Huawei SUN2000-330KTL-H1 User manual

SUN2000-(330KTL-H1, 330KTL-H2)
User Manual
Issue Draft A
Date 2022-08-30
HUAWEI TECHNOLOGIES CO., LTD.

Copyright © Huawei Technologies Co., Ltd. 2022. 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 specied 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 eort 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
Issue Draft A
(2022-08-30)
Copyright © Huawei Technologies Co., Ltd. i

About This Document
Purpose
This document describes the SUN2000-330KTL-H1 and SUN2000-330KTL-H2 (also
referred to as SUN2000) in terms of installation, 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.
Figures provided in this document are for reference only.
Intended Audience
This document is intended for photovoltaic (PV) plant operating personnel and
qualied electricians.
Symbol Conventions
The symbols that may be found in this document are dened 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.
SUN2000-(330KTL-H1, 330KTL-H2)
User Manual About This Document
Issue Draft A
(2022-08-30)
Copyright © Huawei Technologies Co., Ltd. ii

Symbol Description
Supplements the important information in the main text.
NOTE is used to address information not related to
personal injury, equipment damage, and environment
deterioration.
Change History
Issue Date Description
Draft A 2022-08-30 This issue is used for rst oce application
(FOA).
SUN2000-(330KTL-H1, 330KTL-H2)
User Manual About This Document
Issue Draft A
(2022-08-30)
Copyright © Huawei Technologies Co., Ltd. iii

Contents
About This Document................................................................................................................ ii
1 Safety Information.................................................................................................................. 1
1.1 Personal Safety.........................................................................................................................................................................2
1.2 Electrical Safety........................................................................................................................................................................4
1.3 Environment Requirements................................................................................................................................................. 6
1.4 Mechanical Safety................................................................................................................................................................... 8
2 Overview................................................................................................................................. 12
2.1 Product Models......................................................................................................................................................................12
2.2 Product Introduction............................................................................................................................................................ 13
2.3 Enclosure Labels.................................................................................................................................................................... 14
2.4 Component Description...................................................................................................................................................... 15
2.4.1 Product Appearance......................................................................................................................................................... 16
2.4.2 Indicator Status.................................................................................................................................................................. 18
2.5 Working Principles................................................................................................................................................................ 20
2.5.1 Circuit Diagram.................................................................................................................................................................. 20
2.5.2 Working Modes.................................................................................................................................................................. 20
3 Storage.....................................................................................................................................22
4 Installation..............................................................................................................................24
4.1 Checking Before Installation............................................................................................................................................. 24
4.2 Preparing Tools...................................................................................................................................................................... 24
4.3 Determining the Installation Position............................................................................................................................27
4.4 Installing the Mounting Bracket...................................................................................................................................... 30
4.5 Installing the SUN2000....................................................................................................................................................... 31
5 Installing Cables.................................................................................................................... 33
5.1 Precautions.............................................................................................................................................................................. 33
5.2 Preparing Cables................................................................................................................................................................... 33
5.3 Crimping an OT or DT Terminal...................................................................................................................................... 38
5.4 Installing PE Cables and AC Power Cables...................................................................................................................41
5.5 Installing DC Power Cables............................................................................................................................................... 46
5.6 Installing Communications Cables.................................................................................................................................. 50
6 Power-On Commissioning................................................................................................... 52
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6.1 Check Before Power-On...................................................................................................................................................... 52
6.2 System Power-On................................................................................................................................................................. 53
7 Man-Machine Interactions..................................................................................................55
7.1 Operations with the App.................................................................................................................................................... 55
7.1.1 App Introduction................................................................................................................................................................ 55
7.1.2 Downloading and Installing the App..........................................................................................................................56
7.1.3 Logging In to the App...................................................................................................................................................... 57
7.2 Upgrading the SUN2000 Using a USB Flash Drive................................................................................................... 60
8 Maintenance...........................................................................................................................62
8.1 Shutdown and Power-O.................................................................................................................................................. 62
8.2 Power-O for Maintenance.............................................................................................................................................. 62
8.3 Routine Maintenance.......................................................................................................................................................... 64
8.4 Replacing a Fan..................................................................................................................................................................... 66
8.5 Troubleshooting..................................................................................................................................................................... 69
9 Handling the Inverter...........................................................................................................79
9.1 Removing the SUN2000..................................................................................................................................................... 79
9.2 Packing the SUN2000..........................................................................................................................................................79
9.3 Disposing of the SUN2000................................................................................................................................................ 79
10 Technical Specications.....................................................................................................80
A Domain Name List of Management Systems.................................................................83
B Contact Information............................................................................................................. 84
C Acronyms and Abbreviations..............................................................................................86
SUN2000-(330KTL-H1, 330KTL-H2)
User Manual Contents
Issue Draft A
(2022-08-30)
Copyright © Huawei Technologies Co., Ltd. v

1 Safety Information
Statement
Before installing, operating, or maintaining the equipment, read this document,
strictly follow the instructions provided herein, and follow all the safety
instructions on the equipment and in this document.
The DANGER, WARNING, CAUTION, and NOTICE statements in this document
do not cover all the safety instructions. They are only supplements to the safety
instructions. The Company will not be liable for any consequences that may arise
due to violations of general safety requirements or safety standards concerning
the design, production, and usage of the equipment.
Ensure that the equipment is used in environments that meet its design
specications. Otherwise, the equipment may become faulty, and any resulting
malfunction, component damage, personal injury, or property damage will not be
covered under the warranty.
Comply with local laws and regulations during transportation, storage, installation,
operation, and maintenance.
Do not perform reverse engineering, decompilation, disassembly, adaptation,
implantation, or other derivative operations on the equipment software. Do not
study the internal implementation logic of the equipment, obtain the source code
of the equipment software, steal intellectual property rights, or disclose any of the
performance test results of the equipment software.
The Company will not be liable for any consequences in any of the following
circumstances:
● Equipment damage due to force majeure (such as earthquakes, oods,
volcanic eruptions, debris ows, lightning strikes, res, and wars)
● Operation beyond the conditions specied in this document
● Installation or use in environments which are not specied in relevant
international, national, or regional standards
● Failure to follow the operation instructions or safety precautions on the
product or in this document
● Unauthorized modications to the product or software code or removal of the
product
SUN2000-(330KTL-H1, 330KTL-H2)
User Manual 1 Safety Information
Issue Draft A
(2022-08-30)
Copyright © Huawei Technologies Co., Ltd. 1

● Damage caused during transportation by the customer or a third party
authorized by the customer
● Storage conditions that do not meet the requirements speci ied in this
document
● Failure to comply with local laws, regulations, and related standards due to
the materials and tools prepared by the customer
● Damage caused by the customer's negligence or improper operations or
third-party reasons
● Defects, malfunctions or damage caused by acts, events, negligence, or
accidents beyond the Company's reasonable control, including power outages
or electrical failures, theft, wars, riots, civil disturbances, terrorism, and
intentional or malicious damage, etc.
1.1 Personal Safety
D ANGER
Ensure that power is o during installation. Do not install or remove a cable with
power on. Transient contact between the core of the cable and the conductor will
generate electric arcs or sparks, which may cause a re or personal injury.
D ANGER
Non-standard and improper operations on the energized equipment may cause
re or electric shocks, resulting in property damage, personal injury, or even death.
D ANGER
Before operations, remove conductive objects such as watches, bracelets, bangles,
rings, and necklaces to prevent electric shocks.
D ANGER
During operations, use dedicated insulated tools to prevent electric shocks or short
circuits. The insulation and voltage resistance must comply with local laws and
regulations and IEC 62477-1/-2 or GB 311.
WARNING
During operations, wear personal protective equipment such as protective
clothing, insulated shoes, goggles, safety helmets, and insulated gloves.
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User Manual 1 Safety Information
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Copyright © Huawei Technologies Co., Ltd. 2

General Requirements
● Do not stop protective devices. Pay attention to the warnings, cautions, and
related precautionary measures in this document and on the equipment.
● If there is a likelihood of personal injury or equipment damage during
operations, immediately stop, report the case to the supervisor, and take
feasible protective measures.
● Do not power on the equipment before it is installed or con irmed by
professionals.
● Do not touch the power supply equipment directly or with conductors such as
damp objects. Before touching any conductor surface or terminal, measure
the voltage at the contact point to ensure that there is no risk of electric
shock.
● Do not touch operating equipment because the enclosure is hot.
● Do not touch a running fan with your hands, components, screws, tools, or
boards. Otherwise, personal injury or equipment damage may occur.
● In the case of a ire, immediately leave the building or the equipment area
and activate the ire alarm or call emergency services. Do not enter the
building on ire in any case.
Personnel Requirements
● Only professionals and trained personnel are allowed to operate the
equipment.
– Professionals: personnel who are familiar with the working principles and
structure of the equipment, trained or experienced in equipment
operations and are clear of the sources and degree of various potential
hazards in equipment installation, operation, maintenance
– Trained personnel: personnel who are trained in technology and safety,
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
● Personnel who plan to install or maintain the equipment must receive
adequate training, be able to correctly perform all operations, and understand
all necessary safety precautions and local relevant standards.
● Only qualied professionals or trained personnel are allowed to install,
operate, and maintain the equipment.
● Only qualied professionals are allowed to remove safety facilities and inspect
the equipment.
● Personnel who will perform special tasks such as electrical operations,
working at heights, and operations of special equipment should possess the
required local qualications.
● Only authorized professionals are allowed to replace the equipment or
components (including software).
● Only personnel who need to work on the equipment are allowed to access
the equipment.
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User Manual 1 Safety Information
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1.2 Electrical Safety
D ANGER
Non-standard and improper operations may result in re or electric shocks.
D ANGER
Prevent foreign matter from entering the equipment during operations. Otherwise,
equipment damage, load power derating, power failure, or personal injury may
occur.
WARNING
For the equipment that needs to be grounded, install the ground cable rst when
installing the equipment and remove the ground cable last when removing the
equipment.
CA UTION
Do not route cables behind the air intake and exhaust vents of the equipment.
General Requirements
● Installation, operation, and maintenance must be performed in the sequence
speciied in the manual. Do not change the structure or installation sequence
of the equipment without permission.
● Obtain approval from the national or local electric utility company before
connecting the equipment to the grid.
● Observe the power plant safety regulations, such as the operation and work
ticket mechanisms.
● Before performing operations on the equipment, check that all tools meet the
requirements and record the tools. After the operations are complete, collect
all of the tools to prevent them from being left inside the equipment.
● Before connecting power cables, check that cable labels are correct and cable
terminals are insulated.
● When installing the equipment, use a torque tool of a proper measurement
range to tighten the screws. When using a wrench to tighten the screws,
ensure that the wrench does not tilt and the torque error does not exceed
10% of the speciied value.
SUN2000-(330KTL-H1, 330KTL-H2)
User Manual 1 Safety Information
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● Ensure that bolts are tightened with a torque tool and marked in red and blue
after double-check. Installation personnel mark tightened bolts in blue.
Quality inspection personnel conrm that the bolts are tightened and then
mark them in red. (The marks should cross the edges of the bolts.)
Grounding
● If the equipment has multiple inputs, disconnect all the inputs before
operating the equipment.
● Before maintaining a downstream electrical device supply or power
distribution device, turn o the output switch of its power supply equipment.
● During equipment maintenance, attach "Do not switch on" labels near the
upstream and downstream switches or circuit breakers as well as warning
signs to prevent accidental connection. The equipment can be powered on
only after troubleshooting is complete.
● Do not open equipment panels.
● Check equipment connections periodically, ensuring that all screws are
securely tightened.
● A damaged cable must be replaced by the manufacturer or professionals to
avoid risks.
● Do not scrawl, damage, or block any labels or nameplates on the equipment.
Promptly replace labels that have worn out.
● Do not use solvents such as water, alcohol, or oil to clean electrical
components inside or outside of the equipment.
● Ensure that the grounding impedance of the equipment complies with local
electrical standards.
● Ensure that the equipment is connected permanently to the protective
ground. Before operating the equipment, check its electrical connection to
ensure that it is reliably grounded.
● Do not work on the equipment in the absence of a properly installed ground
conductor.
● Do not damage the ground conductor.
Cabling Requirements
● When selecting, installing, and routing cables, follow local safety regulations
and rules.
● When routing power cables, ensure that there is no coiling or twisting. Do not
join or weld power cables. If necessary, use a longer cable.
● Ensure that all cables are properly connected and insulated, and meet
specications.
● Ensure that the slots and holes for routing cables are free from sharp edges,
and that the positions where cables are routed through pipes or cable holes
SUN2000-(330KTL-H1, 330KTL-H2)
User Manual 1 Safety Information
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are equipped with cushion materials to prevent the cables from being
damaged by sharp edges or burrs.
● Ensure that all cables are securely bound. Route and bind cables so that they
appear neat and tidy and their cable sheaths are intact.
● After connecting cables, secure them using cable supports and cable clips.
Ensure that the cables in the backll area are in close contact with the ground
to prevent cable deformation or damage during backlling.
● If the external conditions (such as the cable layout or ambient temperature)
change, verify the cable usage in accordance with the IEC-60364-5-52 or local
laws and regulations. For example, check that the current-carrying capacity
meets requirements.
● When the temperature is low, violent impact or vibration may damage the
plastic cable sheathing. To ensure safety, comply with the following
requirements:
– Cables can be laid or installed only when the temperature is higher than
0°C. Handle cables with caution, especially at a low temperature.
– Cables stored at subzero temperatures must be stored at room
temperature for at least 24 hours before they are laid out.
● Do not perform any improper operations, for example, dropping cables
directly from a vehicle. Otherwise, the cable performance may deteriorate due
to cable damage, which aects the current-carrying capacity and temperature
rise.
1.3 Environment Requirements
D ANGER
Do not expose the equipment to ammable or explosive gas or smoke. Do not
perform any operation on the equipment in such environments.
D ANGER
Do not place the equipment near heat sources or re sources, such as smoke,
candles, heaters, or other heating devices. Overheat may damage the equipment
or cause a re.
WARNING
Install the equipment in an area far away from liquids. Do not install it under
areas prone to condensation, such as under water pipes and air exhaust vents, or
areas prone to water leakage, such as air conditioner vents, ventilation vents, or
feeder windows of the equipment room. Ensure that no liquid enters the
equipment to prevent faults or short circuits.
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User Manual 1 Safety Information
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WARNING
●To prevent damage or ire due to high temperature, ensure that the ventilation
vents or heat dissipation systems are not obstructed or covered by other objects
while the equipment is running.
General Requirements
●Ensure that the equipment is stored in a clean, dry, and well ventilated area
with proper temperature and humidity and is protected from dust and
condensation.
● Do not install or run the equipment beyond the technical specications.
Otherwise, its performance and safety will be compromised.
●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, performing outdoor installation, and opening
doors) in harsh weather conditions such as lightning, rain, snow, and level 6
or stronger wind.
● Do not install the equipment in an environment with direct sunlight, dust,
smoke, volatile or corrosive gases, infrared and other radiations, organic
solvents, or salty air.
● Do not install the equipment in an environment with conductive metal or
magnetic dust.
● Do not install the equipment in an area conducive for the growth of
microorganisms such as fungus or mildew.
● Do not install the equipment in an area with strong vibration, noise, or
electromagnetic interference.
● Ensure that the ground in the installation environment is solid, free from
spongy or soft soil, and not prone to subsidence. The site must not be located
in a low-lying land or an area prone to water accumulation, and the
horizontal level of the site must be above the highest water level of that area
in history.
● Before opening doors during the installation, operation, and maintenance of
the equipment, clean up any water, ice, snow, or other foreign objects on the
top of the equipment to prevent foreign objects from falling into the
equipment.
● When installing the equipment, ensure that the installation surface is solid
enough to bear the weight of the equipment.
● After installing the equipment, remove the packing materials such as cartons,
foam, plastics, and cable ties from the equipment area.
SUN2000-(330KTL-H1, 330KTL-H2)
User Manual 1 Safety Information
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(2022-08-30)
Copyright © Huawei Technologies Co., Ltd. 7

1.4 Mechanical Safety
WARNING
Ensure that all necessary tools are ready and inspected by a professional
organization. Do not use tools that have signs of scratches or fail to pass the
inspection or whose inspection validity period has expired.
WARNING
Do not drill holes into the equipment. Doing so may aect the sealing
performance and electromagnetic containment of the equipment and damage
components or cables inside. Metal shavings from drilling may short-circuit boards
inside the equipment.
General Requirements
● Repaint any scratched surfaces caused during equipment transportation or
installation in a timely manner. Scratched equipment should not be exposed
to an outdoor environment for an extended period of time.
● Do not perform operations such as arc welding and cutting on the equipment
without evaluation by the Company.
● Do not install other devices on the top of the equipment without evaluation
by the Company.
● When performing operations (such as hoisting or installing an awning) over
the top of the equipment, take measures to protect the equipment against
damage.
● Use correct tools and operate them in the correct way.
Moving Heavy Objects
● Be cautious to prevent injury when moving heavy objects.
● If multiple persons need to move a heavy object together, determine the
manpower and work division with consideration of height and other
conditions to ensure that the weight is equally distributed.
● If two persons or more move a heavy object together, ensure that the object
is lifted and landed simultaneously and moved at a uniform pace under the
supervision of one person.
● Wear personal protective gears such as protective gloves and shoes when
manually moving the equipment.
SUN2000-(330KTL-H1, 330KTL-H2)
User Manual 1 Safety Information
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Copyright © Huawei Technologies Co., Ltd. 8

● To move an object by hand, approach to the object, squat down, and then lift
the object gently and stably by the force of the legs instead of your back. Do
not lift it suddenly or turn your body around.
● Do not quickly lift a heavy object above your waist. Place the object on a
workbench that is half-waist high or any other appropriate place, adjust the
positions of your palms, and then lift it.
● Move a heavy object stably with balanced force at an even and low speed. Put
down the object stably and slowly to prevent any collision or drop from
scratching the surface of the equipment or damaging the components and
cables.
● When moving a heavy object, be aware of the workbench, slope, staircase,
and slippery places. When moving a heavy object through a door, ensure that
the door is wide enough to move the object and avoid bumping or injury.
● When transferring a heavy object, move your feet instead of turning your
waist around. When lifting and transferring a heavy object, ensure that your
feet point to the target direction of movement.
● When transporting the equipment using a pallet truck, ensure that the forks
are properly positioned so that the equipment does not topple. Before moving
the equipment, secure it to the pallet truck using ropes. When moving the
equipment, assign dedicated personnel to take care of it.
● Choose sea or roads in good conditions for transportation as transportation
by railway or air is not supported. Avoid tilt or jolt during transportation.
Using Ladders
● Use wooden or insulated ladders when you need to perform live-line working
at heights.
● Platform ladders with protective rails are preferred. Single ladders are not
recommended.
● Before using a ladder, check that it is intact and conrm its load bearing
capacity. Do not overload it.
● Ensure that the ladder is securely positioned and held rm.
● When climbing up the ladder, keep your body stable and your center of
gravity between the side rails, and do not overreach to the sides.
● When a step ladder is used, ensure that the pull ropes are secured.
● If a single ladder is used, the recommended angle for the ladder against the
oor is 75 degrees, as shown in the following gure. A square can be used to
measure the angle.
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User Manual 1 Safety Information
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● If a single ladder is used, ensure that the wider end of the ladder is at the
bottom, and take protective measures to prevent the ladder from sliding.
● If a single ladder is used, do not climb higher than the fourth rung of the
ladder from the top.
● If you use a single ladder to climb up to a platform, ensure that the ladder is
at least 1 m higher than the platform.
Hoisting
● Only trained and qualied personnel are allowed to perform hoisting
operations.
● Install temporary warning signs or fences to isolate the hoisting area.
● Ensure that the foundation where hoisting is performed on meets the load-
bearing requirements.
● Before hoisting objects, ensure that hoisting tools are rmly secured onto a
xed object or wall that meets the load-bearing requirements.
● During hoisting, do not stand or walk under the crane or the hoisted objects.
● Do not drag steel ropes and hoisting tools or bump the hoisted objects
against hard objects during hoisting.
● Ensure that the angle between two hoisting ropes is no more than 90
degrees, as shown in the following gure.
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User Manual 1 Safety Information
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(2022-08-30)
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Drilling Holes
● A welder must have a work permit. Obtain consent from the customer before
welding.
● Wear protective equipment such as safety goggles and protective gloves when
drilling holes.
● To avoid short circuits or other risks, do not drill holes into buried pipes or
cables.
● When drilling holes, protect the equipment from shavings. After drilling, clean
up any shavings.
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User Manual 1 Safety Information
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Copyright © Huawei Technologies Co., Ltd. 11

2 Overview
2.1 Product Models
Model Number Description
This document involves the following product models:
● SUN2000-330KTL-H1
● SUN2000-330KTL-H2
Figure 2-1 Model number
No. Item Description
1 Series name SUN2000: grid-tied solar inverter
2 Power 330K: The power level is 330 kW.
3 Topology TL: transformerless
4 Design code H1/H2: product series with the 1500 V DC input
voltage
Model Identication
You can obtain the inverter model from the model label on the external package
and the nameplate on the side of the enclosure.
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User Manual 2 Overview
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Figure 2-2 Position of the model label on the external package
(1) Position of the model label
2.2 Product Introduction
Function
The SUN2000 is a three-phase grid-tied PV string inverter that converts the DC
power generated by PV strings into AC power and feeds the power into the power
grid.
Networking Application
The SUN2000 applies to grid-tied PV systems for commercial rooftops and large
power plants. Typically, a grid-tied PV system consists of the PV strings, inverter,
AC power distribution unit, and step-up transformer.
Figure 2-3 Networking application
(1) PV string (2) SUN2000 (3) AC power distribution unit
(4) Step-up transformer (5) Power grid
NO TE
Connect the SUN2000 to a dedicated power transformer instead of a low-voltage overhead
power cable.
Power Grid Type
The SUN2000 supports IT power grids
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Figure 2-4 Power grid type
2.3 Enclosure Labels
Symbol Name Meaning
Operation warning Potential hazards exist after the
SUN2000 is powered on. Take
protective measures when operating
the SUN2000.
Burn warning Do not touch the SUN2000 when it is
running because its enclosure is hot.
Large current warning Before powering on the SUN2000,
ensure that the SUN2000 is
grounded because there is a large
contact current after the SUN2000 is
powered on.
Delayed discharge ● High voltage exists after the
SUN2000 is powered on. Only
qualied and trained electrical
technicians are allowed to
perform operations on the
SUN2000.
● Residual voltage exists after the
SUN2000 is powered o. It takes
15 minutes for the SUN2000 to
discharge to the safe voltage.
Refer to
documentation
Reminds operators to refer to the
documents delivered with the
SUN2000.
Grounding Indicates the position for connecting
the ground cable.
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User Manual 2 Overview
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