Huawei SUN2000L-2KTL User manual

SUN2000L-(2KTL-5KTL)
User Manual
Issue
05
Date
2019-06-06
HUAWEI TECHNOLOGIES CO., LTD.

Issue 05 (2019-06-06)
Copyright © Huawei Technologies Co., Ltd.
i
Copyright © Huawei Technologies Co., Ltd. 2019. 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

SUN2000L-(2KTL-5KTL)
User Manual
About This Document
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About This Document
Purpose
This document describes the SUN2000L-(2KTL-5KTL) in terms of its installation, electrical
connections, commissioning, maintenance, and troubleshooting. SUN2000L-(2KTL-5KTL) is
abbreviated as SUN2000L. Before installing and operating the SUN2000L, ensure that you
are familiar with the features, functions, and safety precautions 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 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.

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User Manual
About This Document
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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 05 (2019-06-06)
Delete the CHINT-DDSU666 Smart Power Sensor in 5.1 Preparing Cables.
The FusionHome app is updated to the FusionSolar app.
Updated the Nameplate.
Issue 04 (2018-12-26)
Added the following description in 5.1 Preparing Cables: the CHINT-DDSU666 Smart Power
Sensor supports two communication protocols: Modbus and DLT645. Purchase a
CHINT-DDSU666 Smart Power Sensor using the Modbus protocol. The CHINT-DDSU666
Smart Power Sensor that uses the DLT645 communication protocol is unavailable.
Issue 03 (2018-03-28)
Upgraded the FusionHome app to 2.1.11.217.
Issue 02 (2017-12-12)
Upgraded the FusionHome app to 2.1.11.201.
Issue 01 (2017-09-27)
This issue is used for first office application (FOA).

SUN2000L-(2KTL-5KTL)
User Manual
Contents
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Contents
About This Document.................................................................................................................... ii
1 Safety Precautions.........................................................................................................................1
2 Product Overview .........................................................................................................................5
2.1 Product Introduction.....................................................................................................................................................5
2.2 Appearance ...................................................................................................................................................................7
2.3 Label Descriptions...................................................................................................................................................... 11
2.4 Working Principles .....................................................................................................................................................14
3 Storage...........................................................................................................................................17
4 System Installation .....................................................................................................................18
4.1 Checking Before Installation......................................................................................................................................18
4.2 Tools and Instruments.................................................................................................................................................19
4.3 Determining the Installation Position .........................................................................................................................20
4.4 Installing the Mounting Bracket.................................................................................................................................24
4.4.1 Wall-Mounted Installation .......................................................................................................................................25
4.4.2 Support-mounted Installation ..................................................................................................................................27
4.5 Installing the SUN2000L............................................................................................................................................29
4.6 Installing the WiFi Antenna........................................................................................................................................33
5 Electrical Connections................................................................................................................34
5.1 Preparing Cables.........................................................................................................................................................35
5.2 Installing the PE Cable ...............................................................................................................................................38
5.3 Installing the AC Output Power Cable........................................................................................................................40
5.4 Installing the DC Input Power Cable..........................................................................................................................44
5.5 Installing Battery Cables.............................................................................................................................................50
5.6 Installing the Signal Cable..........................................................................................................................................52
6 System Commissioning .............................................................................................................58
6.1 Checking Before Power-On........................................................................................................................................58
6.2 Powering On the System.............................................................................................................................................59
6.3 Commissioning...........................................................................................................................................................61
6.3.1 Scenario 1: Commissioning Through Setup Wizard................................................................................................61
6.3.2 Scenario 2: Device Commissioning.........................................................................................................................63

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6.4 Energy Control............................................................................................................................................................66
6.4.1 Grid-tied Point Control............................................................................................................................................66
6.4.2 Energy Storage Control............................................................................................................................................67
6.5 IPS Test (for Italy CEI0-21 Grid Code only)..............................................................................................................70
6.6 Powering Off the System............................................................................................................................................72
7 System Maintenance ..................................................................................................................74
7.1 Routine Maintenance..................................................................................................................................................74
7.2 Troubleshooting..........................................................................................................................................................75
8 Handling the SUN2000L............................................................................................................82
8.1 Removing the SUN2000L ..........................................................................................................................................82
8.2 Packing the SUN2000L..............................................................................................................................................82
8.3 Disposing of the SUN2000L.......................................................................................................................................82
9 Technical Specifications ............................................................................................................83
A Grid Codes...................................................................................................................................87
B Acronyms and Abbreviations ..................................................................................................92

SUN2000L-(2KTL-5KTL)
User Manual
1 Safety Precautions
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1 Safety Precautions
General 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 caused by 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 comply with 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, earthquakes, fire, and storms)
Warranty expiration without extension of the warranty service
Installation or use in environments which are not specified in related international
standards

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Personnel Requirements
Only certified electricians are allowed to install, connect cables for, commission, maintain,
troubleshoot, and replace the SUN2000L. They should:
Receive professional training.
Read through this document and follow all the precautions.
Be familiar with the safety specifications about the electrical system.
Understand the composition and working principles of the grid-tied PV system and local
regulations.
Wear proper personal protective equipment (PPE).
Protecting Labels
Do not scrawl or damage any labels on the SUN2000L enclosure because these labels
contain important information about safe operation.
Do not scrawl or damage the nameplate on the SUN2000L enclosure. This nameplate
contains important product information.
Installation
Never power on the SUN2000L during installation.
Ensure that the SUN2000L is not connected to a power supply or powered on before
installation is complete.
To allow proper heat dissipation and installation, maintain appropriate clearances
between the SUN2000L and other objects, as shown in Figure 1-1. If you have any
questions about the clearances, consult technical support engineers.

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Figure 1-1 Installation clearances
Ensure that the SUN2000L is installed in a well-ventilated environment.
Ensure that the SUN2000L heat sinks are free from blockage.
Do not open the front panel of the SUN2000L.
Do not remove the terminals and ports at the bottom of the SUN2000L.
Electrical Connections
Before connecting cables, ensure that the SUN2000L is secured in position and not damaged
in any way. Otherwise, electric shocks or fire may occur.
Ensure that all electrical connections comply with the local electrical standards.
Obtain approval from the local utility company before using the SUN2000L 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
The high voltage generated by the SUN2000L during operation may cause an electric shock,
which can result in serious property damage, serious injury, or death. Strictly comply with the
safety precautions in this document and associated documents when operating the
SUN2000L.

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When the SUN2000L is powered on for the first time, only certified electricians are
allowed to perform quick setting. Incorrect settings may affect the normal SUN2000L
operation and cause the SUN2000L to not comply with the country certification.
When the SUN2000L is operating, do not disconnect under load.
Do not touch an energized SUN2000L because the heat sink reaches a high temperature.
Follow local laws and regulations when operating the equipment.
Maintenance and Replacement
The high voltage generated by the SUN2000L during operation may cause an electric shock,
which can result in serious property damage, serious injury, or death. Prior to maintenance,
power off the SUN2000L and strictly comply with the safety precautions in this document and
associated documents to operate the SUN2000L.
Before performing maintenance on the SUN2000L, ensure that you have sufficient
knowledge of this document, and proper tools and testing equipment.
Before performing maintenance tasks, power off the SUN2000L and wait at least 5
minutes.
Temporary warning signs or fences must be placed to prevent unauthorized people from
entering the site.
If the SUN2000L is faulty, contact your supplier.
The SUN2000L 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.

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2 Product Overview
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2 Product Overview
2.1 Product Introduction
Function
The SUN2000L is a single-phase grid-tied PV string inverter that converts the DC power
generated by PV strings intoAC power and feeds the electricity into the power grid.
Models
This document involves the following product models:
SUN2000L-2KTL
SUN2000L-3KTL
SUN2000L-3.68KTL
SUN2000L-4KTL
SUN2000L-4.6KTL
SUN2000L-5KTL
Figure 2-1 Designation explanation of the SUN2000L-5KTL
Table 2-1 Designation explanation of the SUN2000L-5KTL
No.
Meaning
Description
1
Series name
SUN2000L: single-phase grid-tied PV string
inverter

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No.
Meaning
Description
2
Power level
2K: The power level is 2K.
3K: The power level is 3K.
3.68K: The power level is 3.68K.
4K: The power level is 4K.
4.6K: The power level is 4.6K.
5K: The power level is 5K.
3
Topology
TL: transformerless
Networking Application
The SUN2000L applies to a residential rooftop grid-tied system. Typically, a grid-tied system
consists of the PV string, grid-tied inverter, AC switch, and power distribution unit.
Figure 2-2 Network diagram (dashed boxes indicate optional components)
indicates a power cable, indicates the power flow direction, and indicates a signal
cable.
(A) PV string
(B) DC switch
(C) SUN2000L
(D) AC switch
(E) Power distribution unit
(F) Smart Power Sensor
(G) Power meter
(H) Power grid
(I) Battery
(J) Battery switch
(K) Alarm beacon
(L) Residential load
Supported Power Grid
The power grids supported by the SUN2000L include TN-S, TN-C, TN-C-S, and TT. In a TT
power grid, the N-PE voltage should be lower than 30 V.

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Figure 2-3 Power grid types
2.2 Appearance
Front View
Figure 2-4 Front view
(1) LED 1
(2) LED 2
(3) LED 3
(4) Front panel

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Table 2-2 LED description
Type
Status
Meaning
Running
indication
LED 1
LED 2
N/A
Steady green
Steady green
The SUN2000L 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 SUN2000L is not
exporting power to the power
grid.
Off
Off
Both the DC and AC are off,
or the SUN2000L is in Low
Power Consumption mode.
Low Power Consumption
mode means that the
monitoring system of the
SUN2000L is hibernating.
Steady red
Steady red
The SUN2000L is faulty.
Communication
indication
LED 3
N/A
Blinking green at short intervals (on
for 0.2s and then off for 0.2s)
Communicating
(Communicating means that
the communication with the
upper-level management unit
is in progress. However, if a
mobile phone accesses the
SUN2000L, 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)
The mobile phone is
connected to the SUN2000L.
Off
No communication

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Rear View
Figure 2-5 Rear view
(1) Mounting plate
(2) Mounting bracket
(3) Heat sink
Bottom View
Figure 2-6 Bottom view
No.
Component
Silk Screen
1
DC switch
DC SWITCH
2
DC input terminal
PV+/PV–
3
Battery terminal
BAT+/BAT–

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No.
Component
Silk Screen
4
COM port
COM
5
AC output port
AC
6
Ventilation valve
N/A
7
Antenna port
ANT
8
Alarm port
ALARM
9
Ground point
N/A
Dimensions
Figure 2-7 Enclosure dimensions

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Figure 2-8 Mounting bracket dimensions
2.3 Label Descriptions
Labels
Table 2-3 Label description
Symbol
Name
Meaning
Burn warning
Do not touch a running
SUN2000L because the
shell is hot when the
SUN2000L is running.
Delay discharge
High voltage exists
after the SUN2000L is
powered on. Only
qualified and trained
electrical technicians
are allowed to perform
operations on the
SUN2000L.
Residual voltage exists
after the SUN2000L is
powered off. It takes 5
minutes for the
SUN2000L to
discharge to the safe
voltage.

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Symbol
Name
Meaning
Refer to documentation
Reminds operators to
refer to the documents
supplied with the
SUN2000L.
Grounding
Indicates the position for
connecting the protective
earthing (PE) cable.
Operation warning
Do not remove the
connector or antenna
when the SUN2000L is
running.
Indicator status
description label
Describes the indicator
status.
SUN2000L serial number
(SN) label
Indicates the SUN2000L
SN.
SUN2000L MAC address
label
Indicates the MAC
address.
QR code for SUN2000L
WiFi connection
Scan the QR code to
connect to Huawei
SUN2000L WiFi network
(Android) or obtain the
WiFi password (iOS).
The labels are for reference only.

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Nameplate
Figure 2-9 Nameplate
(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.
Table 2-4 Compliance symbols
Symbol
Name
Meaning
RCM certification mark
The SUN2000L complies
with RCM certification
standards.
CE certification mark
The SUN2000L complies
with Conformité
Européenne (CE)
certification standards.
TÜVRheinland
certification mark
The SUN2000L complies
with TÜVRheinland
certification standards.
Environment friendly use
period (EFUP) mark
The product does not
pollute the environment
during the specified
period.

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Symbol
Name
Meaning
EU waste electrical and
electronic equipment
(WEEE) mark
Do not dispose of the
product as household
garbage.
2.4 Working Principles
Conceptual Diagram
The SUN2000L receives two in puts from the two PV strings. Two MPPT circuits are
configured inside the SUN2000L. Each circuit tracks the maximum power point of one PV
string respectively. The DC power is then converted into single-phase AC power through an
inverter circuit. Surge protection is supported on both the DC and AC sides.
The SUN2000L has a reserved battery port to connect to batteries, which are used to store the
surplus power produced by PV strings and not required by residential loads. The power stored
in batteries can be exported to the power grid based on the load condition to meet peak and
valley power consumption requirements and maximize the benefits.
Figure 2-10 Conceptual diagram