Huawei SUN2000-175KTL-H0 User manual

SUN2000-(175KTL-H0, 185KTL-INH0, 185KTL-H1)
User Manual
Issue
02
Date
2019-06-05
HUAWEI TECHNOLOGIES CO., LTD.

Issue 02 (2019-06-05)
Copyright © Huawei Technologies Co., Ltd.
i
Copyright © Huawei Technologies Co., Ltd. 2019. All rights reserved.
No part of this document may be reproduced or transmitted in any form or by any means without prior
written consent of Huawei Technologies Co., Ltd.
Trademarks and Permissions
and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd.
All other trademarks and trade names mentioned in this document are the property of their respective
holders.
Notice
The purchased products, services and features are stipulated by the contract made between Huawei and
the customer. All or part of the products, services and features described in this document may not be
within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements,
information, and recommendations in this document are provided "AS IS" without warranties, guarantees or
representations of any kind, either express or implied.
The information in this document is subject to change without notice. Every effort has been made in the
preparation of this document to ensure accuracy of the contents, but all statements, information, and
recommendations in this document do not constitute a warranty of any kind, express or implied.
Huawei Technologies Co., Ltd.
Address:
Huawei Industrial Base
Bantian, Longgang
Shenzhen 518129
People's Republic of China
Website:
http://e.huawei.com

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About This Document
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About This Document
Overview
This document describes the SUN2000-175KTL-H0, SUN2000-185KTL-INH0, and
SUN2000-185KTL-H1 (SUN2000 for short) in terms of their installation, electrical
connections, commissioning, maintenance, and troubleshooting. Before installing and
operating the inverter, 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) plant operating personnel and qualified
electricians.
Symbol Conventions
The symbols that may be found in this document are defined as follows.
Symbol
Description
Indicates an imminently hazardous situation which,
if not avoided, will result in death or serious injury.
Indicates a potentially hazardous situation which, if
not avoided, could result in death or serious injury
Indicates a potentially hazardous situation which, if
not avoided, may result in minor or moderate injury.
Indicates a potentially hazardous situation which, if
not avoided, could result in equipment damage, data
loss, performance deterioration, or unanticipated
results.
NOTICE is used to address practices not related to
personal injury.

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About This Document
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Symbol
Description
Calls attention to important information, best
practices and tips.
NOTE is used to address information not related to
personal injury, equipment damage, and
environment deterioration.
Change History
Changes between document issues are cumulative. The latest document issue contains all
updates made in previous issues.
Issue 02 (2019-06-05)
Updated 2.2Appearance.
Updated 7.2.2.4 Setting Power Adjustment Parameters.
Issue 01 (2019-05-15)
This issue is used for first office application (FOA).

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User Manual
Contents
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Contents
About This Document.................................................................................................................... ii
1 Safety Precautions.........................................................................................................................1
2 Overview.........................................................................................................................................5
2.1 Product Overview.........................................................................................................................................................5
2.2 Appearance ...................................................................................................................................................................7
2.3 Label Description........................................................................................................................................................10
2.3.1 Label Description.....................................................................................................................................................10
2.3.2 Product Nameplate...................................................................................................................................................11
2.4 Working Principles......................................................................................................................................................12
2.4.1 Circuit Diagram .......................................................................................................................................................12
2.4.2 Working Modes........................................................................................................................................................12
3 Inverter Storage ...........................................................................................................................14
4 Installation....................................................................................................................................15
4.1 Checking Before Installation ......................................................................................................................................15
4.2 Preparing Tools...........................................................................................................................................................16
4.3 Determining the Installation Position .........................................................................................................................17
4.3.1 Environment Requirements .....................................................................................................................................17
4.3.2 Space Requirements.................................................................................................................................................18
4.4 Installing the Mounting Bracket .................................................................................................................................21
4.4.1 Support-mounted Installation ..................................................................................................................................22
4.4.2 Wall-mounted Installation........................................................................................................................................22
4.5 Installing the Inverter..................................................................................................................................................23
5 Electrical Connections................................................................................................................27
5.1 Precautions..................................................................................................................................................................27
5.2 Crimping an OT or DT Terminal ................................................................................................................................27
5.3 Opening the Maintenance Compartment Door ...........................................................................................................29
5.4 (Optional) Replacing the Crimping Module...............................................................................................................31
5.5 (Optional) Installing the Power Cable of the Tracking System ..................................................................................31
5.6 Connecting the AC Output Power Cable ....................................................................................................................32
5.7 Closing the Maintenance Compartment Door ............................................................................................................36
5.8 Installing the DC Input Power Cable..........................................................................................................................37

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5.9 Installing the Communications Cable.........................................................................................................................39
6 System Commissioning .............................................................................................................42
6.1 Check Before Power-on..............................................................................................................................................42
6.2 System Power-On.......................................................................................................................................................42
7 Man-Machine Interactions ........................................................................................................48
7.1 Operations with a USB Flash Drive............................................................................................................................48
7.1.1 Exporting Configurations ........................................................................................................................................48
7.1.2 Importing Configuration..........................................................................................................................................49
7.1.3 Exporting Data.........................................................................................................................................................50
7.1.4 Upgrading................................................................................................................................................................51
7.2 Operations of the SUN2000 App................................................................................................................................51
7.2.1 Operations Related to the Advanced User ...............................................................................................................52
7.2.1.1 Setting Grid Parameters........................................................................................................................................52
7.2.1.2 Setting Protection Parameters...............................................................................................................................53
7.2.1.3 Setting Feature Parameters ...................................................................................................................................53
7.2.2 Operations Related to the Special User....................................................................................................................57
7.2.2.1 Setting Grid Parameters........................................................................................................................................58
7.2.2.2 Setting Protection Parameters...............................................................................................................................59
7.2.2.3 Setting Feature Parameters ...................................................................................................................................61
7.2.2.4 Setting Power Adjustment Parameters..................................................................................................................64
8 Maintenance.................................................................................................................................67
8.1 System Power-Off.......................................................................................................................................................67
8.2 Routine Maintenance..................................................................................................................................................67
8.3 Replacing a Fan ..........................................................................................................................................................69
8.4 Troubleshooting..........................................................................................................................................................73
9 Handling the Inverter.................................................................................................................80
9.1 Removing the SUN2000.............................................................................................................................................80
9.2 Packing the SUN2000.................................................................................................................................................80
9.3 Disposing of the SUN2000.........................................................................................................................................80
10 Technical Data ...........................................................................................................................81
A Grid Code ....................................................................................................................................85

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1 Safety Precautions
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1 Safety Precautions
General Safety
Before performing any operation, read the precautions and instructions in this manual and
strictly follow the precautions and special safety instructions provided by Huawei to avoid
accidents.
The installation, operation, and maintenance of the equipment must comply with local laws
and regulations. The NOTICE, WARNING, and DANGER items in this document do not
cover all the safety cautions and are only supplementary to the laws and regulations. Huawei
assumes no responsibility for violation of general safety operation requirements or design,
production, and equipment 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.
Statement
Huawei will not be liable for any consequences of the following circumstances:
Damage during the transportation by the customer
Storage conditions that do not meet the requirements specified in this document
Installation or use in environments which are not specified in related international
standards
Failure to follow the operation instructions and safety precautions in this document
Operation of the product beyond specified parameter ranges
Unauthorized modifications to the product or software code or removal of the product
Device damage due to abnormal natural factors (force majeure, such as earthquake, fire,
and storm)
Personnel Requirements
Only qualified and trained electrical technicians are allowed to operate the device. Operators
need to meet the following requirements.
Be properly trained.
Read through this manual and master related safety precautions.
Get familiar with the safety specifications about the electrical system.

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Understand the components and functioning of a grid-tied PV power system and relevant
local standards.
Personal Safety
Wear personal protective equipment, including but not limited to safety shoes, protective
goggles, and safety gloves.
Before using a device, remove any conductors such as jewelry or watches to avoid
electric shock or burns.
Use tools in correct methods to avoid hurting people or damaging devices.
If there is a probability of personal injury or equipment damage during the operation of
the device, immediately stop operations on the equipment, report the case to the project
owner, and take feasible protective measures.
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.
Protection Label
Do not scrawl, damage, or block any warning label on the device.
System Installation
Never work with power-on during installation.
Ensure that the devices are not connected to a power supply or powered on before
finishing installation.
Do not install the device under bad weather conditions such as thunderstorms, raining,
snowing, or strong winds.
Ensure that the device is installed in a well ventilated environment.
Ensure that the heat dissipation system of the device is not blocked.
Do not open the host panel of the device.
Tighten the screws using tools when installing the device.
After installation, remove the packing materials from the equipment area.
Grounding
When installing the device, always make the ground connection first and disconnect it in
the end.
Do not damage the ground conductor.
Do not operate the device in the absence of a properly installed ground conductor.
The device must be connected permanently to the protective ground. Before operating
the device, check the electrical connection of it to ensure that it is securely grounded.
Electrical Connections

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Before connecting cables, ensure that the device is not damaged. Otherwise, electric shocks or
fire may occur.
Ensure that all electrical connections comply with local electrical standards.
Obtain approval from the country or local utility company before using the inverter in
grid-tied mode.
Ensure that the cables used in a grid-tied PV power system are properly connected and
insulated and meet specifications.
Before connecting a power cable, check that the label on the power cable is correct.
Before making electrical connections, switch off the disconnector on the upstream device
to cut the power supply if people may contact energized components.
When routing cables, ensure that a sufficient distance exists between the cables and heat
emitting equipment to prevent damage to the insulation layers of cables.
Signal cables and power cables should be bound separately.
Ensure that the cables you prepared meet local regulations.
Operations
High voltage generated by the device during operation may cause an electric shock, which
could result in death, serious injury, or serious property damage. Perform operations in strict
accordance with safety precautions specified in this document and other relevant documents.
Do not disconnect DC orAC power cables when the device is running.
Do not touch an energized device, as the enclosure is hot.
When the device is running, ensure that the heat dissipation system is not blocked to
prevent high temperature alarms and fire from damaging the device.
Commissioning
When the device is powered on for the first time, professional personnel is required to set
parameters correctly. Incorrect settings may result in inconsistency between the device and the
certification of the country or region where the device is located, affecting the normal
operation of the device.
Maintenance and Replacement
High voltage generated by the device during operation may cause an electric shock, which
could result in death, serious injury, or serious property damage. Prior to maintenance, power
off the devices and strictly comply with the safety precautions in this document and
associated documents to operate the devices.

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Only qualified professionals are allowed to remove safety facilities and inspect the
device.
Only personnel certified or authorized by Huawei are allowed to replace the device or
components (including software).
Any fault or error that might cause safety problems must be reported immediately to a
supervisor.
Maintain the device after you get familiar with this document and prepare the tools and
testing equipment.
Before maintaining the device, power it off and follow the instructions on the delayed
discharge label to ensure that the device is powered off.
The device has multiple inputs. Switch off all inputs before maintenance.
Temporary warning signs or fences must be placed to prevent unauthorized person from
entering the site.
If the device is faulty, contact your dealer.
The device can be powered on only after all faults are rectified. Failing to do so may
escalate faults or damage the device.

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2 Overview
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2 Overview
2.1 Product Overview
Function
The SUN2000 inverter is a three-phase grid-tied PV string inverter that converts the DC
power generated by PV strings intoAC power and feeds the power into the power grid.
Model
This document involves the following product models:
SUN2000-175KTL-H0
SUN2000-185KTL-INH0
SUN2000-185KTL-H1
Figure 2-1 Model description (SUN2000-185KTL-INH0 is used as an example)
Table 2-1 Model description
Tag
Meaning
Value
1
Series
SUN2000: three-phase grid-tied PV
string inverter
2
Power class
175K: The rated output power is
175 kW.
185K: The maximum active power
is 185 kW.
3
Topology
TL: transformerless
4
Region
IN: India

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Tag
Meaning
Value
5
Product code
H0/H1: product series with the 1500 V
DC input voltage
Network Application
The inverter applies to grid-tied PV systems for commercial rooftop PV plants and large PV
plants. Typically, a grid-tied PV system consists of the PV string, inverter, AC power
distribution unit, and step-up transformer.
Figure 2-2 Network application
(A) PV string
(B) Inverter
(C) AC distribution unit (ACDU)
(D) Step-up transformer
(E) Power grid
Supported Power Grid
The inverter supports the IT power grid.
Figure 2-3 Supported power grid

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2.2 Appearance
Dimensions
Front View
(1) PV connection indicator
(2) Grid-tied indicator
(3) Communication
indicator
(4) Alarm/Maintenance
indicator
(5) Host panel
(6) Maintenance
compartment
Table 2-2 LED description
Display
Category
Indicator Status
Meaning
PV
indication
LED1
LED4
-
Steady
green
-
At least one PV string is properly connected,
and the DC input voltage of the corresponding
MPPT circuit is at least 500 V.

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Display
Category
Indicator Status
Meaning
Blinking
green at
long
intervals
-
The test on the cable connection of PV strings
is complete, cables are correctly connected, and
the buzzer does not buzz.
Blinking
red at long
intervals
-
The test on the cable connection of PV strings
is in progress and the buzzer does not buzz.
Steady red
-
The test on the cable connection of PV strings
is complete, cables are incorrectly connected,
and the buzzer buzzes.
Blinking
green at
short
intervals
Red
An environmental fault occurs at DC side.
Off
-
The inverter disconnects from all PV strings, or
the DC input voltage of all MPPT circuits is
less than 500 V.
Grid-tied
indication
LED2
LED4
NA
Steady
green
-
The inverter is in grid-tied mode.
Blinking
green at
short
intervals
Red
An environmental fault occurs at AC side.
Off
-
The inverter is not in grid-tied mode.
Communicati
ons
indication
LED3
-
Blinking green at short
intervals
The inverter receives data over RS485 or
MBUS communication.
Off
The inverter has not received data over RS485
or MBUS communication for 10 seconds.
Alarm/O&M
indication
LED4
-
Steady red
A major alarm is generated.
Blinking red at short
intervals
A minor alarm is generated.
Blinking red at long
intervals
A warning alarm is generated.
Steady green
Local maintenance succeeds.
Blinking green at long
intervals
In local maintenance or shuts down over a
command.

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Display
Category
Indicator Status
Meaning
Blinking green at short
intervals
Local maintenance fails.
Off
No alarm is generated, and no local
maintenance operations are performed.
Local maintenance refers to operations performed after a universal serial bus (USB) flash drive,
Bluetooth module, WLAN module, or USB data cable is inserted into the USB port of the inverter.
For example, local maintenance includes configuration import and export using a USB flash drive,
and connecting to the SUN2000 app over a Bluetooth module, WLAN module, or USB data cable.
If the alarming and the local maintenance happen concurrently, the alarm/maintenance indicator
shows the local maintenance state first.After the USB flash drive, Bluetooth module, WLAN
module, or USB data cable is removed, the indicator shows the alarm state.
Bottom View
(1) DC input terminals (controlled by DC
SWITCH 1)
(2) DC switch 1 (DC SWITCH 1)
(3) DC input terminals (controlled by DC
SWITCH 2)
(4) DC switch 2 (DC SWITCH 2)
(5) DC input terminals (controlled by DC
SWITCH 3)
(6) DC switch 3 (DC SWITCH 3)
(7) Ventilation valve
(8) USB port (USB)
(9) Communications port (COM)
(10) AC output cable port
(11) Power cable port for the tracking
system

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2.3 Label Description
2.3.1 Label Description
Symbol
Name
Meaning
Running
warning
Potential hazards exist after the
inverter is powered on. Take
protective measures when
operating the inverter.
Burn warning
Do not touch a running inverter,
as the shell becomes hot during
operation.
Large current
warning
Before powering on the inverter,
ensure that the inverter is
grounded because there is a
large contact current after the
inverter is powered on.
Delayed
discharge
High voltage exists after the
inverter is powered on. Only
qualified and trained
electrical technicians are
allowed to perform
operations on the inverter.
Residual voltage exists after
the inverter is powered off. It
takes 15 minutes for the
inverter to discharge to the
safe voltage.
Refer to
documentation
Reminds operators to refer to the
documents shipped with the
inverter.
Grounding
Indicates the position for
connecting the protective
earthing (PE) cable.
Operation
warning
Do not remove the DC input
connector when the inverter is
running.
Fan operation
warning
High voltage exists after the
inverter is powered on. Do not
touch the fans when the inverter
is working.
Fan replacement
warning
Before replacing a fan,
disconnect its power connectors.

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Symbol
Name
Meaning
Inverter ESN
label
Indicates the inverter serial
number.
Weight label
The inverter needs to be carried
by four persons or using a pallet
truck.
2.3.2 Product Nameplate
Figure 2-4 Nameplate (SUN2000-175KTL-H0 is used as an example)
(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.
Icon
Name
Description
Environmentally friendly
use period (EFUP) mark
The product does not
pollute the environment
during the specified
period.

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Icon
Name
Description
EU waste electrical and
electronic equipment
(WEEE) mark
Do not dispose of the
product as household
garbage.
2.4 Working Principles
2.4.1 Circuit Diagram
The inverter receives inputs from 18 PV strings. Then the inputs are grouped into nine MPPT
circuits inside the inverter to track the maximum power point of the PV strings. The DC
power is then converted into three-phaseAC power through an inverter circuit. Surge
protection is supported on both the DC and AC sides.
Figure 2-5 Inverter conceptual diagram
2.4.2 Working Modes
The SUN2000 can work in Standby, Operating, or Shutdown mode.

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Figure 2-6 SUN2000 working modes
Table 2-3 Working mode description
Working
Mode
Description
Standby
The SUN2000 enters Standby mode when the external environment does not
meet the requirements for starting the SUN2000. In Standby mode:
The SUN2000 continuously performs self-check and enters Operating
mode once the operating requirements are met.
The SUN2000 enters Shutdown mode after detecting a shutdown
command or a fault after startup.
Operating
In Operating mode:
The SUN2000 converts DC power from PV strings into AC power and
feeds the power to the power grid.
The SUN2000 tracks the maximum power point to maximize the PV
string output.
The SUN2000 enters Shutdown mode after detecting a fault or a
shutdown command, and enters Standby mode after detecting that the
PV string output power is not suitable for connecting to the power grid
and producing power.
Shutdown
In Standby or Operating mode, the SUN2000 enters Shutdown mode
after detecting a fault or shutdown command.
In Shutdown mode, the SUN2000 enters Standby mode after detecting a
startup command or that the fault is rectified.

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3 Inverter Storage
The following requirements should be met if the inverter is not put into use directly:
Put the inverter in the original package. Keep the desiccant and seal it using the adhesive
tape.
Proper storage temperature and humidity are required.
The inverter should be stored in a clean and dry place and be protected from dust and
water vapor corrosion.
A maximum of four inverters can be stacked.
Regular inspection is required during the storage. Replace the packing materials as
necessary.
If the inverter has been stored for a long time, inspections and tests should be conducted
by qualified personnel before it is put into use.