Huawei SUN2000-(8KTL-20KTL)-M2 User Manual

SUN2000-(8KTL-20KTL)-M2

User Manual

Issue

Date

2020-07-02

HUAWEI TECHNOLOGIES CO., LTD.

Issue 01 (2020-07-02)

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 specified in the contract, all statements, information, and recommendations in this document are provided "AS IS" without warranties, guarantees or representations of any kind, either express or implied.

The information in this document is subject to change without notice. Every effort has been made in the preparation of this document to ensure accuracy of the contents, but all statements, information, and recommendations in this document do not constitute a warranty of any kind, express or implied.

Huawei Technologies Co., Ltd.

Address:

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

Website:

https://e.huawei.com

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SUN2000-(8KTL-20KTL)-M2 User Manual

About This Document

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iii

Purpose

Symbol

Description

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

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

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

About This Document

This document describes the SUN2000-8KTL-M2, SUN2000-10KTL-M2, SUN2000-12KTL-M2, SUN2000-15KTL-M2, SUN2000-17KTL-M2, and SUN2000-20KTL-M2 (SUN2000 for short) in terms of installation, electrical connections, commissioning, maintenance, and troubleshooting. Read this document through, understand the safety information, and get familiar with the functions and features of the SUN2000 before installing and operating it.

The SUN2000-8KTL-M2 and SUN2000-10KTL-M2 inverters are applicable only to Australia.

Intended Audience

This document is intended for:



Installers



Users

Symbol Conventions

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

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About This Document

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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 updates made in previous issues.

Issue 01 (2020-07-02)

This issue is used for first office application (FOA).

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Contents

About This Document .............................................................................................................. iii

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 ............................................................................................................................................................................... 11

2.3 Label Description .................................................................................................................................................................... 13

2.3.1 Enclosure Labels .................................................................................................................................................................. 13

2.3.2 Product Nameplate ............................................................................................................................................................ 14

2.4 Working Principles ................................................................................................................................................................. 15

2.4.1 Circuit Diagram .................................................................................................................................................................... 15

2.4.2 Working Modes ................................................................................................................................................................... 15

3 Storage .................................................................................................................................... 18

4 Installation ............................................................................................................................. 19

4.1 Checking Before Installation .............................................................................................................................................. 19

4.2 Tools ............................................................................................................................................................................................ 20

4.3 Determining the Installation Position ............................................................................................................................. 21

4.3.1 Environment Requirements ............................................................................................................................................. 21

4.3.2 Space Requirements........................................................................................................................................................... 22

4.4 Moving an Inverter ................................................................................................................................................................ 25

4.5 Installing the Mounting Bracket ....................................................................................................................................... 26

4.5.1 Wall-mounted Installation .............................................................................................................................................. 27

4.5.2 Support-mounted Installation ........................................................................................................................................ 30

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5 Electrical Connections ......................................................................................................... 33

5.1 Preparing for Installation .................................................................................................................................................... 34

5.2 Connecting the PE cable ...................................................................................................................................................... 37

5.3 Connecting the AC Output Power Cable ....................................................................................................................... 39

5.4 Connecting the DC input power cable............................................................................................................................ 43

5.5 (Optional) Installing the Smart Dongle ......................................................................................................................... 48

5.6 (Optional) Installing the Signal Cable ............................................................................................................................ 49

5.6.1 Connecting the RS485 Communications Cable (Inverter Cascading) .............................................................. 52

5.6.2 Connecting the RS485 Communications Cable (Smart Power Sensor) .......................................................... 53

5.6.3 Connecting the Rapid shutdown signal cable .......................................................................................................... 56

5.6.4 Connecting the Power Grid Scheduling Signal Cable ............................................................................................ 58

6 Commissioning ...................................................................................................................... 60

6.1 Check Before Power-On ....................................................................................................................................................... 60

6.2 Powering On the System ..................................................................................................................................................... 61

7 Man-Machine Interaction ................................................................................................... 66

7.1 App Commissioning ............................................................................................................................................................... 66

7.1.1 Downloading the FusionSolar App ............................................................................................................................... 66

7.1.2 (Optional) Registering an Installer Account ............................................................................................................. 67

7.1.3 Creating a PV Plant and a User ..................................................................................................................................... 68

7.1.4 (Optional) Setting the Physical Layout of the Smart PV Optimizers .............................................................. 69

7.1.5 Detect optimizer disconnection ..................................................................................................................................... 71

7.2 Parameters Settings .............................................................................................................................................................. 72

7.2.1 Energy Control ..................................................................................................................................................................... 72

7.2.1.1 Grid-tied Point Control .................................................................................................................................................. 73

7.2.2 AFCI .......................................................................................................................................................................................... 76

7.2.3 IPS Check (for Italy CEI0-21 Grid Code Only) .......................................................................................................... 77

7.3 SmartLogger Networking Scenario .................................................................................................................................. 79

8 Maintenance .......................................................................................................................... 80

8.1 System Power-Off .................................................................................................................................................................. 80

8.2 Routine Maintenance ............................................................................................................................................................ 81

8.3 Troubleshooting ...................................................................................................................................................................... 82

9 Handling the Inverter .......................................................................................................... 94

9.1 Removing a SUN2000 ........................................................................................................................................................... 94

9.2 Packing the SUN2000 ........................................................................................................................................................... 94

9.3 Disposing of the SUN2000 .................................................................................................................................................. 94

10 Technical Data .................................................................................................................... 95

10.1 SUN2000 Technical Specifications ................................................................................................................................. 95

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10.2 Optimizer Technical Specifications ............................................................................................................................. 100

A Grid Codes ........................................................................................................................... 103

B Device Commissioning ..................................................................................................... 107

C Resetting Password ........................................................................................................... 111

D Rapid Shutdown ................................................................................................................ 114

E Locating Insulation Resistance Faults .......................................................................... 116

F Acronyms and Abbreviations .......................................................................................... 120

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1 Safety Information

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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.

1 Safety Information

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 specifications. Otherwise, the equipment may become faulty, and the resulting equipment malfunction, component damage, personal injuries, or property damage are not covered under the warranty.

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 specified in this document



Installation or use in environments which are not specified in relevant international or national standards



Unauthorized modifications 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, fire, and storms



Damage caused during transportation by the customer

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Storage conditions that do not meet the requirements specified in this document

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 fire, immediately leave the building or the equipment area, and turn on the fire alarm bell or make an emergency call. Do not enter the building on fire in any case.



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



Tighten the screws using tools when installing the equipment.



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

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 qualified professionals or trained personnel are allowed to install, operate, and maintain the equipment.

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

Only qualified professionals are allowed to remove safety facilities and inspect the equipment.



Personnel who will operate the equipment, including operators, trained personnel, and professionals, should possess the local national required qualifications 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 first 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 fire may occur.



Ensure that all electrical connections comply with local electrical standards.



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



Ensure that the cables you prepared meet local regulations.

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

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 fire or personal injury.



Use dedicated insulated tools when performing high-voltage operations.

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

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

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

Cabling



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



Bind cables of the same type together. When routing cables of different types, 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 specifications.

1.4 Installation Environment Requirements



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



To prevent fire 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 flammable or explosive gas or smoke. Do not perform any operation on the equipment in such environments.

1.5 Mechanical Safety

Using Ladders



Use wooden or fiberglass ladders when you need to perform live working at heights.

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



Before using a ladder, check that it is intact and confirm its load bearing capacity. Do not overload it.



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



Ensure that the ladder is securely positioned. The recommended angle for a ladder against the floor is 75 degrees, as shown in the following figure. 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 floor, observe the following safety precautions:



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.

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

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

1.6 Commissioning

When the equipment is powered on for the first time, ensure that professional personnel set parameters correctly. Incorrect settings may result in inconsistency with local certification and affect 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 off the equipment and strictly comply with the safety precautions in this document and relevant documents.



Maintain the equipment with sufficient knowledge of this document and using proper tools and testing equipment.



Before maintaining the equipment, power it off and follow the instructions on the delayed discharge label to ensure that the equipment is powered off.



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 rectified. Failing to do so may escalate faults or damage the equipment.

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2.1 Product Introduction

Function

The SUN2000 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.

2 Overview

Models

This document involves the following product models:



SUN2000-8KTL-M2



SUN2000-10KTL-M2



SUN2000-12KTL-M2



SUN2000-15KTL-M2



SUN2000-17KTL-M2



SUN2000-20KTL-M2

The SUN2000-8KTL-M2 and SUN2000-10KTL-M2 inverters are applicable only to Australia.

Figure 2-1 Model description (SUN2000-20KTL-M2 is used as an example)

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Table 2-1 Model description

Icon

Meaning

Description

Product

SUN2000: three-phase grid-tied PV string inverter

Power level



8K: The rated power is 8 kW.



10K: The rated power is 10 kW.



12K: The rated power is 12 kW.



15K: The rated power is 15 kW.



17K: The rated power is 17 kW.



20K: The rated power is 20 kW.

Topology

TL: transformerless

Product code

M2: the product series with the 1080 V DC input voltage

Network Application

The SUN2000 applies to grid-tied PV systems for residential rooftops and small ground plants. Typically, a grid-tied system consists of the PV string, SUN2000, AC switch, and alternating current distribution unit (ACDU).

Figure 2-2 Networking application - Single inverter scenario (optional in dashed boxes)

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Figure 2-3 Networking application - Inverter cascading scenario (optional in dashed

(A) PV string

(B) DC switch

(D) AC switch

(E) ACDU

(F) Smart Power Sensor

(G) Power grid

(H) 4G Smart Dongle

(I) WLAN-FE Smart Dongle

(J) Router

(K) FusionSolar management system

(L) FusionSolar APP

(M) Load

(N) Ripple Control Device

(O) Rapid shutdown switch

boxes)



indicates a power cable, indicates a signal cable, indicates wireless

communication.



If the inverter is connected to the FusionSolar app over its built-in WiFi network, only local commissioning can be performed.



In the RS485 cascading communication networking, the master inverter model is SUN2000-(3KTL-20KTL)-M2 and SUN2000-(3KTL-20KTL)-M0, and the slave inverter model can be SUN2000-(3KTL-20KTL)-M2, SUN2000-(3KTL-20KTL)-M0, SUN2000-50KTL/60KTL/65KTL-M0, SUN2000-29.9KTL/36KTL, or SUN2000-33KTL-A.

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(P) Smart PV optimizer

Supported Power Grids

Power grid types supported by the SUN2000 include TN-S, TN-C, TN-C-S, TT, and IT.

Figure 2-4 Supported power grids

 

In a TT power grid, the N-PE voltage should be lower than 30 V. In an IT power grid, you need to set isolation settings to input not grounded, with a

transformer.

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2.2 Appearance

(1) LED indicator

(2) Front panel

(3) Mounting plate

(4) Heat sink

(5) Ventilation valve

(6) Ground screw

(7) AC output port (AC)

(8) Communication port (COM)

(9) Smart Dongle port (GPRS/4G/WLAN-FE)

(10) DC input terminals (PV4+/PV4–) (11) DC input terminals (PV3+/PV3–)

(12) DC input terminals (PV2+/PV2–)

(13) DC input terminals (PV1+/PV1–)

(14) DC switch (DC SWITCH)

(15) Screw hole for the DC switch (for Australia only)

2.3 Label Description

2.3.1 Enclosure Labels

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Symbol

Name

Meaning

Operation warning

Do not remove the DC input connector or the AC output connector when the SUN2000 is running.

SUN2000 serial number (SN) label

Indicates the SUN2000 SN.

SUN2000 MAC address label

Indicates the MAC address.

QR code label for SUN2000 WiFi connection

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

2.3.2 Product Nameplate

Figure 2-6 Nameplate (SUN2000-20KTL-M2 as an example)

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(1) Trademark and product model

(2) Important technical specifications

(3) Compliance symbols

(4) Company name and country of manufacture

The nameplate figure is for reference only.

2.4 Working Principles

2.4.1 Circuit Diagram

Four PV strings connect to the SUN2000, and their maximum power points are tracked by two maximum power point tracking (MPPT) circuits. The SUN2000 converts DC power into three-phase AC power through an inverter circuit. Surge protection is supported on both the DC and AC sides.

Figure 2-7 SUN2000 conceptual diagram

2.4.2 Working Modes

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

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Figure 2-8 Working modes

Working Mode

Description

Standby

The SUN2000 enters Standby mode when the external environment does not meet the operating requirements. In Standby mode:



The SUN2000 continuously performs status check and enters the Operating mode once the operating requirements are met.



The SUN2000 enters Shutdown mode after detecting a shutdown command or a fault after startup.

Table 2-3 Working mode description

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Working Mode

Description

Operating

In Operating mode:



The SUN2000 converts DC power from PV strings into AC power and feeds the power to the power grid.



The SUN2000 tracks the maximum power point to maximize the PV string output.



If the SUN2000 detects a fault or a shutdown command, it enters the Shutdown mode.



The SUN2000 enters Standby mode after detecting that the PV string output power is not suitable for connecting to the power grid for generating power.

Shutdown



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



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

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3 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 (non-condensing).



The SUN2000 should be stored in a clean and dry place and be protected 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.



Periodic inspections are required during the storage. Replace the packing materials if necessary.



If the SUN2000 has been long-term stored, inspections and tests should be conducted by qualified personnel before it is put into use.

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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.

4 Installation

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.

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Type

Tool

Installa tion Tools

Hammer drill

Drill bit: Φ8 mm and Φ6 mm

Socket wrench set

Torque screwdriver Phillips head: M3

Diagonal pliers

Wire stripper

Removal wrench Model: PV-MS-HZ

Open-end Wrench; manufacturer:

Staubli

Rubber mallet

Utility knife

Cable cutter

Crimping tool Model:

PV-CZM-22100; manufacturer: Staubli

Multimeter DC voltage

measurement range ≥ 1100 V DC

Vacuum cleaner

Marker

Measuring tape

Bubble or digital level

Cord end terminal crimper

4.2 Tools

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Type

Tool

Heat shrink tubing

Heat gun

Cable tie

Hydraulic pliers

PPE

Safety gloves

Safety goggles

Anti-dust respirator

Safety shoes

4.3 Determining the Installation Position

4.3.1 Environment Requirements

Basic Requirements



The SUN2000 is protected to IP65 and can be installed indoors or outdoors.



Do not install the SUN2000 in a place where personnel are easy to come into contact with its enclosure and heat sinks, because these parts are extremely hot during operation.



Do not install the SUN2000 in areas with flammable or explosive materials.



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



Do not install the SUN2000 outdoors in salt areas because it will be corroded there and may cause fire. A salt area refers to the region within 500 meters from the coast or prone to sea breeze. The regions prone to sea breeze vary depending on weather conditions (such as typhoons and monsoons) or terrains (such as dams and hills).



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



Recommended: Install the SUN2000 in a sheltered place or a place with an awning.

Mounting Structure Requirements



The mounting structure where the SUN2000 is installed must be fireproof.



Do not install the SUN2000 on flammable building materials.

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

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.

4.3.2 Space Requirements

Installation Angle Requirements

The SUN2000 can be wall-mounted or pole-mounted. The installation angle requirements are as follows:



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



Do not install the SUN2000 at forward tilted, excessive back tilted, side tilted, horizontal, or upside down positions.

Figure 4-1 Installation tilts

Installation Space Requirements



Reserve enough space around the SUN2000 to ensure sufficient space for installation and heat dissipation.

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