HUAWEI SUN2000 Three Phase Inverter User Guide

HUAWEI SUN2000 Three Phase Inverter

Product Information

The HUAWEI SUN2000-(2KTL-6KTL)-L1 is a solar inverter designed for residential and commercial use. It converts the DC power generated by solar panels into AC power that can be used to power electrical devices. The inverter is equipped with various safety features to ensure reliable and efficient operation.

Product Usage Instructions

Overview

• Read the user manual to familiarize yourself with the product information and safety precautions.

Installing the Device

Installation Requirements

• Ensure that there is sufficient space, proper angle, and appropriate mounting hole dimensions for installation.

Installing the Solar Inverter

1. Install the mounting bracket, making sure to avoid drilling holes in water pipes and cables buried in the wall.
2. (Optional) Install the screw for locking the DC switch.
3. Install the solar inverter onto the mounting bracket.
4. (Optional) Install an anti-theft lock. Use a lock suitable for the lock hole diameter (10 mm) and ensure it is outdoor waterproof.

Connecting Cables

Preparing Cables
Each inverter must be equipped with an AC output switch. Multiple inverters cannot connect to the same AC output switch. Prepare cables based on site requirements.

Installing the PE Cable
Do not connect the neutral wire to the enclosure as a PE cable to avoid electric shocks.

Installing a WLAN Antenna or Smart Dongle
Ensure that the WLAN antenna or Smart Dongle is securely installed. For the Smart Dongle, use a Cat 5e outdoor shielded network cable (outer diameter < 9 mm; internal resistance 1.5 ohms/10 m) and shielded RJ45 connectors.

Notice

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.
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.

Overview

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

Note

• The screw is used to secure the DC switch to prevent accidental startup. The screw is delivered with the solar inverter.
• DC input terminals PV1 and PV2 are controlled by the DC switch.

Installing the Device

Installation Requirements

Installing the Solar Inverter

1. Install the mounting bracket.
   Danger
   Avoid drilling holes in the water pipes and cables buried in the wall.
   Note

   • 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.

2. (Optional) Install the screw for locking the DC switch.

3. Install the solar inverter onto the mounting bracket.

4. (Optional) Install an anti-theft lock.

Note:
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.

Connecting Cables

Preparing Cables

Warning

• 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.

Caution
Each inverter must be equipped with an AC output switch. Multiple inverters cannot connect to the same AC output switch.

Notice:

• 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.

Prepare cables based on site requirements.

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 mm2

When cables are not

crimped: 0.20–1 mm2

| l  four-hole rubber plug: 4–8 mm

l  two-hole rubber

plug: 8–11 mm

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
Do not connect the neutral wire to the enclosure as a PE cable. Otherwise, electric shocks may occur.

NOTE:

• 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.

Installing a WLAN Antenna or Smart Dongle

• 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.

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.

(Optional) 4G Smart Dongle (4G Communication)

• 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.
• 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).

• 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.

Installing the AC Output Power Cable

Notice:
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.

1. Connect the AC output power cable to the AC connector.
   Three-Core Cable (L, N, and PE)
   Note
   The method for connecting a two-core AC output power cable is the same except that the cable is not connected to PE.
   

2. Connect the AC connector to the AC output port. Check the route of the AC output power cable.
   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

Notice:

• Ensure that the PV module output is well insulated to ground.
• 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.
• The DC input voltage of the solar inverter must not exceed maximum input voltage.
• Before installing DC input power cables, label the cable polarities to ensure correct cable connections.
• 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.
   If the PV strings are configured with Smart PV Optimizers, refer to the Smart PV Optimizer Quick Guide to check the cable polarity.

2. Connect DC input power cables.

(Optional) Installing Battery Cables

Danger

• Use insulated tools when connecting cables.
• Connect battery cables with correct polarity. If battery cables are reversely connected, the solar inverter may be damaged.

Assemble the positive and negative connectors by following the instructions in section 3.5 “Installing DC Input Power Cables.”

(Optional) Installing Signal Cables

NOTICE:

• 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 Pin Definitions

scenario: used for connecting to the solar inverters.
2| 485A1| RS485A, RS485 differential signal+
3| 485B2| 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|

485A2

|

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| DI1| 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| DI2| 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

Crimping Three Signal Cable

Connecting Signal Cables

Verifying the Installation

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.

Powering On the System

NOTICE:

• 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.

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.
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

Commissioning

NOTE:

• 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

• 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.
• Method 3: Scan the following QR code and download the latest installation package.

(Optional) Registering an Installer Account

Note:
If you already have an installer account, skip this step.

Creating the first installer account will generate a domain named after the company.

Creating a PV Plant and a Plant Owner

Setting the Physical Layout of Smart PV Optimizers

NOTE:

• 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.

Scenario 1:
Setting on the FusionSolar Server Side (Solar Inverter Connected to the Management System)

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.
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.

NOTE:
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.

Scenario 2:
Setting on the Solar Inverter Side (Solar Inverter Not Connected to the Management System)

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.
   • Log in to the FusionSolar app. On the Device commissioning screen, choose Maintenance > Optimizer layout. The Optimizer layout screen is displayed.
   • 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.

Setting Battery Parameters

NOTE:
If the solar inverter connects to batteries, set battery parameters.

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.

FAQ

Device Commissioning

1. Access Device commissioning.
   • Scenario 1: Your phone is not connected to the Internet.
   • Scenario 2: Your phone is connected to the Internet.
2. Connect to the solar inverter WLAN and log in as installer to access the device commissioning screen.

Resetting the Password

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:
   • 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.
   • Turn on the AC switch, set the DC SWITCH to ON, and wait for about 90s. Ensure that the indicator is blinking green slowly.
   • Turn off the AC switch and set the DC SWITCH to OFF. Wait until all LED indicators on the SUN2000 panel turn off.
   • 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.
3. Reset the password within 10 minutes. (If no operation is performed within 10 minutes, all inverter parameters remain unchanged.)
   • Wait until the indicator blinks green slowly.
   • 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.
   • On the login screen, set a new login password and log in to the app.
4. Set router and management system parameters to implement remote management.

Installation Video

NOTE:
You can scan the QR code below to obtain the installation video.

Customer Service Contact Information

Customer Service Contact

Region| Country| Service Support Email| Phone

Europe

| France|

eu_inverter_support@huawei.com

|

0080033888888

Germany
Spain
Italy
UK
Netherlands
Other countries| For details, see solar.huawei.com.

Asia Pacific

| Australia| eu_inverter_support@huawei.com| 1800046639
Turkey| eu_inverter_support@huawei.com| N/A
Malaysia|

apsupport@huawei.com

| 0080021686868

/1800220036

Thailand

| (+66) 26542662 (charged by local call)
1800290055 (free in Thailand)
China| solarservice@huawei.com| 400-822-9999
Other countries| apsupport@huawei.com| 0060-3-21686868
Japan| Japan| Japan_ESC@ms.huawei.com| 0120258367
India| India| indiaenterprise_TAC@huawei.com| 1800 103 8009
Republic of Korea| Republic of Korea| Japan_ESC@ms.huawei.com| N/A
North America| USA| eu_inverter_support@huawei.com| 1-877-948-2934
Canada| eu_inverter_support@huawei.com| 1-855-482-9343

Latin America

| Mexico|

la_inverter_support@huawei.com

| 018007703456

/0052-442-4288288

Argentina| 0-8009993456
Brazil| 0-8005953456
Chile| 800201866 (only for fixed)
Other countries| 0052-442-4288288

Middle East and Africa

| Egypt|

eu_inverter_support@huawei.com

| 08002229000

/0020235353900

UAE| 08002229000
South Africa| 0800222900
Saudi Arabia| 8001161177
Pakistan| 0092512800019
Morocco| 0800009900
Other countries| 0020235353900

Huawei Technologies Co., Ltd
Huawei Industrial Base, Bantian, Longgang Shenzhen 518129, People’s Republic of China.
solar.huawei.com.

References

• Huawei - Building a Fully Connected, Intelligent World
• 华为智能光伏官网-太阳能光伏发电站解决方案-光伏逆变器
• 华为智能光伏官网-太阳能光伏发电站解决方案-光伏逆变器

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