a device and the ground at a time.
Figure 5-27 Testing the insulation resistance between all PV cables and the ground

Step 7 Insert the positive and negative connectors into the corresponding DC positive and negative input terminals of the solar inverter.
Figure 5-28 Connecting DC input power cables

Issue 10 (2023-11-20)

67

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual
Figure 5-29 Connector connection

5 Electrical Connections

NOTICE
If the DC input power cables are reversely connected and DC switches are set to ON, do not immediately turn off the DC switches or reconnect the positive and negative connectors. Otherwise, the device may be damaged. The caused device damage is not covered under any warranty. Wait until the solar irradiance declines at night and the PV string current reduces to below 0.5 A. Then, turn off the three DC switches, remove the positive and negative connectors, and rectify the connection of the DC input power cables.
Connect the PV string connector to the inverter connector, and then pull back the PV string connector along the axial direction to check whether the connectors are securely connected.
The connector must be securely connected. Damages caused by improper connection are not covered under the warranty.
Figure 5-30 DC input power cabling requirement

Issue 10 (2023-11-20)

68

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

5 Electrical Connections

NOTICE During DC input power cabling, leave at least 50 mm of slack. The axial tension on PV connectors must not exceed 80 N. Radial stress or torque must not be generated on PV connectors.
—-End
5.8 Connecting the RS485 Communications Cables
Pin Definitions of the Communications Port
Figure 5-31 Communications port

Port RS485-1
Protection ground

Pin Definition

Description

1

RS485A IN, RS485

2

RS485A OUT, RS485 Used for cascading

differential signal+

differential signal+ solar inverters or

connecting to devices

3

RS485B IN, RS485

4

RS485B OUT, RS485 such as the

differential signal

differential signal SmartLogger.

5

PE, shielding ground 6

PE, shielding ground –

Issue 10 (2023-11-20)

69

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

5 Electrical Connections

Port RS485-2

Pin Definition

7

RS485A, RS485

differential signal+

Pin Definition

8

RS485B, RS485

differential signal

Description
Used for connecting to an RS485 slave device.
In the scenario of SDongle networking or a single solar inverter, the RS485-2 port is connected to a power meter to collect information about power at the gridtied point for gridtied point power control.
In the scenario of intelligent support tracking control, the RS485-2 port is connected to the support tracking system to collect support information.

Connecting the RS485 Communications Cables
When routing the communications cable, separate it from power cables to prevent communication from being affected. Connect the shield layer to the PE point. This section describes how to connect three communications cables.

Issue 10 (2023-11-20)

70

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

5 Electrical Connections

Figure 5-32 Connecting RS485 communications cables (48 mm four-hole rubber plug)

Figure 5-33 Connecting RS485 communications cables (48 mm two-hole or three- hole rubber plug)

5.9 (Optional) Installing a Smart Dongle
4G Smart Dongle

Issue 10 (2023-11-20)

71

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

5 Electrical Connections

NOTICE
If your Smart Dongle is not equipped with a SIM card, prepare a standard SIM card (size: 25 mm x 15 mm) with the capacity greater than or equal to 64 KB.
When installing the SIM card, determine its installation direction based on the silk screen and arrow on the card slot.
Press the SIM card in place to lock it, indicating that the SIM card is correctly installed.
When removing the SIM card, push it inwards to eject it.
When reinstalling the cover of the Smart Dongle, ensure that the buckle springs back in place.

Figure 5-34 Installing a 4G Smart Dongle (SDongleA-03)

Figure 5-35 Installing a 4G Smart Dongle (SDongleB-06)

Issue 10 (2023-11-20)

72

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

5 Electrical Connections

WLAN-FE Smart Dongle (WLAN Communication)

Figure 5-36 Installing a WLAN-FE Smart Dongle (WLAN communication)

WLAN-FE Smart Dongle (FE Communication) Figure 5-37 Installing a WLAN-FE Smart Dongle (FE communication)

NOTICE
Install the network cable before installing the Smart Dongle on the solar inverter.

Issue 10 (2023-11-20)

73

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

5 Electrical Connections

NOTE
For details about how to operate the WLAN-FE Smart Dongle SDongleA-05, see SDongleA-05 Smart Dongle Quick Guide (WLAN-FE). You can scan the QR code below to obtain the document.

For details about how to operate the 4G Smart Dongle SDongleA-03, see SDongleA-03 Quick Guide (4G). You can scan the QR code below to obtain the document.

For details about how to operate the 4G Smart Dongle SDongleB-06, see SDongleB-06 Smart Dongle Quick Guide (4G). You can scan the QR code below to obtain the document.

The quick guide is delivered with the Smart Dongle.

Issue 10 (2023-11-20)

74

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

Commissioning

6 Commissioning

Prerequisites
DANGER Wear personal protective equipment and use dedicated insulated tools to avoid
electric shocks or short circuits.

6.1 Check Before Power-on

No.

Acceptance Criteria

1

The solar inverter is installed correctly and securely.

2

The DC switches and the downstream AC switch are OFF.

3

All cables are connected correctly and securely.

4

The installation space is proper, and the installation environment

is clean and tidy.

5

The maintenance compartment door is closed and the screws are

secured.

6

Unused DC input terminals are sealed.

7

Unused USB and RESET ports are plugged with watertight caps.

Issue 10 (2023-11-20)

75

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

6 Commissioning

6.2 Powering On the SUN2000
Precautions
DANGER Wear personal protective equipment and use dedicated insulated tools to avoid
electric shocks or short circuits.

WARNING
When LED2 is steady green (meaning that the inverter is grid-tied), do not turn on any DC switch. Otherwise, the inverter may be damaged because the insulation resistance is not detected.

NOTICE

Before the equipment is put into operation for the first time, ensure that the parameters are set correctly by professional personnel. Incorrect parameter settings may result in noncompliance with local grid connection requirements and affect the normal operations of the equipment.
Before turning on the AC switch between the SUN2000 and the power grid, use a multimeter set to the AC position to check that the AC voltage is within the specified range.

Do not turn the DC switch to the unloaded position

.

When the system is powered on or running, do not place obstacles (such as cables) to block the rotation of the handle or manually hold the handle. Otherwise, the DC switch cannot be automatically disconnected.

If the solar inverter has been stored for more than two years, it must be checked and tested by professionals before being put into use.

Procedure
Step 1 Turn on the AC switch between the SUN2000 and the power grid.

NOTICE
If you perform Step 2 before Step 1, the SUN2000 reports a fault about abnormal shutdown. You can start the SUN2000 only after the fault is automatically rectified.

Step 2 Set DC SWITCH 1 (MAIN SWITCH) at the bottom of the solar inverter chassis to ON. When you hear a click, the switch is ON.

Issue 10 (2023-11-20)

76

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

6 Commissioning

Step 3 Check the status of the PV connection indicator. If it is steady green, set DC SWITCH 2 and DC SWITCH 3 to ON.
Step 4 Observe the LED indicators to check the SUN2000 operating status.
Step 5 Perform quick settings on the SUN2000 app. For details, see 7.1 Operations with the SUN2000 App.
—-End

Issue 10 (2023-11-20)

77

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

Man-Machine Interactions

7 Man-Machine Interactions

7.1 Operations with the SUN2000 App

7.1.1 App Introduction

Functions

The FusionSolar app is recommended when the SUN2000 is connected to the FusionSolar hosting cloud. The SUN2000 app is recommended when the SUN2000 is connected to other management systems.
The SUN2000 or FusionSolar app (app for short) is a mobile phone app that communicates with the SUN2000 over a WLAN/Bluetooth module or a USB data cable to allow for querying alarms, setting parameters, and performing routine maintenance as an easy-to-use maintenance platform.

Connection Mode
After the DC or AC side of the inverter is powered on, the app can connect to the inverter using the WLAN module, Bluetooth module, Smart Dongle, or USB data cable.

NOTICE
Over a WLAN module: The USB-Adapter2000-C WLAN module is supported. Over a Bluetooth module: The USB-Adapter2000-B Bluetooth module is
supported. Over a Smart Dongle: The SDongleB-06 is supported. Over a USB data cable: The USB 2.0 port is supported. Use the USB data cable
delivered with the mobile phone. Mobile phone operating system: Android 4.0 or later. Recommended phone brands: Huawei and Samsung.

Issue 10 (2023-11-20)

78

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

7 Man-Machine Interactions

Figure 7-1 Connection over a WLAN module or a Bluetooth module

(A) SUN2000

(B) WLAN module or Bluetooth module

Figure 7-2 Connection over a Smart Dongle

(C) Mobile phone

(A) SUN2000

(B) SDongle

Figure 7-3 Connection over a USB data cable

(C) Mobile phone

(A) SUN2000

(B) USB data cable

(C) Mobile phone

Issue 10 (2023-11-20)

79

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual
Disclaimer

7 Man-Machine Interactions

NOTICE
The configurable parameters of the SUN2000 vary with the device model and grid code.
If you change the grid code, some parameters may be restored to factory defaults. After the grid code is changed, check whether the previously set parameters are affected.
Delivering a reset, factory reset, shutdown, or upgrade command to the solar inverters may cause power grid connection failure, which affects the energy yield.
Before the equipment is put into operation for the first time, ensure that the parameters are set correctly by professional personnel. Incorrect parameter settings may result in noncompliance with local grid connection requirements and affect the normal operations of the equipment.
The parameter names, value ranges, and default values are subject to change.
7.1.2 Downloading and Installing the App
FusionSolar app: Scan the QR code and download the latest installation package.
SUN2000 app: Log in to Huawei AppGallery , search for SUN2000, and download the app installation package. You can also scan the QR code to download the installation package.
QR code:

7.1.3 Logging In to the App

Prerequisites

The DC or AC side of the SUN2000 has been energized. Connection over a WLAN module or a Bluetooth module:
a. The WLAN module or Bluetooth module is connected to the USB port at the bottom of the SUN2000.
b. The WLAN or Bluetooth function is enabled. c. Keep the mobile phone within 5 m from the SUN2000. Otherwise, the
communication between them would be affected.

Issue 10 (2023-11-20)

80

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

7 Man-Machine Interactions

Connection over a Smart Dongle, ensure that:
a. The Smart Dongle is inserted into the USB port at the bottom of the inverter.
b. The WLAN function is enabled on the phone.
c. The WLAN function is enabled on the Smart Dongle.
d. Keep the phone within 10 m of the Smart Dongle. Otherwise, communication between them might fail. The distance is for reference only and may vary with mobile phones and obstacles in-between.
Connection over a USB cable:
a. The USB data cable is connected from the USB port at the bottom of the SUN2000 to the port on the mobile phone.
b. If the USB data cable is successfully connected, the message Connected to USB Accessory will pop up on the phone. Otherwise, the cable is not connected.

Procedure

1. Run the app and select a connection mode.
NOTE
The screenshots in this document correspond to the SUN2000 app 6.22.10.117 (Android) and FusionSolar app 6.22.10.117 (Android). The screenshots are for reference only. The actual screens may vary.
When the WLAN connection is used, scan the QR code of the WLAN module to access the login screen.
When the WLAN connection is used, the initial name of the WLAN hotspot is Adapter-WLAN module SN, and the initial password is Changeme. Use the initial password upon first power-on and change it immediately after login. To ensure account security, change the password periodically and keep the new password in mind. Not changing the initial password may cause password disclosure. A password left unchanged for a long period of time may be stolen or cracked. If a password is lost, devices cannot be accessed. In these cases, the user is liable for any loss caused to the PV plant.
When the Bluetooth connection is used, the connected Bluetooth device is named after last 8 digits of the SN barcode+HWAPP.
After you select Use by default for this USB accessory, a message that asks you to confirm the USB access will not appear if you log in to the app again without removing the USB data cable.
a. (Scenario in which the SUN2000 is connected to the FusionSolar hosting cloud) Run the FusionSolar app and access the Device Commissioning screen.

Issue 10 (2023-11-20)

81

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual
Figure 7-4 Selecting a connection mode (with network access)

7 Man-Machine Interactions

Issue 10 (2023-11-20)

82

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual
Figure 7-5 Selecting a connection mode (without network access)

7 Man-Machine Interactions

b. (Scenario in which the SUN2000 is connected to other management systems) Run the SUN2000 app and access the operation screen.

Issue 10 (2023-11-20)

83

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual
Figure 7-6 Selecting a connection method

7 Man-Machine Interactions

2. Enter the login password, tap Log in to access the quick settings screen or the main menu screen.
NOTICE
When you log in to the system for the first time, set the login password. To ensure account security, protect the password by changing it periodically, and keep it secure. Your password might be stolen or cracked if it is left unchanged for extended periods. If a password is lost, devices cannot be accessed. In these cases, the Company shall not be liable for any loss caused to the plant.
You will be locked out for 10 minutes after five consecutive failed password attempts (the interval between two consecutive entries is less than 2 minutes).
If you log in to the app after the device connects to the app for the first time or factory defaults are restored, the quick settings screen will be displayed. Set basic parameters as prompted. If you do not set basic parameters for the inverter on the quick settings screen, the screen is still displayed when you log in to the app next time.
If the device has been connected to the SmartLogger, the quick settings screen is not automatically displayed when the device is connected to the app.
Set the correct grid code based on the application area and scenario of the solar inverter.

Issue 10 (2023-11-20)

84

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual
Figure 7-7 Login

7 Man-Machine Interactions

7.1.4 Setting Parameters

7.1.4.1 Setting Grid Parameters
Choose Settings > Grid parameters to set grid parameters.

No. Parameter

Description

1

Grid Code

Set this parameter based on the grid code of the country or region where the inverter is used and the inverter application scenario.

2

Isolation

Set the working mode of the inverter based on the grounding status at DC side and the connection to the power grid.

3

Output mode

Specifies whether the inverter output has a neutral wire based on the application scenario.

4

Auto start upon grid Specifies whether to allow the inverter to automatically start

recovery

after the power grid recovers.

5

Grid connection delay Specifies the time after which the inverter begins restarting

after grid recovery (s) after the power grid recovers.

Issue 10 (2023-11-20)

85

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

7 Man-Machine Interactions

No. Parameter

Description

6

Grid reconnection

The standards of certain countries and regions require that after

voltage upper limit (V) the inverter shuts down for protection due to a fault, if the

power grid voltage is higher than Grid reconnection voltage

upper limit, the inverter is not allowed to reconnect to the grid.

7

Grid reconnection

The standards of certain countries and regions require that after

voltage lower limit (V) the inverter shuts down for protection due to a fault, if the

power grid voltage is lower than Grid reconnection voltage

lower limit, the inverter is not allowed to reconnect to the grid.

8

Grid reconnection

The standards of certain countries and regions require that after

frequency upper limit the inverter shuts down for protection due to a fault, if the

(Hz)

power grid frequency is higher than Grid reconnection

frequency upper limit, the inverter is not allowed to reconnect

to the grid.

9

Grid reconnection

The standards of certain countries and regions require that after

frequency lower limit the inverter shuts down for protection due to a fault, if the

(Hz)

power grid frequency is lower than Grid reconnection

frequency lower limit, the inverter is not allowed to reconnect

to the grid.

7.1.4.2 Setting Protection Parameters
Choose Settings > Protection parameters to set protection parameters.

No. Parameter

Description

1

Unbalance voltage

Specifies the inverter protection threshold when the power grid

protection threshold

voltage is unbalanced.

(%)

2

Insulation resistance

To ensure device safety, the inverter detects the insulation

protection threshold

resistance of the input side with respect to ground when it

(M)

starts a self-check. If the detected value is less than the preset

value, the inverter does not connect to the grid.

3

Phase angle offset

The standards of certain countries and regions require that the

protection

inverter needs to be protected when the phase angle offset of

the power grid three phases exceeds a certain value.

4

Voltage threshold for Specifies the 10-minute overvoltage protection threshold.

10-minute overvoltage

protection (V)

5

Duration threshold for Specifies the 10-minute overvoltage protection duration.

10-minute overvoltage

protection (ms)

Issue 10 (2023-11-20)

86

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

7 Man-Machine Interactions

No. Parameter

Description

6

Level-1 overvoltage

Specifies the level-1 grid overvoltage protection threshold.

protection threshold

(V)

7

Duration threshold for Specifies the level-1 grid overvoltage protection duration.

level-1 overvoltage

protection (ms)

8

Level-1 undervoltage Specifies the level-1 grid undervoltage protection threshold.

protection threshold

(V)

9

Duration threshold for Specifies the level-1 grid undervoltage protection duration.

level-1 undervoltage

protection (ms)

10

Level-2 undervoltage Specifies the level-2 grid undervoltage protection threshold.

protection threshold

(V)

11

Duration threshold for Specifies the level-2 grid undervoltage protection duration.

level-2 undervoltage

protection (ms)

12

Level-1 overfrequency Specifies the level-1 grid overfrequency protection threshold.

protection threshold

(Hz)

13

Duration threshold for Specifies the level-1 grid overfrequency protection duration.

level-1 overfrequency

protection (ms)

14

Level-1 underfrequency Specifies the level-1 grid underfrequency protection threshold.

protection threshold

(Hz)

15

Duration threshold for Specifies the level-1 grid underfrequency protection duration.

level-1 underfrequency

protection (ms)

16

Active islanding

protection

Specifies whether to enable the active islanding protection function.

7.1.4.3 Setting Feature Parameters
Choose Settings > Feature parameters to set feature parameters.

Issue 10 (2023-11-20)

87

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

7 Man-Machine Interactions

No. Parameter

Description

Remarks

1

MPPT multi-peak When the inverter is used in

–

scanning

scenarios where PV strings are

greatly shaded, set this parameter

to Enable, and then the inverter

will perform MPPT scanning at

regular intervals to locate the

maximum power.

2

MPPT multi-peak Specifies the MPPT scanning

scan interval (min) interval.

This parameter is displayed when MPPT multi-peak scanning is set to Enable.

3

LVRT

LVRT is short for low voltage ride- through. When the grid voltage is abnormally low for a short time, the inverter cannot disconnect from the power grid immediately and has to work for some time.

4

LVRT triggering

Specifies the threshold for

This parameter is displayed

threshold (V)

triggering LVRT. The threshold

when LVRT is set to Enable.

settings should meet the local

grid standard.

5

LVRT gradient K1 During LVRT, the solar inverter

needs to generate positive-

sequence reactive power to

support the power grid. This

parameter is used to set the

positive-sequence reactive power

generated by the solar inverter.

For example, if you set LVRT gradient K1 to 2, the increment of positive- sequence reactive current generated by the solar inverter is 20% of the rated current when the AC voltage decreases by 10% during LVRT.

Issue 10 (2023-11-20)

88

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

7 Man-Machine Interactions

No. Parameter

Description

Remarks

6

LVRT gradient K2 During LVRT, the solar inverter

needs to generate negative-

sequence reactive power to

support the power grid. This

parameter is used to set the

negative-sequence reactive power

generated by the solar inverter.

For example, if you set LVRT gradient K2 to 2, the increment of negative- sequence reactive current generated by the solar inverter is 20% of the rated current when the AC voltage decreases by 10% during LVRT.

7

Percentage of LVRT During LVRT, the solar inverter

reactive current

needs to limit the reactive

limiting

current.

For example, if you set Percentage of LVRT reactive current limiting to 50, the reactive current upper limit of the solar inverter is 50% of the rated current during LVRT.

8

Threshold of LVRT When Zero current due to

zero-current mode power grid fault is enabled, if

the power grid voltage is less

than the value of Threshold of

LVRT zero-current mode during

LVRT, the zero current mode is

used. Otherwise, the mode

configured in LVRT mode is used.

9

LVRT mode

Sets LVRT mode. The options are Zero-current mode, Constant current mode, Reactive power priority mode, and Active power priority mode.

10

LVRT characteristic Specifies the low voltage ride-

curve

through capability of the device.

Issue 10 (2023-11-20)

89

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

7 Man-Machine Interactions

No. Parameter

Description

Remarks

11

RCD enhancement RCD refers to the residual current –

of the inverter to the ground. To

ensure device and personal safety,

RCD should be limited to the

specified value in the standard. If

an AC switch with a residual

current detection function is

installed outside the inverter, this

function should be enabled to

reduce the residual current

generated when the inverter is

running, thereby preventing the

AC switch from misoperations.

12

PID protection at When the inverter outputs

–

night

reactive power at night and this

parameter is set to Enable, the

inverter will shut down

automatically if it detects

abnormal status of the PID

compensation.

13

HVRT

HVRT is short for high voltage

–

ride-through. When the grid

voltage is abnormally high for a

short time, the inverter cannot

disconnect from the power grid

immediately and has to work for

some time.

14

HVRT triggering

Specifies the threshold for

This parameter is displayed

threshold (V)

triggering HVRT. The threshold

when HVRT is set to Enable.

settings should meet the local

grid standard.

15

HVRT gradient K1 During HVRT, the solar inverter

needs to generate positive-

sequence reactive power to

support the power grid. This

parameter is used to set the

positive-sequence reactive power

generated by the solar inverter.

For example, if you set HVRT gradient K1 to 2, the increment of positive- sequence reactive current generated by the solar inverter is 20% of the rated current when the AC voltage increases by 10% during HVRT.

Issue 10 (2023-11-20)

90

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

7 Man-Machine Interactions

No. Parameter

Description

Remarks

16

HVRT gradient K2 During HVRT, the solar inverter

needs to generate negative-

sequence reactive power to

support the power grid. This

parameter is used to set the

negative-sequence reactive power

generated by the solar inverter.

For example, if you set HVRT gradient K2 to 2, the increment of negative- sequence reactive current generated by the solar inverter is 20% of the rated current when the AC voltage increases by 10% during HVRT.

17

Grid voltage

Specifies whether to shield the

This parameter is displayed

protection shield undervoltage protection function when LVRT or HVRT is set to

during VRT

during LVRT or HVRT.

Enable.

18

VRT exit hysteresis Specifies the LVRT/HVRT recovery This parameter is displayed

threshold

threshold.

when LVRT or HVRT is set

to Enable.

LVRT recovery threshold = Threshold for triggering LVRT + VRT exit hysteresis threshold

HVRT recovery threshold = Threshold for triggering HVRT – VRT exit hysteresis threshold

19

Zero current due to Certain countries and regions

This parameter is displayed

power grid fault

have requirements on the output when LVRT or HVRT is set to

current during high/low voltage Enable.

ride-through. In this case, set this

parameter to Enable. After this

parameter is set to Enable, the

output current is less than 10% of

the rated current during high/low

voltage ride-through.

20

Power quality

If this parameter is set to Enable, –

optimization mode the inverter output current

harmonics will be optimized.

Issue 10 (2023-11-20)

91

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

7 Man-Machine Interactions

No. Parameter

Description

Remarks

21

PV module type

This parameter is used to set

If this parameter is set to

different types of PV modules and Crystalline silicon or Film,

the shutdown time of the

the inverter automatically

concentration PV module. If the

detects the power of PV

concentration PV modules are

modules when they are

shaded, the power drops

shaded and shuts down if

drastically to 0 and the inverter

the power is too low.

shuts down. The energy yield would be affected since it takes too long for the power to resume and inverter to restart. The parameter does not need to be set for crystalline silicon and filmy PV modules.

When concentration PV modules are used:
If this parameter is set to CPV 1, the inverter can quickly restart in 60 minutes if the input power of PV modules

drops drastically due to

shading.

If this parameter is set to CPV 2, the inverter can quickly restart in 10 minutes if the input power of PV modules drops drastically due to shading.

22

PID compensation When the external PID module

–

direction

compensates the PID voltage for

the PV system, set Built-in PID

compensation direction to the

actual compensation direction of

the PID module so that the

inverter can output reactive

power at night.

23

String connection Specifies the connection mode of When PV strings connect to

mode

PV strings.

the inverter separately (All

PV strings separated), there

is no need to set this

parameter. The inverter can

automatically detect the

connection mode of the PV

strings.

When PV strings connect to one another in parallel outside the inverter and then connect to it independently (All PV strings connected), set this parameter to All PV strings connected.

Issue 10 (2023-11-20)

92

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

7 Man-Machine Interactions

No. Parameter

Description

Remarks

24

Communication

The standards of certain countries If Communication

interrupted

and regions require that the

interrupted shutdown is set

shutdown

inverter must shut down after the to Enable and the inverter

communication is interrupted for communication is interrupted

a certain time.

for a specified time (set by

Communication interruption

duration), the inverter will

automatically shut down.

25

Communication

If this parameter is set to Enable, This parameter is displayed

resumed startup the inverter automatically starts when Communication

after communication recovers. If interrupted shutdown is set

this parameter is set to Disable, to Enable.

the inverter needs to be started

manually after communication

recovers.

26

Communication

Specifies the duration for

–

interruption

determining communication

duration (min)

interruption. Used for automatic

shutdown for protection in case

of communication interruption.

27

Soft start time (s) Specifies the duration for the

–

power to gradually increase when

the inverter starts.

28

Shutdown gradient Specifies the power change speed –

(%/s)

when the inverter shuts down.

29

Soft start time

Specifies the time for the power –

after grid failure to gradually increase when the

(s)

inverter restarts after the power

grid recovers.

30

Hibernation night The inverter monitors PV strings –

at night. If this parameter is set to

Enable, the monitoring function

of the inverter will hibernate at

night to reduce power

consumption.

31

MBUS

For inverters that support RS485 –

communication

communication and MBUS

communication, you are advised

to set this parameter to Disable

to reduce power consumption.

Issue 10 (2023-11-20)

93

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

7 Man-Machine Interactions

No. Parameter

Description

Remarks

32

Upgrade delay

This parameter is mainly used in the upgrade scenarios where the PV power supply is disconnected at night due to no sunlight or unstable at dawn or dusk due to poor sunlight.

After the inverter starts to upgrade, if Upgrade delay is set to Enable, the upgrade package is loaded first. After the PV power supply recovers and the activation conditions are met, the inverter automatically activates the upgrade.

33

RS485-2

If this parameter is set to Enable, –

communication

the RS485-2 port can be used. If

the port is not used, you are

advised to set this parameter to

Disable to reduce power

consumption.

34

String monitor

The inverter monitors PV strings in real time. If any PV string is abnormal (such as the PV string is shaded or the electric energy yield decreases), the inverter generates an alarm to remind maintenance personnel to maintain the PV string in a timely manner.

If PV strings are often shaded, you are advised to set String monitor to Disable to prevent false alarms.

35

Tracker controller Selects a controller vendor.

–

36

String detection

Specifies the threshold for

This parameter is displayed

reference

determining PV string exception. when String monitor is set to

asymmetric

The false alarms caused by fixed Enable.

coefficient

shadow shading can be controlled

by changing this parameter.

37

String detection

Specifies the threshold for

starting power

starting PV string exception

percentage (%)

detection. The false alarms

caused by fixed shadow shading

can be controlled by changing

this parameter.

38

Quick startup for Specifies whether to allow the

–

short-time grid

device to quickly start after the

disconnection

power grid recovers from a short-

time failure.

Issue 10 (2023-11-20)

94

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

7 Man-Machine Interactions

No. Parameter

Description

Remarks

39

Duration for

The standards of certain countries

determining short- and regions require that the

time grid

inverter should not disconnect

disconnection (ms) from the power grid if the power grid experiences a short- time

–

failure. After the fault is rectified,

the inverter output power needs

to be quickly restored.

40

Output impedance After Output impedance

–

enhancement

enhancement is enabled, you can

set Frequency to which output

impedance enhancement

applies to increase the output

impedance at this frequency.

41

Frequency to which Specifies the frequency to which This parameter is displayed

output impedance output impedance enhancement when Output impedance

enhancement

applies.

enhancement is set to Enable.

applies (Hz)

42

Auto recovery from If this parameter is set to

–

string-to-ground

Enable, the String Short-

short-circuit

Circuited to Ground alarm is

protection

automatically cleared after

fault recovery.

If this parameter is set to Disable, the String ShortCircuited to Ground alarm cannot be automatically cleared. You need to manually clear the alarm.

7.1.4.4 Setting Power Adjustment Parameters
Choose Settings > Power adjustment to go to the parameter setting screen.

No. Parameter

1

Remote power

schedule

2

Schedule

instruction valid

duration (s)

Description

Remarks

If this parameter is set to Enable, the inverter responds to the scheduling instruction from the remote port. If this parameter is set to Disable, the inverter does not respond to the scheduling instruction from the remote port.

Specifies the time for maintaining When this parameter is set to

the scheduling instruction.

0, the scheduling instruction

takes effect permanently.

Issue 10 (2023-11-20)

95

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

7 Man-Machine Interactions

No. Parameter

Description

Remarks

3

Maximum apparent Specifies the output upper

If the maximum active power

power (kVA)

threshold for the maximum

equals the value of

apparent power to adapt to the Smax_limit, this parameter is

capacity requirements of standard not displayed.

and customized inverters.

4

Maximum active Specifies the output upper

–

power (kW)

threshold for the maximum active

power to adapt to different

market requirements.

5

Shutdown at 0% If this parameter is set to Enable, –

power limit

the inverter shuts down after

receiving the 0% power limit

command. If this parameter is set

to Disable, the inverter does not

shut down after receiving the 0%

power limit command.

6

Active power

Specifies the change speed of the –

change gradient

inverter active power.

(%/s)

7

Derated by active Adjusts the active power output If this parameter is set to 100,

power % (0.1%)

of the inverter by percentage.

the inverter outputs based on

the maximum output power.

8

Active power

Adjusts the active power output –

derating in

of the inverter by fixed value.

absolute power

(kW)

9

Reactive power

Specifies the change speed of the –

change gradient

inverter reactive power.

(%/s)

10

Reactive power

Specifies the adjustment time for –

adjustment time

the reactive power to reach the

(s)

target value during reactive

power adjustment.

11

Power factor

Specifies the power factor of the inverter.

12

Reactive power

Specifies the reactive power

–

compensation

output by the inverter.

(Q/S)

Issue 10 (2023-11-20)

96

SUN2000-(100KTL, 110KTL, 115KTL)-M2 User Manual

7 Man-Machine Interactions

No. Parameter

Description

Remarks

13

Overfrequency

derating

If this parameter is set to Enable, the active power of the inverter will be derated according to a certain slope when the grid frequency exceeds the frequency that triggers overfrequency derating.

14

Trigger frequency The standards of certain countries This parameter is displayed

of overfrequency and regions require that the

when Overfrequency

derating (Hz)

output active power of inverters

derating is set to Enable.

be derated when the power grid When setting this

frequency exceeds a certain value.

parameter, ensure that the

15

Quit frequency of Specifies the frequency threshold