Huawei SUN2000 Series User manual

SUN2000-(12KTL-25KTL)-M5 Series
User Manual
Issue 01
Date 2022-06-15
HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.

Copyright © Huawei Digital Power Technologies Co., Ltd. 2022. All rights reserved.
No part of this document may be reproduced or transmitted in any form or by any means without prior
written consent of Huawei Digital Power Technologies Co., Ltd.
Trademarks and Permissions
and other Huawei trademarks are the property 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
Digital Power Technologies Co., Ltd. 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 Digital Power Technologies Co., Ltd.
Address: Huawei Digital Power Antuoshan Headquarters
Futian,Shenzhen 518043
People's Republic of China
Website: https://e.huawei.com
Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd. i

About This Document
Purpose
This document describes the SUN2000-12KTL-M5, SUN2000-15KTL-M5,
SUN2000-17KTL-M5, SUN2000-20KTL-M5, SUN2000-25KTL-M5, SUN2000-15KTL-
ZHM5, SUN2000-17KTL-ZHM5, SUN2000-20KTL-ZHM5, and SUN2000-25KTL-
ZHM5 (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 safety
precautions as well as features and functions of the SUN2000 provided in this
document.
Intended Audience
This document is intended for:
● Installers
● Users
Symbol Conventions
The symbols that may be found in this document are dened as follows.
Symbol Description
Indicates a hazard with a high level of risk which, if not
avoided, will result in death or serious injury.
Indicates a hazard with a medium level of risk which, if not
avoided, could result in death or serious injury.
Indicates a hazard with a low level of risk which, if not
avoided, could result in minor or moderate injury.
Indicates a potentially hazardous situation which, if not
avoided, could result in equipment damage, data loss,
performance deterioration, or unanticipated results.
NOTICE is used to address practices not related to personal
injury.
SUN2000-(12KTL-25KTL)-M5 Series
User Manual About This Document
Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd. ii

Symbol Description
Supplements 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 (2022-06-15)
This issue is used for rst oce application (FOA).
SUN2000-(12KTL-25KTL)-M5 Series
User Manual About This Document
Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd. iii

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............................................................................................................................................................................. 10
2.3 Label Description.................................................................................................................................................................. 12
2.4 Working Principles................................................................................................................................................................ 12
2.4.1 Working Modes.................................................................................................................................................................. 12
2.4.2 Circuit Diagram.................................................................................................................................................................. 13
3 SUN2000 Storage...................................................................................................................15
4 Installation..............................................................................................................................16
4.1 Checking Before Installation............................................................................................................................................. 16
4.2 Tools.......................................................................................................................................................................................... 17
4.3 Determining the Installation Position............................................................................................................................18
4.3.1 Environment Requirements............................................................................................................................................18
4.3.2 Space Requirements......................................................................................................................................................... 19
4.4 Moving an Inverter............................................................................................................................................................... 20
4.5 Installing an Inverter............................................................................................................................................................21
4.6 (Optional) Installing a Junction Box.............................................................................................................................. 23
5 Electrical Connections.......................................................................................................... 25
5.1 Precautions.............................................................................................................................................................................. 25
5.2 Preparing Cables................................................................................................................................................................... 26
5.3 Connecting the Ground Cable.......................................................................................................................................... 28
5.4 Installing DC Input Power Cables....................................................................................................................................31
SUN2000-(12KTL-25KTL)-M5 Series
User Manual Contents
Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd. iv

5.5 Installing AC Output Power Cables and Signal Cables............................................................................................ 34
5.6 (Optional) Installing the Smart Dongle and Anti-theft Components................................................................ 38
6 Commissioning.......................................................................................................................39
6.1 Check Before Power-On...................................................................................................................................................... 39
6.2 Powering On the System....................................................................................................................................................40
7 Man-Machine Interactions.................................................................................................. 45
7.1 App Commissioning............................................................................................................................................................. 45
7.1.1 Downloading the FusionSolar App..............................................................................................................................45
7.1.2 (Optional) Registering an Installer Account............................................................................................................ 46
7.1.3 Creating a PV Plant and a User.................................................................................................................................... 47
7.1.4 (Optional) Setting the Physical Layout of the Smart PV Optimizers.............................................................. 47
7.1.5 Detecting Optimizer Disconnection............................................................................................................................ 47
7.2 Parameters Settings............................................................................................................................................................. 48
7.2.1 Energy Control.................................................................................................................................................................... 48
7.2.1.1 Grid-tied Point Control................................................................................................................................................. 48
7.2.1.2 Apparent Power Control on the Inverter Output Side...................................................................................... 53
7.2.2 AFCI........................................................................................................................................................................................ 54
8 Maintenance...........................................................................................................................56
8.1 Powering O the System................................................................................................................................................... 56
8.2 Routine Maintenance.......................................................................................................................................................... 56
8.3 Troubleshooting..................................................................................................................................................................... 57
8.4 Replacing a Fan..................................................................................................................................................................... 67
9 Handling the Inverter...........................................................................................................69
9.1 Removing the SUN2000..................................................................................................................................................... 69
9.2 Packing the SUN2000..........................................................................................................................................................69
9.3 Disposing of the SUN2000................................................................................................................................................ 69
10 Technical Specications.....................................................................................................70
10.1 SUN2000-(15KTL-25KTL)-ZHM5 Technical Specications................................................................................... 70
10.2 SUN2000-(12KTL-25KTL)-M5 Technical Specications.........................................................................................74
A Grid Codes...............................................................................................................................79
B Device Commissioning......................................................................................................... 81
C Resetting Password...............................................................................................................83
D Locating Insulation Resistance Faults............................................................................. 84
E Rapid Shutdown.................................................................................................................... 88
F NS Protection..........................................................................................................................89
G Precongured Certicate Disclaimer............................................................................... 90
H Acronym and Abbreviation................................................................................................ 91
SUN2000-(12KTL-25KTL)-M5 Series
User Manual Contents
Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd. v

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 specied in this document
● Installation or use in environments which are not specied in relevant
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
SUN2000-(12KTL-25KTL)-M5 Series
User Manual 1 Safety Information
Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd. 1

General Requirements
D ANGER
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 re, immediately leave the building or the equipment area,
and turn on the re alarm bell or make an emergency call. Do not enter the
building on 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.
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 qualied professionals or trained personnel are allowed to install,
operate, and maintain the equipment.
● Only qualied professionals are allowed to remove safety facilities and inspect
the equipment.
SUN2000-(12KTL-25KTL)-M5 Series
User Manual 1 Safety Information
Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd. 2

● 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).
NO TE
● Professionals: personnel who are trained or experienced in equipment operations
and are clear of the sources and degree of various potential hazards in equipment
installation, operation, and maintenance
● Trained personnel: personnel who are technically trained, have required experience,
are aware of possible hazards on themselves in certain operations, and are able to
take protective measures to minimize the hazards on themselves and other people
● Operators: operation personnel who may come in contact with the equipment,
except trained personnel and professionals
1.3 Electrical Safety
Grounding
● For the equipment that needs to be grounded, install the ground cable rst
when installing the equipment and remove the ground cable last when
removing the equipment.
● Do not damage the ground conductor.
● Do not operate the equipment in the absence of a properly installed ground
conductor.
● Ensure that the equipment is connected permanently to the protective
ground. Before operating the equipment, check its electrical connection to
ensure that it is securely grounded.
General Requirements
D ANGER
Before connecting cables, ensure that the equipment is intact. Otherwise, electric
shocks or re may occur.
● Ensure that all electrical connections comply with local electrical standards.
● Obtain approval from the local electric utility company before using the
equipment in grid-tied mode.
● Ensure that the cables you prepared meet local regulations.
● Use dedicated insulated tools when performing high-voltage operations.
SUN2000-(12KTL-25KTL)-M5 Series
User Manual 1 Safety Information
Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd. 3

AC and DC Power
D ANGER
Do not connect or disconnect power cables with power on. Transient contact
between the core of the power cable and the conductor will generate electric arcs
or sparks, which may cause re or personal injury.
● Before making electrical connections, switch o the disconnector on the
upstream device to cut o the power supply if people may contact energized
components.
● Before connecting a power cable, check that the label on the power cable is
correct.
● If the equipment has multiple inputs, disconnect all the inputs before
operating the equipment.
Cabling
● When routing cables, ensure that a distance of at least 30 mm exists between
the cables and heat-generating components or areas. This prevents damage
to the insulation layer of the cables.
● Bind cables of the same type together. When routing cables of dierent 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 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 ammable 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 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-(12KTL-25KTL)-M5 Series
User Manual 1 Safety Information
Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd. 4

● 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 oor, 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.
● When moving the equipment by hand, wear protective gloves to prevent
injuries.
SUN2000-(12KTL-25KTL)-M5 Series
User Manual 1 Safety Information
Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd. 5

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
D ANGER
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 o and follow the instructions on
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 rectied. Failing to
do so may escalate faults or damage the equipment.
SUN2000-(12KTL-25KTL)-M5 Series
User Manual 1 Safety Information
Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd. 6

2 Overview
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.
Models
This document involves the following product models:
● SUN2000-12KTL-M5
● SUN2000-15KTL-M5
● SUN2000-17KTL-M5
● SUN2000-20KTL-M5
● SUN2000-25KTL-M5
● SUN2000-15KTL-ZHM5
● SUN2000-17KTL-ZHM5
● SUN2000-20KTL-ZHM5
● SUN2000-25KTL-ZHM5
Figure 2-1 Model description (SUN2000-15KTL-ZHM5 is used as an example)
SUN2000-(12KTL-25KTL)-M5 Series
User Manual 2 Overview
Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd. 7

Table 2-1 Model description
No. Meaning Value
1 Series name SUN2000: three-phase grid-tied PV string
inverter
2 Power level ● 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.
● 25K: The rated power is 25 kW.
3 Topology TL: transformerless
4 Sales region ZH: China
5 Product code M5: product series with an input voltage level
of 1100 V DC
Supported Power Grids
Power grid types supported by the SUN2000 include TN-S, TN-C, TN-C-S, TT, and
IT.
Figure 2-2 Supported power grids
SUN2000-(12KTL-25KTL)-M5 Series
User Manual 2 Overview
Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd. 8

NO TE
● 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.
Networking Application
The SUN2000 applies to residential rooftop grid-tied systems and small-sized
ground grid-tied PV plants. Typically, a grid-tied system consists of PV strings, grid-
tied inverters, AC switches, and power distribution units.
Figure 2-3 Networking application (single inverter)
(A) PV string (B) SUN2000 (C) AC power
distribution unit
(D) Load (E) Power meter (F) Power grid
(G) Smart Dongle (H) Optimizer
SUN2000-(12KTL-25KTL)-M5 Series
User Manual 2 Overview
Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd. 9

2.2 Appearance
Figure 2-4 Appearance
(1) LED indicators (2) Ground screws
(3) DC switch locking screw hole[1] (4) DC switch (DC SWITCH)
(5) Smart Dongle port (4G/WLAN-FE) (6) DC input terminals (PV1–PV4)
(7) Fan (8) Communication port (COM)
(9) AC output ports (AC)
Note [1]: For models used in Australia, the DC switch locking screw needs to be
installed according to the local standard to secure the DC switch (DC SWITCH)
and prevent incorrect startup. The DC switch locking screw is delivered with the
device.
Table 2-2 LED indicator description
Category Status Meaning
Running
indication
LED1 LED2 N/A
Steady green Steady green The SUN2000 is operating in grid-
tied mode.
SUN2000-(12KTL-25KTL)-M5 Series
User Manual 2 Overview
Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd. 10

Category Status Meaning
Blinking green
at long
intervals (on
for 1s and
then o for
1s)
O The DC is on and the AC is o.
Blinking green
at long
intervals (on
for 1s and
then o for
1s)
Blinking green at long
intervals (on for 1s and
then o for 1s)
The DC is on, the AC is on, and the
SUN2000 is not exporting power to
the power grid.
O Blinking green at long
intervals (on for 1s and
then o for 1s)
The DC is o and the AC is on.
O O Both the DC and AC are o.
Blinking red at
short intervals
(on for 0.2s
and then o
for 0.2s)
N/A There is a DC environmental alarm,
such as an alarm indicating that
High String Input Voltage, String
Reverse Connection, or Low
Insulation Resistance.
N/A Blinking red at short
intervals (on for 0.2s
and then o for 0.2s)
There is an AC environmental
alarm, such as an alarm indicating
Grid Undervoltage, Grid
Overvoltage, Grid Overfrequency, or
Grid Underfrequency.
Steady red Steady red Fault
Communicatio
n indication
LED3 N/A
Blinking green at short intervals (on for
0.2s and then o for 0.2s)
Communication is in progress.
(When a mobile phone is connected
to the SUN2000, the indicator rst
indicates that the phone is
connected to the SUN2000): blinks
green at long intervals.)
Blinking green at long intervals (on for 1s
and then o for 1s)
The mobile phone is connected to
the SUN2000.
O There is no communication.
Device
replacement
indication
LED1 LED2 LED3 N/A
Steady red Steady red Steady red The SUN2000 hardware is faulty.
The SUN2000 needs to be replaced.
SUN2000-(12KTL-25KTL)-M5 Series
User Manual 2 Overview
Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd. 11

2.3 Label Description
Symbol Name Meaning
Grounding label Indicates the position for
connecting the protective
earthing (PE) cable.
Inverter serial number (SN)
label
Indicates the product SN.
QR code label for inverter Wi-
Fi connection
Scan the QR code to connect
to the SUN2000 inverter Wi-Fi.
2.4 Working Principles
2.4.1 Working Modes
The SUN2000 can work in Standby, Operating, or Shutdown mode.
Figure 2-5 Working modes
SUN2000-(12KTL-25KTL)-M5 Series
User Manual 2 Overview
Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd. 12

Table 2-3 Working mode description
Working
Mode
Description
Standby The SUN2000 enters Standby mode when the external
environment does not meet the operating requirements. In
Standby mode:
● The SUN2000 continuously performs status check and enters
the Operating mode once the operating requirements are met.
● The SUN2000 enters Shutdown mode after detecting a
shutdown command or a fault after startup.
Operating In Operating mode:
● The SUN2000 converts DC power from PV strings into AC power
and feeds the power to the power grid.
● The SUN2000 tracks the maximum power point to maximize
the PV string output.
● If the SUN2000 detects a fault or a shutdown command, it
enters the Shutdown mode.
● The SUN2000 enters Standby mode after detecting that the PV
string output power is not suitable for connecting to the power
grid for generating power.
Shutdown ● In Standby or Operating mode, the SUN2000 enters Shutdown
mode after detecting a fault or shutdown command.
● In Shutdown mode, the SUN2000 enters Standby mode after
detecting a startup command or that the fault is rectied.
2.4.2 Circuit Diagram
The inverter connects to four PV strings and tracks the maximum power point of
the PV strings through two maximum power point tracking (MPPT) circuits. It also
converts DC power into three-phase AC power through an inverter circuit. Surge
protection is supported on both the DC and AC sides.
SUN2000-(12KTL-25KTL)-M5 Series
User Manual 2 Overview
Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd. 13

Figure 2-6 Conceptual diagram
SUN2000-(12KTL-25KTL)-M5 Series
User Manual 2 Overview
Issue 01 (2022-06-15) Copyright © Huawei Digital Power Technologies Co., Ltd. 14