Huawei SUN2000-30KTL-A User manual

SUN2000-(30KTL-A, 33KTL, 40KTL)
User Manual
Issue
04
Date
2016-06-20
HUAWEI TECHNOLOGIES CO., LTD.

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Copyright © Huawei Technologies Co., Ltd. 2016. 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://www.huawei.com
Email:
[email protected]

SUN2000-(30KTL-A, 33KTL, 40KTL)
User Manual
About This Document
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About This Document
Purpose
This document describes the SUN2000-30KTL-A/33KTL/40KTL (SUN2000 for short) in
terms of its installation, electrical connections, commissioning, maintenance, and
troubleshooting. Understand the safety information and get familiar with the SUN2000
functions and features before installing and operating the SUN2000.
The figures provided in this document are for reference only. The actual product prevails.
This document is subject to update and revision. You can log in to
http://support.huawei.com/carrier, and download the latest version.
Intended Audience
This document is intended for photovoltaic (PV) power station personnel and qualified
electrical technicians.
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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User Manual
About This Document
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Symbol
Description
Calls attention to important information, best practices and
tips.
NOTE is used to address information not related to personal
injury, equipment damage, and environment deterioration.
Change History
Changes between document issues are cumulative. Therefore, the latest document issue
contains all updates made in previous issues.
Issue 04 (2016-06-20)
Added SUN2000-30KTL-A.
Issue 03 (2015-12-01)
Added Max. inverter backfeed current to the array to chapter 10 Technical Specifications.
Issue 02 (2015-08-10)
This issue is the second official release.
Issue 01 (2015-02-10)
This issue is the first official release.

SUN2000-(30KTL-A, 33KTL, 40KTL)
User Manual
Contents
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Contents
About This Document.................................................................................................................... ii
1 Safety Precautions.........................................................................................................................1
2 Overview.........................................................................................................................................4
2.1 Introduction ..................................................................................................................................................................4
2.2 Appearance ...................................................................................................................................................................6
2.3 Label Conventions......................................................................................................................................................10
2.4 Working Process .........................................................................................................................................................14
3 Inverter Storage ...........................................................................................................................17
4 Installation....................................................................................................................................18
4.1 Checking Before Installation......................................................................................................................................18
4.2 Tools ...........................................................................................................................................................................19
4.3 Wall-mounting the SUN2000 .....................................................................................................................................23
4.3.1 Determining the Installation Position ......................................................................................................................23
4.3.2 Moving the SUN2000..............................................................................................................................................28
4.3.3 Installing a Rear Panel.............................................................................................................................................28
4.3.4 Installing the SUN2000 ...........................................................................................................................................32
4.4 Support-mounting the SUN2000 ................................................................................................................................36
4.4.1 Determining the Installation Position ......................................................................................................................36
4.4.2 Moving the SUN2000..............................................................................................................................................39
4.4.3 Installing a Rear Panel.............................................................................................................................................39
4.4.4 Installing the SUN2000 ...........................................................................................................................................41
5 Electrical Connections................................................................................................................42
5.1 Connecting PGND Cables..........................................................................................................................................42
5.2 Opening the Maintenance Compartment Door...........................................................................................................44
5.3 Installing AC Output Power Cables............................................................................................................................46
5.4 Connecting DC Input Power Cables...........................................................................................................................51
5.5 Connecting Communications Cables..........................................................................................................................59
5.5.1 Communication Mode Description..........................................................................................................................59
5.5.2 Selecting a Communication Mode...........................................................................................................................60
5.5.3 Connecting RS485 Communications Cables...........................................................................................................60
5.6 Installation Verification...............................................................................................................................................66

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5.7 Closing the Maintenance Compartment Door ............................................................................................................66
6 System Commissioning .............................................................................................................69
6.1 Powering On the SUN2000 ........................................................................................................................................69
6.2 Powering Off the SUN2000........................................................................................................................................75
7 Man-Machine Interactions ........................................................................................................76
7.1 Operations with a USB Flash Drive............................................................................................................................76
7.1.1 Exporting Configurations ........................................................................................................................................76
7.1.2 Importing Configurations ........................................................................................................................................78
7.1.3 Exporting Data.........................................................................................................................................................79
7.1.4 Upgrading................................................................................................................................................................80
7.2 Operations with a SmartLogger..................................................................................................................................81
7.3 Operations with the NMS...........................................................................................................................................81
7.4 Operations with the SUN2000 APP............................................................................................................................81
8 System Maintenance ..................................................................................................................82
8.1 Routine Maintenance..................................................................................................................................................82
8.2 Troubleshooting..........................................................................................................................................................83
9 Handling the Inverter.................................................................................................................91
9.1 Removing the SUN2000.............................................................................................................................................91
9.2 Packing the SUN2000.................................................................................................................................................91
9.3 Disposing of the SUN2000.........................................................................................................................................91
10 Technical Specifications ..........................................................................................................92
A Power Grid Standard Codes ....................................................................................................97
B Acronyms and Abbreviations ................................................................................................101

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1 Safety Precautions
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1 Safety Precautions
Personnel Requirements
Only qualified and trained electrical technicians are allowed to install and operate the
inverter.
Operators should understand the components and functioning of a grid-tied PV power
system and be familiar with relevant local standards.
Read this document thoroughly before operations. Huawei shall not be liable for any
consequence caused by violation of the storage, transportation, installation, and operation
regulations specified in this document.
Sign Protection
Do not tamper with any warning signs on the inverter enclosure because these signs
contain important information about safe operation.
Do not tamper with the nameplate on the inverter enclosure because it contains important
product information.
Do not remove the warranty label from the inverter enclosure. Otherwise, product
warranty will be forfeited.
Installation
Ensure that the inverter is not connected to a power supply and is not powered on before
starting installation.
Ensure that there are no objects within 200 mm, 200 mm, 500 mm, 600 mm, and 1000
mm of the left, right, top, bottom, and front of the inverter, respectively. This is to allow
sufficient space for installation and heat dissipation. If you have any questions about the
distance, consult the local technical support engineers.
Ensure that the inverter is installed in a well ventilated environment.
Ensure that the inverter heat sinks are free from blockage.

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Open the maintenance compartment door of the chassis before connecting cables. Do not
perform any operation on other components inside the chassis except connectingAC
power cables and communications cables.
Cable Connections
Before connecting cables, ensure that the inverter is securely positioned and not damaged in
any way. Otherwise, electric shocks or fire may occur.
Ensure that all electrical connections comply with local electrical standards.
Obtain approval from the local power supply department before using the inverter to
generate electricity in grid-tied mode.
Ensure that the cables used in a grid-tied PV power system are properly connected and
insulated and meet specifications.
Operation
High voltages may cause electric shocks and serious injuries during inverter operating.
Strictly comply with the safety precautions in this document and associated documents when
operating the inverter.
Do not touch an operating inverter because the heat sinks may have a temperature of
greater than 60ºC and may cause burns when the inverter is operating.
Follow local laws and regulations when operating the equipment.
Maintenance and Replacement
High voltages may cause electric shocks and serious injuries during inverter operating.
Therefore, before maintenance, power off the inverter and strictly comply with the safety
precautions in this document and associated documents to operate the inverter.
Maintain the inverter with sufficient knowledge of this document and proper tools and
testing equipment.
Before performing maintenance tasks, power off the inverter and wait at least 5 minutes.
Place temporary warning signs or erect fences to prevent unauthorized access to the
maintenance site.
Rectify any faults that may compromise the inverter security performance before
powering on the inverter again.

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1 Safety Precautions
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Observe ESD precautions during the maintenance.
For personal safety, wear insulation gloves and protective shoes.

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2 Overview
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2 Overview
2.1 Introduction
Function
The SUN2000 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.
Models
Figure 2-1 shows a model number of the SUN2000, using SUN2000-30KTL-A as an
example.
Figure 2-1 Model number description
Table 2-1 lists all models of the SUN2000 and their rated output power.
Table 2-1 SUN2000 models and rated output power
Model
Rated Output Power
SUN2000-30KTL-A
30 kW
SUN2000-33KTL
30 kW
SUN2000-40KTL
36 kW

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Network Application
The SUN2000 applies to grid-tied PV power systems for commercial rooftops and large
power stations. Typically, a grid-tied PV power system consists of PV strings, grid-tied
inverters, AC distribution units (ACDUs), and isolation transformer, as shown in Figure 2-2.
Figure 2-2 NetworkApplication
(A) PV string
(B) SUN2000
(C) ACDU
(D) Isolation transformer
(E) Power grid
Supported Power Grids
The SUN2000-33KTL supports the power grid modes TN-S, TN-C, TN-C-S, and TT, as
shown in Figure 2-3. The SUN2000-30KTL-Aand SUN2000-40KTL only support the power
grid mode IT, as shown in Figure 2-4.
Figure 2-3 Power grid modes supported by the SUN2000-33KTL

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Figure 2-4 Power grid modes supported by the SUN2000-30KTL-Aand SUN2000-40KTL
The SUN2000-30KTL-A and SUN2000-40KTL are mainly used for medium-voltage power grids. They
deliver three-phase, three-wire output and then are fed to a medium-voltage power grid over a step-up
transformer.
2.2 Appearance
Dimensions
Figure 2-5 shows the SUN2000 dimensions.
Figure 2-5 SUN2000 dimensions (unit: mm)

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Front view
Figure 2-6 shows the SUN2000 front view.
Figure 2-6 SUN2000 front view
(1) Indicators
(2) Host panel
(3) Maintenance compartment door
Table 2-2 describes the LED indicators.
Table 2-2 Description of indicators from left to right
Indicator
Status
Meaning
PV connection
indicator
Steady green
At least one PV string is
properly connected, and the DC
input voltage of the
corresponding MPPT circuit is
higher than or equal to 200 V.
Off
The inverter disconnects from all
PV strings, or the DC input
voltage of each MPPT circuit is
less than 200 V.
Grid-tie indicator
Steady green
The SUN2000 is grid-tied.
Off
The SUN2000 is not grid-tied.
Communication
indicator
Blinking green fast (on for 0.5s
and off for 0.5s)
The inverter receives data over
RS485/PLC communication.

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Indicator
Status
Meaning
Off
The inverter has not received
data over RS485/PLC
communication for 10 seconds.
Alarm/Maintenance
indicator
Alarm state
Blinking red
slowly (on for
1s and then off
for 4s)
The SUN2000 has generated a
warning.
Blinking red
fast (on for
0.5s and then
off for 0.5s)
The SUN2000 has generated a
minor alarm.
Steady red
The SUN2000 has generated a
critical alarm.
Local
maintenance
state
Blinking green
slowly (on for
1s and then off
for 1s)
Local maintenance is in
progress.
Blinking green
fast (on for
0.125s and off
for 0.125s)
Local maintenance has failed.
Steady green
Local maintenance is successful.
Local maintenance refers to operations performed after a universal serial bus (USB) flash drive,
Bluetooth module, or USB data cable is inserted into the USB port of the SUN2000. For example,
local maintenance includes data import and export using a USB flash drive and connecting to the
SUN2000 APP over a Bluetooth module or USB data cable.
If alarming and local maintenance happen concurrently, the alarm/maintenance indicator shows the
local maintenance state first. After the USB flash drive, Bluetooth module, or USB data cable is
removed, the indicator shows the alarm state.
Rear View
Figure 2-7 shows the SUN2000 rear view.

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Figure 2-7 SUN2000 rear view
(1) Heat sink
(2) Mounting bracket
Bottom view
Figure 2-8 shows the SUN2000 bottom view.
Figure 2-8 SUN2000 bottom view

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No.
Component Name (Silk Screen)
Description
1
DC switch (DC SWITCH)
N/A
2
Positive DC input terminal (+)
Six routes
3
USB port (USB)
N/A
4
RS485 port (COM1)
The inner diameter ranges from 14
mm to 18 mm
5
Protection ground screw
N/A
6
AC output port (AC OUTPUT)
The inner diameter ranges from 24
mm to 32 mm
7
Vent valve
2 PCS
8
Negative DC input terminal (–)
Six routes
9
Antenna (ANT)
Reserved WiFi port
10
RS485 port (COM2)
The inner diameter ranges from 14
mm to 18 mm
2.3 Label Conventions
Symbols
Table 2-3 describes all symbols on the SUN2000.
Table 2-3 Symbols
Symbol
Label
Meaning
Delay discharge
There are high voltages
when this SUN2000 is
running. Only qualified
and trained electrical
technicians are allowed
to perform operations
on the SUN2000.
There are residual
voltages in the
SUN2000. It needs 5
minutes to finish
discharge.
Burn warning
The SUN2000 must not be
touched when in operation
because its enclosure and
heat sinks are extremely
hot.

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Symbol
Label
Meaning
Refer to documentation
Remind operators to refer
to the documentation
shipped with the SUN2000.
Grounding
Indicates the position for
connecting the protection
ground cable.
Operation warning
The DC input connector
must not be removed when
the SUN2000 is in
operation.
Warranty label
Never open the host panel
of the SUN2000.
SUN2000 serial number
label
Indicates the SUN2000
serial number.
Nameplate
The SUN2000 is labeled with a nameplate that contains the model information, technical
specifications, and compliance symbols. If the SUN2000 only uses RS485 for communication,
the value of Communication on the nameplate is RS485, as shown in Figure 2-9. If the
SUN2000 uses PLC and RS485 for communication, the value of Communication on the
nameplate is PLC, as shown in Figure 2-10. (SUN2000-33KTL is used as an example.)

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Figure 2-9 Nameplate (RS485 communication)
(1) Trademark, product name, and model
number
(2) Important technical specifications
(3) Compliance symbols
(4) Company name and country of
manufacture

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Figure 2-10 Nameplate (PLC communication)
(1) Trademark, product name, and model
number
(2) Important technical specifications
(3) Compliance symbols
(4) Company name and country of
manufacture
Table 2-4 describes the compliance symbols.
Table 2-4 Compliance symbols
Symbol
Name
Meaning
CQC certification mark
The SUN2000 has been
awarded the NB/T 32004
certification by China
Quality Certification
Center (CQC).
RCM certification mark
The SUN2000 complies
with RCM certification
standards.
TÜVRheinland
certification mark
The SUN2000 complies
with TÜVRheinland
certification standards.

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Symbol
Name
Meaning
CE certification mark
The SUN2000 complies
with Conformité
Européenne (CE)
certification standards.
Environmentally friendly
use period (EFUP)
The SUN2000 is
environmentally friendly
for at least 50 years.
EU WEEE mark
The SUN2000 must not
be disposed of as
domestic waste. For
details about how to
dispose of the SUN2000,
see 9 Handling the
Inverter.
2.4 Working Process
Circuit Diagrams
The SUN2000 receives inputs from six PV strings. Then the inputs are grouped into three
MPPT routes inside the SUN2000 to track the maximum power point of the PV strings. The
DC power is then converted into three-phase AC power through a converter circuit. Surge
protection is supported on both the DC and AC sides. Figure 2-11 shows the circuit diagram
for the SUN2000-33KTL. Figure 2-12 shows the circuit diagram for the SUN2000-30KTL-A
and SUN2000-40KTL.
Figure 2-11 Circuit diagram for the SUN2000-33KTL