Huawei SUN2000 Series User manual

31186168
SUN2000 (8KTL-28KTL)
User Manual
Issue
07
Date
2014-07-30
HUAWEI TECHNOLOGIES CO., LTD.

Issue 07 (2014-07-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
i
Copyright © Huawei Technologies Co., Ltd. 2014. 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 (8KTL-28KTL)
User Manual
About This Document
Issue 07 (2014-07-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
ii
About This Document
Purpose
This document describes the SUN2000 in terms of its installation, electrical connections,
commissioning, maintenance, and troubleshooting. Get familiar with this document before
installing and operating the SUN2000.
This document is under continuous updates and correcting. You can download the latest
version from http://support.huawei.com/carrier/.
Intended Audience
This document is intended for photovoltaic (PV) plant operators and qualified electrical
technical personnel.
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.
Calls attention to important information, best practices and
tips.
NOTE is used to address information not related to personal

SUN2000 (8KTL-28KTL)
User Manual
About This Document
Issue 07 (2014-07-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
iii
Symbol
Description
injury, equipment damage, and environment deterioration.
Change History
Changes between document issues are cumulative. The latest document issue contains all the
changes made in earlier issues.
Issue 07 (2014-07-30)
Added 4.5 Support-mounting the SUN2000.
Supplemented AC power cable specifications and models.
Modified the start time of the warranty period.
Issue 06 (2014-06-05)
Added more precautions for Installation and Maintenance and Replacement in 1 Safety
Precautions.
Added 3 Inverter Storage.
Added more maintenance items in 8.2 Daily Maintenance.
Added B Power Grid Standard Codes.
Issue 05 (2014-03-25)
Added cable types and precautions for cable connections in 5.3 Installing DC Input Power
Cables.
Modified the output power of the inverter at different temperatures in General Data in 10
Technical Specifications.
Issue 04 (2013-12-15)
Added descriptions about the SUN2000-23KTL.
Issue 03 (2013-10-11)
Added descriptions about the SUN2000-28KTL.
Issue 02 (2013-06-08)
This issue is the second official release.
Issue 01 (2013-04-26)
This issue is the first official release.

SUN2000 (8KTL-28KTL)
User Manual
Contents
Issue 07 (2014-07-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
iv
Contents
About This Document.................................................................................................................... ii
1 Safety Precautions.........................................................................................................................1
2 Overview.........................................................................................................................................3
2.1 Introduction ..................................................................................................................................................................3
2.2 Appearance ...................................................................................................................................................................5
2.3 Symbol Conventions.....................................................................................................................................................8
2.4 Monitoring Panel ........................................................................................................................................................ 11
2.5 Working Principles......................................................................................................................................................14
3 Inverter Storage ...........................................................................................................................19
4 Installation....................................................................................................................................20
4.1 Checking Before Installation ......................................................................................................................................20
4.2 Tools ...........................................................................................................................................................................22
4.3 Determining the Installation Position .........................................................................................................................24
4.4 Moving the SUN2000.................................................................................................................................................27
4.5 Support-mounting the SUN2000 ................................................................................................................................28
4.6 Wall-mounting the SUN2000......................................................................................................................................33
5 Electrical Connections................................................................................................................42
5.1 Installing PGND Cables..............................................................................................................................................42
5.2 Connecting AC Output Power Cables.........................................................................................................................45
5.3 Installing DC Input Power Cables ..............................................................................................................................51
5.4 Connecting Communications Cables..........................................................................................................................57
5.4.1 Communications Port Description...........................................................................................................................57
5.4.2 Connecting RS485 Communications Cables ...........................................................................................................59
6 System Operation........................................................................................................................64
6.1 Checking Before Power-On........................................................................................................................................64
6.2 Powering on the SUN2000 .........................................................................................................................................64
6.3 Setting Initialization Parameters.................................................................................................................................65
7 LCD................................................................................................................................................68
7.1 Monitoring Menu Hierarchy.......................................................................................................................................68
7.2 Monitoring Operations................................................................................................................................................71

SUN2000 (8KTL-28KTL)
User Manual
Contents
Issue 07 (2014-07-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
v
7.2.1 Viewing System Operating Information ..................................................................................................................71
7.2.2 Viewing Alarm Records...........................................................................................................................................77
7.2.3 Setting System Time Parameters .............................................................................................................................79
7.2.4 Setting the System Language...................................................................................................................................81
7.2.5 Setting the Contrast..................................................................................................................................................83
7.2.6 Setting the Currency and Currency Factor...............................................................................................................85
7.2.7 Changing a Password...............................................................................................................................................87
7.2.8 Setting Communications Parameters .......................................................................................................................89
7.2.9 Setting Protection Parameters..................................................................................................................................91
7.2.10 Setting Feature Parameters ....................................................................................................................................93
7.2.11 Setting Isolation Parameters...................................................................................................................................95
7.2.12 Enabling Manual Power-On and Power-Off..........................................................................................................96
7.2.13 Restoring Factory Settings.....................................................................................................................................99
7.2.14 Cleaning the User Data........................................................................................................................................101
7.2.15 Enabling the USB Guide Function ......................................................................................................................102
7.2.16 Viewing the System Version ................................................................................................................................105
8 Maintenance...............................................................................................................................107
8.1 Powering Off the SUN2000......................................................................................................................................107
8.2 Daily Maintenance....................................................................................................................................................108
8.3 Common Faults and Troubleshooting Measures.......................................................................................................108
9 Inverter-Associated Operations .............................................................................................116
9.1 Removing the SUN2000........................................................................................................................................... 116
9.2 Packing the SUN2000...............................................................................................................................................116
9.3 Disposing the SUN2000 ........................................................................................................................................... 116
10 Technical Specifications ........................................................................................................117
11 Quality Assurance...................................................................................................................121
A Abbreviation .............................................................................................................................122
B Power Grid Standard Codes...................................................................................................123

SUN2000 (8KTL-28KTL)
User Manual
1 Safety Precautions
Issue 07 (2014-07-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
1
1 Safety Precautions
Read the safety precautions carefully to ensure human safety.
Personnel Requirements
Only qualified and trained electrical technicians are allowed to operate the SUN2000.
Operation personnel should understand the composition and working principles of the
PV grid-tied power system and local regulations.
Identification Protection
The signs on the SUN2000 shell specify important information about secure operation.
Do not damage the signs.
The nameplate attached to the SUN2000 side panel lists the SUN2000 parameter
information. Do not damage the nameplate.
Installation
Before installation, read this document carefully. Huawei shall not be liable for any
consequence caused by violation of the regulations specified in this document.
Before installing the SUN2000, ensure that the SUN2000 is not connected or electrified.
To ensure good heat dissipation and reserve enough space for installing the SUN2000,
the SUN2000 is at least 200 mm, 500 mm, 300 mm, and 1000 mm away from objects on
its both sides, top, bottom, and front respectively.
Install the SUN2000 in environments with good ventilation to ensure system
performance.
Ensure that the SUN2000 heat sinks are unblocked.
Do not move the components inside the shelf except the wiring terminals at the bottom.
Electrical Connection

SUN2000 (8KTL-28KTL)
User Manual
1 Safety Precautions
Issue 07 (2014-07-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
2
Before connecting cables to the SUN2000, ensure that the SUN2000 is intact and secure.
Otherwise, electrical shocks or fire may be triggered.
Before connecting cables to the SUN2000, shield the PV modules by using opaque cloth.
All electrical connections must comply with local laws and regulations.
Before using the SUN2000 to generate electricity in grid-tied mode, obtain approval
from the local power supply department.
Ensure that the cables to the solar power system are properly connected and insulted
(That is, the insulation resistance between the ground and the main loop formed by PV
module strings, the SUN2000, and protective devices is less than 1 Mohm.) and meet
specifications.
Operation
High voltages may cause electrical shocks and death during SUN2000 operation. Strictly
comply with the safety precautions in this document and associated documents when
operating the SUN2000.
Do not disconnect the DC power supply during the SUN2000 operation.
Do not touch a running SUN2000 except for the liquid crystal display (LCD) and DC
switch because the shelf and heat sinks become hot during the SUN2000 operation.
Only professionals are allowed to set initialization parameters during the first power-on
of the SUN2000. Incorrect settings may affect the SUN2000 operation and cause the
SUN2000 to conflict with local certification.
Keep an over 20 cm distance away from the SUN2000 because radiation is generated
during the SUN2000 operation.
When operating the SUN2000, follow local laws and regulations.
Maintenance and Replacement
Before any maintenance, power off the SUN2000 based on the power-off guidelines and
then wait for at least 5 minutes.
Stand temporary warning signs or fences to prevent unauthorized personnel to enter the
maintenance site.
Rectify the faults that compromise the SUN2000 security performance before restarting
the SUN2000.
A faulty SUN2000 requires overall maintenance. Contact the dealer if any fault occurs
inside the SUN2000.
Maintain the SUN2000 after you get familiar with this document and tools and testing
equipment are prepared.
When maintaining the SUN2000, wear ESD gloves and comply with ESD precautions.

SUN2000 (8KTL-28KTL)
User Manual
2 Overview
Issue 07 (2014-07-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
3
2 Overview
This topic describes the SUN2000 in terms of its functions, network application, appearance,
and working principles.
2.1 Introduction
Introduction of the function, model and application of the SUN2000.
Function
The SUN2000 is a grid-tied PV inverter. It converts the high-voltage DC power generated by
PV arrays into sine wave three-phase AC power with the same frequency and phase as the
power grid.
Model
Figure 2-1 shows the model composition of the SUN2000, taking SUN2000-17KTL as an
example.
Figure 2-1 Model 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
SUN2000-8KTL
8 kW
SUN2000-10KTL
10 kW

SUN2000 (8KTL-28KTL)
User Manual
2 Overview
Issue 07 (2014-07-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
4
Model
Rated Output Power
SUN2000-12KTL
12 kW
SUN2000-15KTL
15 kW
SUN2000-17KTL
17 kW
SUN2000-20KTL
20 kW
SUN2000-23KTL
23 kW
SUN2000-28KTL
27.5 kW
Application
The SUN2000 applies to commercial rooftop grid-tied systems and large power station
grid-tied systems. Typically, the grid-tied system consists of PV modules, grid-tied inverters,
and AC distribution modules (ACDUs), as shown in Figure 2-2.
Figure 2-2 SUN2000 application
A. PV array
B. SUN2000
C. ACDU
D. Power grid
Power Grid Modes for the SUN2000
The SUN2000-8KTL to SUN2000-23KTL support the following power grid modes: TN-S,
TN-C, TN-C-S, and TT, as shown in Figure 2-3. The SUN2000-28KTL supports the IT mode,
as shown in Figure 2-4.

SUN2000 (8KTL-28KTL)
User Manual
2 Overview
Issue 07 (2014-07-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
5
For TT grid mode, the valid value of the neutral-ground voltage should be less than 20 V.
The SUN2000-28KTL applies to the medium-voltage grids and has three-phase, three-wire
outputs.
Figure 2-3 Powergrid modes supported by theSUN2000-8KTLto SUN2000-23KTL
Figure 2-4 Powergrid modes supported by theSUN2000-28KTL
2.2 Appearance
This topic describes the SUN2000 in terms of its appearance and specifications.

SUN2000 (8KTL-28KTL)
User Manual
2 Overview
Issue 07 (2014-07-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
6
Front view
1. Shell
2. Control panel
The LCD displays the SUN2000 operating data, such as input power, output power, and electricity
output. The indicators show the SUN2000 operating status and its faults.

SUN2000 (8KTL-28KTL)
User Manual
2 Overview
Issue 07 (2014-07-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
7
Side view
Rear view
1. Heat sink
2. Install mounting rackets

SUN2000 (8KTL-28KTL)
User Manual
2 Overview
Issue 07 (2014-07-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
8
Bottom view
1. DC
switch
2. Ventilation
valves
3. DC input port (positive)
Note: The objects in blue are dustproof plugs. Remove
them before connecting DC input power cables.
4. USB port
5. RS485 IN
port
6. RS485 OUT port
7. AC
output port
8. Ground bolt
9. DC input port (negative)
Note: The objects in blue are dustproof plugs. Remove
them before connecting DC input power cables.
2.3 Symbol Conventions
Introduction of the symbols and nameplates of the SUN2000.
Symbol
Table 2-2 describes all symbols on the SUN2000.
Table 2-2 Symbols
Symbol
Name
Meaning
Danger high voltage label
The SUN2000 operates at
high voltages. All operation
on the SUN2000 may only
be carried out by a trained
electrically skilled person.

SUN2000 (8KTL-28KTL)
User Manual
2 Overview
Issue 07 (2014-07-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
9
Symbol
Name
Meaning
Delay discharge label
There is residual voltage in
the SUN2000. The
SUN2000 needs 5 minutes
to electrically discharge.
High temperature label
Do not touch a running
SUN2000 because it
generates high temperatures
on the shell.
Refer to the instructions
label
Remind operators to refer to
the documents shipped with
the SUN2000.
Grounding label
Connect the SUN2000 to a
ground bar for grounding
purposes.
Operation warning label
Do not remove the DC
input connector when the
SUN2000 is running.
CE certification label
This product complies with
the Conformite Europeenne
(CE) certification standards.
CGC-Solar certification
label
This document complies
with CGC-Solar
certification standards.
EU waste electrical and
electronic equipment
(WEEE) label
Do not dispose the
SUN2000 as household
garbage. For details about
how to dispose the
SUN2000, see 9
Inverter-Associated
Operations.
Identifying Nameplates
Each SUN2000 is labeled with a nameplate on which you can view the model, technical
specifications, and certification label, as shown in Figure 2-5.

SUN2000 (8KTL-28KTL)
User Manual
2 Overview
Issue 07 (2014-07-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
10
Figure 2-5 Nameplates
1. Trademark and product model of the
SUN2000
2. Technical specifications of the
SUN2000
3. Labels of certifications that the SUN2000
complies with
4. Company name and the
manufacturing place
Table 2-3 describes certification labels.
Table 2-3 Certification labels
Label
Label Name
Meaning
CGC-Solar certification
label
This document complies
with CGC-Solar
certification standards.
Note: The
SUN2000-8KTL,
SUN2000-10KTL, and
SUN2000-12KTL have no
this label.
Conformite Europeenne
(CE) certification label
This product complies with
the CE certification
standards.
Environmentally friendly
use period (EFUP) label
This product does not
pollute the environment
during a specified period.
EU waste electrical and
electronic equipment
(WEEE) label
Do not dispose the
SUN2000 as household
garbage.

SUN2000 (8KTL-28KTL)
User Manual
2 Overview
Issue 07 (2014-07-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
11
2.4 Monitoring Panel
This topic describes the appearance of the monitoring panel, including an LCD, indicators,
and buttons.
Monitoring panel
The monitoring panel provides one LCD, four indicators, and four buttons, as shown in Figure
2-6.
Figure 2-6 Monitoring panel
1. LCD
2. Indicators
3. Buttons
LCD
The LCD displays the SUN2000 data in graphics and characters, including the operating
information, alarm information, system parameters, and user parameters.
If you do not press any button within 90s, the liquid crystal display (LCD) returns to the
default page automatically, as shown in Figure 2-7.

SUN2000 (8KTL-28KTL)
User Manual
2 Overview
Issue 07 (2014-07-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
12
Figure 2-7 Default page
(1) Energy
yield
histogram
Allows you to view the energy yield data within 24 hours.
(2) Energy
yield data
Allows you to view the date and time.
Allows you to view the general energy yield data from 0:00 to the
current time.
Allows you to view the total energy yield data from the startup time to
the current time.
(3) Power
flow diagram
Allows you to view the number of PV string inputs.
The six boxes under the PV module stand for the number of PV string
inputs. where
−The box filled with a cross indicates that the corresponding PV
string is not connected or its power is low.
−The box filled with white or black indicates that the corresponding
PV string works properly.
Allows you to view the power flow from the PV strings to the
SUN2000 and view the voltage and current of each input.
Allows you to view the power flow from the SUN2000 to the power
grid and view the voltage and current of each output.
−For the SUN2000-8KTL to SUN2000-23KTL, displays the effective
values of the phase voltage and phase current of the SUN2000
three-phase output.
−For the SUN2000-24.5KTL, and SUN2000-28KTL, displays the
effective values of the line voltage and line current.
NOTE
The system displays the voltage and current of the route corresponding to the box
filled with black and switches between the connected PV strings every 10 seconds.
You can also perform manual switching by clicking and .
(4)
Output/Peak
power
Allows you to view the output power and peak power of the SUN2000.
Figure 2-8 shows the displayed page when the sunlight does not meet the conditions for
the startup of the SUN2000.

SUN2000 (8KTL-28KTL)
User Manual
2 Overview
Issue 07 (2014-07-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
13
Figure 2-8 Idle: Irradiation Detecting
Figure 2-9 shows the displayed page when the SUN2000 detects a fault or a shutdown
command.
Figure 2-9 Shutdown: Fault
Indicators
The SUN2000 monitoring panel provides four indicators, which are described in Table 2-4.
Table 2-4 Indicator description
Indicator
State
Meaning
PV connection indicator
Steady green
The SUN2000 connects to at
least one of the PV arrays
properly.
Off
The SUN2000 disconnects from
all PV arrays.
Feed in grid indicator
Steady green
The SUN2000 connects to the
power grid properly.
Off
The SUN2000 disconnects from
the power grid.
Wireless connection
indicator
Reserved
Reserved.

SUN2000 (8KTL-28KTL)
User Manual
2 Overview
Issue 07 (2014-07-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
14
Indicator
State
Meaning
Alarm indicator
Steady red
The SUN2000 generates a major
alarm. For details about the
alarm, see 7.2.2 Viewing Alarm
Records.
Blinking red at short
intervals (on for 0.5s and
then off for 0.5s)
The SUN2000 generates a minor
alarm. For details about the
alarm, see 7.2.2 Viewing Alarm
Records.
Blinking red at long
intervals (on for 1s and
then off for 4s)
The inverter generates a
warning. For details about the
warning, see 7.2.2 Viewing
Alarm Records.
Buttons
The SUN2000 monitoring panel has four buttons, which are described in Table 2-5.
Table 2-5 Button description
Button
Name
Function
ESC
Return
button
Allows you to return to the last page or end an
operation.
Cursor Up
button
Allows you to go to the upper-level menu or set
parameters.
Cursor
Down
button
Allows you to go to the lower-level menu or set
parameters.
Confirm
button
Allows you to go to the menu or confirm the value.
The backlight lasts 60s after you press any button.
2.5 Working Principles
This topic describes the SUN2000 working principles.
Conceptual Diagrams
The SUN2000-15KTL, SUN2000-17KTL, SUN2000-20KTL, SUN2000-23KTL,
SUN2000-24.5KTL, and SUN2000-28KTL receive inputs from six PV strings. Then the