Huawei SUN2000-2KTL-L0 User manual

SUN2000-(2KTL-5KTL)-L0
User Manual
Issue
02
Date
2019-07-04
HUAWEI TECHNOLOGIES CO., LTD.

Issue 02 (2019-07-04)
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

SUN2000-(2KTL-5KTL)-L0
User Manual
About This Document
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About This Document
Purpose
This document describes the SUN2000-(2KTL-5KTL) -L0 in terms of its installation,
electrical connections, commissioning, maintenance, and troubleshooting.
SUN2000-(2KTL-5KTL)-L0 is abbreviated as SUN2000. Before installing and operating the
SUN2000, ensure that you are familiar with the features, functions, and safety precautions
provided in this document.
Intended Audience
This document is intended for upgrade personnel. Upgrade personnel must:
Be familiar with the product networking and related NEs' versions.
Have device maintenance experience and be familiar with device operation and
maintenance.
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 death or serious injury.
Indicates a potentially hazardous situation which, if not
avoided, could result in death or serious injury.
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-(2KTL-5KTL)-L0
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, and environment
deterioration.
Change History
Changes between document issues are cumulative. The latest document issue contains all
updates made in previous issues.
Issue 02 (2019-07-04)
Delete the CHINT-DDSU666 Smart Power Sensor in 5.1 Preparing Cables.
Added 6.3 Commissioning
Added 6.4 Grid-tied Point Control
Updated 9 Technical Specifications.
Issue 01 (2018-08-30)
This issue is used for first office application (FOA).

SUN2000-(2KTL-5KTL)-L0
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......................................................................................................................................................12
2.4 Working Principles......................................................................................................................................................15
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 SUN2000 ..............................................................................................................................................29
4.6 (Optional) Installing the WiFi Antenna.......................................................................................................................33
4.7 (Optional) Installing the 4G Smart Dongle.................................................................................................................34
5 Electrical Connections................................................................................................................36
5.1 Preparing Cables.........................................................................................................................................................37
5.2 Installing the PE Cable ...............................................................................................................................................40
5.3 Installing the AC Output Power Cable........................................................................................................................42
5.4 Installing the DC Input Power Cable..........................................................................................................................46
5.5 Installing the Signal Cable..........................................................................................................................................52
6 System Commissioning .............................................................................................................56
6.1 Checking Before Power-On........................................................................................................................................56
6.2 Powering On the System.............................................................................................................................................57
6.3 Commissioning...........................................................................................................................................................58
6.3.1 Scenario 1: Commissioning Through Setup Wizard................................................................................................58
6.3.2 Scenario 2: Device Commissioning.........................................................................................................................61

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6.4 Grid-tied Point Control...............................................................................................................................................64
6.5 Powering Off the System............................................................................................................................................65
7 System Maintenance...................................................................................................................66
7.1 Routine Maintenance..................................................................................................................................................66
7.2 Troubleshooting..........................................................................................................................................................67
8 Handling the SUN2000 ..............................................................................................................73
8.1 Removing the SUN2000.............................................................................................................................................73
8.2 Packing the SUN2000.................................................................................................................................................73
8.3 Disposing of the SUN2000.........................................................................................................................................73
9 Technical Specifications ............................................................................................................74
A Grid Codes...................................................................................................................................78
B Acronyms and Abbreviations ..................................................................................................79

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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 during the transportation by the customer
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 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 SUN2000. 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 SUN2000 enclosure because 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
installation is complete.
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 technical support engineers.

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Figure 1-1 Installation clearances
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 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 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
The high voltage generated by the SUN2000 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 SUN2000.

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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
The high voltage generated by the SUN2000 during operation may cause an electric shock,
which can result in serious property damage, serious injury, or death. Prior to maintenance,
power off the SUN2000 and strictly comply with the safety precautions in this document and
associated documents to operate 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.

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2 Product Overview
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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 electricity into the power grid.
Models
This document involves the following product models:
SUN2000-2KTL-L0
SUN2000-3KTL-L0
SUN2000-4KTL-L0
SUN2000-5KTL-L0
Figure 2-1 Designation explanation of the SUN2000-5KTL-L0
Table 2-1 Designation explanation
No.
Meaning
Description
1
Series name
SUN2000: single-phase grid-tied PV string inverter
2
Power level
2K: The power level is 2K.
3K: The power level is 3K.
4K: The power level is 4K.
5K: The power level is 5K.

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No.
Meaning
Description
3
Topology
TL: transformerless
4
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, 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, indicates a
signal cable.
(A) PV string
(B) Smart PV Optimizer
(C) DC switch
(D) Smart PV Safety Box
(E) SUN2000
(F) AC switch
(G) Power distribution unit
(H) Smart Power Sensor
(I) Power meter
(J) Power grid
(K) Home load
Supported Power Grid
The power grids supported by the SUN2000 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 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)
Both the DC and AC are on,
and the SUN2000 is not
exporting power to the
power grid.
Off
Off
Both the DC and AC are off,
or the SUN2000 is in low
power consumption mode
which means that the
monitoring system of the
SUN2000 hibernates.
Steady red
Steady red
The SUN2000 is faulty
Communicati
on indication
LED 3
N/A
Blinking green at short intervals (on for
0.2s and then off for 0.2s)
Communicating
(Communicating refers to
that the communication with
the upper-level management
unit 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)
The mobile phone has
connected to the SUN2000.
Off
No communication

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Rear view
Figure 2-5 Rear view
(1) Mounting plate
(2) Mounting bracket
(3) Heat sink
(4) WiFi antenna (optional)
(5) 4G Smart Dongle (optional)
The Smart Dongle and WiFi antenna cannot be used at the same time.

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Bottom View
Figure 2-6 Bottom view
No.
Component
Silk Screen
1
DC switch
DC SWITCH
2
DC input terminals
PV+/PV–
3
COM port
COM
4
USB-4G port
USB-4G
5
AC output port
AC
6
Ventilation valve
N/A
7
Antenna port
ANT
8
Ground point
N/A

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Dimensions
Figure 2-7 SUN2000 dimensions
Figure 2-8 Mounting bracket dimensions

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2.3 Label Descriptions
Labels
Table 2-3 Label description
Symbol
Name
Meaning
Burn warning
Do not touch a running
SUN2000 because the
shell is hot when the
SUN2000 is running.
Delay 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 the safe
voltage.
Refer to documentation
Reminds operators to
refer to the documents
supplied with the
SUN2000.
Grounding
Indicates the position for
connecting the protective
earthing (PE) cable.
Operation warning
Do not remove the
connector or antenna
when the SUN2000 is
running.

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Symbol
Name
Meaning
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 .
The labels are for reference only.

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Nameplate
Figure 2-9 Nameplate of the SUN2000-5KTL-L0
(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 SUN2000 complies
with RCM certification
standards.
CE certification mark
The SUN2000 complies
with Conformité
Européenne (CE)
certification standards.
TÜVRheinland
certification mark
The SUN2000 complies
with TÜVRheinland
certification standards.
Environment friendly use
period (EFUP) mark
The product does not
pollute the environment
during the specified
period.
EU waste electrical and
electronic equipment
(WEEE) mark
Do not dispose of the
product as household
garbage.