Huawei SUN2000 Series User manual

SUN2000-(3.8KTL-11.4KTL)-USL0
User Manual
Issue
01
Date
2018-05-21
HUAWEI TECHNOLOGIES CO., LTD.

Issue 01 (2018-05-21)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
i
Copyright © Huawei Technologies Co., Ltd. 2018. All rights reserved.
No part of this document may be reproduced or transmitted in any form or by any means without prior
written consent of Huawei Technologies Co., Ltd.
Trademarks and Permissions
and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd.
All other trademarks and trade names mentioned in this document are the property of their respective
holders.
Notice
The purchased products, services and features are stipulated by the contract made between Huawei and
the customer. All or part of the products, services and features described in this document may not be
within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements,
information, and recommendations in this document are provided "AS IS" without warranties, guarantees or
representations of any kind, either express or implied.
The information in this document is subject to change without notice. Every effort has been made in the
preparation of this document to ensure accuracy of the contents, but all statements, information, and
recommendations in this document do not constitute a warranty of any kind, express or implied.
Huawei Technologies Co., Ltd.
Address:
Huawei Industrial Base
Bantian, Longgang
Shenzhen 518129
People's Republic of China
Website:
http://e.huawei.com

SUN2000-(3.8KTL-11.4KTL)-USL0
User Manual
About This Document
Issue 01 (2018-05-21)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
ii
About This Document
Purpose
This document describes the SUN2000-3.8KTL-USL0, SUN2000-5KTL-USL0,
SUN2000-7.6KTL-USL0, SUN2000-9KTL-USL0, SUN2000-10KTL-USL0, and
SUN2000-11.4KTL-USL0 (SUN2000 for short) in terms of installation, electrical connections,
commissioning, maintenance, and troubleshooting. Understand the safety information and get
familiar with the SUN2000 functions and features before installing and operating the
SUN2000.
Intended Audience
This document is intended for:
PV plant operation personnel and qualified electrical technicians responsible for
installing, wiring, commissioning, maintaining, and troubleshooting the SUN2000
Personnel using the app to view data and carry out operations
Symbol Conventions
The symbols that may be found in this document are defined as follows.
Symbol
Description
Indicates an imminently hazardous situation which, if not
avoided, will result in serious injury or death.
Indicates a potentially hazardous situation which, if not
avoided, could result in serious injury or death.
Indicates a potentially hazardous situation which, if not
avoided, may 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-(3.8KTL-11.4KTL)-USL0
User Manual
About This Document
Issue 01 (2018-05-21)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
iii
Symbol
Description
Calls attention to important information, best practices and
tips.
NOTE is used to address information not related to personal
injury, equipment damage, or environment deterioration.
Change History
Changes between document issues are cumulative. The latest document issue contains all
updates made in previous issues.
Issue 01 (2018-05-21)
This issue is used for first office application (FOA).

SUN2000-(3.8KTL-11.4KTL)-USL0
User Manual
Contents
Issue 01 (2018-05-21)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
iv
Contents
About This Document.................................................................................................................... ii
1 Safety Precautions.........................................................................................................................1
2 Product Overview .........................................................................................................................5
2.1 Product Introduction .....................................................................................................................................................5
2.2 Appearance ...................................................................................................................................................................8
2.3 Label Description........................................................................................................................................................12
2.4 Working Principles......................................................................................................................................................15
3 Storage...........................................................................................................................................18
4 System Installation .....................................................................................................................19
4.1 Checking Before Installation ......................................................................................................................................19
4.2 Tools and Instruments.................................................................................................................................................20
4.3 Determining the Installation Position .........................................................................................................................21
4.4 Installing the Mounting Bracket .................................................................................................................................25
4.4.1 Wall-Mounted Installation .......................................................................................................................................26
4.4.2 Support-Mounted Installation..................................................................................................................................27
4.5 Installing the SUN2000 ..............................................................................................................................................30
4.6 (Optional) Installing a SIM Card................................................................................................................................32
5 Electrical Connections................................................................................................................34
5.1 Preparing Cables.........................................................................................................................................................35
5.2 Installing the Pipe Fittings..........................................................................................................................................40
5.3 Electrical Connections................................................................................................................................................43
5.3.1 Connecting the AC Output Power Cable .................................................................................................................43
5.3.2 Connecting the PV Input Power Cable ....................................................................................................................48
5.3.3 Connecting the Battery Cable..................................................................................................................................51
5.3.4 Connecting the Signal Cables..................................................................................................................................54
5.3.5 (Optional) Installing an Antenna..............................................................................................................................57
6 System Commissioning .............................................................................................................59
6.1 Checking Before Power-On........................................................................................................................................59
6.2 Powering On the System.............................................................................................................................................60
6.3 Powering Off the System............................................................................................................................................62

SUN2000-(3.8KTL-11.4KTL)-USL0
User Manual
Contents
Issue 01 (2018-05-21)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
v
6.4 Grid-tied/Backup Mode Switching.............................................................................................................................63
7 Operations on the Local FusionHome App ...........................................................................66
7.1 App Overview.............................................................................................................................................................66
7.2 Downloading and Installing the App ..........................................................................................................................68
7.3 Connecting to a SUN2000 WiFi Network ..................................................................................................................69
7.4 App Operations by the Installer ..................................................................................................................................73
7.4.1 Logging In to the App..............................................................................................................................................73
7.4.2 Querying the Device Information............................................................................................................................77
7.4.3 Maintaining the Devices..........................................................................................................................................80
7.4.3.1 Adding/Deleting Devices......................................................................................................................................81
7.4.3.2 Upgrading Devices ...............................................................................................................................................84
7.4.3.3 Performance Data .................................................................................................................................................86
7.4.3.4 Energy Control......................................................................................................................................................87
7.4.3.4.1 Grid-tied Point Control......................................................................................................................................88
7.4.3.4.2 Energy Storage Control......................................................................................................................................89
7.4.3.5 Starting or Shutting Down the SUN2000..............................................................................................................92
7.4.3.6 Restoring Factory Defaults...................................................................................................................................93
7.4.3.7 Clearing Data........................................................................................................................................................94
7.4.3.8 Starting AFCI Check.............................................................................................................................................95
7.4.3.9 Adjusting Total Energy Yield................................................................................................................................95
7.4.3.10 Restarting the SUN2000.....................................................................................................................................96
7.4.4 Quick Setting ...........................................................................................................................................................97
7.4.5 Setting Grid-Connection Parameters .....................................................................................................................100
7.4.5.1 Setting Grid Parameters......................................................................................................................................101
7.4.5.2 Protection Parameters .........................................................................................................................................103
7.4.5.3 Feature Parameters..............................................................................................................................................105
7.4.5.4 Power Adjustment...............................................................................................................................................110
7.4.5.5 Time Setting........................................................................................................................................................ 112
7.4.6 Communication Configuration .............................................................................................................................. 114
7.4.7 Managing Logs......................................................................................................................................................122
7.4.8 Menu......................................................................................................................................................................123
7.4.8.1 Changing the Password.......................................................................................................................................123
7.4.8.2 About ..................................................................................................................................................................124
7.5 App Operations by the User......................................................................................................................................124
7.5.1 Logging In to the App............................................................................................................................................124
7.5.2 Querying the Device Status ...................................................................................................................................125
7.5.3 Alarm Management ...............................................................................................................................................126
7.5.4 Querying the Power Curve ....................................................................................................................................127
7.5.5 Querying Energy Yields.........................................................................................................................................128
7.5.6 Settings ..................................................................................................................................................................128
7.5.7 About .....................................................................................................................................................................131

SUN2000-(3.8KTL-11.4KTL)-USL0
User Manual
Contents
Issue 01 (2018-05-21)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
vi
7.6 App Troubleshooting ................................................................................................................................................132
8 System Maintenance.................................................................................................................134
8.1 Routine Maintenance................................................................................................................................................134
8.2 Parts Replacement ....................................................................................................................................................135
8.2.1 Replacing the Power Compartment .......................................................................................................................135
8.3 SUN2000 Troubleshooting .......................................................................................................................................142
9 Handling the SUN2000 ............................................................................................................152
9.1 Removing the SUN2000...........................................................................................................................................152
9.2 Packing the SUN2000...............................................................................................................................................152
9.3 Disposing of the SUN2000.......................................................................................................................................152
10 Technical Specifications ........................................................................................................153
A Grid Codes.................................................................................................................................160
B Acronyms and Abbreviations ................................................................................................162

SUN2000-(3.8KTL-11.4KTL)-USL0
User Manual
1 Safety Precautions
Issue 01 (2018-05-21)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
1
1 Safety Precautions
Safety
Before performing operations, read through this manual and follow all the precautions to
prevent accidents. The "DANGER", "WARNING", "CAUTION", and "NOTICE"
statements in this document do not represent all the safety instructions. They are only
supplements to the safety instructions.
Only certified electricians are allowed to install, connect cables for, commission, maintain,
and troubleshoot Huawei products, and they must understand basic safety precautions to
avoid hazards.
When operating Huawei equipment, in addition to following the general precautions in this
document, follow the specific safety instructions given by Huawei. Huawei will not be liable
for any consequence caused by the violation of the safety operation regulations and design,
production, and usage standards.
Disclaimer
Huawei shall not be liable for any consequence caused by any of the following events:
Damage during transportation
Storage conditions that do not meet the requirements specified in this document.
Incorrect storage, installation, or use
Installation or use by unqualified personnel
Failure to follow the operation instructions and safety precautions in this document
Operation in extreme environments which are not covered in this document
Operation beyond specified ranges.
Unauthorized modifications to the product or software code or removal of the product
Device damage due to force majeure (such as lightning, earthquake, fire, and storm)
Warranty expiration without extension of warranty service.
Installation or use in environments which are not specified in relevant international
standards

SUN2000-(3.8KTL-11.4KTL)-USL0
User Manual
1 Safety Precautions
Issue 01 (2018-05-21)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
2
Personnel Requirements
Only certified electricians are allowed to install, connect cables for, commission, maintain,
troubleshoot, and replace the SUN2000.
Operation personnel should receive professional training.
Operation personnel should read through this document and follow all the precautions.
Operation personnel should be familiar with the safety standards relevant to electrical
systems.
Operation personnel should understand the composition and working principles of the
grid-tied PV system and be aware of local regulations.
Operation personnel must wear proper personal protective equipment (PPE).
Protecting Labels
Do not scrawl or damage any labels on the SUN2000 enclosure. These labels contain
important information about safe operation.
Do not scrawl or damage the nameplate on the SUN2000 enclosure. This nameplate
contains important product information.
Installation
Never power on the SUN2000 during installation.
Ensure that the SUN2000 is not connected to a power supply or powered on before
finishing installation.
To allow proper heat dissipation and installation, maintain appropriate clearances
between the SUN2000 and other objects, as shown in Figure 1-1. If you have any
questions about the clearances, consult local technical support engineers.

SUN2000-(3.8KTL-11.4KTL)-USL0
User Manual
1 Safety Precautions
Issue 01 (2018-05-21)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
3
Figure 1-1 Installation clearance
Ensure that the SUN2000 is installed in a well-ventilated environment.
Ensure that the SUN2000 heat sinks are free from blockage.
Do not open the front panel of the SUN2000.
Do not remove the terminals and ports at the bottom of the SUN2000.
Electrical Connections
Before connecting cables, ensure that the SUN2000 is secured in position and not damaged in
any way. Otherwise, electric shock or fire may occur.
Ensure that all electrical connections comply with local electrical standards.
Obtain approval from the local utility company before using the SUN2000 to generate
electricity in grid-tied mode.
Ensure that the cables used in a grid-tied PV system are properly connected and insulated
and meet all specification requirements.
Operation

SUN2000-(3.8KTL-11.4KTL)-USL0
User Manual
1 Safety Precautions
Issue 01 (2018-05-21)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
4
High voltage may cause an electric shock, which results in serious property damage, serious
injury, or death from the SUN2000 in operation. Strictly comply with the safety precautions in
this document and associated documents when operating the SUN2000.
When the SUN2000 is powered on for the first time, only certified electricians are
allowed to perform quick setting. Incorrect settings may affect the normal SUN2000
operation and cause the SUN2000 to not comply with the country certification.
When the SUN2000 is operating, do not disconnect under load.
Do not touch an energized SUN2000 because the heat sink reaches a high temperature.
Follow local laws and regulations when operating the equipment.
Maintenance and Replacement
High voltage may cause an electric shock, which results in serious property damage, serious
injury, or death, or serious property damage from the SUN2000 in operation. Prior to
maintenance, power off the SUN2000 and strictly comply with the safety precautions in this
document and associated documents when operating the SUN2000.
Before performing maintenance on the SUN2000, ensure that you have sufficient
knowledge of this document, and proper tools, and testing equipment.
Before performing maintenance tasks, power off the SUN2000 and wait at least 5
minutes.
Temporary warning signs or fences must be placed to prevent unauthorized people from
entering the site.
If the SUN2000 is faulty, contact your supplier.
The SUN2000 can be powered on only after all faults are rectified. Failing to do so may
escalate faults or damage the device.
Observe ESD precautions and wear ESD gloves during maintenance.

SUN2000-(3.8KTL-11.4KTL)-USL0
User Manual
2 Product Overview
Issue 01 (2018-05-21)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
5
2 Product Overview
2.1 Product Introduction
Function
The SUN2000 is a single-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:
SUN2000-3.8KTL-USL0
SUN2000-5KTL-USL0
SUN2000-7.6KTL-USL0
SUN2000-9KTL-USL0
SUN2000-10KTL-USL0
SUN2000-11.4KTL-USL0
Each of the preceding product models has two editions: 4G and WLAN.
The products look alike. The SUN2000-3.8KTL-USL0 is used as an example.
Figure 2-1 Model number
Table 2-1 Model number explanation
No.
Meaning
Description
1
Product
SUN2000: grid-tied PV string inverter

SUN2000-(3.8KTL-11.4KTL)-USL0
User Manual
2 Product Overview
Issue 01 (2018-05-21)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
6
No.
Meaning
Description
2
Power
3.8K: The power level is 3.8 kW.
5K: The power level is 5 kW.
7.6K: The power level is 7.6 kW.
9K: The power level is 9 kW.
10K: The power level is 10 kW.
11.4K: The power level is 11.4 kW.
3
Topology
TL: transformerless
4
Region
US: the U.S.
5
Design code
L0: residential
Networking Application
The SUN2000 applies to a residential rooftop grid-tied system. Typically, a grid-tied system
consists of the PV string, grid-tied inverter, power distribution unit (PDU), and electricity
meter.
Figure 2-2 Networking application (dashed boxes indicate optional components)
indicates the power flow direction. indicates the signal cable. indicates the
signal flow.
SUN2000-3.8KTL-USL0/SUN2000-5KTL-USL0/SUN2000-7.6KTL-USL0 supports two PV string
inputs. SUN2000-9KTL-USL0/SUN2000-10KTL-USL0/SUN2000-11.4KTL-USL0 supports three
PV string inputs. Two PV string inputs are used as an example.
The autotransformer is used only when there is 120 V load and the power gird is 240/120 split phase
or 240 delta shown in Figure 2-3.

SUN2000-(3.8KTL-11.4KTL)-USL0
User Manual
2 Product Overview
Issue 01 (2018-05-21)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
7
Supported Power Grids
The SUN2000 supports low-voltage power grids.
The following power grids are in L1/L2/N mode. The output mode needs to be set to
L1/L2/N.
To set the output mode, choose Grid-connect config > Expert > Grid parameters on the Home screen
of the FusionHome app.
Figure 2-3 Power grid types (L1/L2/N)
The following power grids are in L1/L2 mode. The output mode needs to be set to
L1/L2.
To set the output mode, choose Grid-connect config > Expert > Grid parameters on the Home screen
of the FusionHome app.

SUN2000-(3.8KTL-11.4KTL)-USL0
User Manual
2 Product Overview
Issue 01 (2018-05-21)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
8
Figure 2-4 Power grid types (L1/L2)
2.2 Appearance
Enclosure Appearance
Figure 2-5 Front view
(1) Host panel
(2) LEDs
(3) Maintenance
compartment door
Table 2-2 describes the LED indicators.

SUN2000-(3.8KTL-11.4KTL)-USL0
User Manual
2 Product Overview
Issue 01 (2018-05-21)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
9
Table 2-2 LED description
Type
Status
Meaning
Running
indication
LED1
LED2
N/A
Steady green
Steady green
The SUN2000 is exporting
power to the power grid.
Blinking green
at long intervals
(on for 1s and
then off for 1s)
Off
The DC is on and the AC is
off.
Off
Blinking green at
long intervals (on
for 1s and then
off for 1s)
The DC is off and the AC is
on.
Blinking green
at long intervals
(on for 1s and
then off for 1s)
Blinking green at
long intervals (on
for 1s and then
off for 1s)
The DC is on, the AC is on,
and the SUN2000 is not
exporting power to the power
grid.
Steady orange
Steady orange
The SUN2000 is running in
backup state.
Blinking orange
at long intervals
Off
The DC is on and the
SUN2000 has no output in
backup state.
Off
Off
Both the DC and AC are off,
or the SUN2000 is in Low
Power Consumption mode.
Low Power Consumption
mode means that the
monitoring system of the
SUN2000 is hibernating.
Steady red
Steady red
The SUN2000 is faulty.
Blinking red
slowly (on for
1s and then off
for 1s)
Steady green
Exporting power to the power
grid, optimizer fault.
Blinking red
slowly (on for
1s and then off
for 1s)
Steady Orange
Backup mode, optimizer
fault.
Communication
indication
LED3
N/A

SUN2000-(3.8KTL-11.4KTL)-USL0
User Manual
2 Product Overview
Issue 01 (2018-05-21)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
10
Type
Status
Meaning
Blinking green at short intervals (on
for 0.2s and then off for 0.2s)
Communicating
(Communicating means that
communication with the
management system is in
progress. However, if a
mobile phone accesses the
SUN2000, the LED indicates
the "mobile phone access
status: blinking green at long
intervals" first.)
Blinking green at long intervals (on
for 1s and then off for 1s)
A mobile phone is connected
to the SUN2000.
Off
No communication.
Port Description
Figure 2-6 Bottom of the SUN2000-3.8KTL-USL0
No.
Component
No.
Component
1
DC switch
2
Antenna port
3
Battery cable hole
4
Ventilation valve
5
Backup enable button
6
Signal cable hole
7
DC input power cable hole
8
AC output cable hole (critical
load)
9
AC output cable hole (home load)
N/A
N/A

SUN2000-(3.8KTL-11.4KTL)-USL0
User Manual
2 Product Overview
Issue 01 (2018-05-21)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
11
Enclosure Dimensions
Figure 2-7 shows the SUN2000 enclosure dimensions.
Figure 2-7 Enclosure dimensions (SUN2000-3.8KTL/5KTL/7.6KTL-USL0)
Figure 2-8 Enclosure dimensions (SUN2000-9KTL/10KTL/11.4KTL-USL0)

SUN2000-(3.8KTL-11.4KTL)-USL0
User Manual
2 Product Overview
Issue 01 (2018-05-21)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
12
2.3 Label Description
Enclosure Labels
Table 2-3 describes the labels on the SUN2000 enclosure and their meanings.
Table 2-3 Label description
Label
Name
Meaning
Electric shock
warning
The SUN2000 has a voltage of 500
V. Electric shock could be fatal.
Keep a safe distance.
All components inside the
SUN2000 can be maintained only
by trained service personnel.
The DC input terminals and AC
output terminals have high
voltages. Disconnect the DC input
and AC output from the SUN2000
before maintenance.
When a PV module is exposed to
sunlight, it supplies DC power to
the SUN2000.
The DC conductors of the PV
system are not grounded and may
be energized.
The DC conductors of the PV
system are not grounded under
normal conditions. However, the
DC conductors may be
intermittently grounded
unexpectedly when the SUN2000 is
measuring the insulation resistance
at the PV side.
Burn warning
Do not touch a running SUN2000
because the shell is hot when the
SUN2000 is running.
Delayed
discharge
High voltage exists after the
SUN2000 is powered on. Only
qualified and trained electrical
technicians are allowed to perform
operations on the SUN2000.
Residual voltage exists after the
SUN2000 is powered off. It takes 5
minutes for the SUN2000 to
discharge to a safe voltage.
Transformerle
ss inverter
The SUN2000 output does not pass
through an isolation transformer.

SUN2000-(3.8KTL-11.4KTL)-USL0
User Manual
2 Product Overview
Issue 01 (2018-05-21)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
13
Label
Name
Meaning
Grounding
Indicates the position for connecting
the protective earthing (PE) cable.
Operation
warning
High touch current, earth connection
essential before connecting supply.
Operation
warning
Incorrect connection of the DC and AC
cables will result in serious damage to
the inverter.
Indicator
status
description
label
Describes the indicator status.
SUN2000
serial number
(SN) label
Indicates the SUN2000 SN.
SUN2000
MAC address
label
Indicates the MAC address.
QR code for
SUN2000
WiFi
connection
Scan the QR code to connect to
Huawei SUN2000 WiFi network
(Android) or obtain the WiFi password
(iOS).