Huawei SUN2000L Series User manual

SUN2000L-(2KTL-5KTL)
User Manual
Issue
06
Date
2020-03-19
HUAWEI TECHNOLOGIES CO., LTD.

Issue 06 (2020-03-19)
Copyright © Huawei Technologies Co., Ltd.
i
Copyright © Huawei Technologies Co., Ltd. 2020. 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:
https://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 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.
Supplements the important information in the main text.
NOTE is used to address information not related to
personal injury, equipment damage, and environment
deterioration.

SUN2000L-(2KTL-5KTL)
User Manual
About This Document
Issue 06 (2020-03-19)
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iii
Change History
Changes between document issues are cumulative. The latest document issue contains all
updates made in previous issues.
Issue 06 (2020-03-19)
Updated 6.3 Commissioning.
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.
The 2067 alarm possible cause is updated.
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 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.............................................................................................................................................................5
1.7 Maintenance and Replacement.....................................................................................................................................6
2 Product Overview .........................................................................................................................7
2.1 Product Introduction .....................................................................................................................................................7
2.2 Appearance ...................................................................................................................................................................9
2.3 Label Descriptions......................................................................................................................................................14
2.4 Working Principles......................................................................................................................................................16
3 Storage...........................................................................................................................................19
4 System Installation .....................................................................................................................20
4.1 Checking Before Installation ......................................................................................................................................20
4.2 Tools and Instruments.................................................................................................................................................21
4.3 Determining the Installation Position .........................................................................................................................22
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 WLAN Antenna ....................................................................................................................................33
5 Electrical Connections................................................................................................................34
5.1 Preparing Cables.........................................................................................................................................................34
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

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6 System Commissioning .............................................................................................................58
6.1 Checking Before Power-On........................................................................................................................................58
6.2 Powering On the System.............................................................................................................................................59
6.3 Commissioning...........................................................................................................................................................60
6.4 Powering Off the System............................................................................................................................................61
7 System Maintenance...................................................................................................................62
7.1 Routine Maintenance..................................................................................................................................................62
7.2 Troubleshooting..........................................................................................................................................................63
8 Handling the SUN2000L............................................................................................................70
8.1 Removing the SUN2000L ..........................................................................................................................................70
8.2 Packing the SUN2000L..............................................................................................................................................70
8.3 Disposing of the SUN2000L.......................................................................................................................................70
9 Technical Specifications ............................................................................................................71
A Grid Codes...................................................................................................................................76
B Acronyms and Abbreviations ..................................................................................................82

SUN2000L-(2KTL-5KTL)
User Manual
1 Safety Information
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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 specifications.
Otherwise, the equipment may become faulty, and the resulting equipment malfunction,
component damage, personal injuries, or property damage are not covered under the warranty.
Follow local laws and regulations when installing, operating, or maintaining the equipment.
The safety instructions in this document are only supplements to local laws and regulations.
Huawei will not be liable for any consequences of the following circumstances:
Operation beyond the conditions specified in this document
Installation or use in environments which are not specified in relevant international or
national standards
Unauthorized modifications to the product or software code or removal of the product
Failure to follow the operation instructions and safety precautions on the product and in
this document
Equipment damage due to force majeure, such as earthquakes, fire, and storms
Damage caused during transportation by the customer
Storage conditions that do not meet the requirements specified in this document
General Requirements

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Do not work with power on during installation.
Do not install, use, or operate outdoor equipment and cables (including but not limited to
moving equipment, operating equipment and cables, inserting connectors to or removing
connectors from signal ports connected to outdoor facilities, working at heights, and
performing outdoor installation) in harsh weather conditions such as lightning, rain,
snow, and level 6 or stronger wind.
After installing the equipment, remove idle packing materials such as cartons, foam,
plastics, and cable ties from the equipment area.
In the case of a fire, immediately leave the building or the equipment area, and turn on
the fire alarm bell or make an emergency call. Do not enter the building on fire in any
case.
Do not scrawl, damage, or block any warning label on the equipment.
Tighten the screws using tools when installing the equipment.
Understand the components and functioning of a grid-tied PV power system and relevant
local standards.
Repaint any paint scratches caused during equipment transportation or installation in a
timely manner. Equipment with scratches cannot be exposed to an outdoor environment
for a long period of time.
Do not open the host panel of the equipment.
Personal Safety
If there is a probability of personal injury or equipment damage during operations on the
equipment, immediately stop the operations, report the case to the supervisor, and take
feasible protective measures.
Use tools correctly to avoid hurting people or damaging the equipment.
Do not touch the energized equipment, as the enclosure is hot.
1.2 Personnel Requirements
Personnel who plan to install or maintain Huawei equipment must receive thorough
training, understand all necessary safety precautions, and be able to correctly perform all
operations.
Only qualified professionals or trained personnel are allowed to install, operate, and
maintain the equipment.
Only qualified professionals are allowed to remove safety facilities and inspect the
equipment.
Personnel who will operate the equipment, including operators, trained personnel, and
professionals, should possess the local national required qualifications in special
operations such as high-voltage operations, working at heights, and operations of special
equipment.
Only professionals or authorized personnel are allowed to replace the equipment or
components (including software).

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Professionals: personnel who are trained or experienced in equipment operations and are clear of the
sources and degree of various potential hazards in equipment installation, operation, and
maintenance
Trained personnel: personnel who are technically trained, have required experience, are aware of
possible hazards on themselves in certain operations, and are able to take protective measures to
minimize the hazards on themselves and other people
Operators: operation personnel who may come in contact with the equipment, except trained
personnel and professionals
1.3 Electrical Safety
Grounding
For the equipment that needs to be grounded, install the ground cable first when
installing the equipment and remove the ground cable last when removing the
equipment.
Do not damage the ground conductor.
Do not operate the equipment in the absence of a properly installed ground conductor.
Ensure that the equipment is connected permanently to the protective ground. Before
operating the equipment, check its electrical connection to ensure that it is securely
grounded.
General Requirements
Before connecting cables, ensure that the equipment is intact. Otherwise, electric shocks or
fire may occur.
Ensure that all electrical connections comply with local electrical standards.
Obtain approval from the local electric utility company before using the equipment in
grid-tied mode.
Ensure that the cables you prepared meet local regulations.
Use dedicated insulated tools when performing high-voltage operations.
AC and DC Power
Do not connect or disconnect power cables with power on. Transient contact between the core
of the power cable and the conductor will generate electric arcs or sparks, which may cause
fire or personal injury.
Before making electrical connections, switch off the disconnector on the upstream device
to cut off the power supply if people may contact energized components.

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Before connecting a power cable, check that the label on the power cable is correct.
If the equipment has multiple inputs, disconnect all the inputs before operating the
equipment.
Cabling
When routing cables, ensure that a distance of at least 30 mm exists between the cables
and heat-generating components or areas. This prevents damage to the insulation layer of
the cables.
Bind cables of the same type together. When routing cables of different types, ensure that
they are at least 30 mm away from each other.
Ensure that the cables used in a grid-tied PV power system are properly connected and
insulated and meet specifications.
1.4 Installation Environment Requirements
Ensure that the equipment is installed in a well ventilated environment.
To prevent fire due to high temperature, ensure that the ventilation vents or heat
dissipation system are not blocked when the equipment is running.
Do not expose the equipment to flammable or explosive gas or smoke. Do not perform
any operation on the equipment in such environments.
1.5 Mechanical Safety
Using Ladders
Use wooden or fiberglass ladders when you need to perform live working at heights.
When a step ladder is used, ensure that the pull ropes are secured and the ladder is held
firm.
Before using a ladder, check that it is intact and confirm its load bearing capacity. Do not
overload it.
Ensure that the wider end of the ladder is at the bottom, or protective measures have
been taken at the bottom to prevent the ladder from sliding.
Ensure that the ladder is securely positioned. The recommended angle for a ladder
against the floor is 75 degrees, as shown in the following figure. An angle rule can be
used to measure the angle.

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When climbing a ladder, take the following precautions to reduce risks and ensure
safety:
−Keep your body steady.
−Do not climb higher than the fourth rung of the ladder from the top.
−Ensure that your body's center of gravity does not shift outside the legs of the
ladder.
Drilling Holes
When drilling holes into a wall or floor, observe the following safety precautions:
Wear goggles and protective gloves when drilling holes.
When drilling holes, protect the equipment from shavings. After drilling, clean up any
shavings that have accumulated inside or outside the equipment.
Moving Heavy Objects
Be cautious to avoid injury when moving heavy objects.
When moving the equipment by hand, wear protective gloves to prevent injuries.
1.6 Commissioning
When the equipment is powered on for the first time, ensure that professional personnel set
parameters correctly. Incorrect settings may result in inconsistency with local certification and
affect the normal operation of the equipment.

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1.7 Maintenance and Replacement
High voltage generated by the equipment during operation may cause an electric shock, which
could result in death, serious injury, or serious property damage. Prior to maintenance, power
off the equipment and strictly comply with the safety precautions in this document and
relevant documents.
Maintain the equipment with sufficient knowledge of this document and using proper
tools and testing equipment.
Before maintaining the equipment, power it off and follow the instructions on the
delayed discharge label to ensure that the equipment is powered off.
Place temporary warning signs or erect fences to prevent unauthorized access to the
maintenance site.
If the equipment is faulty, contact your dealer.
The equipment can be powered on only after all faults are rectified. Failing to do so may
escalate faults or damage the equipment.

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2 Product Overview
2.1 Product Introduction
Function
The SUN2000Lis 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 SUN2000Lapplies 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

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(1) LED 1
(2) LED 2
(3) LED 3
(4) Front panel
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.
Communicat
LED 3
N/A

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Type
Status
Meaning
ion
indication
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
Rear View
Figure 2-5 Rear view
(1) Mounting plate
(2) Mounting bracket
(3) Heat sink

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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–
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

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Dimensions
Figure 2-7 Enclosure 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
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.
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.