Table of Contents
- About This Document
- Contents
- 1 Safety Precautions
- 2 Overview
- 3 Storage
- 4 Installation
- 5 Electrical Connections
- 6 Commissioning
- 7 Man-Machine Interactions
- 8 Maintenance
- 9 Handling the Inverter
- 10 Technical Specifications
- A Acronyms and Abbreviations
Huawei SUN2000-50KTL-M0 User Manual
Displayed below is the user manual for SUN2000-50KTL-M0 by Huawei which is a product in the Power Adapters & Inverters category. This manual has pages.
Related Manuals
SUN2000-(50KTL,60KTL,65KTL)-M0
User Manual (Southeast Asia,
Middle East, Africa, Latin
America, and Australia Edition)
Issue
Draft A
Date
2018-01-10
HUAWEI TECHNOLOGIES CO., LTD.
Issue Draft A (2018-01-10)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
i
Copyright © Huawei Technologies Co., Ltd. 2018. 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:
support@huawei.com
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About This Document
Purpose
This document describes the SUN2000-50KTL-M0, SUN2000-60KTL-M0 and
SUN2000-65KTL-M0 (SUN2000 for short) in terms of its installation, electrical connections,
commissioning, maintenance, and troubleshooting. Before installing and operating the
SUN2000, ensure that you are familiar with the features, functions, and safety precautions
provided in this document.
Intended Audience
This document is intended for photovoltaic (PV) plant personnel and 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.
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.
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Change History
Changes between document issues are cumulative. The latest document issue contains all
updates made in previous issues.
Issue Draft A (2018-01-10)
This issue is used for first office application (FOA).
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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 Description .......................................................................................................................................................... 9
2.3.1 Enclosure Labels ........................................................................................................................................................ 9
2.3.2 Product Nameplate ................................................................................................................................................... 10
2.4 Working Principles...................................................................................................................................................... 11
2.4.1 Conceptual Diagram ................................................................................................................................................ 11
2.4.2 Working Modes ........................................................................................................................................................ 13
3 Storage ........................................................................................................................................... 15
4 Installation.................................................................................................................................... 16
4.1 Checking Before Installation ...................................................................................................................................... 16
4.2 Tools ........................................................................................................................................................................... 17
4.3 Determining the Installation Position ......................................................................................................................... 18
4.3.1 Environment Requirements ..................................................................................................................................... 18
4.3.2 Space Requirements ................................................................................................................................................. 19
4.4 Installing the Mounting Bracket ................................................................................................................................. 22
4.4.1 Support-mounted Installation .................................................................................................................................. 23
4.4.2 Wall-mounted Installation ........................................................................................................................................ 25
4.5 Installing the SUN2000 .............................................................................................................................................. 27
5 Electrical Connections ................................................................................................................ 32
5.1 Precautions .................................................................................................................................................................. 32
5.2 Crimping the OT Terminal .......................................................................................................................................... 32
5.3 Opening the Maintenance Compartment Door ........................................................................................................... 34
5.4 Installing the AC Output Power Cable ........................................................................................................................ 37
5.5 Connecting DC input power cables ............................................................................................................................ 45
5.6 Installing the Communications Cable ......................................................................................................................... 49
5.6.1 Communication Mode Description .......................................................................................................................... 49
5.6.2 Installing the RS485 Communications Cable .......................................................................................................... 51
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5.6.2.1 Terminal Block Connection .................................................................................................................................. 51
5.6.2.2 Connecting Cables to the RJ45 Network Port ...................................................................................................... 54
5.6.3 (Optional) Installing the Solar Tracker Power Cable ............................................................................................... 57
5.7 Closing the Maintenance Compartment Door ............................................................................................................ 60
6 Commissioning............................................................................................................................ 62
6.1 Checking Before Power-On ........................................................................................................................................ 62
6.2 Powering On the SUN2000 ........................................................................................................................................ 62
6.3 Powering Off the System ............................................................................................................................................ 68
7 Man-Machine Interactions ........................................................................................................ 70
7.1 Operations with a USB Flash Drive............................................................................................................................ 70
7.1.1 Exporting Configurations ........................................................................................................................................ 70
7.1.2 Importing Configurations ........................................................................................................................................ 72
7.1.3 Exporting Data ......................................................................................................................................................... 73
7.1.4 Upgrading ................................................................................................................................................................ 74
7.2 Operations with the SUN2000 App ............................................................................................................................ 76
8 Maintenance ................................................................................................................................. 77
8.1 Routine Maintenance .................................................................................................................................................. 77
8.2 Troubleshooting .......................................................................................................................................................... 78
9 Handling the Inverter ................................................................................................................. 84
9.1 Removing the SUN2000 ............................................................................................................................................. 84
9.2 Packing the SUN2000 ................................................................................................................................................. 84
9.3 Disposing of the SUN2000 ......................................................................................................................................... 84
10 Technical Specifications .......................................................................................................... 85
A Acronyms and Abbreviations .................................................................................................. 89
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1 Safety Precautions
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1 Safety Precautions
General Safety
Before performing operations, read through this manual and follow all the precautions to
prevent accidents. The "DANGER", "WARNING", "CAUTION", and "NOTICE" marks
in this document do not represent all the safety instructions. They are only supplements to
the safety instructions.
Only certified electricians are allowed to install, connect cables for, commission, maintain,
and troubleshoot Huawei products, and they must understand basic safety precautions to
avoid hazards.
When operating Huawei equipment, in addition to following the general precautions in this
document, follow the specific safety instructions given by Huawei. The safety precautions
provided in this document do not cover all the safety precautions. Huawei shall not be liable
for any consequence caused by the violation of the safety operation regulations and design,
production, and usage standards.
Disclaimer
Huawei shall not be liable for any consequence caused by any of the following events:
Transportation damage
Violation of the storage requirements specified in this document
Incorrect storage, installation, or use
Installation or use by unqualified personnel
Failure to obey the operation instructions and safety precautions in this document
Operation in extreme environments which are not covered in this document
Operation beyond specified ranges
Unauthorized modifications to the product or software code or removal of the product
Device damage due to force majeure (such as lightning, earthquake, fire, and storm)
The warranty expires and the warranty service is not extended.
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Installation or use in environments which are not specified in related international
standards
Personnel Requirements
Only certified electricians are allowed to install, connect cables for, commission, maintain,
troubleshoot, and replace the SUN2000. Operation personnel must meet the following
requirements:
Receive professional training.
Read through this document and follow all the precautions.
Be familiar with the safety specifications about the electrical system.
Understand the components and functioning of a grid-tied PV system, and be familiar
with relevant local standards.
Wear proper personal protective equipment (PPE) during any operation on the SUN2000.
Protect Labels
Do not scrawl, damage, or block the labels on the SUN2000 enclosure.
Do not scrawl, damage, or block the nameplate on the side of the SUN2000 enclosure.
Do not remove the warranty label from the SUN2000 enclosure.
Installation
Never work under power during installation.
Ensure that the SUN2000 is not connected to a power supply or powered on before
finishing installation.
Ensure that the SUN2000 is installed in a well-ventilated environment.
Ensure that the SUN2000 heat sinks are free from blockage.
Never open the host panel cover of the SUN2000.
Never remove the terminals and cable glands at the bottom of the SUN2000.
Electrical Connections
Before connecting cables to the SUN2000, ensure that the SUN2000 is secured in position
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 utility company before using the SUN2000 to generate
electricity in grid-tied mode.
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Ensure that the cables used in a grid-tied PV system are properly connected and insulated
and meet all specification requirements.
Operation
High voltage may cause an electric shock, which results in serious injury, death or serious
property damage from the SUN2000 in operation. Strictly comply with the safety precautions
in this document and associated documents to operate the SUN2000.
Do not touch an energized SUN2000 because the heat sink has a high temperature.
Follow local laws and regulations when operating the SUN2000.
Maintenance and Replacement
High voltage may cause an electric shock, which results in serious injury, death or serious
property damage from the SUN2000 in operation. Prior to maintenance, power off the
SUN2000 and strictly comply with the safety precautions in this document and associated
documents to operate the SUN2000.
Maintain the SUN2000 with sufficient knowledge of this document, proper tools, and
testing equipment.
Before performing maintenance tasks, power off the SUN2000 and wait at least 15
minutes.
Temporary warning labels or fences must be placed to prevent unauthorized people
entering the site.
Rectify any faults that may compromise the SUN2000 security performance before
powering on the SUN2000 again.
Observe ESD precautions during maintenance.
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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 into AC power and feeds the power to the power grid.
Models
Figure 2-1 Designation explanation of the SUN2000-60KTL-M0
Model
Rated Output Power
Rated Output Voltage
SUN2000-50KTL-M0
50 kW
400 V
SUN2000-60KTL-M0
60 kW
400 V/480 V
SUN2000-65KTL-M0
65 kW
480 V
Networking Application
The SUN2000 applies to grid-tied PV systems for commercial rooftops and large PV plants.
Typically, a grid-tied PV system consists of the PV string, SUN2000, alternating current
distribution unit (ACDU), and isolation transformer.
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Figure 2-2 Network diagram
(A) PV string
(B) SUN2000
(C) ACDU
(D) Isolation transformer
(E) Power grid
Supported Power Grid
The SUN2000-50KTL-M0 and SUN2000-60KTL-M0 support the following power grid
modes: TN-S, TN-C, TN-C-S, TT, and IT. The SUN2000-65KTL-M0 supports only IT grid
mode.
Figure 2-3 Power grid modes
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2.2 Appearance
Dimensions
Front View
(1) Maintenance compartment door
(2) LED
(3) Host panel cover
LED
Status
Meaning
PV connection LED
PV string
connectio
n status
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 SUN2000 disconnects
from all PV strings, or the DC
input voltage of each MPPT
circuit is less than 200 V.
Grid-tied LED
Steady green
The SUN2000 is exporting
power to the power grid.
Off
The SUN2000 is not exporting
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LED
Status
Meaning
power to the power grid.
Communication LED
Blinking green
The SUN2000 receives data
over RS485 or PLC
communication.
Off
The SUN2000 has not
received data over RS485 or
PLC communication for 10
seconds.
Alarm/Maintenance
LED
Alarm
status
Blinking red at
long intervals (on
for 1s and then
off for 4s)
The SUN2000 is generating a
warning alarm.
Blinking red at
short intervals (on
for 0.5s and then
off for 0.5s)
The SUN2000 is generating a
minor alarm.
Steady red
The SUN2000 is generating a
major alarm.
Local
maintenan
ce status
Blinking green at
long intervals (on
for 1s and then
off for 1s)
Local maintenance is in
progress.
Blinking green at
short intervals (on
for 0.125s and
then off for
0.125s)
Local maintenance fails.
Steady green
Local maintenance is
successful.
Local maintenance refers to operations performed after a 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 maintenance operations on the
SUN2000 app installed on a device connected to the SUN2000 by a Bluetooth module or USB data
cable.
If an alarm occurs during local maintenance, the Alarm/Maintenance LED shows the local
maintenance status first. After the USB flash drive, Bluetooth module, or USB data cable is removed,
the LED shows the alarm status.
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Bottom View
No
.
Component
Silk Screen
Description
1
Cable gland
COM1, COM2, and
COM3
Inner diameter: 14–18 mm
2
DC switch 1
DC SWITCH 1
N/A
3
DC input terminals
+/–
Controlled by DC SWITCH
1
4
DC input terminals
+/–
Controlled by DC SWITCH
2
5
DC switch 2
DC SWITCH 2
N/A
6
Cable gland
AC OUTPUT
Inner diameter: 24–57 mm
7
Cable gland
RESERVE
Inner diameter: 14–18 mm
8
USB port
USB
N/A
Holes Reserved at the Side of the Enclosure
There are two M6 tapped holes reserved on both sides of the enclosures, which are used for installing an
awning.
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2.3 Label Description
2.3.1 Enclosure Labels
Label
Name
Meaning
Running warning
Potential hazards exist
after the SUN2000 is
powered on. Take
protective measures when
operating the SUN2000.
Burn warning
Do not touch a running
SUN2000 because it
generates high
temperatures on the shell.
Delay discharge
High voltage exists
after the SUN2000 is
powered on. Only
certified electricians
are allowed to perform
operations on the
SUN2000.
Residual voltage exists
after the SUN2000 is
powered off. It takes
15 minutes for the
SUN2000 to discharge
to the safe voltage.
Refer to documentation
Reminds operators to
refer to the documents
provided with the
SUN2000.
Grounding
Indicates the position for
connecting the PE cable.
Operation warning
Do not remove the DC
input connector when the
SUN2000 is running.
DC terminal operation
warning
High voltage exists after
the SUN2000 is powered
on. To avoid electric
shocks, perform the
following system
power-off operations
before plugging or
unplugging DC input
connectors of the
SUN2000:
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Label
Name
Meaning
1. Send a shutdown
command.
2. Turn off the
downstream AC
switch.
3. Turn off the two DC
switches at the bottom.
SUN2000 serial number
(SN) label
Indicates the SUN2000
SN.
Weight label
The SUN2000 needs to be
carried by four people or
using a pallet truck.
2.3.2 Product Nameplate
Figure 2-4 Nameplate of the SUN2000-60KTL-M0
(1) Trademark, product name, and model
number
(2) Important technical specifications
(3) Compliance symbols
(4) Company name and place of
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production
The nameplate figure is for reference only.
Label
Name
Meaning
China Environmentally
friendly use period
(EFUP)
This product is
environmentally friendly
for at least 50 years.
European Union (EU)
waste electrical and
electronic equipment
(WEEE)
This product must not be
disposed of as domestic
waste.
2.4 Working Principles
2.4.1 Conceptual Diagram
The SUN2000 receives inputs from 12 PV strings. Then the inputs are grouped into six 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 an inverter circuit. Surge
protection is supported on both the DC and AC sides.
Figure 2-5 shows the conceptual diagram for the SUN2000-50KTL/60KTL-M0. Figure 2-6
shows the conceptual diagram for the SUN2000-65KTL-M0.
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Figure 2-5 SUN2000-50KTL/60KTL-M0 conceptual diagram
Figure 2-6 SUN2000-65KTL-M0 conceptual diagram
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2.4.2 Working Modes
The SUN2000 can work in Standby, Operating, or Shutdown mode.
Figure 2-7 SUN2000 working modes
Table 2-1 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.
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Working
Mode
Description
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 Storage
The following requirements should be met when the SUN2000 needs to be stored prior to
installation:
Do not unpack the SUN2000.
Keep the proper storage temperature and humidity.
The SUN2000 should be stored in a clean and dry place and be protected from dust and
water vapor corrosion.
The number of stacked SUN2000s should meet requirements.
Regular inspection is required during the storage. Replace the packing materials when
necessary.
After long-term storage, an inspection and test conducted by qualified persons are
necessary before the SUN2000 is put into use.
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4 Installation
4.1 Checking Before Installation
Outer Packing Materials
Before unpacking the inverter, check the outer packing materials for damage, such as holes
and cracks, and check the inverter model. If any damage is found or the inverter model is not
what you requested, do not unpack the package and contact your supplier as soon as possible.
Figure 4-1 Position of the inverter model label
(1) Position of the model label
You are advised to remove the packing materials within 24 hours before installing the inverter.
Package Contents
After unpacking the inverter, check that the contents are intact and complete. If any damage is
found or any component is missing, contact your supplier.
For details about the number of contents, see the Packing List in the packing case.
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4.2 Tools
Type
Tool
Install
ation
tool
Hammer drill
Drill bit: Φ14 mm and
Φ16 mm
Socket wrench
Torque wrench
Torque screwdriver
(Phillips head: M4; flat
head: M4)
Diagonal pliers
Wire stripper
Flat-head screwdriver
Head: 0.6 mm x 3.5
mm
Rubber mallet
Utility knife
Cable cutter
Crimping tool
Model: H4TC0001;
manufacturer:
AMPHENOL
RJ45 crimping tool
Removal wrench
Model: H4TW0001;
manufacturer:
AMPHENOL
Vacuum cleaner
Multimeter
DC voltage
measurement range ≥
1100 V DC
Marker
Measuring tape
Digital or bubble level
Hydraulic pliers
Heat shrink tubing
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Type
Tool
Heat gun
Cable tie
-
-
PPE
Safety gloves
Safety goggles
Anti-dust respirator
Safety shoes
4.3 Determining the Installation Position
4.3.1 Environment Requirements
Basic Requirements
The SUN2000 can be installed indoors or outdoors.
Do not install the SUN2000 in a place where personnel are easy to come into contact
with its enclosure and heat sinks, because these parts are extremely hot during operation.
Do not install the SUN2000 in areas with flammable or explosive materials.
The SUN2000 must be installed in a well-ventilated environment to ensure good heat
dissipation.
Recommended: Install the SUN2000 in a sheltered place or a place with an awning.
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Figure 4-2 Awning
Mounting Structure Requirements
The mounting structure where the SUN2000 is installed must be fireproof.
Do not install the SUN2000 on flammable building materials.
The SUN2000 is heavy. Ensure that the installation surface is solid enough to bear the
weight load.
In residential areas, do not install the SUN2000 on drywalls or walls made of similar
materials which have a weak sound insulation performance because the noise generated
by the SUN2000 is noticeable.
4.3.2 Space Requirements
Reserve enough clearance around the SUN2000 and determine an appropriate
installation tilt to ensure sufficient space for installation and heat dissipation.
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Figure 4-3 Installation space requirements
For ease of installing the SUN2000 on the mounting bracket, connecting cables to the bottom of the
SUN2000, and maintaining the SUN2000 in future, it is recommended that the bottom clearance be in
the range of 600 mm to 730 mm. If you have any questions about the clearances, consult the local
technical support engineers.
Figure 4-4 Installation tilts
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When installing multiple SUN2000s, install them in horizontal mode if sufficient space
is available and install them in triangle mode if no sufficient space is available. Stacked
installation is not recommended.
Figure 4-5 Horizontal installation mode (recommended)
Figure 4-6 Triangle installation mode (recommended)
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Figure 4-7 Stacked installation mode (not recommended)
4.4 Installing the Mounting Bracket
Installation Precautions
Figure 4-8 shows the SUN2000 mounting bracket dimensions.
Figure 4-8 Mounting bracket dimensions
The SUN2000 mounting bracket has four groups of tapped holes, each group containing four tapped
holes. Mark any hole in each group based on site requirements and mark four holes in total. Two round
holes are preferred.
Before installing the mounting bracket, remove the security torx wrench from the mounting
bracket and save it for later use.
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Figure 4-9 Removing a security torx wrench
4.4.1 Support-mounted Installation
Support-mounted Installation
Step 1 Determine the positions for drilling holes using the mounting bracket. Level the positions of
mounting holes using a bubble or digital level, and mark the positions with a marker.
Figure 4-10 Determining hole positions
Step 2 Drill holes using a hammer drill.
You are advised to apply anti-rust paint on the hole positions for protection.
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Figure 4-11 Drilling a hole
Step 3 Align the mounting bracket holes with the drilled holes, insert bolt assemblies (flat washers,
spring washers, and M12x40 bolts) into the holes through the mounting bracket, and secure
them using the supplied stainless steel nuts and flat washers.
M12x40 bolt assemblies are provided with the SUN2000. If the bolt length does not meet the installation
requirements, prepare M12 bolt assemblies by yourself and use them together with the provided M12
nuts.
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Figure 4-12 Securing a mounting bracket
----End
4.4.2 Wall-mounted Installation
Wall-mounted Installation
Step 1 Determine the positions for drilling holes using the mounting bracket. Level the positions of
mounting holes using a bubble or digital level, and mark the positions with a marker.
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Figure 4-13 Determining hole positions
Step 2 Drill holes using a hammer drill and install expansion bolts.
You need to prepare expansion bolts. M12x60 stainless steel expansion bolts are recommended.
Figure 4-14 Drilling a hole and installing an expansion bolt
Avoid drilling holes in the utility pipes and/or cables attached to back of the wall.
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To prevent dust inhalation or contact with eyes, wear safety goggles and an anti-dust
respirator when drilling holes.
Clean up any dust in and around the holes using a vacuum cleaner and measure the
distance between holes. If the holes are inaccurately positioned, drill a new set of holes.
Level the head of the expansion sleeve with the concrete wall after removing the bolt,
spring washer, and flat washer. Otherwise, the mounting bracket will not be securely
installed on the concrete wall.
Step 3 Align the mounting bracket holes with the drilled holes, insert expansion bolts into the holes
through the mounting bracket, and then tighten the expansion bolts.
Figure 4-15 Securing a mounting bracket
----End
4.5 Installing the SUN2000
Installation Precautions
Before installing the SUN2000, take it out from the packing case and move it to the
installation position.
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Figure 4-16 Taking out a SUN2000
To prevent device damage and personal injury, keep balance when moving the SUN2000
because it is heavy.
Move the SUN2000 with the help of other three persons or using an appropriate
transportation tool.
Do not use the ports and wiring terminals at the bottom to support any weight of the
SUN2000.
When you need to temporarily place the SUN2000 on the ground, use foam, paper, or
other protection material to prevent damage to its enclosure.
Procedure
Step 1 If you can mount the SUN2000 onto the mounting bracket directly, go to Step 3 and then Step
5.
Step 2 If you cannot mount the SUN2000 onto the mounting bracket directly, go to Step 3 and then
Step 6.
Step 3 Lift the SUN2000 and turn it upright.
To prevent device damage and personal injury, keep balance when raising the SUN2000
because it is heavy.
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Step 4 Run a lifting sling through the lifting eyes of the SUN2000.
When lifting the SUN2000, keep balance to prevent the SUN2000 impacting with a wall or
other objects.
Figure 4-17 Lifting a SUN2000
The figure is for reference only.
Step 5 Install the SUN2000 on the mounting bracket.
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Figure 4-18 Mounting the SUN2000 onto a mounting bracket
Step 6 Tighten the two antitheft screws using a security torx wrench.
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Figure 4-19 Tightening antitheft screws
----End
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5 Electrical Connections
5.1 Precautions
Before connecting cables, ensure that the two DC switches on the SUN2000 are OFF.
Otherwise, the high voltage of the SUN2000 may result in electric shocks.
The equipment damage caused by incorrect cable connections is beyond the warranty
scope.
Only certified electrician can perform electrical terminations.
Ware proper PPE at all time when terminating cables.
The cable colors shown in the electrical connection diagrams provided in this chapter are for reference
only. Select cables in accordance with local cable specifications (green-and-yellow cables are only used
for grounding).
5.2 Crimping the OT Terminal
Requirements for the OT Terminal
If a copper cable is used, use a copper wiring terminal.
If a copper-clad aluminum cable is used, use a copper wiring terminal.
If an aluminum alloy cable is used, use a copper to aluminum adapter terminal or an
aluminum wiring terminal with a copper to aluminum adapter washer.
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Directly connecting an aluminum wiring terminal to the AC terminal block will cause
electro-chemical corrosion and weaken the cable connection reliability.
The copper to aluminum adapter terminal or an aluminum wiring terminal with a copper to
aluminum adapter washer must comply with IEC61238-1.
Do not mix up the aluminum and copper sides of the copper to aluminum adapter washer.
Ensure that the aluminum side of the washer contacts the aluminum wiring terminal, and
the copper side contacts the AC terminal block.
Figure 5-1 Requirements for the OT terminal
Crimping the OT terminal
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Pay attention not to damage the core wire when stripping a cable.
The cavity formed after the conductor crimp strip of the OT terminal is crimped must wrap
the core wires completely. The core wires must contact the OT terminal closely.
Wrap the wire crimping area with heat shrink tubing or PVC insulation tape. The
following figure uses heat shrink tubing as an example.
When using the heat gun, protect devices from being scorched.
Figure 5-2 Crimping the OT Terminal
(1) Cable
(2) Core wire
(3) Heat shrink tubing
(4) OT terminal
(5) Hydraulic pliers
(6) Heat gun
5.3 Opening the Maintenance Compartment Door
Precautions
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Never open the host panel cover of the SUN2000.
Before opening the maintenance compartment door, ensure that neither of the AC and DC
connections to the SUN2000 is connected.
If you need to open the maintenance compartment door on rainy or snowy days, take
protective measures to prevent rain and snow entering the maintenance compartment. If it
is impossible to take protective measures, do not open the maintenance compartment door
on rainy or snowy days.
Do not leave extra hardware in the maintenance compartment.
Procedure
Step 1 Partially loosen the two screws on the maintenance compartment door.
Figure 5-3 Loosening screws
If the screws on the enclosure door are lost, obtain spare screws from the fitting bag bound to the
inductor cover at the bottom of the enclosure.
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Figure 5-4 Position for spare screws
Step 2 Open the maintenance compartment door and keep it open with the support bar.
Figure 5-5 Keeping the door open with a support bar
Step 3 Remove the cover and hang it on the hook of the door.
Figure 5-6 Removing a cover
----End
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5.4 Installing the AC Output Power Cable
Precautions
A three-phase AC switch needs to be configured outside the AC side of the SUN2000. To
ensure that the SUN2000 can safely disconnect from the power grid under abnormal
conditions, select an appropriate overcurrent protection device according to local power
distribution regulations.
Do not connect loads between the SUN2000 and the AC switch.
The SUN2000 is integrated with a comprehensive residual current monitoring unit (RCMU)
to distinguish fault current from residual current. Upon detecting that the residual current
exceeds the threshold, the SUN2000 immediately disconnects from the power grid.
If an AC switch that can detect residual current is installed outside the SUN2000-50KTL-M0, the
residual current value to trigger the switch should be greater than 550 mA.
If an AC switch that can detect residual current is installed outside the SUN2000-60KTL-M0, the
residual current value to trigger the switch should be greater than 660 mA.
If an AC switch that can detect residual current is installed outside the SUN2000-65KTL-M0, the
residual current value to trigger the switch should be greater than 720 mA.
Wiring Precautions
The ground point on the enclosure is preferred to connect to the PE cable for the
SUN2000.
The ground point in the maintenance compartment is mainly used for connecting to the
ground cable included in the multi-core AC power cable.
There are two ground points on the enclosure and you only need either of them.
It is recommended that the ground cable be connected to a nearby ground point. For a
system with multiple SUN2000s connected in parallel, connect the ground points of all
SUN2000s to ensure equipotential connections to ground cables.
Cable Specifications
If you connect a ground cable to the ground point on the chassis shell in a scenario with
no neutral wire, you are advised to use a three-core (L1, L2, and L3) outdoor cable as the
AC output power cable for the SUN2000-50KTL/60KTL-M0.
If you connect a ground cable to the ground point in the maintenance compartment in a
scenario with no neutral wire, you are advised to use a four-core (L1, L2, L3, and PE)
outdoor cable as the AC output power cable for the SUN2000-50KTL/60KTL-M0.
If you connect a ground cable to the ground point on the chassis shell in a scenario with a
neutral wire, you are advised to use a four-core (L1, L2, L3, and N) outdoor cable as the
AC output power cable for the SUN2000-50KTL/60KTL-M0.
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If you connect a ground cable to the ground point in the maintenance compartment in a
scenario with a neutral wire, you are advised to use a five-core (L1, L2, L3, N, and PE)
outdoor cable as the AC output power cable for the SUN2000-50KTL/60KTL-M0.
If you connect a ground cable to the ground point on the chassis shell, you are advised to
use a three-core (L1, L2, and L3) outdoor cable as the AC output power cable for the
SUN2000-65KTL-M0.
If you connect a ground cable to the ground point in the maintenance compartment, you
are advised to use a four-core (L1, L2, L3, and PE) outdoor cable as the AC output
power cable for the SUN2000-65KTL-M0.
You need to prepare OT-M10 terminals that match the cables.
Table 5-1 AC Power Cable Specifications
Cable Specifications
Copper-Core Cable
Copper-Clad
Aluminum Cable or
Aluminum Alloy
Cable
Conductor
cross-sectional area
(mm2)
Range
35–120
70–120
Recomme
nded
value
35
70
Table 5-2 Ground cable specifications
Cross-Sectional Area S (mm2) of the
AC Power Cable Conductor
Cross-Sectional Area SP (mm2) of the
PE Cable Conductor
16 < S ≤ 35
SP = 16
35 < S
SP = S/2
The values in this table are valid only if the PE cable and AC power cable use the same
conductor material. If this is not so, the cross-sectional area of the PE cable conductor is to
be determined in a manner which produces a conductance equivalent to that which results
from the application of this table.
Installing the PE Cable
Step 1 Crimp an OT terminal.
Step 2 Secure the PE cable using the ground screw.
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Figure 5-7 Connecting a PE cable
Step 3 (Optional) To enhance the corrosion resistance of a ground terminal, apply silica gel or paint
around the terminal.
----End
Installing the AC Output Power Cable
Step 1 Remove the locking cap from the AC OUTPUT connector and then remove the plug.
Step 2 Route the cable through the cable gland.
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1. Select appropriate rubber fittings based on the outer diameter of the AC power cable to
ensure proper sealing.
2. To avoid damaging the rubber fitting, do not route a cable with a crimped OT terminal
directly through the rubber fitting.
3. Adjusting a cable when the thread-lock sealing nut is tightened will shift the rubber fitting,
which will affect the Ingress Protection Rating of the device.
Figure 5-8 Routing a cable
Step 3 Remove an appropriate length of the jacket and insulation layer from the AC output power
cable using a wire stripper.
Ensure that the jacket is in the maintenance compartment.
Figure 5-9 Three-core cable (excluding the ground cable and neutral wire)
(A) Core wire
(B) Insulation layer
(C) Jacket
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Figure 5-10 Four-core cable (including the ground cable but excluding the neutral wire)
Figure 5-11 Four-core cable (excluding the ground cable but including the neutral wire)
Figure 5-12 Five-core cable (including the ground cable and neutral wire)
Step 4 Crimp an OT terminal.
Step 5 Land the AC output power cable in the terminal block, and tighten the nuts with a torque
wrench that has an extension rod.
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Ensure that AC terminations provide firm and solid electrical connections. Failing to do so
may cause SUN2000 malfunction and damage to its terminal block, even starting thermal
events. Any SUN2000 damaged due to weak termination will result in revocation of
product warranty.
If the AC output power cables are subject to a pulling force because the inverter is not
installed stably, ensure that the last cable that bears the stress is the PE cable.
Figure 5-13 SUN2000-50KTL/60KTL-M0 three-core cable connection (excluding the ground
cable and neutral wire)
Figure 5-14 SUN2000-50KTL/60KTL-M0 four-core cable connection (including the ground
cable but excluding the neutral wire)
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Figure 5-15 SUN2000-50KTL/60KTL-M0 four-core cable connection (excluding the ground
cable but including the neutral wire)
Figure 5-16 SUN2000-50KTL/60KTL-M0 five-core cable connection (including the ground
cable and neutral wire)
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Figure 5-17 SUN2000-65KTL-M0 three-core cable connection (excluding the ground cable)
Figure 5-18 SUN2000-65KTL-M0 four-core cable connection (including the ground cable)
The cable colors shown in figures are for reference only. Select an appropriate cable according to the
local standards.
Step 6 Tighten the cable gland.
Step 7 Clear debris from the maintenance compartment.
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Ensure that there are no cable residues, scraps, or conductive dusts in the maintenance
compartment.
----End
5.5 Connecting DC input power cables
Precautions
Before connecting the DC input power cable, ensure that the DC voltage is within the safe
range (lower than 60 V DC) and that the two DC switches on the SUN2000 are OFF.
Failing to do so may result in electric shocks.
When the SUN2000 is grid-tied, it is not allowed to work on DC circuit, such as
connecting or disconnecting a PV string or a PV module in a PV string. Failing to do so
may cause electric shocks or arcing (which may further cause fire).
Ensure that the following conditions are met. Otherwise, the SUN2000 will be damaged, or
even become a fire hazard.
The open-circuit voltage of each PV string is always lower than or equal to 1100 V DC.
The positive and negative terminals of a PV string are connected to corresponding positive
and negative DC input terminals of the SUN2000.
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Ensure that the PV module output is well insulated to ground.
The PV strings connecting to the same MPPT circuit should contain the same number of
identical PV modules.
During the installation of PV strings and SUN2000, the positive or negative terminals of
PV strings may be short-circuited to ground if power cables are not properly installed or
routed. In this case, an AC or DC short circuit may occur and damage the SUN2000. The
caused equipment damage is beyond the warranty scope.
Terminal Description
The SUN2000 provides 12 DC input terminals, among which terminals 1 to 6 are controlled
by DC switch 1 and terminals 7 to 12 are controlled by DC switch 2.
Figure 5-19 DC terminals
Select DC input terminals according to the following rules:
1. Evenly distribute DC input power cables on the DC input terminals controlled by the two
DC switches.
2. Maximize the number of connected MPPT circuits.
Cable Specifications
Cable Type
Conductor Cross-Sectional
Area (mm2)
Cable Outer Diameter
(mm)
PV cable that meets the
1100 V standard
8.0 (8 AWG)
6.05–8.56
Cables with high rigidity, such as armored cables, are not recommended, because poor contact
may be caused by the bending of the cables.
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Procedure
Step 1 Prepare the positive and negative connectors.
Use the Amphenol Helios H4 PV connectors provided with the SUN2000. If the terminals are
lost or damaged, purchase the PV connectors of the same model. The device damaged caused
by incompatible PV connectors is not covered under any warranty or service agreement.
Figure 5-20 Preparing positive and negative connectors
(1) Positive metal
terminal
(2) Negative metal
terminal
(3) Positive
connector
(4) Negative
connector
After the positive and negative metal terminals snap into place, pull the DC input power
cables back to ensure that they are connected securely.
Step 2 Use a multimeter to measure the DC voltage between the positive and negative of the PV
string and confirm the string polarity.
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The DC voltage measurement range of the multimeter must be at least 1100 V.
Figure 5-21 Measuring voltage
If the voltage is a negative value, the PV string is of reversed polarity. Correct before
connecting this string to the SUN2000.
If the voltage is greater than 1100 V, too many PV modules are configured to the same
string. Remove some PV modules.
Step 3 Pull out the blue dustproof plugs from the ends of the DC input connectors.
Before performing Step 4, ensure that the two DC switches are OFF.
Step 4 Insert the positive and negative connectors into the corresponding positive and negative DC
input terminals of the SUN2000 until they snap into place.
After the positive and negative connectors snap into place, pull test to the DC input power
cable is recommended.
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Figure 5-22 Connecting DC input power cables
If polarity of the DC input power cable is reversed and the DC switch is ON, do not turn off
the DC switch immediately or unplug positive and negative connectors. The device may be
damaged if you do not follow the instruction. The caused equipment damage is beyond the
warranty scope. Wait until the solar irradiance declines and the PV string current reduces to
below 0.5 A, and then turn off the two DC switches and remove the positive and negative
connectors. Correct the string polarity before reconnecting the string to the SUN2000.
----End
5.6 Installing the Communications Cable
5.6.1 Communication Mode Description
RS485 Communication
The SUN2000 can connect to the SmartLogger over RS485 and to a PC through the
SmartLogger to establish communication. You can use the SUN2000 app, SmartLogger,
embedded WebUI, or the network management software (such as the NetEco) on the PC to
query information about the SUN2000, such as energy yields, alarms, and running status.
Figure 5-23 shows the communication mode for a single SUN2000.
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Figure 5-23 Communication mode for a single SUN2000
Figure 5-24 shows the communication mode for multiple SUN2000s.
If multiple SUN2000s are used, connect all the SUN2000s in daisy chain mode over an
RS485 communications cable.
Figure 5-24 Communication mode for multiple SUN2000s
The RS485 communication distance between the SUN2000 at the end of the daisy chain and the
SmartLogger cannot exceed 1000 meters.
If multiple SUN2000s need to communicate with one another and are connected to a PC over the
SmartLogger2000, a maximum of six daisy chains can be configured.
To ensure the system response speed, it is recommended that the number of devices on each daisy
chain be less than 30.
PLC Communication
The PLC communication board loads communication signals onto power cables for
transmission. For details about how to install the PLC module, see the PLC CCO01A User
Manual or SmartLogger2000 User Manual.
The built-in PLC module in the SUN2000 does not need to be connected with additional cables.
Selecting a Communication Mode
The RS485 and PLC communication modes are mutually exclusive.
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If the PLC communication mode is selected, do not connect the RS485 communications
cable. In addition, you need to set PLC Communication to Enable on the SUN2000
app.
If the RS485 communication mode is selected, do not connect the PLC CCO module to
the AC power cable or connect the AC power cable for the SmartLogger2000. In
addition, you are advised to set PLC Communication to Disable on the SUN2000 app.
PLC Communication is set to Enable by default.
5.6.2 Installing the RS485 Communications Cable
Selecting an Installation Mode
An RS485 communications cable can be connected in two ways:
Terminal block connection
Recommended: DJYP2VP2-22 2x2x1 PC cable or communications cable with a
conductor cross-sectional area of 1 mm2 and a cable outer diameter of 14–18 mm.
RJ45 network port connection
Recommended: CAT 5E outdoor shielded network cable with an outer diameter less than
9 mm and internal resistance no greater than 1.5 ohms/10 m, with a shielded RJ45
connector.
Select only one installation mode in practice. Terminal block connection is recommended.
When laying out communications cables, separate them from power cables to avoid strong
signal interference sources.
5.6.2.1 Terminal Block Connection
Terminal Block Port Definitions
Figure 5-25 shows an RS485 terminal block.
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Figure 5-25 Terminal block
Table 5-3 Port definitions of the RS485 terminal block
No.
Port Definition
Description
1
RS485A IN
RS485A, differential signal+
2
RS485A OUT
RS485A, differential signal+
3
RS485B IN
RS485B, differential signal–
4
RS485B OUT
RS485B, differential signal–
Connecting Cables to the Terminal Block
Step 1 Remove an appropriate length of the jacket and core wire insulation layer from the
communications cable using a wire stripper.
Figure 5-26 Stripping an RS485 communications cable
Step 2 Route the communications cable through the cable gland.
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Figure 5-27 Routing a cable
Step 3 Remove the cable terminal base from the terminal block, and connect the communications
cable to the terminal base.
Figure 5-28 Connecting cables to a terminal base
(1) RS485A IN
(2) RS485A OUT
(3) RS485B IN
(4) RS485B OUT
Step 4 Land the cables in the terminal block, and bond the shield layer to the ground point.
When connecting the shielded cable, crimp the OT terminal if required.
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Figure 5-29 Connecting communications cables
Step 5 Bundle communications cables after connecting them.
Figure 5-30 Bundling communications cables
Step 6 Tighten the cable gland and seal the waterproof connector.
----End
5.6.2.2 Connecting Cables to the RJ45 Network Port
RJ45 Connector Pin Definitions
Figure 5-31 shows an RJ45 connector.
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Figure 5-31 RJ45 connector
Table 5-4 lists the RJ45 connector pin definitions.
Table 5-4 RJ45 connector pin definitions
Pin
Color
Function
1
White-and-orange
RS485A, differential signal+
2
Orange
RS485B, differential signal–
3
White-and-green
N/A
4
Blue
RS485A, differential signal+
5
White-and-blue
RS485B, differential signal–
6
Green
N/A
7
White-and-brown
N/A
8
Brown
N/A
Connecting Cables to the RJ45 Network Port
Step 1 Prepare an RJ45 connector.
Figure 5-32 Preparing an RJ45 connector
(1) White-and-orange
(2) Orange
(3) White-and-green
(4) Blue
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(5) White-and-blue
(6) Green
(7) White-and-brown
(8) Brown
Step 2 Route the communications cable through the cable gland.
Figure 5-33 Routing a cable
Step 3 Insert the RJ45 connector into the RJ45 network port in the SUN2000 maintenance
compartment.
Figure 5-34 Connecting communications cables
Step 4 Bundle communications cables after connecting them.
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Figure 5-35 Bundling communications cables
Step 5 Tighten the cable gland and seal the waterproof connector.
----End
5.6.3 (Optional) Installing the Solar Tracker Power Cable
Precautions
1. A switch-disconnector-fuse or fuse-switch-disconnector with a voltage of no less than 500
V, current of 16 A, and protection type of gM needs to be installed between the SUN2000
and the tracker controller for protection.
2. The cable between the wiring terminal on the power cable and the
switch-disconnector-fuse or fuse-switch-disconnector should be less than or equal to 2.5
meters.
Cable Specifications
Recommended: dual-layer three-core outdoor copper cable with a conductor cross-sectional
area of 10 mm2.
Do not place flammable materials around the cable.
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Procedure
Step 1 Remove an appropriate length of the jacket and insulation layer from the tracking power cable
using a wire stripper. (Ensure that the jacket is in the maintenance compartment.)
Figure 5-36 Stripping a cable
(A) Core wire
(B) Insulation layer
(C) Jacket
Step 2 Remove the shielding cover from wiring terminals.
Figure 5-37 Removing a shielding cover
Step 3 Route the cable through the cable gland.
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Figure 5-38 Routing a cable
Step 4 Connect the solar tracker power cable.
Figure 5-39 Connecting a solar tracker power cable
Step 5 Install the shielding cover on wiring terminals.
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Figure 5-40 Installing a shielding cover
Step 6 Tighten the cable gland and seal the waterproof connector.
----End
5.7 Closing the Maintenance Compartment Door
Procedure
Step 1 Install the AC terminal cover.
Figure 5-41 Installing a cover
Step 2 Retrieve the support bar.
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Figure 5-42 Retrieving a support bar
Step 3 Close the maintenance compartment door and tighten the two screws on the door.
Figure 5-43 Tightening screws
----End
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6 Commissioning
6.1 Checking Before Power-On
1. Check that the SUN2000 is installed correctly and securely.
2. Check that the DC switch and downstream AC output switch are OFF.
3. Check that all ground cables are connected correctly and securely.
4. Check that all AC output power cables are connected correctly and securely, without
open circuits or short circuits.
5. Check that all DC input power cables are connected correctly and securely, without open
circuits or short circuits.
6. Check that the communications cable is connected correctly and securely.
7. Check that all used cable glands at the bottom of the enclosure are sealed, and that the
thread-lock sealing nut is tightened.
8. Check that the AC terminal cover is reinstalled.
9. Check that the maintenance compartment interior is clean and tidy, without foreign
matter.
10. Check that the maintenance compartment door is closed and the door screws are
tightened.
11. Check that unused DC input terminals are sealed.
12. Check that unused USB ports are plugged with watertight caps.
13. Check that unused cable glands are plugged and the thread-lock sealing nuts are
tightened.
6.2 Powering On the SUN2000
Precautions
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Before turning on the AC switch between the SUN2000 and the power grid, use a multimeter
to check that the AC voltage is within the specified range.
Procedure
Step 1 Turn on the AC switch between the SUN2000 and the power grid.
If you perform Step 2 before Step 1, the SUN2000 reports a fault about abnormal shutdown.
You can start the SUN2000 only after the fault is automatically rectified.
Step 2 Turn on the DC switch at the bottom of the SUN2000.
Step 3 Connect the SUN2000 to the mobile phone that runs SUN2000 app through a Bluetooth
module or USB data cable.
Mobile phone operating system: Android 4.0 or later, iOS 7.0 or later. When the iOS is
used, the app supports only Bluetooth connection.
The screenshots in this document correspond to SUN2000 app 2.2.00.
Figure 6-1 Bluetooth module connection
(A) SUN2000
(B) Bluetooth module
(C) Mobile phone
Purchase the Bluetooth module bundled with the SUN2000. A Bluetooth module purchased from any
other source may not support communication between the SUN2000 and the app.
The Android system supports the Bluetooth module USB-Adapter2000-B and BF4030.
The iOS system supports the Bluetooth module USB-Adapter2000-B.
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Figure 6-2 Data cable connection
(A) SUN2000
(B) USB data cable
(C) Mobile phone
Use the USB data cable provided with the mobile phone.
The port type of the USB data cable connected to the SUN2000 is USB 2.0.
If the mobile phone provides a USB Type-C port, prepare a USB Type C to USB 2.0 adapter cable.
Figure 6-3 Login screen
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Figure 6-4 Selecting a connection mode
Figure 6-5 Bluetooth connection
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Figure 6-6 Data cable connection
After you select Use by default for this USB accessory, the message that asks you whether the
SUN2000 app is allowed to access the USB will not appear if you reconnect the app without
disconnecting the USB data cable.
Step 4 Tap the user name area on the SUN2000 app to switch between Common User, Advanced
User, and Special User.
Figure 6-7 Switching between users
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The login password is the same as that for the SUN2000 connected to the app and is used only for
the SUN2000 to connect to the app.
The initial passwords for Common User, Advanced User, and Special User are all 00000a. Use the
initial password upon first login. To ensure account security, change the password immediately after
login.
During login, if five consecutive invalid password attempts are made (the interval between two
consecutive attempts is less than 2 minutes), the account will be locked for 10 minutes. The
password should consist of 6 characters.
Step 5 Enter the password and tap Log In.
Step 6 After successful login, the Quick Settings screen or main menu screen is displayed.
If you log in to the SUN2000 app after the device connects to the app for the first time or factory
defaults are restored, the Quick Settings screen will be displayed, on which you can set basic
parameters. After the settings take effect, you can enter the main menu screen and modify the
parameters on the Settings screen. By default, the SUN2000 can export power to the power grid and
you do not have to set parameters.
You are advised to log in to the Quick Settings screen as Advanced User for parameter settings.
Figure 6-8 Quick Settings screen (advanced user)
Set the grid code that applies to the country or region where the PV plant is located and the
SUN2000 model.
Set user parameters based on the current date and time.
Set Baud rate, RS485 protocol, and Com address based on site requirements. Baud rate can be set
to 4800, 9600, or 19200. RS485 protocol can be set to MODBUS RTU, and Com address can be
set to any value in the range of 1 to 247.
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When multiple SUN2000s communicate with the SmartLogger over RS485, the RS485 addresses
for all the SUN2000s on each RS485 route must be within the address range set on the SmartLogger
and cannot be duplicate. Otherwise, the communication will fail. In addition, the baud rates of all the
SUN2000s on each RS485 route must be consistent with the SmartLogger baud rate.
Figure 6-9 Main menu screen
----End
6.3 Powering Off the System
Precautions
If two SUN2000s share the same AC switch on the AC side, power off the two SUN2000s.
After the SUN2000 powers off, the remaining electricity and heat may still cause electric
shocks and body burns. Therefore, put on personal protective equipment (PPE) and begin
servicing the SUN2000 fifteen minutes after power-off.
Procedure
Step 1 Run a shutdown command on the SUN2000 app, SmartLogger, or NMS.
For details, see the SUN2000 App User Manual, SmartLogger2000 User Manual, or
iManager NetEco 1000S User Manual.
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Step 2 Turn off the AC switch between the SUN2000 and the power grid.
Step 3 Turn off both DC switches.
----End
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7 Man-Machine Interactions
7.1 Operations with a USB Flash Drive
USB flash drives of SanDisk, Netac, and Kingston are recommended. Other brands may be
incompatible.
7.1.1 Exporting Configurations
Procedure
Step 1 On the SUN2000 APP, tap Inverter Command Settings to generate a boot script file. For
details, see the SUN2000 APP User Manual.
Step 2 Import the boot script file to a PC.
(Optional) The boot script file can be opened as a .txt file, as shown in Figure 7-1.
Figure 7-1 Boot script file
No.
Meaning
Remarks
1
User name
Advanced user: engineer
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No.
Meaning
Remarks
Special user: admin
2
Ciphertext
The ciphertext varies depending on the login password of the
SUN2000 APP.
3
Script validity
period
The script validity period varies depending on the script export
time.
4
Command
Different command settings can produce different commands.
Configuration export command: export param.
Configuration import command: import param.
Data export command: export log.
Upgrade command: upgrade.
Step 3 Import the boot script file to the root directory of a USB flash drive.
Step 4 Connect the USB flash drive to the USB port. The system automatically identifies the USB
flash drive and executes all commands specified in the boot script file. View the LED
indicator to determine the operating status.
Verify that the ciphertext in the boot script file matches the login password of the SUN2000
APP. If they do not match and you insert the USB flash drive for five consecutive times, the
user account will be locked for 10 minutes.
Table 7-1 LED indicator description
LED Indicator
Status
Meaning
Green off
There is no operation with
a USB flash drive.
Blinking green at long intervals (on
for 1s and then off for 1s)
There is an operation with
a USB flash drive.
Blinking green at short intervals (on
for 0.125s and then off for 0.125s)
An operation with a USB
flash drive has failed.
Steady green
An operation with a USB
flash drive is successful.
Step 5 Insert the USB flash drive into a computer and check the exported data.
When the configuration export is complete, the boot script file and exported file are in the root directory
of the USB flash drive.
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----End
7.1.2 Importing Configurations
Prerequisites
A complete configuration file has been exported.
Procedure
Step 1 On the SUN2000 APP, tap Inverter Command Settings to generate a boot script file. For
details, see the SUN2000 APP User Manual.
Step 2 Import the boot script file to a PC.
Step 3 Replace the exported boot script file in the root directory of the USB flash drive with the
imported one.
Replace the boot script file only and keep the exported files.
Step 4 Connect the USB flash drive to the USB port. The system automatically identifies the USB
flash drive and executes all commands specified in the boot script file. View the LED
indicator to determine the operating status.
Verify that the ciphertext in the boot script file matches the login password of the SUN2000
APP. If they do not match and you insert the USB flash drive for five consecutive times, the
user account will be locked for 10 minutes.
Table 7-2 LED indicator description
LED Indicator
Status
Meaning
Green off
There is no operation with
a USB flash drive.
Blinking green at long intervals (on
for 1s and then off for 1s)
There is an operation with
a USB flash drive.
Blinking green at short intervals (on
for 0.125s and then off for 0.125s)
An operation with a USB
flash drive has failed.
Steady green
An operation with a USB
flash drive is successful.
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----End
7.1.3 Exporting Data
Procedure
Step 1 On the SUN2000 APP, tap Inverter Command Settings to generate a boot script file. For
details, see the SUN2000 APP User Manual.
Step 2 Import the boot script file to the root directory of a USB flash drive.
Step 3 Connect the USB flash drive to the USB port. The system automatically identifies the USB
flash drive and executes all commands specified in the boot script file. View the LED
indicator to determine the operating status.
Verify that the ciphertext in the boot script file matches the login password of the SUN2000
APP. If they do not match and you insert the USB flash drive for five consecutive times, the
user account will be locked for 10 minutes.
Table 7-3 LED indicator description
LED Indicator
Status
Meaning
Green off
There is no operation with
a USB flash drive.
Blinking green at long intervals (on
for 1s and then off for 1s)
There is an operation with
a USB flash drive.
Blinking green at short intervals (on
for 0.125s and then off for 0.125s)
An operation with a USB
flash drive has failed.
Steady green
An operation with a USB
flash drive is successful.
Step 4 Insert the USB flash drive into a PC and check the exported data.
After the data is exported, the boot script file and exported file are in the root directory of the USB flash
drive.
----End
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7.1.4 Upgrading
Context
Upgrade delay is mainly used in the upgrade scenarios where the PV power supply is
disconnected at night due to no sunlight or unstable at dawn or dusk due to poor sunlight.
After the SUN2000 upgrade starts, if Upgrade delay is set to Enable, the upgrade package is
loaded first. After the PV power supply recovers and the activation conditions are met, the
SUN2000 automatically activates the upgrade.
Upgrade delay is set to Enable by default, which means that the upgrade can take place at day or night.
After enabling Upgrade delay, start the SUN2000 upgrade over a USB flash drive, SmartLogger, or
NMS. The SUN2000 upgrade process contains the following two stages:
1. The monitoring component caches and loads the upgrade package.
2. Upgrade package activation starts when the following conditions are met.
Table 7-4 Conditions for starting delayed activation
Upgrade Method
Activation Start Condition
Local upgrade over a USB
flash drive
The CAN communication is normal.
The PV power supply is normal.
The activation starts when either of the preceding two
conditions is met.
Local upgrade of the SUN2000
APP
Remote upgrade over the
SmartLogger
The PV input voltage is greater than 500 V.
The output power is greater than 1 kW.
The activation starts when either of the preceding two
conditions is met.
Remote upgrade over the NMS
When upgrading the SUN2000 remotely, do not perform local operations for the SUN2000.
Procedure
Step 1 Log in to http://support.huawei.com/carrier/ and browse or search for SUN2000 on the
Product Support tab page. Download the required upgrade package (for example, SUN2000
V300R001C00SPCXXX) from the Software tab page.
Step 2 Decompress the upgrade package.
After obtaining the upgrade package SUN2000V300R001C00SPCXXX_package.zip,
decompress it and ensure that the extracted files include:
config.txt
config_arm9.txt
sun_lmt_mgr_cmd.emap (This is a boot script file.)
SUN2000.bin
SUN2000_CPLD.bin
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SUN2000_FE.bin
SUN2000_Master_Release.bin
SUN2000_Slave_Release.bin
update.sh
vercfg.xml
When the login password of the SUN2000 APP is the initial password (00000a), there is
no need to perform Step 3–Step 5.
When the login password of the SUN2000 APP is not the initial password, perform Step
3–Step 7.
Step 3 On the SUN2000 APP, tap Inverter Command Settings to generate a boot script file. For
details, see the SUN2000 APP User Manual.
Step 4 Import the boot script file to a PC.
Step 5 Replace the boot script file in the upgrade package with the one generated by the SUN2000
APP.
Step 6 Copy the extracted files to the root directory of the USB flash drive.
Step 7 Connect the USB flash drive to the USB port. The system automatically identifies the USB
flash drive and executes all commands specified in the boot script file. View the LED
indicator to determine the operating status.
Verify that the ciphertext in the boot script file matches the login password of the SUN2000
APP. If they do not match and you insert the USB flash drive for five consecutive times, the
user account will be locked for 10 minutes.
Table 7-5 LED indicator description
LED Indicator
Status
Meaning
Green off
There is no operation with
a USB flash drive.
Blinking green at long intervals (on
for 1s and then off for 1s)
There is an operation with
a USB flash drive.
Blinking green at short intervals (on
for 0.125s and then off for 0.125s)
An operation with a USB
flash drive has failed.
Steady green
An operation with a USB
flash drive is successful.
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Step 8 (Optional) The system automatically restarts when the upgrade is completed. All LED
indicators turn off during the restart. After the restart, the green indicator is blinking at long
intervals (on for 1s and then off for 1s) for 1 minute until it becomes steady on, which
indicates that the upgrade is successful.
The SUN2000 can also be upgraded through the Inverter Update in the SUN2000 app. For details, see
the SUN2000 APP User Manual.
----End
7.2 Operations with the SUN2000 App
For operations with the SUN2000 APP, see the SUN2000 APP User Manual.
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8 Maintenance
8.1 Routine Maintenance
To ensure that the SUN2000 can operate properly for a long term, you are advised to perform
routine maintenance on it as described in this chapter.
Before cleaning the system and maintaining the cable connections and grounding
reliability, power off the system (see 6.3 Powering Off the System for details) and ensure
that the two DC switches on the SUN2000 are OFF.
If you need to open the maintenance compartment door on rainy or snowy days, take
protective measures to prevent rain and snow entering the maintenance compartment. If it
is impossible to take protective measures, do not open the maintenance compartment door
on rainy or snowy days.
Table 8-1 Maintenance checklist
Item
Check Method
Maintenance
Frequency
System cleanliness
Periodically check that the heat sinks
are free from obstacles or dust.
Once every six to twelve
months
System running
status
Check that the SUN2000 is not
damaged or deformed.
Check that the running sound of the
SUN2000 is normal.
When the SUN2000 is running,
check that all SUN2000 parameters
are correctly set.
Once every six months
Electrical
connections
Check that cables are securely
connected.
Check that cables are intact, in
particular, the parts touching the
The first inspection is six
months after the initial
commissioning. From
then on, the interval can
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Item
Check Method
Maintenance
Frequency
metallic surface are not scratched.
Check that the unused COM, USB,
and RESERVE ports are covered by
watertight caps.
be six or twelve months.
Grounding
reliability
Check that ground cables are securely
connected.
The first inspection is six
months after the initial
commissioning. From
then on, the interval can
be six or twelve months.
8.2 Troubleshooting
Alarm severities are defined as follows:
Major: The SUN2000 enters Shutdown mode and stops exporting power to the power
grid due to a fault.
Minor: Some components are faulty but the SUN2000 can still export power to the
power grid.
Warning: The SUN2000 output power decreases due to external factors.
Table 8-2 Common alarms and troubleshooting measures
Alarm
ID
Alarm
Name
Alarm
Severit
y
Cause
Measures
2001
High
string
input
voltage
Major
The PV array is incorrectly configured.
Excessive PV modules are connected
in series to the PV string, and hence
the PV string open-circuit voltage
exceeds the maximum operating
voltage of the SUN2000.
Cause ID 1 corresponds to PV
strings 1 and 2.
Cause ID 2 corresponds to PV
strings 3 and 4.
Cause ID 3 corresponds to PV
strings 5 and 6.
Cause ID 4 corresponds to PV
strings 7 and 8.
Cause ID 5 corresponds to PV
strings 9 and 10.
Cause ID 6 corresponds to PV
strings 11 and 12.
Reduce the number of PV
modules connected in series to the
PV string until the PV string
open-circuit voltage is less than or
equal to the maximum operating
voltage of the SUN2000. After the
PV array configuration is
corrected, the alarm stops.
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Alarm
ID
Alarm
Name
Alarm
Severit
y
Cause
Measures
2011
String
Reverse
Connecti
on
Major
The PV string is reversely connected.
Cause IDs 1 to 12 respectively
correspond to PV strings 1 to 12.
Check whether the PV string is
reversely connected to the
SUN2000. If yes, wait until the
solar irradiance declines at night
and the PV string current reduces
to below 0.5 A. Then, turn off the
two DC switches and correct the
PV string connection.
2012
String
current
backfeed
Warning
1. Only a few PV modules are
connected in series to the PV string,
and hence the end voltage is lower
than that of other PV strings.
2. The PV string is shaded.
Cause IDs 1 to 12 respectively
correspond to PV strings 1 to 12.
1. Check whether the number of
PV modules connected in
series to this PV string is less
than the number of PV
modules connected in series to
the other PV strings. If yes,
connect more PV modules in
series to this PV string.
2. Check the open-circuit voltage
of the PV string.
3. Check that the PV string is not
shaded.
2013
Abnorma
l String
Power
Warning
1. The PV string has been shaded for
a long time.
2. The PV string deteriorates
abnormally.
Cause IDs 1 to 12 respectively
correspond to PV strings 1 to 12.
1. Check whether the current of
the abnormal PV string is
lower than the current of other
PV strings. If yes, check that
the abnormal PV string is not
shaded and the actual number
of PV strings is the same as the
configured number.
2. If the abnormal PV string is
clean and not shaded, check
whether the PV string is
damaged.
2031
Phase
Wire
Short-Cir
cuited to
PE
Major
The impedance of the output phase
wire to PE is low or the output phase
wire is short-circuited to PE.
Check the impedance of the
output phase wire to PE, locate the
position with lower impedance,
and rectify the fault.
2032
Grid
Loss
Major
1. The power grid experiences an
outage.
2. The AC circuit is disconnected or
AC switch is off.
1. The alarm disappears
automatically after the power
grid recovers.
2. Check that the AC power cable
is connected and that the AC
switch is ON.
2033
Grid
Loss
Major
The grid voltage is below the lower
threshold or the low voltage duration
has lasted for more than the value
specified by LVRT.
1. If the alarm occurs
accidentally, the power grid
may be abnormal temporarily.
The SUN2000 automatically
recovers after detecting that
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Alarm
ID
Alarm
Name
Alarm
Severit
y
Cause
Measures
the power grid becomes
normal.
2. If the alarm occurs frequently,
check whether the power grid
voltage is within the
acceptable range. If no, contact
the local power operator. If
yes, modify the power grid
undervoltage protection
threshold with the consent of
the local power operator.
3. If the fault persists for a long
time, check the AC circuit
breaker and AC output power
cable.
2034
Grid
Overvolt
age
Major
The grid voltage exceeds the higher
threshold or the high voltage duration
has lasted for more than the value
specified by HVRT.
1. Check whether the grid
connection voltage exceeds the
upper threshold. If yes, contact
the local power operator.
2. If you have confirmed that the
grid connection voltage
exceeds the upper threshold
and obtained the consent of the
local power operator, modify
the undervoltage protection
threshold.
3. Check that the peak grid
voltage does not exceed the
upper threshold.
2035
Grid
Voltage
Imbalanc
e
Major
The difference between grid phase
voltages exceeds the upper threshold.
1. Check that the grid voltage is
within the normal range.
2. Check the connection of the
AC output power cable. If the
cable connection is proper but
the alarm occurs frequently
and affects the power
production of the PV plant,
contact the local power
operator.
2036
Grid
Overfreq
uency
Major
Power grid exception: The actual grid
frequency is higher than the
requirement of the local power grid
standard.
1. If the alarm occurs
accidentally, the power grid
may be abnormal temporarily.
The SUN2000 automatically
recovers after detecting that
the power grid becomes
normal.
2. If the alarm occurs frequently,
check whether the grid
frequency is within the
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Alarm
ID
Alarm
Name
Alarm
Severit
y
Cause
Measures
acceptable range. If no, contact
the local power operator. If
yes, modify the power grid
overfrequency protection
threshold with the consent of
the local power operator.
2037
Grid
Underfre
quency
Major
Power grid exception: The actual
power grid frequency is lower than the
standard requirement for the local
power grid.
1. If the alarm occurs
accidentally, the power grid
may be abnormal temporarily.
The SUN2000 automatically
recovers after detecting that
the power grid becomes
normal.
2. If the alarm occurs frequently,
check whether the grid
frequency is within the
acceptable range. If no, contact
the local power operator. If
yes, modify the power grid
underfrequency protection
threshold with the consent of
the local power operator.
2038
Unstable
Grid
Frequenc
y
Major
Power grid exception: The actual grid
frequency change rate does not comply
with the local power grid standard.
1. If the alarm occurs
accidentally, the power grid
may be abnormal temporarily.
The SUN2000 automatically
recovers after detecting that
the power grid becomes
normal.
2. If the alarm occurs frequently,
check whether the grid
frequency is within the
acceptable range. If no, contact
the local power operator.
2039
Output
Overcurr
ent
Major
The power grid voltage drops
dramatically or the power grid is
short-circuited. As a result, the inverter
transient output current exceeds the
upper threshold and therefore the
inverter protection is triggered.
1. The inverter detects its
external working conditions in
real time. After the fault is
rectified, the inverter
automatically recovers.
2. If the alarm occurs frequently
and affects the power
production of the PV plant,
check whether the output is
short-circuited. If the fault
persists, contact Huawei
technical support.
2040
Output
DC
Compon
Major
The DC component of the SUN2000
output current exceeds the specified
upper threshold.
1. If the exception is caused by
an external fault, the SUN2000
automatically recovers after
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Alarm
ID
Alarm
Name
Alarm
Severit
y
Cause
Measures
ent
Overhigh
the fault is rectified.
2. If the alarm occurs frequently
and affects the power
production of the PV plant,
contact Huawei technical
support.
2051
Abnorma
l
Residual
Current
Major
The insulation impedance of the input
side to PE decreases when the
SUN2000 is operating.
1. If the alarm occurs
accidentally, the external
power cable may be abnormal
temporarily. The SUN2000
automatically recovers after
the fault is rectified.
2. If the alarm occurs frequently
or persists, check that the
impedance between the PV
string and ground is not below
the lower threshold.
2061
Abnorma
l
Groundin
g
Major
1. The PE cable for the SUN2000 is
not connected.
2. The SUN2000 output side does not
connect to an isolation transformer
when the PV string output is
grounded.
1. Check that the PE cable for the
SUN2000 is connected
properly.
2. If the PV string output is
grounded, check that the
SUN2000 output side connects
to an isolation transformer.
2062
Low
Insulatio
n
Resistanc
e
Major
1. The PV string is short-circuited to
PE.
2. The PV string has been in a moist
environment for a long time and the
power cable is not well insulated to
ground.
1. Check the impedance between
the PV string and the PE cable.
If a short circuit occurs, rectify
the fault.
2. Check that the PE cable for the
SUN2000 is correctly
connected.
3. If you are sure that the
impedance is less than the
default value in a cloudy or
rainy environment, reset
Insulation resistance
protection.
2063
Cabinet
Overtem
perature
Major
1. The SUN2000 is installed in a
place with poor ventilation.
2. The ambient temperature exceeds
the upper threshold.
3. The SUN2000 is not working
properly.
1. Check the ventilation and
ambient temperature at the
SUN2000 installation position.
If the ventilation is poor or the
ambient temperature exceeds
the upper threshold, improve
the ventilation and heat
dissipation.
2. If the ventilation and ambient
temperature both meet
requirements, contact Huawei
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Alarm
ID
Alarm
Name
Alarm
Severit
y
Cause
Measures
technical support.
2064
Device
Fault
Major
An unrecoverable fault occurs on a
circuit inside the SUN2000.
Turn off the AC output switch and
DC input switch, and then turn
them on after 15 minutes. If the
fault persists, contact Huawei
technical support.
2065
Upgrade
Failed
Minor
The upgrade ends abnormally.
1. Perform an upgrade again.
2. If the upgrade fails several
times, contact your dealer.
2066
License
Expired
Warning
1. The privilege certificate has entered
the grace period.
2. The privilege feature will be invalid
soon.
1. Apply for a new certificate.
2. Load the new certificate.
61440
Faulty
Monitori
ng Unit
Minor
1. The flash memory is insufficient.
2. The flash memory has bad sectors.
Turn off the AC output switch and
DC input switch, and then turn
them on after 15 minutes. If the
fault persists, replace the
monitoring board or contact
Huawei technical support.
Contact Huawei technical support if all failure analysis procedures listed above are completed and the
fault still exists.
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9 Handling the Inverter
9.1 Removing the SUN2000
Before removing the SUN2000, disconnect both the AC and DC power supplies. For details
about the power-off process, see 6.3 Powering Off the System. After powering off the
SUN2000, wait at least 15 minutes before performing operations on it.
To remove the SUN2000, perform the following steps:
1. Disconnect all cables from the SUN2000, including RS485 communications cables, DC
input power cables, AC output power cables, and PE cables.
2. Remove the SUN2000 from the mounting bracket.
3. Remove the mounting bracket.
9.2 Packing the SUN2000
If the original packing materials are available, put the SUN2000 inside them and then
seal them by using adhesive tape.
If the original packing materials are not available, put the SUN2000 inside a suitable
cardboard box and seal it properly.
9.3 Disposing of the SUN2000
If the SUN2000 service life expires, dispose of it according to the local disposal rules for
electrical equipment waste.
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10 Technical Specifications
Efficiency
Item
SUN2000-50KTL
-M0
SUN2000-60KTL-M
0
SUN2000-65KTL
-M0
Maximum efficiency
98.70%
98.70%
(400 V)
98.90%
(480 V)
98.90%
European efficiency
98.50%
98.50%
(400 V)
98.70%
(480 V)
98.70%
Input
Item
SUN2000-50KT
L-M0
SUN2000-60KT
L-M0
SUN2000-65KTL
-M0
Maximum input power
56,200 W
67,400 W
73,500 W
Maximum input voltage
1100 V
Maximum input current (per
MPPT)
22 A
Maximum input current (per
string)
18 A
Maximum short-circuit
current (per MPPT)
30 A
Maximum SUN2000
backfeed current to the PV
array
0 A
Lowest startup voltage
200 V
Operating voltage range
200–1000 V
Full power MPPT voltage
range
520–800 Va
520–800 Vb (400
V), 650–850 V
(480 V)
600–850 V
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Item
SUN2000-50KT
L-M0
SUN2000-60KT
L-M0
SUN2000-65KTL
-M0
Rated input voltage
600 V
600 V (400 V),
720 V (480 V)
720 V
Number of inputs
12
Number of MPP trackers
6
Note a: The SUN2000 supports a maximum input voltage of 700 V at full load without
deration when the ambient temperature is 50°C.
b: The SUN2000 supports a maximum input voltage of 700 V at full load without
deration when the ambient temperature is 40°C .
Output
Item
SUN2000-50KT
L-M0
SUN2000-60KT
L-M0
SUN2000-65KTL
-M0
Rated active power
50 kW
60 kW
65 kW
Maximum apparent power
55 kVA
66 kVA
72 kVA
Maximum active power
(cosφ = 1)
55 kW
66 kW
72 kW
Rated output voltage
230 V/400 V
230 V/400 V,
277 V/480 V
277 V/480 V
Rated output current
72.2 A
86.7 A (400
Vac), 72.2 A
(480 Vac)
78.2 A
Adapted grid frequency
50 Hz/60 Hz
Maximum output current
79.4 A
95.3 A (400
Vac), 79.4 A
(480 Vac)
86.7A
Power factor
0.8 leading ... 0.8 lagging
Maximum total harmonic
distortion (rated power)
< 3%
Protection
Item
SUN2000-50KT
L-M0
SUN2000-60KT
L-M0
SUN2000-65KTL
-M0
Input DC switch
Supported
Anti-islanding protection
Supported
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Item
SUN2000-50KT
L-M0
SUN2000-60KT
L-M0
SUN2000-65KTL
-M0
Output overcurrent
protection
Supported
Input reverse polarity
protection
Supported
PV string fault detection
Supported
DC surge protection
Type II
AC surge protection
Type II
Insulation resistance
detection
Supported
Residual current monitoring
unit (RCMU)
Supported
Overvoltage category
PV II/AC III
Display and Communication
Item
SUN2000-50KT
L-M0
SUN2000-60KT
L-M0
SUN2000-65KTL
-M0
Display
LED, Bluetooth module+app, USB data cable+app
Communication
RS485/PLC
Common Parameters
Item
SUN2000-50KT
L-M0
SUN2000-60KT
L-M0
SUN2000-65KTL
-M0
Dimensions (W x H x D)
1075 mm x 555 mm x 300 mm
Weight
About 73 kg
About 70 kg
Operating temperature
–25°C to +60°C
Cooling mode
Natural convection
Maximum operating altitude
4000 m
Humidity
0%–100% RH
Input terminal
Amphenol Helios H4
Output terminal
Cable gland+OT terminal
Ingress Protection Rating
IP65
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Item
SUN2000-50KT
L-M0
SUN2000-60KT
L-M0
SUN2000-65KTL
-M0
Topology
Transformerless
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A Acronyms and Abbreviations
C
CCO
central controller
H
HVRT
high voltage ride-through
L
LED
light emitting diode
LVRT
low voltage ride-through
M
MPP
maximum power point
MPPT
maximum power point
tracking
P
PID
potential induced
degradation
PLC
power line communication
PV
photovoltaic
R
RCD
residual current device
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W
WEEE
waste electrical and
electronic equipment