Huawei SUN2000-90KTL User manual

SUN2000-(90KTL, 95KTL, 100KTL, 105KTL)
Series
User Manual
Issue
10
Date
2020-03-28
HUAWEI TECHNOLOGIES CO., LTD.

Issue 10 (2020-03-28)
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

SUN2000-(90KTL, 95KTL, 100KTL, 105KTL) Series
User Manual
About This Document
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About This Document
Purpose
This document describes the SUN2000-90KTL-H0, SUN2000-90KTL-H1,
SUN2000-90KTL-H2, SUN2000-95KTL-INH0, SUN2000-95KTL-INH1,
SUN2000-100KTL-H0, SUN2000-100KTL-H1, SUN2000-100KTL-H2, and
SUN2000-105KTL-H1 (SUN2000 for short) in terms of their installation, electrical
connections, commissioning, maintenance, and troubleshooting. 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 photovoltaic (PV) power plant personnel and qualified
electrical technicians.
Symbol Conventions
The symbols that may be found in this document are defined as follows.
Symbol
Remarks
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.

SUN2000-(90KTL, 95KTL, 100KTL, 105KTL) Series
User Manual
About This Document
Issue 10 (2020-03-28)
Copyright © Huawei Technologies Co., Ltd.
iii
Change History
Changes between document issues are cumulative. The latest document issue contains all
updates made in previous issues.
Issue 10 (2020-03-28)
Updated 4.5 Installing the SUN2000.
Updated 5.2 Preparing Cables.
Updated 5.6 Installing the DC Input Power Cable.
Updated B Grid Codes.
Issue 09 (2020-02-18)
Updated 7.1 Operations with the App.
Updated 10 Technical Data.
Issue 08 (2019-12-18)
Updated 3 Storage.
Added 8.2 Power-Off for Troubleshooting.
Issue 07 (2019-07-17)
Updated 2.3.1 Appearance.
Updated 10 Technical Data.
Issue 06 (2019-06-27)
Updated 5.2.1 MBUS Communication.
Updated 7.1.3 Logging In to the App.
Issue 05 (2018-11-30)
Updated 5.8 (Optional) Installing the Power Cable of the Tracking System.
Issue 04 (2018-10-23)
Updated 2.2 Product Introduction.
Updated 10 Technical Data.
Issue 03 (2018-07-23)
Added description about the SUN2000-90KTL-H2, SUN2000-95KTL-INH1,
SUN2000-100KTL-H2, and SUN2000-105KTL-H1 models.

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Issue 02 (2018-06-23)
Updated 10 Technical Data.
Issue 01 (2018-05-17)
This issue is used for first office application (FOA).

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Contents
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Contents
About This Document.................................................................................................................... ii
1 Safety Precautions.........................................................................................................................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 Overview.........................................................................................................................................7
2.1 Models..........................................................................................................................................................................7
2.2 Product Introduction .....................................................................................................................................................9
2.3 Product Appearance....................................................................................................................................................12
2.3.1 Appearance ..............................................................................................................................................................12
2.3.2 Indicator Status ........................................................................................................................................................16
2.3.3 Label Description.....................................................................................................................................................17
2.4 Working Principles......................................................................................................................................................19
2.4.1 Circuit Diagram .......................................................................................................................................................19
2.4.2 Working Modes........................................................................................................................................................20
3 Storage...........................................................................................................................................23
4 Installation....................................................................................................................................25
4.1 Checking Before Installation ......................................................................................................................................25
4.2 Tool Preparation..........................................................................................................................................................26
4.3 Determining the Installation Position .........................................................................................................................27
4.4 Installing the Mounting Bracket .................................................................................................................................32
4.4.1 Support-Mounted Installation..................................................................................................................................32
4.4.2 Wall-Mounted Installation .......................................................................................................................................33
4.5 Installing the SUN2000 ..............................................................................................................................................34
5 Electrical Connections................................................................................................................39
5.1 Precautions..................................................................................................................................................................39
5.2 Preparing Cables.........................................................................................................................................................39

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5.2.1 MBUS Communication ...........................................................................................................................................39
5.2.2 RS485 Communication............................................................................................................................................43
5.3 Installing the PE Cable ...............................................................................................................................................48
5.4 Opening the Maintenance Compartment Door ...........................................................................................................49
5.5 Connecting an AC Output Power Cable .....................................................................................................................50
5.6 Installing the DC Input Power Cable..........................................................................................................................54
5.7 Connecting the RS485 Communications Cable..........................................................................................................57
5.8 (Optional) Installing the Power Cable of the Tracking System ..................................................................................60
5.9 Closing the Maintenance Compartment Door ............................................................................................................62
6 Commissioning............................................................................................................................64
6.1 Checking Before Power-On........................................................................................................................................64
6.2 Powering On the SUN2000 ........................................................................................................................................64
7 Man-Machine Interactions ........................................................................................................66
7.1 Operations with the App.............................................................................................................................................66
7.1.1 App Introduction......................................................................................................................................................66
7.1.2 Downloading and Installing the App .......................................................................................................................68
7.1.3 Logging In to the App..............................................................................................................................................68
7.1.4 Operations Related to theAdvanced User ...............................................................................................................73
7.1.4.1 Setting Grid Parameters........................................................................................................................................73
7.1.4.2 Setting Protection Parameters...............................................................................................................................73
7.1.4.3 Setting Feature Parameters ...................................................................................................................................74
7.1.5 Operations Related to the Special User....................................................................................................................78
7.1.5.1 Setting Grid Parameters........................................................................................................................................78
7.1.5.2 Setting Protection Parameters...............................................................................................................................80
7.1.5.3 Setting Feature Parameters ...................................................................................................................................82
7.1.5.4 Setting Power Adjustment Parameters..................................................................................................................85
7.2 Operations with a USB Flash Drive............................................................................................................................90
7.2.1 Exporting Configurations ........................................................................................................................................90
7.2.2 Importing Configurations ........................................................................................................................................91
7.2.3 Exporting Data.........................................................................................................................................................92
7.2.4 Upgrading................................................................................................................................................................93
8 Maintenance.................................................................................................................................95
8.1 Powering Off the SUN2000........................................................................................................................................95
8.2 Power-Off for Troubleshooting...................................................................................................................................95
8.3 Routine Maintenance..................................................................................................................................................96
8.4 Troubleshooting..........................................................................................................................................................98
9 Handling the Inverter...............................................................................................................105
9.1 Removing the SUN2000...........................................................................................................................................105
9.2 Packing the SUN2000...............................................................................................................................................105
9.3 Disposing of the SUN2000.......................................................................................................................................105

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10 Technical Data .........................................................................................................................106
10.1 SUN2000-(90KTL, 95KTL) Series Technical Data ...............................................................................................106
10.2 SUN2000-(100KTL, 105KTL) Series Technical Data............................................................................................109
A Domain Name List of Management Systems.....................................................................113
B Grid Codes .................................................................................................................................114
C Acronyms and Abbreviations................................................................................................121

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1 Safety Precautions
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1 Safety Precautions
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 Overview
2.1 Models
Model Number Description
This document involves the following product models:
SUN2000-90KTL-H0
SUN2000-90KTL-H1
SUN2000-90KTL-H2
SUN2000-95KTL-INH0
SUN2000-95KTL-INH1
SUN2000-100KTL-H0
SUN2000-100KTL-H1
SUN2000-100KTL-H2
SUN2000-105KTL-H1
The products look alike. The SUN2000-95KTL-INH0 is used as an example.
Figure 2-1 Model number
Table 2-1 Model number description
No.
Meaning
Description
1
Product
SUN2000: grid-tied PV inverter

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No.
Meaning
Description
2
Power
90K: The power level is 90 kW.
95K: The power level is 95 kW.
100K: The power level is 100 kW.
105K: The power level is 105 kW.
3
Topology
TL: transformerless
4
Region
IN: India
5
Design code
H0/H1/H2: product series with the 1500 V DC input
voltage
Model Identification
You can query the SUN2000 number by the model label on the external package and the
nameplate on the side of the enclosure.
Figure 2-2 Label position on the external package
(1) Position of the model label

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Figure 2-3 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.
2.2 Product Introduction
Function
The SUN2000 is a 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.
Features
Intelligent
Six independent maximum power point tracking (MPPT) circuits and 12 PV string inputs:
Supports the flexible configuration of 2+2+2+2+2+2 strings.
12 routes of high-precision smart PV string monitoring: Help identify and rectify
exceptions timely.

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MBUS networking: Uses the existing power line for communication and does not require
an additional communications cable, which reduces the construction and maintenance
costs and improves communication reliability and efficiency.
Smart I-V curve diagnosis: Implements I-V scanning and health diagnosis for PV strings.
In this way, potential risks and faults can be detected in time, improving the plant
operation & maintenance (O&M) quality.
Safe
Embedded DC andAC SPDs: all-dimensional surge protection
Embedded residual current monitoring unit: Immediately disconnects from the power
grid upon detecting that the residual current exceeds the threshold.
Reliable
Natural cooling
Free fuse design
Protected to IP65.
Effective design against ground subsidence: The AC terminal block can be pulled down
by up to 50 mm due to the pulling force.
Network Application
The SUN2000 applies to distributed grid-tied commercial PV systems and large-scale
grid-tied PV plants. Typically, a grid-tied PV system consists of the PV string, SUN2000, AC
combiner box, and step-up transformer.
Figure 2-4 Network application
(A) PV string
(B) SUN2000
(C) AC combiner box
(D) Step-up transformer
(E) Power grid
-
The SUN2000 is powered by a dedicated power transformer instead of connecting to low voltage
overhead power lines.
Supported Power Grid
The SUN2000 supports the IT power grid.

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Figure 2-5 Supported power grid
The SUN2000 can also apply to the AC power system with the neutral point grounding of the step-up
transformer. The SUN2000 itself does not connect to any neutral wire.
Figure 2-6 AC power system with the neutral point grounding

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2.3 Product Appearance
2.3.1 Appearance
Front View
Figure 2-7 Front view
(1) Maintenance compartment door
(2) Host panel
Rear View
Figure 2-8 Rear view
(1) Mounting plate
(2) Heat sink