Huawei SUN2000 3,6KTL-L1 User manual

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HUAWEI TECHNOLOGIES CO., LTD.
SUN2000-(2KTL-6KTL)-L1
Quick Guide
Issue: 11
Part Number: 31500DQD
Date: 2023-11-10

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1. 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. You can download this document by scanning the
QR code.
2. Before installing the device, closely read the user manual to get familiar
with product information and safety precautions.
Copyright © Huawei Technologies Co., Ltd. 2023.
All rights reserved.
1Overview
•a: The screw is used to secure the DC switch to prevent accidental startup. The screw is
delivered with the solar inverter.
•b: DC input terminals PV1 and PV2 are controlled by the DC switch.
(1) LED indicators
(2) Front panel
(3) Hanging kit
(4) Mounting bracket
(5) Heat sink
(6) Ventilation valve
(7) Screw hole for the DC
switcha
(8) DC
switchb(DC SWITCH)
(9) DC input terminals (PV1+/PV1
–)
(10) DC input terminals (PV2+/PV2
–)
(11) Battery terminals (BAT+/BAT
–)
(12) Smart Dongle port (4G/FE)
(13) Antenna port (ANT)
(14) COM port (COM)
(15) AC output port (AC)
(16) Ground point
3. Only certified electricians are allowed to operate the device. Operation personnel must wear
proper personal protective equipment (PPE).
4. Before installing the device, check that the package contents are intact and complete against
the packing list. If any damage is found or any component is missing, contact your dealer.
5. The device damage caused by the violation of instructions in this document is not covered
under warranty.
6. The cable colors involved in this document are for reference only. Select cables in accordance
with local cable specifications.

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3
Space Angle
2Installing the Device
Mounting Hole Dimensions
Installation Requirements
2.1
Avoid drilling holes in the water pipes and cables buried in the wall.
1. Install the mounting bracket.
Installing the Solar Inverter
2.2

3
Level
2. (Optional) Install the screw for locking the DC switch.
•M6x60 expansion bolts are delivered with the solar inverter. If the length and number of the
bolts do not meet installation requirements, prepare M6 stainless steel expansion bolts by
yourself.
•The expansion bolts delivered with the solar inverter are mainly used for solid concrete walls.
For other types of walls, prepare bolts by yourself and ensure that the wall meets the load
bearing requirements of the solar inverter.
•In residential areas, do not install the solar inverter on drywalls or walls made of similar
materials which have a weak sound insulation performance because the noise generated by
the solar inverter is noticeable.
•Loosen the nut, flat washer, and spring washer of the expansion bolt at the bottom.
3. Install the solar inverter onto the mounting bracket. 4. (Optional) Install an anti-theft lock.
Prepare an anti-theft lock by yourself. The lock should be suitable for the lock hole diameter
(Ф10 mm) so that it can be installed successfully. An outdoor waterproof lock is recommended.

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Preparing Cables
3.1
•To ensure that the inverter can be safely disconnected from the power grid when an
exception occurs, connect an AC switch to the AC side of the inverter. Select an appropriate
AC switch in accordance with local industry standards and regulations.
•Connect cables in accordance with the local installation laws and regulations.
•Before connecting cables, ensure that the DC switch of the solar inverter and all the switches
connected to it are set to OFF. Otherwise, the high voltage produced by the solar inverter
may cause electric shocks.
3Connecting Cables
No.
Cable
Type
Conductor Cross
-
Sectional Area Range
Outer Diameter
1
Protective earthing
(PE) cable
Single
-core outdoor
copper cable
4
–10 mm2
N/A
2
AC output power
cable
Two
-core (L and N) or
three
-core (L, N, and
PE) outdoor copper
cable
4
–6 mm2
10
–21 mm
3
DC input power
cable and
(optional) battery
cable
Standard outdoor PV
cable in the industry
4
–6 mm2
5.5
–9 mm
4
(Optional) Signal
cable
Outdoor shielded
twisted pair cable
When cables are
crimped:
0.20–0.35
mm
2
When
cables are not
crimped:
0.20–1mm2
⚫four-
hole rubber
plug: 4–8 mm
⚫two-
hole rubber
plug: 8–11 mm
Prepare cables based on site requirements.
•Do not connect loads between the inverter and the AC switch that directly connects to the
inverter. Otherwise, the switch may trip by mistake.
•If an AC switch is used with specifications beyond local standards, regulations, or Huawei's
recommendations, the switch may fail to turn off in a timely manner in case of exceptions,
causing serious faults.
Each inverter must be equipped with an AC output switch. Multiple inverters cannot connect
to the same AC output switch.

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No.
Component
Description
Source
1
AC switch
Recommended: a
single
-phase AC circuit
breaker
Rated voltage ≥ 250 V AC
Rated current:
•
16 A (SUN2000-2KTL-L1)
•
25 A (SUN2000-3KTL-L1 and SUN2000-
3.68KTL-L1)
•
32 A (SUN2000-4KTL-L1, SUN2000-
4.6KTL-L1, SUN2000-5KTL-L1, and
SUN2000-6KTL-L1)
Installing the PE Cable
3.2
Ground
point
Do not connect the neutral wire to the enclosure as a PE cable. Otherwise, electric shocks may
occur.
•The PE point at the AC output port is used only as a PE equipotential point, and cannot
substitute for the PE point on the enclosure.
•Silica gel or paint must be applied around the ground terminal after the PE cable is connected.
•It is recommended that the right ground point be used for grounding. The other ground point
is reserved.
•If FE communication is used, install a WLAN-FE Smart Dongle (SDongleA-05). You need to
purchase the WLAN-FE Smart Dongle by yourself.
•If 4G communication is used, install a 4G Smart Dongle (SDongleA-03). You need to
purchase the 4G Smart Dongle by yourself.
Installing a WLAN Antenna or Smart Dongle
3.3
Smart Dongle port (4G/FE)
Antenna port (ANT)

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Ensure that the WLAN antenna is
installed securely.
WLAN Antenna (WLAN Communication)
(Optional) WLAN-FE Smart Dongle (FE Communication)
You are advised to use a Cat 5e outdoor shielded network cable (outer diameter < 9 mm;
internal resistance ≤ 1.5 ohms/10 m) and shielded RJ45 connectors.
4G/FE

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•For details about how to operate the WLAN-FE Smart Dongle SDongleA-05, see
SDongleA-
05 Smart Dongle Quick Guide (WLAN-FE) .
•For details about how to operate the 4G Smart Dongle SDongleA-03, see
SDongleA-03
Quick Guide (4G) .
•The quick guide is delivered with the Smart Dongle. You can download them by scanning
the QR code below.
WLAN-FE 4G
•Install the SIM card in the arrow direction.
•When reinstalling the cover of the Smart Dongle, ensure that the buckle springs back in
place (you can hear a click).
•If your Smart Dongle is configured with a SIM card, you do not need to install the SIM card.
The configured SIM card can be used only on the Smart Dongle.
•If your Smart Dongle is not equipped with a SIM card, prepare a standard SIM card (size: 25
mm x 15 mm) with the capacity greater than or equal to 64 KB.
(Optional) 4G Smart Dongle (4G Communication)
Installing the AC Output Power Cable
3.4
Ensure that the protective layer of the AC output power cable is inside the connector, that the
core wires are totally inserted into the cable hole, and that the cable is connected securely.
Failing to do so may cause device malfunction or damage.

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1. Connect the AC output power cable to the AC connector.
Three-Core Cable (L, N, and PE)
Click
2. Connect the AC connector to the AC output port. Check the route of the AC output power cable.
AC output port (AC)
•The method for connecting a two-core AC output power cable is the same except that the
cable is not connected to PE.
•Strip the insulation layers of the AC output power cable by the recommended length (12–16
mm) to ensure that the cable conductors are completely inside the conductor insertion
points and no insulation layer is pressed into the conductor insertion points. Otherwise, the
device may fail to run properly or be damaged during operation.

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Plug insert
To remove the AC connector,
perform the operations in
reverse order of installing the
AC connector. Then, remove
the plug insert, as shown in
the following figure.
Installing DC Input Power Cables
3.5
1. Ensure that the PV module output is well insulated to ground.
2. Use the Staubli MC4 positive and negative metal terminals and DC connectors supplied with
the solar inverter. Using incompatible positive and negative metal terminals and DC connectors
may result in serious consequences. The caused device damage is not covered under warranty.
3. The DC input voltage of the solar inverter must not exceed maximum input voltage.
4. Before installing DC input power cables, label the cable polarities to ensure correct cable
connections.
5. If DC input power cables are reversely connected, do not operate the DC switch as well as
positive and negative connectors immediately. Failing to do so may cause device damage,
which is not covered under warranty. Wait until the solar irradiance declines at night and the
PV string current reduces to below 0.5 A, and then turn off the DC switch and remove the
positive and negative connectors. Correct the string polarity before reconnecting the PV string
to the solar inverter.
1. Assemble DC connectors.
Click
Positive metal terminal
Negative metal terminal
Ensure that the cable cannot
be pulled out after being
crimped.
Positive connector
Negative
connector
Use the wrench shown
in the figure to tighten
the locking nut. When
the wrench slips during
the tightening, the
locking nut has been
tightened.
Ensure that cable
polarities are correct.
PV-CZM-22100/19100
PV-MS-HZ
Open-end wrench
If the PV strings are configured with Smart PV Optimizers, refer to the Smart PV Optimizer
Quick Guide to check the cable polarity.

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DC input terminals
Click
Pull the DC input power
cable back to ensure that
it is connected securely.
2. Connect DC input power cables.
(Optional) Installing Battery Cables
3.6
Properly keep the
watertight caps.
Pull the battery cable
back to ensure that it is
connected securely.
Battery terminals (BAT+/BAT–)
Assemble the positive and negative connectors by following the instructions in section 3.5
"Installing DC Input Power Cables."
•Use insulated tools when connecting cables.
•Connect battery cables with correct polarity. If battery cables are reversely connected, the
solar inverter may be damaged.
Click

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(Optional) Installing Signal Cables
3.7
•When laying out a signal cable, separate it from power cables to avoid strong signal
interference.
•Ensure that the protective layer of the cable is inside the connector, that excess core wires
are cut off from the protection layer, that the exposed core wire is totally inserted into the
cable hole, and that the cable is connected securely.
•Block the unused cable hole using a cap and tighten the cable gland.
•If more than one signal cables are required, ensure that they have the same outer diameter.
COM port (COM)
COM Port Pin Definitions
No.
Label
Definition
Description
1
485
B
1
RS485B, RS485 differential signal–
Solar inverters cascading scenario: used for
connecting to the solar inverters.
2
485
A
1
RS485A, RS485 differential signal+
3
485
B
2
RS485B, RS485 differential signal–
Used for connecting to the RS485 signal ports of
the battery and power meter. When both battery
and power meter are configured, they need be
crimped
to the 485B2 and 485A2 ports.
4
485
A
2
RS485A, RS485 differential signal+
5
GND
GND of the enable
signal/12V/DI1/DI2
Used for connecting to GND of the enable
signal/12V/DI1/DI2.
6
EN+
Enable
signal+/12V+
Used for connecting to the enable signal of the
battery and the 12V positive signal.
7
DI
1
Digital
input signal 1+
Used to connect to the DI1 positive signal. It can be
used for connecting to the DRM0 scheduling signal
or serve as a port for the rapid shutdown signal.
8
DI
2
Digital
input signal 2+
Used to connect to the DI2 positive signal. It can
serve as a port for the feedback signal of the
Backup Box.
Crimping Two Signal Cables

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Crimping Three Signal Cables
Connecting Signal Cables
Number of Communications
Cables
Click
4Verifying the Installation
No.
Acceptance Criteria
1
The solar inverter is installed correctly and securely.
2
The WLAN antenna is installed correctly and securely.
3
Cables are routed properly as required by the customer.
4
Cable ties are evenly distributed and no burr exists.
5
The PE cable is connected correctly and securely.
6
The DC switch and all the switches connected to the solar inverter are set to the OFF
position.
7
The AC output power cable, DC input power cables, and signal cable are connected correctly
and securely.
8
Unused terminals and ports are locked by watertight caps.
9
The installation space is proper, and the installation environment is clean and tidy.

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•Before turning on the AC switch between the solar inverter and the power grid, check that the
AC voltage is within the specified range using a multimeter set to the AC position.
•If the solar inverter is connected to an LG battery, turn on the DC switch within 1 minute after
turning on the AC switch. If you turn on the DC switch after more than 1 minute, the solar
inverter will shut down and start again.
1. If a battery is connected, turn on the battery switch.
2. Turn on the AC switch between the solar inverter and the power grid.
3. (Optional) Remove the screw for locking the DC switch.
4. Turn on the DC switch (if any) between the PV string and the solar inverter.
5. Turn on the DC switch at the bottom of the solar inverter.
6. Observe the LED indicators to check the operating status of the solar inverter.
5Powering On the System
Type
Status (Blinking at long intervals:
On for 1s and then Off for 1s;
Blinking at short Intervals: On for
0.2s and then Off for 0.2s)
Meaning
Running
indication
LED1
LED2
N/A
Steady green
Steady green
The solar inverter is operating in grid
-
tied
mode.
Blinking green
at long
intervals
Off
The DC is on and the AC is off.
Blinking green
at long
intervals
Blinking green at
long intervals
Both the DC and AC are on, and the solar
inverter is not exporting power to the
power grid.
Off
Blinking green at
long intervals
The DC is off and the AC is on.
Off
Off
Both the DC and AC are off.
Blinking red at
short intervals
N/A
There is a DC environmental alarm, such
as an alarm indicating that High String
Input Voltage, String Reverse Connection,
or Low Insulation Resistance.
N/A
Blinking red at
short intervals
There is an AC environmental alarm, such
as an alarm indicating Grid
Undervoltage
,
Grid Overvoltage, Grid
Overfrequency, or
Grid
Underfrequency.
Steady red
Steady red
Fault.

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Type
Status (Blinking at long intervals:
On for 1s and then Off for 1s;
Blinking at short Intervals: On for
0.2s and then Off for 0.2s)
Meaning
Communication
indication
LED3
N/A
Blinking green at short intervals
Communication is in progress.
Blinking green at long intervals
A mobile phone is connected to the solar
inverter.
Off
There is no communication.
Device
replacement
indication
LED1
LED2
LED3
N/A
Steady red
Steady red
Steady red
The solar inverter hardware is faulty. The
solar inverter needs to be replaced.
6Commissioning
•The screenshots are for reference only. The actual screens may vary.
•Obtain the initial password for connecting to the solar inverter WLAN from the label on the
side of the solar inverter.
•Set the password at the first login. To ensure account security, change the password
periodically and keep the new password in mind. Not changing the password may cause
password disclosure. A password left unchanged for a long period of time may be stolen or
cracked. If a password is lost, devices cannot be accessed. In these cases, the user is liable for
any loss caused to the PV plant.
Downloading the App
6.1
Method 1: Search for FusionSolar on Huawei AppGallery and download the latest installation
package.
Method 2: Access https://solar.huawei.com using the mobile phone browser and download the
latest installation package.
FusionSolar
Method 3: Scan the following
QR code and download the
latest installation package.

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If you already have an installer account, skip this step.
Creating the first installer account will generate a domain named after the company.
(Optional) Registering an Installer Account
6.2
To create multiple
installer accounts for a
company, log in to the
FusionSolar App and tap
Add User to create an
installer account.
Installer
xxx

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•If Smart PV Optimizers are configured for PV strings, ensure that the Smart PV Optimizers have
been successfully connected to the solar inverter before performing the operations in this
section.
•Check that the SN labels of Smart PV Optimizers are correctly attached to the physical layout
template.
•Take and save a photo of the physical layout template. Place the template on a flat surface.
Keep your phone parallel to the template and take a photo in landscape mode. Ensure that the
four positioning points in the corners are in the frame. Ensure that each QR code is attached
within the frame.
•For details about the physical layout of Smart PV Optimizers, see FusionSolar App Quick Guide .
Creating a PV Plant and a Plant Owner
6.3
Setting the Physical Layout of Smart PV Optimizers
6.4
1. Tap the plant name on the Home screen to access the plant screen. Select layout, tap
and upload the physical layout template photo of the PV plant as prompted.
Scenario 1: Setting on the FusionSolar Server Side (Solar Inverter Connected to
the Management System)
•In the quick settings, the grid
code is set to N/A by default
(automatic startup is not
supported). Set the grid code
based on the area where the
PV plant is located.
•For details, see the
FusionSolar App Quick Guide .
You can scan the QR code to
download the quick guide.

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2. Log in to https://intl.fusionsolar.huawei.com to access the WebUI of the FusionSolar Smart
PV Management System. On the Home page, click the plant name to go to the plant page.
Select layout. Choose Generate layout, and create a physical layout as prompted. You can
also manually create a physical location layout.
You can also upload the physical layout template photo on the WebUI as follows: Log in to
https://intl.fusionsolar.huawei.com to access the WebUI of the FusionSolar Smart PV
Management System. On the Home page, click the plant name to go to the plant page. Select
layout. Choose Click to Upload, and upload the physical layout template photo.
a. Log in to the FusionSolar app. On the Device commissioning screen, choose
Maintenance > Optimizer layout. The Optimizer layout screen is displayed.
b. Tap the blank area. The Identify image and Add PV modules buttons are displayed. You
can use either of the following methods to perform operations as prompted:
•Method 1: Tap Identify image and upload the physical layout template photo to
complete the optimizer layout. (The optimizers that fail to be identified need to be
manually bound.)
•Method 2: Tap Add PV modules to manually add PV modules and bind the optimizers
to the PV modules.
1. If the solar inverter is not connected to the FusionSolar Smart PV Management System,
access the Device commissioning screen (Refer to 7.1 Device Commissioning.) on the
FusionSolar app to set the physical layout of Smart PV Optimizers.
Scenario 2: Setting on the Solar Inverter Side (Solar Inverter Not Connected to
the Management System)

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1. Log in to the FusionSolar app and choose My >
Device commissioning. The Device commissioning
screen (Refer to 7.1 Device Commissioning.) is
displayed.
2. Choose Power adjustment > Battery control and set
battery parameters, including Charge from grid,
Control mode (Fully fed to grid,TOU(Time-of-use),
Maximum self-consumption), and so on.
If the solar inverter connects to batteries, set battery parameters.
Setting Battery Parameters
6.5
1. Access Device commissioning.
Device Commissioning
7.1
Scenario 1: Your phone is not
connected to the Internet.
Scenario 2: Your phone is
connected to the Internet.
7FAQ
When your phone is
connected to the
Internet, Device
commissioning is not
displayed after you tap
....

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2. Connect to the solar inverter WLAN and log in as installer to access the device commissioning
screen.
Resetting the Password
7.2
8Installation Video
You can scan the QR code below to obtain the installation video.
1. Ensure that the SUN2000 connects to the AC and DC power supplies at the same time.
Indicators and are steady green or blinking slowly for more than 3 minutes.
2. Perform the following operations within 4 minutes:
a. Turn off the AC switch and set the DC SWITCH at the bottom of the SUN2000 to OFF. If the
SUN2000 connects to batteries, turn off the battery switch. Wait until all the LED indicators
on the SUN2000 panel turn off.
b. Turn on the AC switch, set the DC SWITCH to ON, and wait for about 90s. Ensure that the
indicator is blinking green slowly.
c. Turn off the AC switch and set the DC SWITCH to OFF. Wait until all LED indicators on the
SUN2000 panel turn off.
d. Turn on the AC switch and set the DC SWITCH to ON. Wait until all indicators on the
SUN2000 panel blink and turn off 30 seconds later.
a. Wait until the indicator blinks green slowly.
b. Obtain the initial WLAN hotspot name (SSID) and initial password (PSW) from the label
on the side of the SUN2000 and connect to the SUN2000 on the app.
c. On the login screen, set a new login password and log in to the app.
3. Reset the password within 10 minutes. (If no operation is performed within 10 minutes, all
inverter parameters remain unchanged.)
4. Set router and management system parameters to implement remote management.