HUAWEI SUN2000-20KTL, SUN2000-29.9KTL, SUN2000- 30KTL, SUN2000- 36KTL, SUN2000- 40KTL User Manual

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SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3

User Manual

Issue 01

Date 2020-10-15

HUAWEI TECHNOLOGIES CO., LTD.

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 specied 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 eort 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

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual About this Document

About this Document

Overview

This document describes the SUN2000-20KTL-M3, SUN2000-29.9KTL-M3, SUN2000-30KTL-M3, SUN2000-36KTL-M3, and SUN2000-40KTL-M3 (SUN2000 for short) in terms of their installation, electrical connections, commissioning, maintenance, and troubleshooting. Before installing and operating the SUN2000, ensure that you are familiar with the features, functions, and safety precautions provided in this document.

Intended Audience

This document is applicable to:

● Installers

● Users

Symbol Conventions

The symbols that may be found in this document are

Symbol

dened as follows.

Remarks

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.

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual About this Document

Symbol Remarks

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.

Change History

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

Issue 01 (2020-10-15)

This issue is the rst ocial release.

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual Contents

About this Document................................................................................................................. ii

1 Safety Information.................................................................................................................. 1

1.1 General Safety.......................................................................................................................................................................... 1

1.2 Personnel Requirements....................................................................................................................................................... 2

1.3 Electrical Safety........................................................................................................................................................................3

1.4 Installation Environment Requirements.......................................................................................................................... 4

1.5 Mechanical Safety................................................................................................................................................................... 4

1.6 Commissioning......................................................................................................................................................................... 5

1.7 Maintenance and Replacement..........................................................................................................................................6

2 Overview....................................................................................................................................7

2.1 Overview.................................................................................................................................................................................... 7

2.2 Appearance................................................................................................................................................................................9

2.3 Label Description.................................................................................................................................................................. 10

2.4 Working Principles................................................................................................................................................................ 12

2.4.1 Circuit Diagram.................................................................................................................................................................. 12

2.4.2 Working Modes.................................................................................................................................................................. 13

3 SUN2000 Storage...................................................................................................................15

4 Installation..............................................................................................................................16

4.1 Checking Before Installation............................................................................................................................................. 16

4.2 Tool Preparation.................................................................................................................................................................... 17

4.3 Selecting an Installation Position.................................................................................................................................... 18

4.4 Moving the SUN2000.......................................................................................................................................................... 21

4.5 Installing the Mounting Bracket...................................................................................................................................... 22

4.5.1 Support-mounted Installation.......................................................................................................................................23

4.5.2 Wall-mounted Installation............................................................................................................................................. 24

4.6 Installing a SUN2000........................................................................................................................................................... 25

5 Electrical Connections.......................................................................................................... 27

5.1 Precautions.............................................................................................................................................................................. 27

5.2 Preparing Cables................................................................................................................................................................... 28

5.3 Connecting the PE Cable.................................................................................................................................................... 30

5.4 Connecting the AC Output Power Cable...................................................................................................................... 32

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual Contents

5.5 Installing the DC Input Power Cable.............................................................................................................................. 34

5.6 (Optional) Installing the Smart Dongle........................................................................................................................ 37

5.7 Connecting the Signal Cable............................................................................................................................................. 39

5.7.1 Communication Modes................................................................................................................................................... 41

5.7.2 (Optional) Connecting the RS485 Communications Cable to the SUN2000............................................... 42

5.7.3 (Optional) Connecting the RS485 Communications Cable to the Power Meter.........................................43

5.7.4 (Optional) Connecting the Power Grid Scheduling Signal Cable..................................................................... 44

5.7.5 (Optional) Connecting the Rapid Shutdown Signal Cable................................................................................. 45

6 Commissioning.......................................................................................................................47

6.1 Checking Before Power-On................................................................................................................................................47

6.2 System Power-On................................................................................................................................................................. 48

7 Man-Machine Interaction....................................................................................................50

7.1 Scenario in Which SUN2000s Are Connected to the FusionSolar Smart PV Management System.........51

7.1.1 (Optional) Registering an Installer Account............................................................................................................ 51

7.1.2 Creating a PV Plant and a User.................................................................................................................................... 52

7.1.3 SmartLogger Networking Scenario............................................................................................................................. 52

7.2 Scenario in Which SUN2000s Are Connected to Other Management Systems..............................................53

8 Maintenance...........................................................................................................................54

8.1 System Power-O.................................................................................................................................................................54

8.2 Routine Maintenance.......................................................................................................................................................... 55

8.3 Troubleshooting..................................................................................................................................................................... 55

9 Handling the Inverter...........................................................................................................66

9.1 Removing the SUN2000..................................................................................................................................................... 66

9.2 Packing the SUN2000..........................................................................................................................................................66

9.3 Disposing of the SUN2000................................................................................................................................................ 66

10 Technical

Specications.....................................................................................................67

A Grid Code................................................................................................................................ 73

B Device Commissioning......................................................................................................... 76

C Setting Power Adjustment Parameters........................................................................... 79

D Built-in PID Recovery........................................................................................................... 80

E Rapid Shutdown.................................................................................................................... 82

F Resetting Password...............................................................................................................83

G Setting Dry Contact Scheduling Parameters..................................................................84

H AFCI.......................................................................................................................................... 85

I Smart I-V Curve Diagnosis....................................................................................................88

J Acronyms and Abbreviations...............................................................................................89

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 1 Safety Information

1 Safety Information

1.1 General Safety

Statement

Before installing, operating, and maintaining the equipment, read this document and observe all the safety instructions on the equipment and in this document.

The "NOTICE", "CAUTION", "WARNING", and "DANGER" statements in this document do not cover all the safety instructions. They are only supplements to the safety instructions. Huawei will not be liable for any consequence caused by the violation of general safety requirements or design, production, and usage safety standards.

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

Follow local laws and regulations when installing, operating, or maintaining the equipment. The safety instructions in this document are only supplements to local laws and regulations.

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

● Operation beyond the conditions

● Installation or use in environments which are not international or national standards

● Unauthorized modications to the product or software code or removal of the product

● Failure to follow the operation instructions and safety precautions on the product and in this document

● Equipment damage due to force majeure, such as earthquakes, re, and storms

● Damage caused during transportation by the customer

● Storage conditions that do not meet the requirements specied in this document

specied in this document

specied in relevant

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SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 1 Safety Information

General Requirements

Do not work with power on during installation.

● 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, and performing outdoor installation) in harsh weather conditions such as lightning, rain, snow, and level 6 or stronger wind.

● After installing the equipment, remove idle packing materials such as cartons, foam, plastics, and cable ties from the equipment area.

● In the case of a

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

● Tighten the screws using tools when installing the equipment.

● Understand the components and functioning of a grid-tied PV power system

● Repaint any paint scratches caused during equipment transportation or

● Do not open the host panel of the equipment.

Personal Safety

● If there is a probability of personal injury or equipment damage during

● Use tools correctly to avoid hurting people or damaging the equipment.

● Do not touch the energized equipment, as the enclosure is hot.

re, immediately leave the building or the equipment area, and turn on the re alarm bell or make an emergency call. Do not enter the building on

and relevant local standards.

installation in a timely manner. Equipment with scratches cannot be exposed to an outdoor environment for a long period of time.

operations on the equipment, immediately stop the operations, report the case to the supervisor, and take feasible protective measures.

re in any case.

1.2 Personnel Requirements

● Personnel who plan to install or maintain Huawei equipment must receive thorough training, understand all necessary safety precautions, and be able to correctly perform all operations.

● Only

● Personnel who will operate the equipment, including operators, trained

qualied professionals or trained personnel are allowed to install,

operate, and maintain the equipment.

qualied professionals are allowed to remove safety facilities and inspect

the equipment.

personnel, and professionals, should possess the local national required qualications in special operations such as high-voltage operations, working at heights, and operations of special equipment.

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SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 1 Safety Information

● Only professionals or authorized personnel are allowed to replace the equipment or components (including software).

● Professionals: personnel who are trained or experienced in equipment operations and are clear of the sources and degree of various potential hazards in equipment installation, operation, and maintenance

● Trained personnel: personnel who are technically trained, 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

● Operators: operation personnel who may come in contact with the equipment, except trained personnel and professionals

1.3 Electrical Safety

Grounding

● For the equipment that needs to be grounded, install the ground cable rst when installing the equipment and remove the ground cable last when removing the equipment.

● Do not damage the ground conductor.

● Do not operate the equipment in the absence of a properly installed ground conductor.

● Ensure that the equipment is connected permanently to the protective ground. Before operating the equipment, check its electrical connection to ensure that it is securely grounded.

General Requirements

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

● Ensure that all electrical connections comply with local electrical standards.

● Obtain approval from the local electric utility company before using the equipment in grid-tied mode.

● Ensure that the cables you prepared meet local regulations.

● Use dedicated insulated tools when performing high-voltage operations.

AC and DC Power

Do not connect or disconnect power cables with power on. Transient contact between the core of the power cable and the conductor will generate electric arcs or sparks, which may cause

re or personal injury.

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 1 Safety Information

● Before making electrical connections, switch o the disconnector on the upstream device to cut o the power supply if people may contact energized components.

● Before connecting a power cable, check that the label on the power cable is correct.

● If the equipment has multiple inputs, disconnect all the inputs before operating the equipment.

Cabling

● When routing cables, ensure that a distance of at least 30 mm exists between the cables and heat-generating components or areas. This prevents damage to the insulation layer of the cables.

● Bind cables of the same type together. When routing cables of ensure that they are at least 30 mm away from each other.

● Ensure that the cables used in a grid-tied PV power system are properly connected and insulated and meet

specications.

dierent types,

1.4 Installation Environment Requirements

● Ensure that the equipment is installed in a well ventilated environment.

● To prevent heat dissipation system are not blocked when the equipment is running.

● Do not expose the equipment to not perform any operation on the equipment in such environments.

re due to high temperature, ensure that the ventilation vents or

ammable or explosive gas or smoke. Do

1.5 Mechanical Safety

Using Ladders

● Use wooden or heights.

● When a step ladder is used, ensure that the pull ropes are secured and the ladder is held

● Before using a ladder, check that it is intact and conrm its load bearing capacity. Do not overload it.

● Ensure that the wider end of the ladder is at the bottom, or protective measures have been taken at the bottom to prevent the ladder from sliding.

● Ensure that the ladder is securely positioned. The recommended angle for a ladder against the angle rule can be used to measure the angle.

berglass ladders when you need to perform live working at

rm.

oor is 75 degrees, as shown in the following gure. An

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 1 Safety Information

● When climbing a ladder, take the following precautions to reduce risks and ensure safety:

– Keep your body steady.

– Do not climb higher than the fourth rung of the ladder from the top.

– Ensure that your body's center of gravity does not shift outside the legs

of the ladder.

Drilling Holes

When drilling holes into a wall or

● Wear goggles and protective gloves when drilling holes.

● When drilling holes, protect the equipment from shavings. After drilling, clean up any shavings that have accumulated inside or outside the equipment.

Moving Heavy Objects

● Be cautious to avoid injury when moving heavy objects.

● When moving the equipment by hand, wear protective gloves to prevent injuries.

1.6 Commissioning

When the equipment is powered on for the personnel set parameters correctly. Incorrect settings may result in inconsistency with local

certication and aect the normal operation of the equipment.

oor, observe the following safety precautions:

rst time, ensure that professional

D ANGER

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 1 Safety Information

1.7 Maintenance and Replacement

High voltage generated by the equipment during operation may cause an electric shock, which could result in death, serious injury, or serious property damage. Prior to maintenance, power precautions in this document and relevant documents.

● Maintain the equipment with sucient knowledge of this document and using proper tools and testing equipment.

● Before maintaining the equipment, power it o and follow the instructions on the delayed discharge label to ensure that the equipment is powered

● Place temporary warning signs or erect fences to prevent unauthorized access to the maintenance site.

● If the equipment is faulty, contact your dealer.

● The equipment can be powered on only after all faults are do so may escalate faults or damage the equipment.

o the equipment and strictly comply with the safety

o.

rectied. Failing to

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SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 2 Overview

2 Overview

2.1 Overview

Function

Model

The SUN2000 inverter is a three-phase grid-tied PV string inverter that converts the DC power generated by PV strings into AC power and feeds the power into the power grid.

This document covers the following SUN2000 models:

● SUN2000-20KTL-M3

● SUN2000-29.9KTL-M3

● SUN2000-30KTL-M3

● SUN2000-36KTL-M3

● SUN2000-40KTL-M3

The SUN2000-20KTL-M3 supports 220 V (line voltage) power grids.

Figure 2-1 Model description (SUN2000-30KTL-M3 is used as an example)

Table 2-1 Model description

1 Series name SUN2000: three-phase grid-tied PV string

Meaning Value

inverter

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 2 Overview

ID Meaning Value

2 Power class ● 20K: rated power of 20 kW

● 29.9K: rated power of 29.9 kW

● 30K: rated power of 30 kW

● 36K: rated power of 36 kW

● 40K: rated power of 40 kW

3 Topology TL: transformerless

4 Product code M3: product series with an input voltage level

of 1100 V DC

Networking Application

The SUN2000 applies to the grid-tied systems of industrial and commercial rooftops and small ground PV plants. Typically, a grid-tied system consists of PV strings, grid-tied inverters, AC switches, and power distribution units.

Figure 2-2 Networking application - single inverter scenario

(1) PV string

(4) Isolation transformer (5) Power grid

Supported Power Grid Types

The SUN2000 supports TN-S, TN-C, TN-C-S, TT, and IT power grids.

(2) SUN2000 (3) AC power distribution

unit

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 2 Overview

Figure 2-3 Power grid types

2.2 Appearance

Figure 2-4 Appearance

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 2 Overview

(1) LED indicator (2) Front panel

(3) Heat sink (4) Screws for xing the awning

(5) Communications port (COM) (6) Hole for the DC switch locking

screw

(7) DC switch (DC SWITCH) (8) Smart Dongle port (4G/WLAN-FE)

(9) Ventilation valve (10) DC input terminals (PV1–PV8)

(11) AC output port (12) Ground point

2.3 Label Description

Nameplate

Figure 2-5 Nameplate

(1) Trademark and product model (2) Key technical parameters

(3) Label information (4) Company name and country of

origin

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SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 2 Overview

The nameplate gure is for reference only.

Enclosure Labels

Symbol Name Description

Delay discharge Residual voltage exists

after the SUN2000 is powered o. It takes 5 minutes for the SUN2000 to discharge to the safe voltage.

Burn warning Do not touch a

running SUN2000 because it generates high temperatures on the shell.

Electric shock warning ● High voltage exists

after the SUN2000 is powered on. Only qualied and trained electrical technicians are allowed to perform operations on the SUN2000.

● High touch current exists after the SUN2000 is powered on. Before powering on the SUN2000, ensure that the SUN2000 is properly grounded.

Refer to documentation

Reminds operators to refer to the documents delivered with the SUN2000.

Grounding label Indicates the position

for connecting the PE cable.

Operation warning Do not remove the DC

input connector or AC output connector with power on.

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 2 Overview

Symbol Name Description

Weight label The SUN2000 is heavy

and needs to be carried by three persons.

Indicator Indicates the SUN2000

operating information.

2.4 Working Principles

2.4.1 Circuit Diagram

A SUN2000 can connect to a maximum of eight PV strings and has four MPPT circuits inside. Each MPPT circuit tracks the maximum power point of two PV strings. The SUN2000 converts DC power into single-phase AC power through an inverter circuit. Surge protection is supported on both the DC and AC sides.

SUN2000 serial number

SUN2000 WiFi login QR code

Indicates the serial number.

Scan the QR code to connect to the Huawei SUN2000 WiFi network.

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 2 Overview

Figure 2-6 Schematic diagram

2.4.2 Working Modes

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

Figure 2-7 Working modes

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 2 Overview

Table 2-2 Working mode description

Working

Description

Mode

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 rectied.

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 3 SUN2000 Storage

3 SUN2000 Storage

The following requirements should be met if the SUN2000 is not put into use directly:

● Do not unpack the SUN2000.

● Keep the storage temperature at –40°C to +70°C and the humidity at 5%– 95% RH.

● Store the SUN2000 in a clean and dry place and protect it from dust and water vapor corrosion.

● A maximum of six SUN2000s can be stacked. To avoid personal injury or device damage, stack SUN2000s with caution to prevent them from falling over.

● During the storage period, check the SUN2000 periodically (recommended: every three months). If any rodent bites are found on the packing materials, replace the packing materials immediately.

● If the SUN2000 has been stored for more than two years, it must be checked and tested by professionals before being put into use.

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SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 4 Installation

4 Installation

4.1 Checking Before Installation

Outer Packing Materials

Before unpacking the inverter, check the outer packing materials for damage, such as holes and cracks, and check the inverter model. If any damage is found or the inverter model is not what you requested, do not unpack the package and contact your supplier as soon as possible.

You are advised to remove the packing materials within 24 hours before installing the inverter.

Package Contents

After unpacking the inverter, check that the contents are intact and complete. If any damage is found or any component is missing, contact your supplier.

For details about the number of contents, see the

Packing List

in the packing case.

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 4 Installation

4.2 Tool Preparation

Type Tools and Instruments

Install ation

Hammer drill (with a Ф14 mm drill bit and a Ф16 mm drill bit)

Diagonal pliers Wire stripper Torque screwdriver

Rubber mallet Utility knife Cable cutter

Torque socket and wrench Torque wrench

Crimping tool (model: PV-CZM-22100)

Vacuum cleaner Multimeter (DC voltage

Open-end wrench (model: PV-MS-HZ or PV-MS openend wrench)

measurement range ≥ 1100 V DC)

Cable tie

Marker

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 4 Installation

Type Tools and Instruments

Steel measuring tape Level Hydraulic pliers

Heat shrink tubing Heat gun

Person al protec tive equip ment (PPE)

Safety gloves Safety goggles Anti-dust mask

- -

Safety boots

4.3 Selecting an Installation Position

Basic Requirements

● The SUN2000 is IP66-rated and can be installed indoors or outdoors.

● Do not install the SUN2000 in a place where a person can easily be exposed to its enclosure and heat sinks, because these parts are extremely hot during operation.

● Do not install the SUN2000 in areas with ammable or explosive materials.

● Do not install the SUN2000 in a place within children's reach.

● The SUN2000 will be corroded in salt areas, and the salt corrosion may cause re. Do not install the SUN2000 outdoors in salt areas. A salt area refers to the region within 500 m from the coast or prone to sea breeze. The eect from sea breeze depends on weather conditions (such as typhoon and season wind) or terrains (such as dams and hills).

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 4 Installation

Site Requirements

● The SUN2000 should be installed in a well-ventilated environment to ensure good heat dissipation.

● If the SUN2000 is installed in a place exposed to direct sunlight, the power may decrease as the temperature rises.

● You are advised to install the SUN2000 in a sheltered place or install an awning over it.

Mounting Structure Requirements

● The mounting structure where the SUN2000 is installed must be

● Do not install the SUN2000 on ammable building materials.

● The SUN2000 is heavy. Ensure that the installation surface is solid enough to bear the weight load.

● In residential areas, do not install the SUN2000 on drywalls or walls made of similar materials which have a weak sound insulation performance because the noise generated by the SUN2000 is noticeable.

Installation Angle Requirements

The SUN2000 can be wall-mounted or support-mounted. Requirements for the installation angle:

● Install the SUN2000 vertically or at a maximum back tilt of 15 degrees to facilitate heat dissipation.

● Do not install the SUN2000 with a front tilt, excessive back tilt, side tilt, horizontally, or upside down.

Figure 4-1 Installation angle

re resistant.

Installation Space Requirements

● Reserve enough clearance around the SUN2000 to ensure installation and heat dissipation.

sucient space for

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 4 Installation

Figure 4-2 Installation space

● When installing multiple SUN2000s, install them in horizontal mode if ample space is available and install them in triangle mode if no ample space is available. Stacked installation is not recommended.

Figure 4-3 Horizontal installation (recommended)

Figure 4-4 Two-layer triangle installation (recommended)

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SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 4 Installation

Figure 4-5 Three-layer triangle installation (not recommended)

Figure 4-6 Stacked installation (not recommended)

The installation diagrams are for reference only and are irrelevant to the SUN2000 cascading scenario.

4.4 Moving the SUN2000

Procedure

Step 1 Lift the SUN2000 from the packing case and move it to the specied installation

position.

CA UTION

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 4 Installation

● Move the SUN2000 with care to prevent device damage and personal injury.

● Do not use the wiring terminals and ports at the bottom to support any weight

of the SUN2000.

● Place a foam pad or cardboard under the SUN2000 to protect the SUN2000

enclosure from damage.

Figure 4-7 Moving the SUN2000

----End

4.5 Installing the Mounting Bracket

Installation Precautions

Before installing the mounting bracket, remove the security Torx wrench and set it aside.

Figure 4-8 Position for binding the security Torx wrench

(1) Security Torx wrench

Figure 4-9 shows the dimensions of the mounting holes for the SUN2000.

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SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 4 Installation

Figure 4-9 Mounting bracket dimensions

4.5.1 Support-mounted Installation

Procedure

Step 1 Secure the mounting bracket.

Figure 4-10 Securing the mounting bracket

You are advised to apply anti-rust paint on the hole positions for protection.

----End

D ANGER

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SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 4 Installation

4.5.2 Wall-mounted Installation

Prerequisites

To install the SUN2000, you need to prepare expansion bolts. M12x60 stainless steel expansion bolts are recommended.

Procedure

Step 1 Determine the positions for drilling holes and mark the positions using a marker.

Step 2 Secure the mounting bracket.

Avoid drilling holes in the water pipes and cables buried in the wall.

Figure 4-11 Expansion bolt composition

(1) Bolt (2) Nut (3) Spring washer

(4) Flat washer (5) Expansion sleeve

● To prevent dust inhalation or contact with eyes, wear safety goggles and an

anti-dust mask 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 holes again.

● Level the front of the expansion sleeve with the concrete wall after removing

the bolt, spring washer, and not be securely installed on the concrete wall.

at washer. Otherwise, the mounting bracket will

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SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 4 Installation

Figure 4-12 Installing expansion bolts

----End

4.6 Installing a SUN2000

Step 1 (Optional) Install the locking screw for the DC switch.

● The DC switch locking screw is used to lock the DC switch to prevent the switch from rotating.

● For models used in Australia, install the DC switch locking screw according to local standards. The DC switch locking screw is delivered with the SUN2000.

Figure 4-13 Installing the locking screw for the DC switch

Step 2 Install the SUN2000 onto the mounting bracket.

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Figure 4-14 Installing a SUN2000

Step 3 Tighten the nuts on both sides of the SUN2000.

Figure 4-15 Tightening the nut

Secure the screws on the sides before connecting cables.

----End

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WARNING

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SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 5 Electrical Connections

5 Electrical Connections

5.1 Precautions

When exposed to sunlight, the PV arrays supplies DC voltage to the SUN2000. Before connecting cables, ensure that the two DC switches on the SUN2000 are OFF. Otherwise, the high voltage of the SUN2000 may result in electric shocks.

● The equipment damage caused by incorrect cable connections is beyond the warranty scope.

● Only certied electrician can perform electrical terminations.

● Wear proper PPE at all time when terminating cables.

● To prevent poor cable connection due to overstress, it is recommended that the cables be bent and reserved, and then connected to the appropriate ports.

The cable colors shown in the electrical connection diagrams provided in this chapter are for reference only. Select cables in accordance with local cable specications (green-andyellow cables are only used for grounding).

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 5 Electrical Connections

5.2 Preparing Cables

Figure 5-1 SUN2000 cable connections (dashed boxes indicate optional

components)

Table 5-1 Components

No.

A PV string ● A PV string consists of PV

B AC switch Recommended: a three-phase AC

C Power

ComponentDescription Source

modules connected in series.

● The SUN2000 supports the input from eight PV strings.

circuit breaker with a rated voltage greater than or equal to 500 V AC and a rated current of:

● 80 A (SUN2000-20KTL/29.9KTL/ 30KTL-M3)

● 100 A (SUN2000-36KTL/40KTLM3)

The SUN2000 can connect to the

meter

DTSU666-H power meter.

Prepared by users

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No. ComponentDescription Source

The following third-party power meters are supported:

ABB-A44, Schneider-PM1200, Janitza-UMG604, Janitza-UMG103CBM, Janitza-UMG104, GAVAZZIEM340-DIN AV2 3 X S1 X, REAL ENERGY SYSTEM-PRISMA-310A, Algodue-UPM209, MitsubishiLMS-0441E, and WEG-MMW03M22CH

When the WEG-MMW03-M22CH power meter is connected, set Baud rate to 9600.When the MitsubishiLMS-0441E power meter is connected, set Parity mode to No parity, and Baud rate to 9600.

D SUN2000 Select a proper model as required. Purchased from

Huawei

E SmartLoggerThe SmartLogger1000A,

SmartLogger2000, and

Purchased from Huawei

SmartLogger3000 are supported.

F Smart

Dongle

Select a proper model as required. Purchased from

Huawei

In the SUN2000 cascading scenario, the master inverter model can be SUN2000-20KTL/29.9KTL/ 30KTL/36KTL/40KTL-M3, and the slave inverter model can be SUN2000-(3KTL-12KTL)-M0/M1, SUN2000-(12KTL-20KTL)-M0/M2, SUN2000-50KTL/60KTL/65KTL-M0, SUN2000-(100KTL, 110KTL, 125KTL) series, SUN2000-29.9KTL/36KTL/42KTL, or SUN2000-33KTL-A.

The cable specications must comply with local standards.

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SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 5 Electrical Connections

Table 5-2 Cable description

No. Cable Type Recommended

Specications

1 DC input

power cable

Common PV cable in the industry

(Recommended model: PV1-F)

● Conductor crosssectional area: 4–6

● Cable outer diameter: 4.5–7.8 mm

2 AC

output power cable

Outdoor copper-core/ aluminum-core cable

● Conductor crosssectional area:

16-50 mm

outdoor coppercore cable or 35-50

mm2 outdoor aluminum-core cable

● Cable outer diameter: 16–38 mm

3 (Option

al) Signal cable

Two-core outdoor shielded twisted pair (recommended model: DJYP2VP2-2x2x0.75)

● Conductor crosssectional area: 0.2–

1 mm

● Cable outer diameter: 4–11 mm

Source

Prepare d by users

4 PE cable Single-core outdoor

copper-core cable

Note a: Five-core cables with a cross-sectional area of 5 x 35 mm2 or 5 x 50 mm2 are not supported.

5.3 Connecting the PE Cable

● Ensure that the PE cable is securely connected. Otherwise, electric shocks may occur.

● Do not connect the neutral wire to the enclosure as a PE cable. Otherwise, electric shocks may occur.

Conductor crosssectional area ≥ 16

Prepare d by users

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● The PE point at the AC output port is used only as a PE equipotential point, not a substitute for the PE point on the enclosure.

● It is recommended that silica gel or paint be applied around the ground terminal after the PE cable is connected.

Procedure

Step 1 Crimp OT terminals.

● Avoid scratching the core wire when stripping a cable.

● The cavity formed after the conductor crimp strip of the OT terminal is crimped must wrap the core wires completely. The core wires must contact the OT terminal closely.

● Wrap the wire crimping area with heat shrink tubing or PVC insulation tape. The heat shrink tubing is used as an example.

● When using a heat gun, protect devices from being scorched.

Figure 5-2 Crimping an OT terminal

(1) Cable

(2) Core (3) Heat shrink tubing

(4) OT terminal (5) Crimping tool (6) Heat gun

Step 2 Connect the PE cable.

WARNING

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SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 5 Electrical Connections

Figure 5-3 Connecting the PE cable

(1) Standby protection ground point

----End

5.4 Connecting the AC Output Power Cable

Precautions

An AC switch must be installed on the AC side of the SUN2000 to ensure that the SUN2000 can be safely disconnected from the power grid.

Do not connect loads between the SUN2000 and the AC switch.

● Use a socket wrench and extension rod to connect the AC power cable. The extension rod must be longer than 100 mm.

Sucient 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.

● Do not install third-party devices in the AC connection box.

● You need to prepare M8 OT terminals by yourself.

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SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 5 Electrical Connections

Procedure

Step 1 Remove the AC terminal box and install partition boards.

Figure 5-4 Removing the AC terminal box

Step 2 Connect the AC output power cable (using a ve-core cable as an example).

● To avoid damaging the rubber liner, do not route a cable with a crimped OT terminal directly through it.

● It is recommended that the length of the PE cable to be stripped be 15 mm longer than the length of other cables.

● The cable colors in the local standards.

gures are for reference only. Select appropriate cables according to

Figure 5-5 Stripping the AC power cable

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Figure 5-6 Connecting the AC power cable

----End

5.5 Installing the DC Input Power Cable

Precautions

● 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 DC switch on the SUN2000 is OFF. Failing to do so may result in electric shocks.

● When the SUN2000 is running, it is not allowed to work on the DC input power cables, such as connecting or disconnecting a PV string or a PV module in a PV string. Failing to do so may cause electric shocks.

● If no PV string connects to a DC input terminal of the SUN2000, do not remove the watertight cap from the DC input terminals. Otherwise, the IP rating of the SUN2000 will be

aected.

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SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 5 Electrical Connections

Ensure that the following conditions are met. Otherwise, the SUN2000 may be damaged, or even a re could happen.

● PV modules connected in series in each PV string are of the same specications.

● The DC input voltage of the SUN2000-29.9KTL/30KTL/36KTL/40KTL-M3 shall not exceed 1100 V DC under any circumstance.

● The DC input voltage of the SUN2000-20KTL-M3 shall not exceed 800 V DC under any circumstance.

● The polarities of electric connections are correct on the DC input side. The positive and negative terminals of a PV string connect to corresponding positive and negative DC input terminals of the SUN2000.

● If polarity of the DC input power cable is reversed and the DC switch is ON, do not turn

o the DC switch immediately or remove positive and negative connectors. Wait until the solar irradiance declines at night and the PV string current reduces to below 0.5 A, and then turn

o the DC switch and remove the positive and negative connectors. Correct the PV string polarity before reconnecting the PV string to the SUN2000.

● The SUN2000 does not support power supplies other than PV strings. Since the output of the PV string connected to the SUN2000 cannot be grounded, ensure that the PV module output is well insulated to ground.

● During the installation of PV strings and the SUN2000, 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 SUN2000. The caused device damage is not covered under any warranty.

Figure 5-7 DC input terminals

When the DC input is not fully congured, the DC input terminals must meet the following requirements:

1. Distribute the DC input power cables evenly over four MPPT circuits, and

connect them preferentially through MPPT1 and MPPT4.

2. Maximize the number of connected MPPT circuits.

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SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 5 Electrical Connections

Procedure

Step 1 Connect the DC power cable.

Number of PV Strings

Terminal Selection Number

of PV Strings

Terminal Selection

1 PV1 2 PV1 and PV7

3 PV1, PV3 and PV7 4 PV1, PV3, PV5 and PV7

5 PV1, PV2, PV3, PV5 and

PV7

7 PV1, PV2, PV3, PV4, PV5,

PV7 and PV8

6 PV1, PV2, PV3, PV5, PV7

and PV8

8 PV1, PV2, PV3, PV4, PV5,

PV6, PV7 and PV8

Use the positive and negative Staubli MC4 metal terminals and DC connectors supplied with the SUN2000. Using incompatible positive and negative metal terminals and DC connectors may result in serious consequences. The caused device damage is not covered under warranty.

● You are advised to use the PV-CZM-22100 (Staubli) crimping tool and do not use it with the positioning block. Otherwise, the metal terminals may be damaged.

● The PV-MS (Staubli) or PV-MS-HZ (Staubli) open-end wrench is recommended.

● Cables with high rigidity, such as armored cables, are not recommended as DC input power cables, because poor contact may be caused by the bending of the cables.

● Before assembling DC connectors, label the cable polarities correctly to ensure correct cable connections.

● After the positive and negative connectors snap into place, pull the DC input cables back to ensure that they are connected securely.

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Figure 5-8 Connecting the DC power cable

----End

5.6 (Optional) Installing the Smart Dongle

Procedure

● The WLAN-FE Smart Dongle is not provided in standard conguration.

● If your Smart Dongle is a WLAN-FE Smart Dongle or is congured with a SIM card, skip this step. The is a China Mobile card. Before installation, check whether the site is eectively covered by China Mobile signals. If not, prepare a SIM card of other carriers.

● 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.

● 4G Smart Dongle

congured SIM card can be used only on the Smart Dongle. The SIM card

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Figure 5-9 Installing a 4G Smart Dongle

● WLAN-FE Smart Dongle (WLAN Communication)

Figure 5-10 Installing a WLAN-FE Smart Dongle (WLAN communication)

● WLAN-FE Smart Dongle (FE Communication)

Figure 5-11 Installing a WLAN-FE Smart Dongle (FE communication)

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

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SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 5 Electrical Connections

● For details about how to operate the WLAN-FE Smart Dongle SDongleA-05, see

SDongleA-05 Quick Guide (WLAN-FE)

obtain the document.

● For details about how to operate the 4G Smart Dongle SDongleA-03, see

SDongleA-03 Quick Guide (4G)

document.

. You can scan the QR code below to

. You can scan the QR code below to obtain the

The quick guide is delivered with the Smart Dongle.

5.7 Connecting the Signal Cable

COM Port Pin Denitions

When laying out a signal cable, separate it from power cables to avoid strong signal interference.

Figure 5-12 Pin denitions

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SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 5 Electrical Connections

Pin DenitionFunction Description Pin DenitionFunction Description

1 485A1_1 RS485

dierential

signal +

Used for SUN2000 cascading or

2 485A1_2 RS485

connecting to

3 485B1_1 RS485

dierential

signal –

the RS485 signal port on the

4 485B1_2 RS485

SmartLogger

5 PE Ground point

- 6 PE Ground on the shield layer

7 485A2 RS485

dierential

signal +

Connects to the RS485 signal port for

8 DIN1 Dry contact

controlling the

9 485B2 RS485

dierential

signal –

power meter at the grid-tied point.

10 DIN2

11 - - - 12 DIN3

13 GND GND - 14 DIN4

dierential

signal +

dierential

signal –

point on the shield layer

for power grid scheduling

Used for SUN2000 cascading or connecting to the RS485 signal port on the SmartLogger

15 DIN5 Rapid

shutdown

Supports AC NS protection

16 GND

shutdown, which can be used as a reserved port for rapid shutdown signals.

Scenarios Where No Signal Cable Is Connected

If no signal cable is required for the SUN2000, use waterproof plugs to block the wiring holes on the signal cable connector and connect the signal cable connector to the communications port on the SUN2000 to improve the waterproof performance of the SUN2000.

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SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 5 Electrical Connections

Figure 5-13 Securing the signal cable connector

5.7.1 Communication Modes

RS485 Communication

● Smart Dongle networking

Figure 5-14 Smart Dongle networking

If a SUN2000 is networked using a Smart Dongle, it cannot be connected to the SmartLogger.

● SmartLogger networking

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SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 5 Electrical Connections

Figure 5-15 SmartLogger networking

● If a SUN2000 is networked using the SmartLogger, it cannot be connected to a Smart Dongle.

● It is recommended that the number of SUN2000s connected to each RS485 route be less than 30.

MBUS Communication

The MBUS is a communication mode in which communication signals are loaded to power cables through the communications board for transmission.

The built-in MBUS module in the SUN2000 does not need to be connected with cables.

Figure 5-16 MBUS communication

5.7.2 (Optional) Connecting the RS485 Communications Cable to the SUN2000

Procedure

Step 1 Connect the signal cable to the signal cable connector.

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 5 Electrical Connections

Figure 5-17 Connecting the cable

Step 2 Connect the signal cable connector to the COM port.

Figure 5-18 Securing the signal cable connector

----End

5.7.3 (Optional) Connecting the RS485 Communications Cable to the Power Meter

Procedure

Step 1 Connect the signal cable to the signal cable connector.

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 5 Electrical Connections

Figure 5-19 Connecting the cable

Step 2 Connect the signal cable connector to the COM port.

Figure 5-20 Securing the signal cable connector

----End

5.7.4 (Optional) Connecting the Power Grid Scheduling Signal Cable

Procedure

Step 1 Connect the signal cable to the signal cable connector.

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 5 Electrical Connections

Figure 5-21 Connecting the cable

Step 2 Connect the signal cable connector to the COM port.

Figure 5-22 Securing the signal cable connector

----End

5.7.5 (Optional) Connecting the Rapid Shutdown Signal Cable

Step 1 Connect the signal cable to the signal cable connector.

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 5 Electrical Connections

Figure 5-23 Connecting the cable

Step 2 Connect the signal cable connector to the COM port.

Figure 5-24 Securing the signal cable connector

----End

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 6 Commissioning

6 Commissioning

6.1 Checking Before Power-On

Table 6-1 Checklist

No. Check Item Acceptance Criteria

1 SUN2000 installation The SUN2000 is installed correctly and

securely.

2 Smart Dongle The Smart Dongle is installed correctly

and securely.

3 Cable routing The cables are routed properly as

required by the customer.

4 Cable ties Cable ties are evenly distributed and no

burr exists.

5 Reliable grounding The PE cable is connected correctly and

securely.

6 Switch DC switches and all the switches

connecting to the SUN2000 are OFF.

7 Cable connection The AC output power cable, and DC

input power cables are connected correctly and securely.

8 Unused terminals and ports Unused terminals and ports are locked

by watertight caps.

9 Installation environment The installation space is proper, and

the installation environment is clean and tidy.

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SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 6 Commissioning

6.2 System Power-On

Prerequisites

● Before turning on the AC switch between the SUN2000 and the power grid, check that the AC voltage is within the

● If the DC power supply is connected but the AC power supply is disconnected, the SUN2000 will report a Grid Loss alarm. The SUN2000 can start properly only after the power grid recovers.

Procedure

specied range using a multimeter.

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

Step 2 (Optional) Remove the locking screw beside the DC switch.

Figure 6-1 Removing the locking screw beside the DC switch

Step 3 Turn on the DC switch at the bottom of the SUN2000.

Step 4 Observe the LED indicators to check the operating status of the SUN2000.

Table 6-2 Indicator description

7 Man-Machine Interaction

● If the SUN2000 is connected to the FusionSolar Smart PV Management System, the FusionSolar app is recommended. If the SUN2000 is connected to other management systems, the SUN2000 app is recommended.

● Access the Huawei app store (http://appstore.huawei.com), search for FusionSolar or SUN2000, and download the app installation package. You can also scan the QR codes below to download the apps.

● The latest Android version must be used for device commissioning. The iOS version is not updated and can be used only for viewing PV plant information.

● The screenshots are for reference only. The actual screens prevail.

● Obtain the initial password for connecting to the solar inverter WLAN from the label on the side of the solar inverter.

● Set the password at the password periodically and keep the new password in mind. Not changing the 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.

● Set the correct grid code based on the application area and scenario of the SUN2000.

rst login. To ensure account security, change the

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SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 7 Man-Machine Interaction

7.1 Scenario in Which SUN2000s Are Connected to the FusionSolar Smart PV Management System

7.1.1 (Optional) Registering an Installer Account

● If you have an installer account, skip this step.

● You can register an account only using a mobile phone only in China.

● The mobile number or email address used for registration is the user name for logging in to the FusionSolar app.

Create the name.

Figure 7-1 Creating the

To create multiple installer accounts for a company, log in to the FusionSolar app and tap New User to create an installer account.

rst installer account and create a domain named after the company

rst installer account

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SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 7 Man-Machine Interaction

Figure 7-2 Creating multiple installer accounts for the same company

7.1.2 Creating a PV Plant and a User

Figure 7-3 Creating a PV plant and a user

For details about how to use the site deployment wizard, see

Guide

. You can also scan the QR code to obtain the document.

FusionSolar App Quick

7.1.3 SmartLogger Networking Scenario

For details, see

(Inverters + SmartLogger3000)

PV Plants Connecting to Huawei Hosting Cloud Quick Guide

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 7 Man-Machine Interaction

You can scan the QR code below to obtain the document.

7.2 Scenario in Which SUN2000s Are Connected to Other Management Systems

Step 1 Open the SUN2000 app, scan the QR code of the SUN2000 or manually connect

to the WLAN hotspot to access the device commissioning screen.

Step 2 Select installer and enter the login password.

Step 3 Tap Log in to access the quick settings screen or SUN2000 home screen.

Figure 7-4 Logging In to the app

----End

WARNING

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 8 Maintenance

8 Maintenance

8.1 System Power-O

Precautions

Procedure

Step 1 Send a shutdown command on the app.

Step 2 Turn o the AC switch between the SUN2000 and the power grid.

Step 3 Turn o the DC switch at the bottom of the SUN2000.

Step 4 (Optional) Install the locking screw for the DC switch.

After the SUN2000 powers o, the remaining electricity and heat may still cause electric shocks and body burns. Therefore, put on protective gloves and begin operating the SUN2000

Figure 8-1 Installing the locking screw for the DC switch

ve minutes after the power-o.

Step 5 Turn on the DC switch between the PV string and the SUN2000 if there is any.

----End

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SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 8 Maintenance

8.2 Routine Maintenance

To ensure that the SUN2000 can operate properly for a long term, you are advised to perform routine maintenance on it as described in this chapter.

Before cleaning the system, connecting cables, and ensuring the grounding reliability, power

Table 8-1 Maintenance checklist

Check Item Check Method Maintenance

o the system.

Interval

System cleanliness

System operating status

Electrical connection

Grounding reliability

Check periodically that the heat sinks are free from obstacles and dust.

● Check that the SUN2000 is not damaged or deformed.

● Check that the SUN2000 operates with no abnormal sound.

● Check that all SUN2000 parameters are correctly set during operation.

● Check that cables are secured.

● Check that cables are intact, and that in particular, the parts touching the metallic surface are not scratched.

Check that ground cables are securely connected.

Once every 6 to 12 months

Once every 6 months

The rst inspection is 6 months after the initial commissioning. From then on, the interval can be 6 to 12 months.

8.3 Troubleshooting

Air tightness Check that all terminals and ports are

properly sealed.

Alarm severities are

dened as follows:

Once a year

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 8 Maintenance

● Major: The inverter is faulty. As a result, the output power decreases or the grid-tied power generation is stopped.

● Minor: Some components are faulty without aecting the grid-tied power generation.

● Warning: The inverter works properly. The output power decreases or some authorization functions fail due to external factors.

Table 8-2 Common fault alarm list

ID Name Severity Cause Solution

2001 High

string input voltage

2002 DC arc

fault

Major The PV array is not

properly congured. Excessive PV modules are connected in series to the PV string, and therefore the PV string open-circuit voltage exceeds the maximum inverter operating voltage.

● Cause ID 1: PV strings 1 and 2

● Cause ID 2: PV strings 3 and 4

● Cause ID 3: PV strings 5 and 6

● Cause ID 4: PV strings 7 and 8

Major The PV string power cables

arc or are in poor contact.

● Cause ID 1: PV strings 1 and 2

● Cause ID 2: PV strings 3 and 4

● Cause ID 3: PV strings 5 and 6

● Cause ID 4: PV strings 7 and 8

Reduce the number of PV modules connected in series to the PV string until the PV string open-circuit voltage is less than or equal to the maximum inverter operating voltage. After the PV string

conguration is

corrected, the alarm disappears.

Check whether the PV string cables arc or are in poor contact.

2003 DC arc

fault

Major The PV string power cables

arc or are in poor contact.

Check whether the PV string cables arc or are in poor contact.

Cause ID 1–8: PV strings 1– 8

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 8 Maintenance

ID Name Severity Cause Solution

2011 String

reverse connecti on

2012 String

current backfeed

Major The PV string polarity is

reversed.

Cause ID 1–8: PV strings 1– 8

Warning The number of PV modules

connected in series to the PV string is insucient. As a result, the terminal voltage is lower than that of other strings.

Cause ID 1–8: PV strings 1– 8

Check whether the PV string is reversely connected to the inverter. If yes, wait until the solar irradiance declines at night and the PV string current drops to below 0.5 A. Then, turn

o

the two DC switches and correct the PV string connection.

1. Check whether the number of PV modules connected in series to the PV string is less than that of other PV strings. If yes, wait until the PV string current drops below 0.5 A,

o all DC switches, and

turn adjust the number of PV modules in the PV string.

2. Check whether the opencircuit voltage of the PV string is abnormal.

3. Check whether the PV string is shaded.

2021 AFCI

self-

Major Cause ID = 1, 2

The AFCI self-check fails.

check failure

2031 Phase

wire shortcircuited to PE

Major Cause ID = 1

The impedance of the output phase wire to PE is low or the output phase wire is short-circuited to PE.

2032 Grid loss Major Cause ID = 1

● Power grid outage occurs.

● The AC circuit is disconnected or the AC switch is

o.

Turn o the AC output switch and DC input switch, and then turn them on after 5 minutes. If the alarm persists, contact Huawei technical support.

Check the impedance of the output phase wire to PE, locate the position with low impedance, and rectify the fault.

● The alarm is cleared automatically after the power grid recovers.

● Check whether the AC circuit is disconnected or the AC switch is

o.

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 8 Maintenance

ID Name Severity Cause Solution

2033 Grid

undervol tage

Major Cause ID = 1

The power grid voltage is below the lower threshold or the low-voltage duration has lasted for more than the value

specied by LVRT.

● If the alarm occurs occasionally, the power grid may be abnormal temporarily. The inverter automatically recovers after detecting that the power grid becomes normal.

● If the alarm persists, check whether the power grid voltage is within the acceptable range. If not, contact the local power operator. If yes, modify the grid undervoltage protection threshold through the app, SmartLogger, or NMS with the consent of the local power operator.

● If the alarm persists for a long time, check the AC circuit breaker and AC output power cable.

2034

Grid overvolt age

Major Cause ID = 1

The power grid voltage exceeds the upper threshold or the high voltage duration has lasted for more than the value specied by HVRT.

● If the alarm occurs occasionally, the power grid may be abnormal temporarily. The inverter automatically recovers after detecting that the power grid becomes normal.

● If the alarm persists, check whether the power grid frequency is within the acceptable range. If not, contact the local power operator. If yes, modify the grid overfrequency protection threshold through the app, SmartLogger, or NMS with the consent of the local power operator.

● Check whether the peak voltage of the power grid is too high. If the alarm persists and lasts for a long time, contact the local power operator.

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 8 Maintenance

ID Name Severity Cause Solution

2035 Grid

volt. Imbalan ce

Major Cause ID = 1

The dierence between power grid phase voltages exceeds the upper threshold.

● If the alarm occurs occasionally, the power grid may be abnormal temporarily. The inverter automatically recovers after detecting that the power grid becomes normal.

● If the alarm persists, check whether the power grid voltage is within the acceptable range. If not, contact the local power operator.

● If the alarm lasts for a long time, check the AC output power cable connection.

● If the AC output power cable is correctly connected, yet the alarm persists and

aects the energy yield of the PV plant, contact the local power operator.

2036

Grid overfreq uency

Major Cause ID = 1

Power grid exception: The actual power grid frequency is higher than the requirements for the local power grid code.

● If the alarm occurs occasionally, the power grid may be abnormal temporarily. The inverter automatically recovers after detecting that the power grid becomes normal.

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 8 Maintenance

ID Name Severity Cause Solution

2037 Grid

underfre quency

2038 Unstable

grid frequenc y

Major Cause ID = 1

Power grid exception: The actual power grid frequency is lower than the requirements for the local power grid code.

Major Cause ID = 1

Power grid exception: The actual change rate of the power grid frequency does not meet the requirements for the local power grid code.

● If the alarm occurs occasionally, the power grid may be abnormal temporarily. The inverter automatically recovers after detecting that the power grid becomes normal.

● If the alarm persists, check whether the power grid frequency is within the acceptable range. If not, contact the local power operator. If yes, modify the grid underfrequency protection threshold through the app, SmartLogger, or NMS with the consent of the local power operator.

● If the alarm occurs occasionally, the power grid may be abnormal temporarily. The inverter automatically recovers after detecting that the power grid becomes normal.

● If the alarm persists, check whether the power grid frequency is within the acceptable range. If not, contact the local power operator.

2039 Output

overcurr ent

Major Cause ID = 1

The power grid voltage drops dramatically or the power grid is shortcircuited. As a result, the inverter transient output current exceeds the upper threshold, and protection is triggered.

● The inverter monitors its external operating conditions in real time and automatically recovers after the fault is rectied.

● If the alarm persists and aects the energy yield of the PV plant, check whether the output is short-circuited. If the fault cannot be

rectied,

contact your dealer or Huawei technical support.

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 8 Maintenance

ID Name Severity Cause Solution

2040 Output

DC compon ent overhigh

2051 Abnorm

al residual current

2061 Abnorm

al groundin g

Major Cause ID = 1

The DC component of the inverter output current exceeds the upper threshold.

Major Cause ID = 1

The insulation impedance of the input side to PE decreases when the inverter is operating.

Major Cause ID = 1

● The neutral wire or PE cable of the inverter is not connected.

● The output mode set for the inverter is inconsistent with the cable connection mode.

● The inverter monitors its external operating conditions in real time and automatically recovers after the fault is rectied.

● If the alarm persists and aects the energy yield of the PV plant, contact your dealer or Huawei technical support.

● If the alarm occurs accidentally, the external power cable may be abnormal temporarily. The inverter automatically recovers after the fault is

rectied.

● If the alarm persists or lasts a long time, check whether the impedance between the PV string and ground is too low.

Power o the inverter (turn o the AC output switch and DC input switch, and wait for a period of time. For details about the wait time, see the description on the device safety warning label), and then perform the following operations:

● Check whether the PE cable for the inverter is connected properly.

● If the inverter is connected to a TN power grid, check whether the neutral wire is properly connected and whether the voltage of the neutral wire to ground is normal.

● After the inverter is powered on, check whether the output mode set for the inverter is consistent with the output cable connection mode.

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 8 Maintenance

ID Name Severity Cause Solution

2062 Low

insulatio n resistanc e

2063 Cabinet

overtem perature

Major Cause ID = 1

● The PV array is shortcircuited with PE.

● The PV string has been in a moist environment for a long time and the circuit is not well insulated to ground.

Minor Cause ID = 1

● The inverter is installed in a place with poor ventilation.

● The ambient temperature exceeds the upper threshold.

● The inverter is not operating properly.

● Check the impedance between the PV string and the PE cable. If a short circuit occurs, rectify the fault.

● Check whether the PE cable of the inverter is correctly connected.

● If you have

conrmed that

the impedance is lower than

specied protection

the threshold in a cloudy or rainy environment, log in to the app, SmartLogger, or NMS and set Insulation resistance protection threshold.

● Check the ventilation and ambient temperature at the inverter installation position.

● If the ventilation is poor or the ambient temperature exceeds the upper threshold, improve the ventilation and heat dissipation.

● If both the ventilation and ambient temperature meet requirements yet the alarm persists, contact your dealer or Huawei technical support.

2064 Device

fault

Major Cause ID = 1–15

An unrecoverable fault occurs on a circuit inside the inverter.

Turn o the AC output switch and DC input switch, and then turn them on after 5 minutes. If the alarm persists, contact your dealer or Huawei technical support.

NOTICE

Cause ID = 1: Perform the preceding operations when the PV string current is less than 1 A.

2065 Upgrade

failed or version mismatc

Minor Cause ID = 1–6

The upgrade is not completed normally.

● Perform an upgrade again.

● If the upgrade fails several times, contact your dealer or Huawei technical support.

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 8 Maintenance

ID Name Severity Cause Solution

2066 License

expired

2067 Faulty

power collector

61440 Faulty

monitori ng unit

Warning Cause ID = 1

● The privilege license has entered the grace period.

● The privilege feature is about to expire.

Major Cause ID = 1

The power meter is disconnected.

Minor Cause ID = 1

● The ash memory is

insucient.

● The ash memory has bad sectors.

● Apply for a new license.

● Load a new certicate.

● Check whether the congured power meter model is the same as the actual model.

● Check whether the communications parameters of the power meter are the same as the RS485 congurations of the inverter.

● Check whether the power meter is powered on and whether the RS485 communications cable is connected.

Turn o the AC output switch and DC input switch, and then turn them on after 5 minutes. If the alarm persists, replace the monitoring board or contact your dealer or Huawei technical support.

2072 Transient

AC overvolt age

Major Cause ID = 1

The inverter detects that the phase voltage exceeds the transient AC overvoltage protection threshold.

● If the voltage at the grid connection point is too high, contact the local power operator.

● If you have conrmed that the voltage at the grid connection point exceeds the upper threshold and obtained consent from the local power operator, modify the overvoltage protection thresholds.

● Check whether the peak grid voltage exceeds the upper threshold.

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 8 Maintenance

ID Name Severity Cause Solution

2085 Built-in

PID operatio n abnorma l

Minor Cause ID = 1, 2

● The output resistance of PV arrays to ground is low.

● The system insulation resistance is low.

● Cause ID = 1

1. Turn o the AC output switch and DC input switch, wait for a period of time (for details about the wait time, see the description on the device safety warning label), and then turn on the DC input switch and AC output switch.

2. If the alarm persists, contact your dealer or Huawei technical support.

● Cause ID = 2

1. Check the impedance between the PV array output and the ground. If a short circuit occurs or the insulation is insucient, rectify the fault.

2. If the alarm persists, contact your dealer or Huawei technical support.

2090

Abnorm al active power scheduli ng instructi on

Major Cause ID = 1

● The DI input is abnormal.

● The DI input is inconsistent with the

conguration.

1. Check whether the cables are connected correctly to the DI ports.

2. On the DI active scheduling screen under the dry contact scheduling settings, view the DI signal

conguration

mapping table. Contact the power grid company to check whether the

congurations in the mapping table are complete and meet the requirements.

NO TE

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 8 Maintenance

ID Name Severity Cause Solution

2091 Abnorm

al reactive power scheduli ng instructi on

Major Cause ID = 1

● The DI input is abnormal.

● The DI input is inconsistent with the

conguration.

1. Check whether the cables are connected correctly to the DI ports.

2. On the DI reactive power scheduling screen under the dry contact scheduling settings, view the DI signal conguration mapping table. Contact the power grid company to check whether

congurations in the

the mapping table are complete and meet the requirements.

Contact your dealer or Huawei technical support if all troubleshooting procedures listed above are completed and the fault still exists.

NO TICE

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 9 Handling the Inverter

9 Handling the Inverter

9.1 Removing the SUN2000

Before removing the SUN2000, disconnect both AC and DC connections.

Perform the following operations to remove the SUN2000:

1. Disconnect all cables from the SUN2000, including RS485 communications cables, DC input power cables, AC output power cables, and PGND cables.

2. Remove the SUN2000 from the mounting bracket.

3. Remove the mounting bracket.

9.2 Packing the SUN2000

● If the original packing materials are available, put the SUN2000 inside them and then seal them by using adhesive tape.

● If the original packing materials are not available, put the SUN2000 inside a suitable cardboard box and seal it properly.

9.3 Disposing of the SUN2000

If the SUN2000 service life expires, dispose of it according to the local disposal rules for electrical equipment waste.

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 10 Technical Specications

10 Technical Specications

Eciency

Input

Technical

Specicati ons

Peak

eciency

European

eciency

Technical

Specicati ons

Maximum input DC power

SUN200020KTL-M3

97.6%/220 V AC

97.2%/220 V AC

SUN200020KTL-M3

30,000 W 44,850 W 45,000 W 54,000 W 60,000 W

SUN2000-

29.9KTLM3

98.65%/40 0 V AC

98.7%/480 V AC

98.4%/400 V AC

98.45%/48 0 V AC

SUN2000-

29.9KTLM3

SUN200030KTL-M3

98.65%/40 0 V AC

98.7%/480 V AC

98.4%/400 V AC

98.45%/48 0 V AC

SUN200030KTL-M3

SUN200036KTL-M3

98.65%/40 0 V AC

98.7%/480 V AC

98.4%/400 V AC

98.5%/480 V AC

SUN200036KTL-M3

SUN200040KTL-M3

98.65%/40 0 V AC

98.7%/480 V AC

98.4%/400 V AC

98.5%/480 V AC

SUN200040KTL-M3

Maximum input

voltage

Maximum input current (per MPPT)

800 V 1100 V

26 A

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 10 Technical Specications

Technical

Specicati ons

Maximum shortcircuit current (per MPPT)

Minimum startup voltage

MPP voltage range

Full power MPPT voltage range

SUN200020KTL-M3

SUN2000-

29.9KTLM3

40 A

200 V

200–750 V 200–1000 V

300–550 V 500–800

V/400 V AC

625–850 V/480 V AC

SUN200030KTL-M3

500–800 V DC/(380 V AC, 400 V AC)

625–850 V DC/400 V AC

625–850 V DC/480 V AC

SUN200036KTL-M3

500–800 V DC/(380 V AC, 400 V AC)

625–850 V DC/400 V AC

625–850 V DC/480 V AC

SUN200040KTL-M3

500–800 V DC/(380 V AC, 400 V AC)

625–850 V DC/400 V AC

625–850 V DC/480 V AC

Rated input voltage

Maximum

360 V 600 V (400

V AC)

720 V (480 V AC)

600 V (380 V AC, 400 V AC)

720 V (480 V AC)

600 V (380 V AC, 400 V AC)

650 V (440 V AC), 720 V (480 V AC)

600 V (380 V AC, 400 V AC)

650 V (440 V AC)

720 V (480 V AC)

number of inputs

Number of

MPPTs

Note a: The maximum input voltage is the maximum DC input voltage that the SUN2000 can withstand. If the input voltage exceeds this value, the SUN2000 may be damaged.

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 10 Technical Specications

Output

Technical

Specicati ons

Rated output power

Maximum apparent power

Maximum active power (cosφ = 1)

Rated output voltage

SUN200020KTL-M3

SUN2000-

29.9KTL-

SUN200030KTL-M3

SUN200036KTL-M3

SUN200040KTL-M3

20,000 W 29,900 W 30,000 W 36,000 W 40,000 W

22,000 VA 29,900 VA

33,000 VA

39,600 VA 44,000 VA

22,000 W 29,900 W 33,000 W 39,600 W 44,000 W

127 V AC (220 V AC), 3W/N +PE

230 V AC (400 V AC), 3W/N +PE

277 V AC (480 V AC), 3W +PE

220 V AC (380 V AC), 3W/N +PE

230 V AC (400 V AC), 3W/N +PE

254 V AC (440 V AC), 3W/N +PE

277 V AC (480 V AC), 3W +PE

220 V AC (380 V AC), 3W/N +PE

230 V AC (400 V AC), 3W/N +PE

254 V AC (440 V AC), 3W +PE

277 V AC (480 V AC), 3W +PE

220 V AC (380 V AC), 3W/N +PE

230 V AC (400 V AC), 3W/N +PE

254 V AC (440 V AC), 3W +PE

277 V AC (480 V AC), 3W +PE

Maximum

See standards about the local power grid. output voltage at long-term operation

Rated output current

52.5 A

(220 V AC)

28.9 A

(400 V AC)

43.2 A (400 V AC)

36.0 A (480 V AC)

45.6 A (380 V AC)

43.3 A (400 V AC)

39.4 A (440 V AC)

36.1 A (480 V AC)

54.7 A (380 V AC)

52.0 A (400 V AC)

47.3 A (440 V AC)

43.3 A (480 V AC)

60.8 A (380 V AC)

57.8 A (400 V AC)

52.5 A (440 V AC)

48.1 A (480 V AC)

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 10 Technical Specications

Technical

Specicati ons

Maximum output current

Output voltage frequency

Power factor

Output DC component DCI

SUN2000-

20KTL-M3

58.0 A

(220 V AC)

31.9 A

(400 V AC)

50 Hz/60 Hz

0.8 leading–0.8 lagging

< 0.5% of the rated output

SUN2000-

29.9KTLM3

43.2 A (400 V AC)

36.0 A (480 V AC)

SUN200030KTL-M3

50.4 A (380 V AC)

47.9 A (400 V AC)

43.5 A (440 V AC)

39.9 A (480 V AC)

SUN200036KTL-M3

61.1 A (380 V AC)

58.0 A (400 V AC)

52.8 A (440 V AC) (Mexico)

48.4 A (480 V AC)

SUN200040KTL-M3

67.2 A (380 V AC)

63.8 A (400 V AC)

58.0 A (440 V AC) (Mexico)

53.2 A (480 V AC)

Protection

Maximum total harmonic distortion (THD)

AC THDi

Note a: The maximum apparent power of the SUN2000-30KTL-M3 is 30,000 VA under the Germany VDE-AR-N-4105, Belgium C10/11, and Austria TOR gird codes.

Technical

Specicati ons

Overvoltag e category

Input DC switch

< 3% under rated conditions. Single harmonic meets the VDE4105

requirements.

SUN2000-

20KTL-M3

PV II/AC III

Supported

SUN2000-

29.9KTLM3

SUN200030KTL-M3

SUN200036KTL-M3

SUN200040KTL-M3

Islanding protection

Supported

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 10 Technical Specications

Technical

Specicati ons

Output overcurrent protection

Input reverse connection protection

String fault detection

DC surge protection

AC surge protection

Insulation resistance detection

SUN2000-

20KTL-M3

Supported

Type II

Supported

SUN2000-

29.9KTLM3

SUN200030KTL-M3

SUN200036KTL-M3

SUN200040KTL-M3

Residual current monitoring unit (RCMU)

Supported

Display and Communication

Technical

Specicati ons

Display LED indicator; WLAN+app

RS485 Supported

Built-in WLAN

AC MBUS Supported

DC MBUS Supported

SUN2000-

20KTL-M3

Supported

SUN2000-

29.9KTLM3

SUN200030KTL-M3

SUN200036KTL-M3

SUN200040KTL-M3

AFCI Supported

PID Supported

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual 10 Technical Specications

General Specications

Technical

Specicati ons

Dimensions (W x H x D)

Net Weight 43 kg

Operating temperatur e

Humidity 0%–100%

Cooling mode

Maximum operating altitude

Storage temperatur e

SUN2000-

20KTL-M3

640 mm x 530 mm x 270 mm

–25°C to +60°C (derated when the temperature is above +45°C)

Natural cooling

0–4000 m (derated when above 3000 m)

–40°C to +70°C

SUN2000-

29.9KTLM3

SUN200030KTL-M3

SUN200036KTL-M3

SUN200040KTL-M3

IP rating IP66

Topology Transformerless

Standards Compliance

Technical

Specicati ons

Standards EN/IEC 62109-1, EN/IEC 62109-2, NB/T 32004-2013

SUN2000-

20KTL-M3

SUN2000-

29.9KTLM3

SUN200030KTL-M3

SUN200036KTL-M3

SUN200040KTL-M3

NO TE

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual A Grid Code

A Grid Code

The grid codes are subject to change. The listed codes are for reference only.

No. Grid Code Description

1 VDE-AR-N-4105 Germany low-voltage (LV) power

grid

2 NB/T 32004 China Golden Sun LV power grid

3 UTE C 15-712-1(A) France mainland power grid

4 UTE C 15-712-1(B) France island power grid

5 UTE C 15-712-1(C) France island power grid

6 VDE4110-MV Germany medium-voltage (MV)

power grid

7 G99-England England 230 V power grid (I > 16

8 G99-Scotland Scotland 240 V power grid (I > 16

9 CEI0-21 Italy power grid

10 RD1699/661 Spain LV power grid

11 RD1699/661-MV480 Spain MV power grid

12 C10/11 Belgium power grid

13 AS4777 Australia power grid

14 AS4777-ACT Australia power grid

15 AS4777-NSW-ESS Australia power grid

16 AS4777-NSW-AG Australia power grid

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual A Grid Code

No. Grid Code Description

17 AS4777-QLD Australia power grid

18 AS4777-SA Australia power grid

19 AS4777-VIC Australia power grid

20 IEC61727 IEC 61727 LV power grid (50 Hz)

21 CEI0-16 Italy power grid

22 CHINA-MV480 China MV standard power grid

23 CHINA-MV China MV standard power grid

24 TAI-PEA Thailand grid-tied standard power

grid

25 TAI-MEA Thailand grid-tied standard power

grid

26 VDE4110-MV480 Germany MV standard power grid

27 G99-England-MV480 UK 480 V MV grid-tied power grid

(I > 16 A)

28 IEC61727-MV480 IEC 61727 MV grid-tied power grid

(50 Hz)

29 UTE C 15-712-1-MV480 France island power grid

30 TAI-PEA-MV480 Thailand MV grid-tied power grid

(PEA)

31 TAI-MEA-MV480 Thailand MV grid-tied power grid

(MEA)

32 C11/C10-MV480 Belgium MV power grid

33 Philippines Philippines LV power grid

34 Philippines-MV480 Philippines MV power grid

35 NRS-097-2-1 South Africa standard power grid

36 IEC61727-60Hz IEC 61727 LV grid-tied power grid

(60 Hz)

37 IEC61727-60Hz-MV480 IEC 61727 MV grid-tied power grid

(60 Hz)

38 CHINA_MV500 China MV standard power grid

39 PO12.3-MV480 Spain MV power grid

40 EN50549-LV Ireland power grid

41 EN50549-MV480 Ireland MV power grid

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual A Grid Code

No. Grid Code Description

42 ABNT NBR 16149 Brazil power grid

43 ABNT NBR 16149-MV480 Brazil MV power grid

44 SA_RPPs South Africa LV power grid

45 SA_RPPs-MV480 South Africa MV power grid

46 INDIA India LV power grid

47 INDIA-MV500 India MV power grid

48 G99-TYPEA-LV UK G99_TypeA_LV power grid

49 G99-TYPEB-LV UK G99_TypeB_LV power grid

50 G99-TYPEB-HV UK G99_TypeB_HV power grid

51 G99-TYPEB-HV-MV480 UK G99_TypeB_HV MV power grid

52 G99-TYPEA-HV UK G99_TypeA_HV power grid

53 EN50549-MV400 Ireland new standard power grid

54 VDE-AR-N4110 Germany 230 V MV power grid

55 VDE-AR-N4110-MV480 Germany MV standard power grid

56 NTS Spain power grid

57 NTS-MV480 Spain MV power grid

58 CEA India LV power grid (CEA)

59 CEA-MV480 India MV power grid (CEA)

60 C10/11-MV400 Belgium MV power grid

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual B Device Commissioning

B Device Commissioning

Step 1 Access Device Commissioning screen.

Figure B-1 Method 1: before login (not connected to the Internet)

NO TICE

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual B Device Commissioning

Figure B-2 Method 2: after login (connected to the Internet)

Step 2 Connect to the solar inverter WLAN and log in to the device commissioning screen

as the installer user.

● If the mobile phone is directly connected to the SUN2000, the visible distance between the SUN2000 and the mobile phone must be less than 3 m when a built-in antenna is used and less than 50 m when an external antenna is used to ensure the communication quality between the app and the SUN2000. The distances are for reference only and may vary with mobile phones and shielding conditions.

● When connecting the SUN2000 to the WLAN over a router, ensure that the mobile phone and SUN2000 are in the WLAN coverage of the router and the SUN2000 is connected to the router.

● The router supports WLAN (IEEE 802.11 b/g/n, 2.4 GHz) and the WLAN signal reaches the SUN2000.

● The WPA, WPA2, or WPA/WPA2 encryption mode is recommended for routers. Enterprise-level encryption is not supported (for example, public hotspots requiring authentication such as airport WLAN). WEP and WPA TKIP are not recommended because these two encryption modes have serious security defects. If the access fails in WEP mode, log in to the router and change the encryption mode of the router to WPA2 or WPA/WPA2.

NO TE

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual B Device Commissioning

● Obtain the initial password for connecting to the solar inverter WLAN from the label on the side of the solar inverter.

● USet the password at the rst 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 you access the Device Commissioning screen of the SUN2000 for the you need to manually set the login password because the SUN2000 does not have an initial login password.

rst time,

Figure B-3 Quick settings

----End

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual C Setting Power Adjustment Parameters

C Setting Power Adjustment Parameters

Prerequisites

Procedure

Step 1 On the home screen, tap Power Adjustment and set power parameters as

You have logged in to the app as installer.

required.

Figure C-1 Setting Power Adjustment Parameters

----End

NO TICE

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual D Built-in PID Recovery

D Built-in PID Recovery

Ensure that the inverter ground cable is securely connected. Otherwise, the built-in PID repair function will be aected and electric shocks may occur.

Prerequisites

Procedure

Step 1 On the home screen, choose Settings > Feature Parameters and set related

You have logged in to the app as installer.

parameters.

Figure D-1 Setting PID suppression parameters

NO TE

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual D Built-in PID Recovery

● Set PID running mode to Repair (disabled by default).

● Set Nighttime o-grid repair to (this parameter is displayed when Built-in PID

running mode is set to Repair).

----End

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual E Rapid Shutdown

E Rapid Shutdown

If all PV modules are equipped with optimizers, the PV system can perform a rapid shutdown, reducing the output voltage of the optimizers to below 30 V within 30s. The rapid shutdown is not supported if optimizers are modules.

congured for some PV

Triggering methods of rapid shutdown:

● Method 1 (recommended): Turn the power grid.

● Method 2: Turn

● Method 3: If the DIN5 port (port 15) of the inverter communications terminal is connected to a rapid shutdown button, press the button to trigger rapid shutdown.

o the DC switch at the bottom of the inverter.

o the AC switch between the inverter and

NO TICE

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual F Resetting Password

F Resetting Password

Step 1 Check that the AC and DC power supplies to the solar inverter are connected

simultaneously, and that the for more than 3 minutes.

and indicators are steady green or blink slowly

Step 2 Turn o the AC switch, set the DC switch at the bottom of the solar inverter to

OFF, and wait until all indicators on the solar inverter panel turn o.

Step 3 Complete the following operations within 3 minutes:

1. Turn on the AC switch and wait until the

2. Turn o the AC switch and wait until all indicators on the solar inverter panel turn o.

3. Turn on the AC switch and wait until all LED indicators on the inverter panel blink and turn o after about 30s.

Step 4 Wait until the three indicators on the inverter panel blink green quickly and then

blink red quickly, indicating that the password has been restored.

Step 5 Reset the password within 10 minutes. (If no operation is performed within 10

minutes, all parameters of the solar inverter remain the same as those before the reset.)

1. Wait until the

2. Obtain the initial WLAN hotspot name (SSID) and initial password (PSW) from the label on the side of the solar inverter to connect to the app.

3. On the login page, set a new login password and log in to the app.

Step 6 Set router and management system parameters to implement remote

management.

indicator blinks.

----End

You are advised to reset the password in the morning or at night when the solar irradiance is low.

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual G Setting Dry Contact Scheduling Parameters

G Setting Dry Contact Scheduling

Parameters

Prerequisites

Procedure

Step 1 On the home screen, choose Settings > Power adjustment and set Dry contact

You have logged in to the app as installer.

scheduling to .

Figure G-1 Setting dry contact scheduling parameters

----End

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual H AFCI

H AFCI

Function

If PV modules or cables are not properly connected or damaged, electric arcs may occur, which may cause compliance with UL 1699B-2018 to ensure the safety of users' lives and property.

re. Huawei SUN2000s provide unique arc detection in

This function is enabled by default. The SUN2000 automatically detects arc faults. To disable this function, log in to the FusionSolar app, enter the Device Commissioning screen, choose Settings > Feature parameters, and disable AFCI.

For details about how to enter the Device Commissioning screen, see Device Commissioning.

Clearing Alarms

The AFCI function involves the DC arc fault alarm.

The SUN2000 has the AFCI alarm automatic clearance mechanism. If an alarm is triggered for less than clears the alarm. If the alarm is triggered for ve times or more within 24 hours, the SUN2000 locks for protection. You need to manually clear the alarm on the SUN2000 so that it can work properly.

You can manually clear the alarm as follows:

● Method 1: FusionSolar App

ve times within 24 hours, the SUN2000 automatically

Log in to the FusionSolar app and choose My > Device Commissioning. On the Device Commissioning screen, connect and log in to the SUN2000 that generates the AFCI alarm, tap Alarm management, and tap Delete on the right of the DC arc fault alarm to clear the alarm.

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual H AFCI

Figure H-1 Alarm management

● Method 2: FusionSolar Smart PV Management System

Log in to the FusionSolar Smart PV Management System using a non-owner account, choose Intelligent O&M > Alarm Management, select the DC arc

fault alarm, and click Clear to clear the alarm.

Figure H-2 Clearing alarms

Switch to the owner account with PV plant management rights. On the home page, click the PV plant name to go to the PV plant page, and click OK as prompted to clear the alarm.

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual H AFCI

Figure H-3 Owner conrmation

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual I Smart I-V Curve Diagnosis

I Smart I-V Curve Diagnosis

For details, see FusionSolar 6.0 Smart PV Management System Smart I-V Curve

Diagnosis User Manual.

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual J Acronyms and Abbreviations

J Acronyms and Abbreviations

AFCI arc-fault circuit interrupter

LED light emitting diode

MBUS monitoring bus

MPP maximum power point

MPPT maximum power point tracking

PE protective earthing

PID potential induced degradation

PV photovoltaic

RCD residual current device

HUAWEI SUN2000-20KTL, SUN2000-29.9KTL, SUN2000- 30KTL, SUN2000- 36KTL, SUN2000- 40KTL User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

About this Document

Contents

1 Safety Information

1.1 General Safety

1.2 Personnel Requirements

1.3 Electrical Safety

1.4 Installation Environment Requirements

1.5 Mechanical Safety

1.6 Commissioning

1.7 Maintenance and Replacement

2 Overview

2.1 Overview

2.2 Appearance

2.3 Label Description

2.4 Working Principles

2.4.1 Circuit Diagram

2.4.2 Working Modes

3 SUN2000 Storage

4 Installation

4.1 Checking Before Installation

4.2 Tool Preparation

4.3 Selecting an Installation Position

4.4 Moving the SUN2000

4.5 Installing the Mounting Bracket

4.5.1 Support-mounted Installation

4.5.2 Wall-mounted Installation

4.6 Installing a SUN2000

5 Electrical Connections

5.1 Precautions

5.2 Preparing Cables

5.3 Connecting the PE Cable

5.4 Connecting the AC Output Power Cable

5.5 Installing the DC Input Power Cable

5.6 (Optional) Installing the Smart Dongle

5.7 Connecting the Signal Cable

5.7.1 Communication Modes

5.7.2 (Optional) Connecting the RS485 Communications Cable to the SUN2000

5.7.3 (Optional) Connecting the RS485 Communications Cable to the Power Meter

5.7.4 (Optional) Connecting the Power Grid Scheduling Signal Cable

5.7.5 (Optional) Connecting the Rapid Shutdown Signal Cable

6 Commissioning

6.1 Checking Before Power-On

6.2 System Power-On

7 Man-Machine Interaction

7.1 Scenario in Which SUN2000s Are Connected to the FusionSolar Smart PV Management System

7.1.1 (Optional) Registering an Installer Account

7.1.2 Creating a PV Plant and a User

7.1.3 SmartLogger Networking Scenario

7.2 Scenario in Which SUN2000s Are Connected to Other Management Systems

8 Maintenance

8.2 Routine Maintenance

8.3 Troubleshooting

9 Handling the Inverter

9.1 Removing the SUN2000

9.2 Packing the SUN2000

9.3 Disposing of the SUN2000

A Grid Code

B Device Commissioning

C Setting Power Adjustment Parameters

D Built-in PID Recovery

E Rapid Shutdown

F Resetting Password

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)­M3 User Manual G Setting Dry Contact Scheduling Parameters

H AFCI

I Smart I-V Curve Diagnosis

J Acronyms and Abbreviations

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)M3 User Manual G Setting Dry Contact Scheduling Parameters