HUAWEI SUN2000-50KTL-M3 User guide

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SUN2000-(50KTL-ZHM3, 50KTL-M3)

User Manual

Issue 03

Date 2022-08-30

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-(50KTL-ZHM3, 50KTL-M3) User Manual About This Document

About This Document

Overview

This document describes the SUN2000-50KTL-ZHM3 and SUN2000-50KTL-M3 (also referred to as SUN2000) 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.

Description

Indicates a hazard with a high level of risk which, if not avoided, will result in death or serious injury.

Indicates a hazard with a medium level of risk which, if not avoided, could result in death or serious injury.

Indicates a hazard with a low level of risk which, if not avoided, could result in minor or moderate injury.

SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual About This Document

Symbol Description

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 03 (2022-08-30)

Added the SUN2000-50KTL-M3 model.

Updated 2.1 Product Introduction.

Updated 10 Technical

Updated A Grid Codes.

Added G Rapid Shutdown.

Added H NS Protection.

Issue 02 (2022-08-12)

Updated 5.2 Preparing Cables.

Updated 5.4 Connecting the AC Output Power Cable.

Updated 5.5 Installing the DC Input Power Cable.

Specications.

Updated 10 Technical

Specications.

Issue 01 (2022-05-20)

This issue is the rst ocial release.

SUN2000-(50KTL-ZHM3, 50KTL-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......................................................................................................................................................................... 6

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

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

2.1 Product Introduction.............................................................................................................................................................. 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.................................................................................................................................................................. 12

3 SUN2000 Storage...................................................................................................................14

4 Installation..............................................................................................................................15

4.1 Checking Before Installation............................................................................................................................................. 15

4.2 Tool Preparation.................................................................................................................................................................... 16

4.3 Selecting an Installation Position.................................................................................................................................... 17

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-(50KTL-ZHM3, 50KTL-M3) User Manual Contents

5.5 Installing the DC Input Power Cable.............................................................................................................................. 37

5.6 (Optional) Installing the Smart Dongle........................................................................................................................ 40

5.7 Connecting the Signal Cable............................................................................................................................................. 42

5.7.1 Communication Modes................................................................................................................................................... 44

5.7.2 (Optional) Connecting the RS485 Communications Cable to the SUN2000............................................... 46

5.7.3 (Optional) Connecting the RS485 Communications Cable to the Power Meter.........................................47

5.7.4 (Optional) Connecting the Power Grid Scheduling Signal Cable..................................................................... 48

6 Commissioning.......................................................................................................................50

6.1 Checking Before Power-On................................................................................................................................................50

6.2 System Power-On................................................................................................................................................................. 51

7 Man-Machine Interaction....................................................................................................53

7.1 Scenario in Which SUN2000s Are Connected to the FusionSolar Smart PV Management System.........54

7.1.1 (Optional) Registering an Installer Account............................................................................................................ 54

7.1.2 Creating a PV Plant and a User.................................................................................................................................... 55

7.1.3 SmartLogger Networking Scenario............................................................................................................................. 55

7.2 Scenario in Which SUN2000s Are Connected to Other Management Systems..............................................56

7.3 Energy Control....................................................................................................................................................................... 56

7.3.1 Grid-tied Point Control.................................................................................................................................................... 56

7.3.2 Apparent Power Control on the Inverter Output Side..........................................................................................60

8 Maintenance...........................................................................................................................62

8.1 System Power-O.................................................................................................................................................................62

8.2 Routine Maintenance.......................................................................................................................................................... 63

8.3 Troubleshooting.....................................................................................................................................................................64

8.4 Replacing a Fan..................................................................................................................................................................... 74

9 Handling the Inverter...........................................................................................................77

9.1 Removing the SUN2000..................................................................................................................................................... 77

9.2 Packing the SUN2000..........................................................................................................................................................77

9.3 Disposing of the SUN2000................................................................................................................................................ 77

10 Technical

Specications.....................................................................................................78

A Grid Codes...............................................................................................................................85

B Device Commissioning......................................................................................................... 90

C Built-in PID Recovery............................................................................................................93

D Resetting Password.............................................................................................................. 94

E Setting Dry Contact Scheduling Parameters.................................................................. 95

F AFCI...........................................................................................................................................96

G Rapid Shutdown....................................................................................................................98

H NS Protection.........................................................................................................................99

SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual Contents

I Smart I-V Curve Diagnosis................................................................................................. 100

J Contact Information............................................................................................................101

K Acronyms and Abbreviations........................................................................................... 103

SUN2000-(50KTL-ZHM3, 50KTL-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-(50KTL-ZHM3, 50KTL-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 and turn on the re alarm bell or make an emergency call. Do not enter the building on re in any case.

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

● Tighten the screws to the specied torque using tools when installing the equipment.

● Understand the components and functioning of a grid-tied PV power system and relevant local standards.

● Repaint any paint scratches caused during equipment transportation or installation in a timely manner. Equipment with scratches cannot be exposed to an outdoor environment for a long period of time.

● Do not open the host panel of the equipment.

● You shall not reverse engineer, decompile, disassemble, adapt, add code to the device software or alter the device software in any other way, research the internal implementation of the device, obtain the device software source code, infringe on Huawei's intellectual property, or disclose any device software performance test results.

re, immediately leave the building or the equipment area,

Personal Safety

● If there is a probability of personal injury or equipment damage during operations on the equipment, immediately stop the operations, report the case to the supervisor, and take feasible protective measures.

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

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

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

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

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

operate, and maintain the equipment.

the equipment.

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SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 1 Safety Information

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

● 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 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

● 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.

rst

re may occur.

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SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 1 Safety Information

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

● 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.

re or personal injury.

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.

1.4 Installation Environment Requirements

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

● To prevent re due to high temperature, ensure that the ventilation vents or 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.

ammable or explosive gas or smoke. Do

1.5 Mechanical Safety

Using Ladders

dierent types,

● Use wooden or berglass ladders when you need to perform live working at heights.

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

● 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.

SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 1 Safety Information

● Ensure that the ladder is securely positioned. The recommended angle for a ladder against the oor is 75 degrees, as shown in the following gure. An angle rule can be used to measure the angle.

● 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.

oor, observe the following safety precautions:

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

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SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 1 Safety Information

1.6 Commissioning

When the equipment is powered on for the rst time, ensure that professional personnel set parameters correctly. Incorrect settings may result in inconsistency with local certication and aect the normal operation of the equipment.

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 o the equipment and strictly comply with the safety 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 the delayed discharge label to ensure that the equipment is powered o.

● Turn o the AC and DC switches of the SUN2000 when maintaining the electric equipment or power distribution equipment connected the SUN2000.

● 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 and follow the instructions on

rectied. Failing to

SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 2 Overview

2 Overview

2.1 Product Introduction

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:

● SUN2000-50KTL-ZHM3

● SUN2000-50KTL-M3

Figure 2-1 Model description

Table 2-1 Model description

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

2 Power class 50K: rated power of 50 kW

3 Topology TL: transformerless

4 Region ZH: China

Meaning Value

inverter

SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 2 Overview

ID Meaning Value

5 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 (2) SUN2000 (3) AC power distribution

(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.

Figure 2-3 Power grid types

unit

SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 2 Overview

2.2 Appearance

Figure 2-4 Appearance

(1) LED indicator (2) Front panel

(3) Screws for xing the awning (4) Communications port (COM)

(5) Hole for the DC switch locking screw

(7) Smart Dongle port (4G/WLAN-FE) (8) DC input terminals (PV1–PV8)

(9) Ventilation valve (10) AC output port

(11) Ground point (12) Fan

(6) DC switch (DC SWITCH)

SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 2 Overview

2.3 Label Description

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.

SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 2 Overview

Symbol Name Description

Operation warning Do not remove the DC

input connector or AC output connector with power on.

Weight label The SUN2000 is heavy

and needs to be carried by three persons.

Burn warning on inverter handles

Do not touch the handles within 10 minutes after the inverter is shut down.

Indicator Indicates the SUN2000

operating information.

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-(50KTL-ZHM3, 50KTL-M3) User Manual 2 Overview

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.

Figure 2-5 Schematic diagram

2.4.2 Working Modes

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

Figure 2-6 Working modes

SUN2000-(50KTL-ZHM3, 50KTL-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-(50KTL-ZHM3, 50KTL-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-(50KTL-ZHM3, 50KTL-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-(50KTL-ZHM3, 50KTL-M3) User Manual 4 Installation

4.2 Tool Preparation

Type Tools and Instruments

Install ation

Torque socket and wrench

Hammer drill Drill bit Rubber mallet

Utility knife Marker

Torque wrench Torque screwdriver

Open-end wrench

H4TW0001 (Amphenol)

Cable cutter Wire stripper Diagonal pliers

Hydraulic pliers Heat gun

Crimping tool

H4TC0003 (Amphenol)

SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 4 Installation

Type Tools and Instruments

Steel measuring tape Level Multimeter

Cable tie Heat shrink tubing Vacuum cleaner

Person al protec tive equip ment (PPE)

Goggles Work shoes Dust mask

- -

Protective gloves

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

● Do not install the equipment in an area with strong vibration, noise, or electromagnetic interference.

ammable or explosive materials.

● If inverters are installed in a place with abundant vegetation, in addition to routine weeding, harden the ground underneath the inverters using cement or gravel (recommended area: 3 m x 2.5 m).

SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 4 Installation

● 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).

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.

SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 4 Installation

Installation Space Requirements

● Reserve enough clearance around the SUN2000 to ensure sucient space for installation and heat dissipation.

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)

SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 4 Installation

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

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

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SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 4 Installation

Figure 4-6 Stacked installation (not recommended)

Figure 4-7 Back-to-back 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-(50KTL-ZHM3, 50KTL-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 4-8 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 4-9 Position for binding the security Torx wrench

SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 4 Installation

(1) Security Torx wrench

Figure 4-10 shows the dimensions of the mounting holes for the SUN2000.

Figure 4-10 Mounting bracket dimensions

4.5.1 Support-mounted Installation

Procedure

Step 1 Secure the mounting bracket.

Figure 4-11 Securing the mounting bracket

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SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 4 Installation

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

----End

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 4-12 Expansion bolt composition

(1) Bolt

(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.

(2) Nut (3) Spring washer

at washer. Otherwise, the mounting bracket will

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SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 4 Installation

Figure 4-13 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 4-14 Installing the locking screw for the DC switch

Step 2 Install the SUN2000 onto the mounting bracket.

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SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 4 Installation

Figure 4-15 Installing a SUN2000

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

Figure 4-16 Tightening the nut

Secure the screws on the sides before connecting cables.

----End

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SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 5 Electrical Connections

5 Electrical Connections

5.1 Precautions

When exposed to sunlight, the PV arrays supply 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-(50KTL-ZHM3, 50KTL-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 To ensure that the inverter can be

Component Description Source

modules connected in series.

● The SUN2000 supports the input from eight PV strings.

safely disconnected from the power grid when an exception occurs, connect an AC switch to the AC side of the inverter. Select an appropriate AC switch in accordance with local industry standards and regulations. Huawei recommends the following switch

specications:

Recommended: a three-phase AC circuit breaker with a rated voltage greater than or equal to 500 V AC and a rated current of 125 A.

Prepared by users

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SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 5 Electrical Connections

No. Component Description Source

C Power

meter

[1]

The SUN2000 can connect to the DTSU666-H, DTSU666-HW, and

YDS60-80 power meters.

[2]

Purchased from Huawei

D SUN2000 Select a proper model as required. Purchased from

Huawei

E SmartLogger SmartLogger3000 Purchased from

Huawei

F Smart

Dongle

Note [1]: For details about meter operations, see

Select a proper model as required. Purchased from

Huawei

DTSU666-HW Smart Power Sensor Quick Guide, YDS60-80 Smart Power Sensor Quick Guide, DTSU666H and DTSU666-H 250 A (50 mA) Smart Power Sensor Quick Guide DTSU666-H 100 A and 250 A Smart Power Sensor User Manual

and

Note [2]: SUN2000MA V100R001C20SPC116 and later versions can connect to DTSU666-HW and YDS60-80 power meter.

The cable specications must comply with local standards. Device damage caused by using cables with incorrect specications will not be covered by the warranty.

Table 5-2 Cable description

No.

Cable Type Recommended

Source

Specications

1 DC input

power cable

Common PV cable in the industry

(Recommended model: PV1-F)

● Conductor crosssectional area: 4–6

● Cable outer

Prepare d by users

diameter: 5.5–9 mm

2 AC

output power cable

Outdoor copper-core/ aluminum-core cable

● Conductor crosssectional area: 25–

50 mm2 outdoor copper-core cable

or 35–50 mm

Prepare d by users

outdoor aluminumcore cable

[1]

● Cable outer diameter: 16–38 mm

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No. Cable Type Recommended

3 (Option

al) Signal cable

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

4 PE cable Single-core outdoor

copper-core cable

Note [1]: 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

Specications

● Conductor crosssectional area: 0.2–

1 mm

● Cable outer diameter: 4–11 mm

Conductor crosssectional area ≥ 16

Source

Prepare d by users

Procedure

Step 1 Crimp OT terminals.

● 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.

● 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 silicone sealant or paint be applied around the ground terminal after the PE cable is connected.

● 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.

SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 5 Electrical Connections

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.

Figure 5-3 Connecting the PE cable

(1) Reserved PE point

----End

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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 inverter and the AC switch that directly connects to the inverter. Otherwise, the switch may trip by mistake.

● If an AC switch is used with specications beyond local standards, regulations, or Huawei's recommendations, the switch may fail to turn manner in case of exceptions, causing serious faults.

o in a timely

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

● If the external AC switch can perform earth leakage protection, the rated leakage action current should be greater than or equal to 500 mA.

● If multiple SUN2000s connect to the general residual current device (RCD) through their respective external AC switches, the rated leakage action current of the general RCD should be greater than or equal to the number of SUN2000s multiplied by 500 mA.

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

● If the AC MBUS is used, multi-core cables are recommended, supporting a maximum communication distance of 1000 m. To use other types of AC power cables, contact the Company's technical support.

Requirements for the OT or DT Terminal

● If a copper cable is used, use copper wiring terminals.

● If a copper-clad aluminum cable is used, use copper wiring terminals.

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● If an aluminum alloy cable is used, use copper-aluminum transition wiring

terminals, or aluminum wiring terminals along with copper-aluminum transition spacers.

● Do not connect aluminum wiring terminals to the AC terminal block. Otherwise the electrochemical corrosion will occur and aect the reliability of cable connections.

● Comply with the IEC61238-1 requirements when using copper-aluminum transition wiring terminals, or aluminum wiring terminals along with copperaluminum transition spacers.

● If copper-aluminum transition spacers are used, pay attention to the front and rear sides. Ensure that the aluminum sides of spacers are in contact with aluminum wiring terminals, and copper sides of spacers are in contact with the AC terminal block.

Figure 5-4 Requirements for the OT/DT terminal

Procedure

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

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SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 5 Electrical Connections

Figure 5-5 Removing the AC terminal box

Step 2 Connect the AC output power cable.

● 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 gures are for reference only. Select appropriate cables according to the local standards.

Figure 5-6 Stripping the AC power cable (using a ve-core cable as an example)

SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 5 Electrical Connections

Figure 5-7 Five-core cable (L1, L2, L3, N, and PE)

Figure 5-8 Four-core cable (L1, L2, L3, and PE)

SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 5 Electrical Connections

Figure 5-9 Four-core cable (L1, L2, L3, and N)

Figure 5-10 Three-core cable (L1, L2, and L3)

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Figure 5-11 Wiring requirements

----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-(50KTL-ZHM3, 50KTL-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 shall not exceed 1100 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 5-12 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.

Number of PV Strings

Terminal Selection Number

of PV Strings

Terminal Selection

1 PV1 2 PV1 and PV7

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Procedure

Step 1 Connect the DC power cable.

Number of PV Strings

Terminal Selection Number

of PV Strings

Terminal Selection

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 Amphenol Helios H4 metal terminals and DC connectors supplied with the solar inverter. Using incompatible positive and negative metal terminals and DC connectors may result in serious consequences. The caused device damage is not covered under any warranty.

● You are advised to use the H4TC0003 (Amphenol) crimping tool and do not use it with the positioning block. Otherwise, the metal terminals may be damaged.

● The H4TW0001 (Amphenol) 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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SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 5 Electrical Connections

Figure 5-13 Connecting the DC power cable

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

----End

5.6 (Optional) Installing the Smart Dongle

Procedure

The Smart Dongle is not provided in standard conguration.

● 4G Smart Dongle

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SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 5 Electrical Connections

● If your Smart Dongle is not equipped with a SIM card, prepare a standard SIM card (size: 25 mm x 15 mm) with the capacity greater than or equal to 64 KB.

● When installing the SIM card, determine its installation direction based on the silk screen and arrow on the card slot.

● Press the SIM card in place to lock it, indicating that the SIM card is correctly installed.

● When removing the SIM card, push it inwards to eject it.

● When reinstalling the cover of the Smart Dongle, ensure that the buckle springs back in place.

Figure 5-14 Installing a 4G Smart Dongle

● WLAN-FE Smart Dongle (WLAN Communication)

Figure 5-15 Installing a WLAN-FE Smart Dongle (WLAN communication)

● WLAN-FE Smart Dongle (FE Communication)

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SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 5 Electrical Connections

Figure 5-16 Installing a WLAN-FE Smart Dongle (FE communication)

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

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

SDongleA-05 Smart Dongle Quick Guide (WLAN-FE)

below to obtain the document.

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

SDongleA-03 Quick Guide (4G)

document.

The quick guide is delivered with the Smart Dongle.

5.7 Connecting the Signal Cable

COM Port Pin

Denitions

. You can scan the QR code

. You can scan the QR code below to obtain the

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

SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 5 Electrical Connections

Figure 5-17 Pin denitions

Pin DenitionFunction Description Pin DenitionFunction Description

1 485A1_1 RS485

dierential

signal +

3 485B1_1 RS485

dierential

signal –

5 PE Ground point

on the shield layer

7 485A2 RS485

dierential

signal +

9 485B2 RS485

dierential

signal –

Used to cascade inverters or

2 485A1_2 RS485

dierential

signal + connect to the SmartLogger.

4 485B1_2 RS485

dierential

signal –

- 6 PE Ground

point on the

shield layer

Connects to the RS485 signal port for controlling the power meter at

8 DIN1 Dry contact

for power

grid

scheduling

10 DIN2

the grid-tied point.

Used to cascade inverters or connect to the SmartLogger.

11 - - - 12 DIN3

13 GND GND - 14 DIN4

15 DIN5 NS

protection/ OVGR

Supports functions such as NS

16 GND

protection, and OVGR.

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SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 5 Electrical Connections

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.

Figure 5-18 Securing the signal cable connector

5.7.1 Communication Modes

RS485 Communication

● Smart Dongle networking

Figure 5-19 Smart Dongle networking

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SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 5 Electrical Connections

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

● SmartLogger networking

Figure 5-20 SmartLogger networking

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

● It is recommended that the number of SUN2000s connected to each RS485 route

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.

● In utility-scale scenarios, an isolation transformer must be connected between inverters and loads.

● Commercial and industrial scenarios are supported only in China.

Smart Dongle.

be less than 30.

SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 5 Electrical Connections

Figure 5-21 MBUS communication (utility-scale scenarios)

Figure 5-22 MBUS communication (commercial and industrial scenarios in China)

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-(50KTL-ZHM3, 50KTL-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

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-(50KTL-ZHM3, 50KTL-M3) User Manual 5 Electrical Connections

Figure 5-25 Connecting the cable

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

Figure 5-26 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-(50KTL-ZHM3, 50KTL-M3) User Manual 5 Electrical Connections

Figure 5-27 Connecting the cable

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

Figure 5-28 Securing the signal cable connector

----End

SUN2000-(50KTL-ZHM3, 50KTL-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-(50KTL-ZHM3, 50KTL-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

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

specied range using a multimeter.

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. In areas where the FusionSolar app is not available, or when a third-party management system is used, only the SUN2000 app can be used for commissioning.

● 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 screenshots are for reference only. The actual screens may vary.

● 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-(50KTL-ZHM3, 50KTL-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

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

rst installer account

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

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SUN2000-(50KTL-ZHM3, 50KTL-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

● In the quick settings for SUN2000-50KTL-M3, the grid code is N/A by default (automatic startup is not supported). Set the grid code based on the area where the PV plant is located.

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

Guide

FusionSolar App Quick

7.1.3 SmartLogger Networking Scenario

For details, see

(Inverters + SmartLogger3000), PV Plants Connecting to SmartPVMS Quick Guide (Inverters + SmartLogger3000 + RS485 Networking)

PV Plants Connecting to Huawei Hosting Cloud Quick Guide

and

PV Plants

SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 7 Man-Machine Interaction

Connecting to SmartPVMS Quick Guide (Inverters + SmartLogger3000 + MBUS Networking)

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

7.3 Energy Control

7.3.1 Grid-tied Point Control

Function

Limits or reduces the output power of the PV power system to ensure that the output power is within the

Procedure

Step 1 On the home screen, choose Power adjustment > Grid-tied point control.

specied range.

SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 7 Man-Machine Interaction

Figure 7-5 Grid-tied point control

Table 7-1 Grid-tied point control

Parameter Description

Active power

Unlimited- If this parameter is set to Unlimited, the output power of

the SUN2000 is not limited and the SUN2000 can connect to the power grid at the rated power.

Grid connecti on with zero

Closed-loop controller

● If multiple SUN2000s are cascaded, set this parameter to SDongle/SmartLogger.

● If there is only one SUN2000, set this parameter to Inverter.

power

Limitation mode

● Total power indicates export limitation of the total power at the grid-tied point. (When a single-phase meter is connected, only Total power can be selected.)

● Single-phase power indicates export limitation of the power in each phase at the grid-tied point.

Power adjustment

Species the shortest interval for a single export limitation adjustment.

period

Maximum protection time

Species the time for detecting power meter data. If the Dongle does not detect any power meter data within the preset time, the Dongle delivers the preset value of Active power output limit for fail-safe for protection.

Power raising

Species the step for grid-tied power adjustment.

threshold

Active power output limit for fail-safe

Species the derating value of the SUN2000 active power by percentage. If the Smart Dongle does not detect any meter data or the communication between the Smart Dongle and the SUN2000 is disconnected, the Smart Dongle delivers the derating value of the SUN2000 active power by percentage.

SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 7 Man-Machine Interaction

Parameter Description

Grid connecti on with limited power (kW)

Communicatio n disconnection fail-safe

Communicatio n disconnection detection time

Closed-loop controller

Limitation mode

Maximum grid feed-in power

In the inverter export limitation scenario, if this parameter is set to Enable, the inverter will derate according to the active power derating percentage when the communication between the inverter and the Smart Dongle is disconnected for a period longer than Communication disconnection detection time.

Species the fail-safe detection time for the disconnection between the SUN2000 and the Smart Dongle.

This parameter is displayed when Communication disconnection fail-safe is enabled.

● If multiple SUN2000s are cascaded, set this parameter to SDongle/SmartLogger.

● If there is only one SUN2000, set this parameter to

Inverter.

Total power indicates export limitation of the total power

at the grid-tied point. (When a single-phase meter is connected, only Total power can be selected.)

Single-phase power indicates export limitation of the power in each phase at the grid-tied point.

Species the maximum active power transmitted from the grid-tied point to the power grid.

Power adjustment period

Maximum protection time

Power raising threshold

Power adjustment period

Active power output limit for fail-safe

Species the shortest interval for a single export limitation adjustment.

Species the step for grid-tied power adjustment.

Species the shortest interval for a single export limitation

adjustment.

Species the derating value of the inverter active power by percentage. If the Smart Dongle does not detect any power meter data or the communication between the Smart Dongle and the inverter is disconnected, the Smart Dongle delivers the derating value of the inverter active power by percentage.

SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 7 Man-Machine Interaction

Parameter Description

Grid connecti on with limited power (%)

Communicatio n disconnection fail-safe

Communicatio n disconnection detection time

Closed-loop controller

Limitation mode

PV plant capacity

Species the time for determining the communication disconnection between the inverter and the Smart Dongle. This parameter is displayed when Communication disconnection fail-safe is set to Enable.

● For a single inverter, set Closed-loop controller to Inverter.

● For multiple inverters, Closed-loop controller can only be set to SDongle/SmartLogger.

● Total power indicates export limitation of the total power at the grid-tied point.

● Single-phase power indicates export limitation of the power in each phase at the grid-tied point.

Species the total maximum active power in the inverter cascading scenario.

Maximum grid feed-in power

Maximum protection time

Power raising threshold

Power adjustment period

Active power output limit for fail-safe

Communicatio n disconnection fail-safe

Species the percentage of the maximum active power of the grid-tied point to the PV plant capacity.

Species the step for grid-tied power adjustment.

Species the shortest interval for a single export limitation

adjustment.

SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 7 Man-Machine Interaction

Parameter Description

Shutdo wn at high feed-in

power

Communicatio n disconnection detection time

Shutdown at high feed-in power

Upper feed-in power threshold for inverter shutdown (kW)

High feed-in power duration threshold for triggering inverter shutdown (s)

Species the time for determining the communication disconnection between the inverter and the Smart Dongle. This parameter is displayed when Communication disconnection fail-safe is set to Enable.

● The default value is Disable.

● If this parameter is set to Enable, the inverter shuts down for protection when the grid-connection point power exceeds the threshold and remains in this condition for the specied time threshold.

The default value is 0. This parameter species the power threshold of the grid-connection point for triggering inverter shutdown.

The default value is 20. This parameter species the duration threshold of high feed-in power for triggering inverter shutdown.

● When High feed-in power duration threshold for

triggering inverter shutdown is set to 5. Shutdown at high feed-in power takes precedence.

● When High feed-in power duration threshold for triggering inverter shutdown is set to 20, Grid connection with limited power takes precedence (when Active power control is set to Grid connection with limited power).

Note 1: This parameter is supported only for the AS4777 grid code.

----End

7.3.2 Apparent Power Control on the Inverter Output Side

On the home screen, tap Settings > Power adjustment to set inverter parameters.

NO TE

SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 7 Man-Machine Interaction

Figure 7-6 Apparent power control

Table 7-2 Apparent power

Parameter Description Value Range

Maximum apparent power (kVA)

Species the output upper threshold for the

[Maximum active power, S

]

max

maximum apparent power to adapt to the capacity requirements of standard and customized inverters.

Maximum active power (kW)

Species the output upper threshold for the

[0.1, P

max

]

maximum active power to adapt to dierent market requirements.

The lower threshold for the maximum apparent power is the maximum active power. To lower the maximum apparent power, lower the maximum active power rst.

WARNING

SUN2000-(50KTL-ZHM3, 50KTL-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

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

o the AC switch between the SUN2000 and the power grid.

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

ve minutes after the power-o.

CA UTION

SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 8 Maintenance

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

----End

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 o the system.

Table 8-1 Maintenance checklist

Check Item Check Method Maintenance

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.

Air tightness Check that all terminals and ports are

properly sealed.

Once a year

SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 8 Maintenance

Check Item Check Method Maintenance

Interval

Clear vegetation around the inverters

8.3 Troubleshooting

Alarm severities are dened as follows:

● 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 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

2001 High

Name Severity Cause Solution

Major The PV array is not string input voltage

● Perform inspection and weeding as required.

● Clean the site promptly after weeding.

aecting the grid-tied power

Reduce the number of PV 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

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

corrected, the alarm disappears.

Based on the local wilting season

conguration is

SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 8 Maintenance

ID Name Severity Cause Solution

2002 DC arc

fault

2003 DC arc

fault

2011 String

reverse connecti on

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

Major The PV string power cables

arc or are in poor contact.

Cause ID 1–8: PV strings 1– 8

Major The PV string polarity is

reversed.

Cause ID 1–8: PV strings 1– 8

Check whether the PV string

cables arc or are in poor contact.

Check whether the PV string

cables arc or are in poor contact.

1. Check whether the PV string is connected to the device in reverse polarity. If yes, wait until the PV string current decreases to below 0.5 A, set DC SWITCH to OFF, and adjust the PV string polarity.

2. If the fault persists, reset the device on the local maintenance app or WebUI of the upper-layer controller. Alternatively, you can turn

o

the AC and DC switches, wait for 5 minutes, and then turn on the AC and DC switches.

2012 String

current backfeed

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

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.

SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 8 Maintenance

ID Name Severity Cause Solution

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

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.

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.

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

2. Check whether the AC circuit is disconnected or the AC switch is

o.

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

2. 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.

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

SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 8 Maintenance

ID Name Severity Cause Solution

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.

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

2. If the alarm occurs frequently, check whether the power grid voltage is within the allowed range. If not, contact the local power operator. If yes, modify the power grid overvoltage protection threshold after obtaining the consent of the local power operator.

3. Check whether the peak voltage of the power grid is too high. If the fault occurs frequently and persists for a long time, contact the local power operator.

2035

Grid volt. Imbalan ce

Major Cause ID = 1

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

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

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

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

4. 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.

SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 8 Maintenance

ID Name Severity Cause Solution

2036 Grid

overfreq uency

2037 Grid

underfre quency

Major Cause ID = 1

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

Major Cause ID = 1

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

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

2. 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.

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

2. 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.

SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 8 Maintenance

ID Name Severity Cause Solution

2038 Unstable

grid frequenc y

2039 Output

overcurr ent

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.

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.

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

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

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

2. 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.

2040 Output

DC compon ent overhigh

2051 Abnorm

al residual current

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.

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

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

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

rectied.

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

SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 8 Maintenance

ID Name Severity Cause Solution

2061 Abnorm

al groundin g

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.

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:

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

2. 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.

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

2062

Low insulatio n resistanc e

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.

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

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

3. 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.

SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 8 Maintenance

ID Name Severity Cause Solution

2063 Cabinet

overtem perature

2064 Device

fault

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.

Major Cause ID = 1–15

An unrecoverable fault occurs on a circuit inside the inverter.

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

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

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

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 h

2066 License

expired

Minor Cause ID = 1–6

The upgrade is not completed normally.

Warning Cause ID = 1

● The privilege license has entered the grace period.

● The privilege feature is about to expire.

1. Perform an upgrade again.

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

1. Apply for a new license.

2. Load a new certicate.

SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 8 Maintenance

ID Name Severity Cause Solution

2067 Faulty

power collector

61440 Faulty

monitori ng unit

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.

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

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

3. 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.

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

2. 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.

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

SUN2000-(50KTL-ZHM3, 50KTL-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.

2086

External fan abnorma l

Major Cause ID = 1

The external fan is shortcircuited, the power supply is insucient, or the air channel is blocked.

1. Shut down the fan, turn o the DC switch, check whether the fan blades are damaged, and clear the foreign matter around the fan.

2. Reinstall the fan, turn on the DC switch, and wait for the inverter to start. If the alarm persists after 15 minutes, replace the external fan.

NO TE

CA UTION

SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 8 Maintenance

ID Name Severity Cause Solution

2090 Abnorm

al active power scheduli ng instructi on

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.

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 mapping table. Contact the power grid company to check whether the the mapping table are complete and meet the requirements.

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 the mapping table are complete and meet the requirements.

conguration

congurations in

congurations in the

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

8.4 Replacing a Fan

● Before replacing a fan, power o the inverter.

● When replacing a fan, use insulated tools and wear PPE.

Step 1 Remove the screws from the fan mounting plate and store them properly. Turn the

fan mounting plate until the fan surface is horizontal with the inverter.

NO TICE

SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 8 Maintenance

Figure 8-2 Removing screws from the fan mounting plate

Step 2 Remove the cable tie, loosen the connector, disconnect the cable, and remove the

faulty fan.

Figure 8-3 Removing a faulty fan

Step 3 Install the new fan in the reverse order, bind the fan cable, and reconnect the

cable.

When binding the cable, you are advised to reserve 80 mm at one end of the terminal, fold the rest of the cable and bind it in the middle using a cable tie, and then bind the cable to the cable bridge.

SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 8 Maintenance

Figure 8-4 Binding a cable

----End

NO TICE

SUN2000-(50KTL-ZHM3, 50KTL-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-(50KTL-ZHM3, 50KTL-M3) User Manual 10 Technical Specications

10 Technical Specications

Eciency

Item SUN2000-50KTL-ZHM3 SUN2000-50KTL-M3

Peak eciency 98.50% 98.50%/400 V

98.71%/480 V

Chinese eciency 98.00% -

European

eciency

- 98.24%/400 V

Input

Item

Recommended maximum input DC power

Maximum input voltage

Maximum input current per string

Maximum shortcircuit current per MPPT

SUN2000-50KTL-ZHM3 SUN2000-50KTL-M3

75000 W

1100 V

20 A (one PV string)/30 A (one MPPT)

40 A

98.40%/480 V

Minimum startup voltage

MPP voltage range

200 V

200–1000 V

SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 10 Technical Specications

Item SUN2000-50KTL-ZHM3 SUN2000-50KTL-M3

Full-load MPPT voltage range

Rated input voltage

Maximum

530–800 V (380 V AC/400 V AC) 530–800 V (380 V AC/400 V AC)

625–850 V (480 V AC)

600 V (380 V AC/400 V AC) 600 V (380 V AC/400 V AC)

710 V (480 V AC)

number of inputs

Number of

MPPTs

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

Note b: PV strings connecting to the same MPPT must contain the same quantity and model of PV modules. The voltage dierence between dierent MPPTs must be less than 80 V. It is recommended that the PV string voltage be higher than the lower threshold of the full-load MPPT voltage.

Output

Item

SUN2000-50KTL-ZHM3 SUN2000-50KTL-M3

Rated output power

Maximum apparent power

Maximum active power (cosφ = 1)

Rated output voltage

Maximum output voltage at longterm operation

Rated output current

Maximum output current

50000 W 50000 W

55000 VA 55000 VA

55000 W 55000 W

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

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

277 V AC/480 V AC, 3W+PE

See standards about the local power grid.

76.0 A/380 V

72.2 A/400 V

60.1 A/480 V

84.0 A/380 V

79.8 A/400 V

66.5 A/480 V

SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 10 Technical Specications

Item SUN2000-50KTL-ZHM3 SUN2000-50KTL-M3

Output voltage frequency

Power factor 0.8 leading... 0.8 lagging

Maximum total harmonic distortion

AC THDi

50 Hz/60 Hz

< 3% under rated conditions

Protection

Item SUN2000-50KTL-ZHM3 SUN2000-50KTL-M3

Overvoltage category

Input DC switch Supported

Anti-islanding protection

Output overcurrent protection

PV II/AC III

Supported

Input reverse connection protection

PV string fault detection

DC surge protection

AC surge protection

Insulation resistance detection

Residual current monitoring unit (RCMU)

Supported

Type II

Supported

SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 10 Technical Specications

Display and Communication

Item SUN2000-50KTL-ZHM3 SUN2000-50KTL-M3

Display LED indicators; WLAN+app

RS485 Supported

Built-in WLAN Supported

AC MBUS Supported

DC MBUS Supported

AFCI Supported

PID recovery Supported

General

Item SUN2000-50KTL-ZHM3 SUN2000-50KTL-M3

Dimensions (W x H x D)

Net weight 48 kg

Operating temperature

Relative humidity 0%–100%

Cooling mode Smart air cooling

Maximum operating altitude

Storage temperature

IP rating IP66

Topology Transformerless

Specications

640 mm x 530 mm x 270 mm

–25°C to +60°C

4000 m

–40°C to +70°C

SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 10 Technical Specications

Wireless Communication Parameters

Specications Inverter Built-

in WiFi

Frequency 2400–2483.5

MHz

Protocol standard

WLAN

802.11b/g/n

WLAN-FE Smart Dongle

SDongleA-05:

2400–2483.5 MHz

SDongleA-05:

WLAN

802.11b/g/n

4G Smart Dongle

SDongleA-03-CN:

● Supports LTE-FDD: B1/B3/B8.

● Supports LTE-TDD: B38/B39/B40/B41.

● Supports DC-HSPA+/HSPA+/HSPA/ UMTS: B1/B5/B8/B9.

● Supports TD-SCDMA: B34/B39.

● Supports GSM/GPRS/EDGE: 900 MHz/ 1800 MHz.

SDongleA-03-EU:

● Supports LTE-FDD: B1/B3/B7/B8/B20.

● Supports LTE-TDD: B38/B40.

● Supports WCDMA/HSDPA/HSUPA/ HSPA+: B1/B8.

● Supports GSM/GPRS/EDGE: 900 MHz/ 1800 MHz.

SDongleA-03-CN:

● Supports LTE-FDD (with receive diversity): B1/B3/B5/B8.

● Supports LTE-TDD (with receive diversity): B34/B38/B39/B40/B41.

● Supports WCDMA: B1/B5/B8.

● Supports GSM: 900 MHz/1800 MHz.

● Supports digital audio.

SDongleA-03-EU:

● Supports LTE-FDD (with receive diversity): B1/B3/B7/B8/B20/B28.

● Supports LTE-FDD (with receive diversity): B38/B40/B41.

● Supports WCDMA: B1/B8.

● Supports GSM: 900 MHz/1800 MHz.

● Supports digital audio.

SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 10 Technical Specications

Specications Inverter Built-

in WiFi

Bandwidth 20 MHz/40 MHz

(optional)

WLAN-FE Smart Dongle

20 MHz/40 MHz (optional)

4G Smart Dongle

LTE features:

● Supports a maximum of 3GPP R8 nonCA Cat 4 FDD and TDD.

● Supports 1.4 MHz/3 MHz/5 MHz/10 MHz/15 MHz/20 MHz RF bandwidth.

● Supports MIMO in the downlink.

● LTE-FDD: maximum downlink rate of 150 Mbit/s and maximum uplink rate of 50 Mbit/s

● LTE-TDD: maximum downlink rate of 130 Mbit/s and maximum uplink rate of 30 Mbit/s

UMTS features:

● Supports 3GPP R7 HSDPA+, HSDPA, HSUPA, and WCDMA.

● Supports QPSK and 16QAM modulation.

● HSDPA+: maximum downlink rate of 21 Mbit/s

● HSUPA: maximum uplink rate of 5.76 Mbit/s

● WCDMA: maximum downlink rate of 384 kbit/s and maximum uplink rate of 384 kbit/s

GSM features:

GPRS:

● Supports GPRS multislot class 12.

● Coding schemes: CS-1, CS-2, CS-3, and CS-4

● Maximum downlink rate: 85.6 kbit/s; maximum uplink rate: 85.6 kbit/s

EDGE:

● Supports EDGE multislot class 12.

● Supports GMSK and 8-PSK modulation and coding schemes.

● Downlink coding format: MCS 1–9

● Uplink coding format: MCS 1–9

● Maximum downlink rate: 236.8 kbit/s; maximum uplink rate: 236.8 kbit/s

SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual 10 Technical Specications

Specications Inverter Built-

in WiFi

Maximum

≤ 20 dBm EIRP ≤ 20 dBm EIRP ● Class 4 (33 dBm±2 dB), EGSM900

transmit power

WLAN-FE Smart Dongle

4G Smart Dongle

frequency band

● Class 1 (30 dBm±2 dB), DCS1800 frequency band

● Class E2 (27 dBm±3 dB), EGSM900 8PSK

● Class E2 (26 dBm±3 dB), DCS1800 8PSK

● Class 3 (24 dBm+1/–3 dB), WCDMA frequency band

● Class 3 (23 dBm±2 dB), LTE-FDD frequency band

● Class 3 (23 dBm±2 dB), LTE-TDD frequency band

NO TE

SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual A Grid Codes

A Grid Codes

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

No. Grid Code Description SUN2000-50KTL-

ZHM3

1 NB/T 32004 China Golden Sun low-

voltage power grid

2 CHINA-MV480 China medium-voltage

standard power grid

3 CHINA-MV China medium-voltage

standard power grid

4 VDE-AR-N-4105 Germany low-voltage

power grid

5 UTE C 15-712-1(A) France mainland

power grid

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

grid

7 UTE C 15-712-1(C) France island power

grid

8 VDE 0126-1-1-GR(A) Greece mainland

power grid

Supported -

- Supported

SUN2000-50KTLM3

9 VDE 0126-1-1-GR(B) Greece island power

grid

10 VDE-AR-N4110 Germany medium-

voltage power grid (230 V)

11 BDEW-MV Germany medium-

voltage power grid

- Supported

SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual A Grid Codes

No. Grid Code Description SUN2000-50KTL-

ZHM3

SUN2000-50KTLM3

12 CEI0-21 Italy power grid - Supported

13 EN50438-CZ Czech Republic power

- Supported

grid

14 RD1699/661 Spain low-voltage

- Supported

power grid

15 RD1699/661-MV480 Spain medium-voltage

- Supported

power grid

16 EN50438-NL Netherlands power

- Supported

grid

17 C10/11 Belgium power grid - Supported

18 IEC61727 IEC 61727 low-voltage

- Supported

grid-tied (50 Hz)

19 CEI0-16 Italy power grid - Supported

20 TAI-PEA Thailand grid-tied

- Supported

standard

21 TAI-MEA Thailand grid-tied

standard

22 VDE-AR-N4110-MV480 Germany medium-

voltage standard power grid

23 BDEW-MV480 Germany medium-

voltage standard power grid

24 IEC61727-MV480 IEC 61727 medium-

voltage grid-tied (50 Hz)

25 UTE C 15-712-1-MV480 France island power

grid

26 TAI-PEA-MV480 Thailand medium-

voltage grid-tied (PEA)

27 TAI-MEA-MV480 Thailand medium-

voltage grid-tied (MEA)

28 EN50438-DK-MV480 Denmark medium-

voltage grid-tied

- Supported

29 EN50438-TR-MV480 Turkey medium-

- Supported

voltage power grid

SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual A Grid Codes

No. Grid Code Description SUN2000-50KTL-

ZHM3

30 EN50438-TR Turkey low-voltage

- Supported

power grid

31 C11/C10-MV480 Belgium medium-

- Supported

voltage power grid

32 Philippines Philippines low-voltage

- Supported

power grid

33 Philippines-MV480 Philippines medium-

- Supported

voltage power grid

34 NRS-097-2-1 South Africa standard

- Supported

power grid

35 NRS-097-2-1-MV480 South Africa medium-

- Supported voltage standard power grid

36 IEC61727-60Hz IEC 61727 low-voltage

- Supported grid-tied (60 Hz)

37 IEC61727-60Hz-MV480 IEC 61727 medium-

- Supported voltage grid-tied (60 Hz)

SUN2000-50KTLM3

38 ANRE Romania low-voltage

- Supported power grid

39 PO12.3-MV480 Spain medium-voltage

- Supported power grid

40 EN50438_IE-MV480 Ireland medium-

- Supported voltage power grid

41 EN50438_IE Ireland low-voltage

- Supported power grid

42 CEI0-16-MV480 Italy medium-voltage

- Supported power grid

43 PO12.3 Spain low-voltage

- Supported power grid

44 CEI0-21-MV480 Italy medium-voltage

- Supported power grid

45 EN50549-LV Ireland power grid - Supported

46 EN50549-MV480 Ireland medium-

- Supported voltage power grid

47 Jordan-Transmission Jordan low-voltage

- Supported power grid

SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual A Grid Codes

No. Grid Code Description SUN2000-50KTL-

ZHM3

48 Jordan-Transmission-

MV480

Jordan mediumvoltage power grid

- Supported

SUN2000-50KTLM3

49 ABNT NBR 16149 Brazil power grid - Supported

50 ABNT NBR 16149-

MV480

51 SA_RPPs South Africa low-

Brazil medium-voltage power grid

- Supported

- Supported voltage power grid

52 SA_RPPs-MV480 South Africa medium-

- Supported voltage power grid

53 SAUDI Saudi Arabia power

- Supported grid

54 SAUDI-MV480 Saudi Arabia power

- Supported grid

55 VDE-AR-N4120-HV VDE 4120 standard

- Supported power grid

56 VDE-AR-N4120-HV480 VDE 4120 standard

- Supported power grid

57 Vietnam Vietnam power grid - Supported

58 Vietnam-MV480 Vietnam power grid - Supported

59 ARGENTINA-MV480 Argentina medium-

- Supported voltage power grid

60 EN50438-NL-MV480 Netherlands medium-

- Supported voltage power grid

61 NTS Spain power grid - Supported

62 NTS-MV480 Spain medium-voltage

- Supported power grid

63 SINGAPORE Singapore low-voltage

- Supported power grid

64 SINGAPORE-MV480 Singapore medium-

- Supported voltage power grid

65 C10/11-MV400 Belgium medium-

- Supported voltage power grid

66 EN50549-PL Poland power grid - Supported

67 EN50549-MV400 Ireland new standard

- Supported power grid

SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual A Grid Codes

No. Grid Code Description SUN2000-50KTL-

ZHM3

68 ABNT NBR 16149-

LV127

69 Mexico-LV220 Mexico low-voltage

Brazil low-voltage power grid

- Supported

SUN2000-50KTLM3

power grid

70 Philippines-LV220-50Hz Philippines low-voltage

- Supported power grid (50 Hz)

71 Philippines-LV220-60Hz Philippines low-voltage

- Supported power grid (60 Hz)

72 Pakistan Pakistan power grid - Supported

SUN2000-(50KTL-ZHM3, 50KTL-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-(50KTL-ZHM3, 50KTL-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.

● When connecting to the SUN2000 directly from the mobile phone, keep the mobile phone visible within 3 meters of the SUN2000 to ensure the communication quality between the app and 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-(50KTL-ZHM3, 50KTL-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.

● Use the initial password upon rst power-on and change it immediately after login. To ensure account security, change the password periodically and keep the new password in mind. Not changing the initial password may cause password disclosure. A password left unchanged for a long period of time may be stolen or cracked. If a password is lost, devices cannot be accessed. In these cases, the user is liable for any loss caused to the PV plant.

● When 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,

----End

NO TICE

NO TE

SUN2000-(50KTL-ZHM3, 50KTL-M3) User Manual C Built-in PID Recovery

C 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.

Procedure

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

parameters.

Figure C-1 Setting PID suppression parameters

● 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

HUAWEI SUN2000-50KTL-M3 User guide

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 Product Introduction

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

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

7.3 Energy Control

7.3.1 Grid-tied Point Control

7.3.2 Apparent Power Control on the Inverter Output Side

8 Maintenance

8.2 Routine Maintenance

8.3 Troubleshooting

8.4 Replacing a Fan

9 Handling the Inverter

9.1 Removing the SUN2000

9.2 Packing the SUN2000

9.3 Disposing of the SUN2000

A Grid Codes

B Device Commissioning

C Built-in PID Recovery