HUAWEI SUN2000L Single phase Residental Solar Inverter User Guide

HUAWEI SUN2000L Single phase Residental Solar Inverter

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.
2. Before replacing the device, carefully read the SUN2000-(2KTL“6KTL)-L1 User Manual to get familiar with product information and precautions. You can download this document by scanning the QR code.
3. Before replacing the device, check whether the configurations of SUN2000L-(2KTL“5KTL), SUN2000-(2KTL“5KTL)-L0, and SUN2000L-(3KTL-5KTL)-CN can be viewed. If they can be viewed, record the parameter settings for setting or checking parameters after the replacement.
4. Before replacing the device, check whether the cables are long enough. If not, prepare appropriate cables.

SUN2000L-(2KTL–5KTL) Replacement Scenario

Removing SUN2000L-(2KTL–5KTL)

DANGER

• Before removing the original SUN2000, ensure that the DC switch on the SUN2000 and all the switches connected to the SUN2000 are set to OFF. Otherwise, the high voltage of the SUN2000 may result in electric shocks.
• After the SUN2000 is powered off, the remaining electricity and heat may still cause electric shocks and body burns. Therefore, put on protective gloves and dielectric boots and begin operating the SUN2000 with specialized insulation tools five minutes after the power-off.

Removing Cables from SUN2000L-(2KTL–5KTL) for Future Use

1. Power off the SUN2000 to be replaced.
2. Remove the AC connector and remove the AC output power cable from the mating socket for future use.
3. Remove the DC connectors and use a cable cutter to cut off the terminals of DC input power cables. Set the cables aside for future use.

NOTICE

• The DC terminals of SUN2000L-(2KTL–5KTL) must be cut off. If the DC connectors of SUN2000L-(2KTL–5KTL) are directly connected to SUN2000-(2KTL–6KTL)-L1, the SUN2000 may be burnt.
• If the SUN2000 is connected to a smart PV safety box, cut off the DC terminal connected to the PV port on the SUN2000 and do not cut other DC terminals. Put the cables aside for future use.

1. (Optional) Remove the battery connectors, cut off the terminals with a cable cutter, and put the cables aside for future use.
   NOTICE
   

   • The method for removing battery connectors is the same as that for removing the DC connectors.
   • The battery terminals of SUN2000L-(2KTL–5KTL) must be cut off. If the battery connectors of SUN2000L-(2KTL–5KTL) are directly connected to SUN2000-(2KTL–6KTL)-L1, the SUN2000 may be burnt.

2. (Optional) Remove the signal cable connectors from the COM and ALARM ports, and take out the signal cables for future use.

   • If the SUN2000 is connected to a smart PV safety box, cut off the crimping terminal of the signal cables and strip the cables for future use.

3. Disconnect the PE cable and remove the crimped OT terminal. Set the cable aside for future use.

Removing the Mounting Bracket of SUN2000L-(2KTL-5KTL)

1. (Optional) Open the anti-theft lock.
2. Remove the two hex screws.
3. Remove the SUN2000 from the rear panel.

Installing SUN2000-(2KTL–6KTL)-L1

1. (Optional) Install the locking screw for the DC switch.
2. Remove the native hanging kit from SUN2000-(2KTL–6KTL)-L1.
3. Install the hanging kit delivered with **SUN2000-(2KTL–6KTL)-L1. NOTE

**

  * The marking-off template, mounting bracket, and M6x60 expansion bolts delivered with SUN2000-(2KTL–6KTL)-L1 are not used during replacement.
  * Prepare an anti-theft lock suitable for the lock hole diameter (Ф8 mm) and ensure that the lock can be installed successfully. An outdoor waterproof lock is recommended.

4. Install the SUN2000 on the mounting bracket.
5. Tighten screw assemblies.

Installing the PE Cable for SUN2000-(2KTL–6KTL)-L1

NOTE

• Before connecting cables, ensure that the DC switch on the SUN2000 and all the switches connected to the SUN2000 are set to OFF. Otherwise, the high voltage of the SUN2000 may result in electric shocks.
• It is recommended that silica gel or paint be applied around the ground terminal after the PE cable is connected.
• It is recommended that you connect the PE cable to the right ground point and reserve the other ground point.

**Installing the AC Output Power Cable to SUN2000-(2KTL–6KTL)-L1

**

Installing DC Input Power Cables for SUN2000-(2KTL–6KTL)-L1

NOTICE

1. Ensure that the PV module output is well insulated to ground.
2. Use the positive and negative Staubli MC4 metal terminals and DC connectors supplied with the SUN2000. 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 SUN2000 shall not exceed the maximum input voltage under any circumstance.
4. Before installing DC input power cables, label the cable polarities to ensure correct cable connections.
5. If the polarities of the DC input power cables are reversed, do not operate the DC switch or the positive/negative connector immediately. Failing to do so may cause device damage, which is not covered under warranty. Wait until the night when solar irradiance declines and the PV string current drops to below 0.5 A. Then set the DC switch to OFF, remove the positive and negative connectors, and correct the polarities of the DC input power cables.
6. Assemble DC connectors.
7. Install the DC input power cables.

NOTE

• If the original DC input power cables are not long enough, add DC input extension cables.

(Optional) Installing  Battery Cables for SUN2000-(2KTL–6KTL)-L1

NOTE

• Assemble the positive and negative connectors by following the instructions in section 1.5 “Installing DC Input Power Cables.”

Installing a WLAN Antenna

(Optional) Installing Signal Cables for SUN2000-(2KTL–6KTL)-L1

• Ensure that the protective layer of the cable is inside the connector, cut off excess core wires from the protection layer, totally insert the exposed core wire into the cable hole, and securely connect the cable.

1. Communications port pin definitions of SUN2000L–(2KTL–5KTL)

COM Port Pin Definitions

port of the smart power sensors.
2| 485A1| RS485A, RS485 differential signal+
3| 485B2| RS485B, RS485 differential signal–| Connects to the RS485 signal port of batteries.
4| 485A2| RS485A, RS485 differential signal+
5| EN–| Enable signal–| Connects to the enable signal port of batteries.
6| EN+| Enable signal+
7| –| –| –
8| PE| Ground| Connects to the shielding layer of cables.

ALARM Port Pin Definitions

port of smart PV safety boxes.
4| 485A3| RS485A, RS485 differential signal+
5| 12V–| Negative electrode of the 12 V power supply port| Connects to the power port of smart PV safety boxes.
6| 12V+| Positive electrode of the 12 V power supply port
7| –| –| –
8| PE| Ground point on the shield layer| Connects to the shielding layer of cables.

1. Connect the signal cables to SUN2000-(2KTL–6KTL)-L1.

COM Port Pin Definitions

differential signal–

| Connects to the RS485– signal port of batteries, smart power sensors, and smart PV safety boxes. When batteries, smart power sensors, and smart PV safety boxes coexist, they share the 485B2–ports.
4| 485A2| RS485A, RS485

differential signal+

| Connects to the RS485+ signal port of batteries, smart power sensors, and smart PV safety boxes. When batteries, smart power sensors, and smart PV safety boxes coexist, they share the 485A2+ ports.
5| GND| Enable signal–/12V–| Connects to the enable signal GND of batteries and the 12 V GND of smart PV safety boxes.
6| EN+| Enable signal+/12V+| Connects to the enable signal positive electrode of batteries and the 12 V positive electrode of smart PV safety boxes.
7| –| –| –
8| –| –| –

Crimping Two Signal Cables

Crimping Three Signal Cables

Connecting Signal Cables (to the Smart PV Safety Boxes)

Connecting Signal Cables (to the Smart Power Sensors and Batteries)

Connecting Signal Cables (to the Smart Power Sensors, Batteries, and Smart PV Safety Boxes)

**Checking the Installation of SUN2000-(2KTL–6KTL)-L1 and Powering  On

the SUN2000**

Post-Installation Check

correctly and securely.
8| Unused terminals and ports are covered by watertight caps.
9| The installation space is proper, and the installation environment is clean and tidy.

Powering On the SUN2000

NOTE

• Before turning on the AC switch between the SUN2000 and the power grid, check that the AC voltage is within the specified range using a multimeter.
• If the SUN2000 is connected to a 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 SUN2000 will shut down and start again.
• If the SUN2000 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 SUN2000 will be already connected to the grid. Therefore, it will shut down and start and connect to the grid again.

1. If a battery is connected, turn on the battery switch.
2. Turn on the AC switch between the SUN2000 and the grid.
3. If there is a DC switch between PV strings and the SUN2000, turn on the DC switch.
4. Turn on the DC switch at the bottom of the SUN2000.

Commissioning SUN2000 (2KTL–6KTL)-L1

1. Downloading the App Search for FusionSolar in Huawei AppGallery to download and install the latest installation package. Method 2: Visit https://solar.huawei.com using your mobile phone browser and download the latest installation package.
2. Method 3: Scan the QR code to download and install the latest installation package.
3. Access Device commissioning.
   • Scenario 1: Your phone is not connected to the Internet.
   • Scenario 2: Your phone is connected to the Internet.
4. Connect to the solar inverter WLAN and log in as installer to access the device commissioning screen.
5. Choose Maintenance > Device replacement, select the type of the original device, and complete the replacement.
6. Tap Quick settings to complete the deployment of the new SUN2000 as prompted.
7. (Optional) If you need to set other parameters, tap Settings.
8. Log in to the SmartPVMS and navigate to the Device Management page to replace the SN of the old SUN2000 with the SN of the new SUN2000. The historical data of the old SUN2000 will be inherited.

NOTE

• You can also complete historical data inheritance in the FusionSolar app. Log in to the app and choose Device management > Device Replacement to replace the SN of the old SUN2000 with the SN of the new SUN2000. The historical data of the old SUN2000 will be inherited.

SUN2000-(2KTL-5KTL)-L0 and SUN2000L-(3KTL-5KTL)-CN Replacement Scenario

Removing SUN2000-(2 2.1 KTL-5KTL)-L0 or SUN2000L-(3KTL-5KTL)-CN

• Before removing the original SUN2000, ensure that the DC switch on the SUN2000 and all the switches connected to the SUN2000 are set to OFF. Otherwise, the high voltage of the SUN2000 may result in electric shocks.
• After the SUN2000 is powered off, the remaining electricity and heat may still cause electric shocks and body burns. Therefore, put on protective gloves and dielectric boots and begin operating the SUN2000 with specialized insulation tools five minutes after the power-off.

Removing Cables from SUN2000-(2KTL-5KTL)-L0 or SUN2000L-(3KTL-5KTL)-CN for Future Use

1. Power off the SUN2000 to be replaced.
2. Remove the AC connector for future use.
3. Remove the DC connectors and use a cable cutter to cut off the terminals of DC input power cables. Set the cables aside for future use.
   • The DC terminals of SUN2000-(2KTL–5KTL)- L0 or SUN2000L-(3KTL-5KTL)-CN must be cut off. If the DC connectors of SUN2000- (2KTL–5KTL)-L0 or SUN2000L-(3KTL-5KTL)- CN are directly connected to SUN2000- (2KTL–6KTL)-L1, the SUN2000 may be burnt.
   • If the SUN2000 is connected to a smart PV safety box, cut off the DC terminal connected to the PV port on the SUN2000 and do not cut other DC terminals. Put the cables aside for future use.
4. (Optional) Remove the Smart Dongle for future use.
5. (Optional) Remove the signal cable connector from the COM port, and take out the signal cable for future use.
6. Disconnect the PE cable and remove the crimped OT terminal. Set the cable aside for future use.

Removing the Mounting Bracket of SUN2000-(2KTL-5KTL)-L0 or SUN2000L-(3KTL- 5KTL)-CN

NOTE

• See section 1.1 “Removing the Mounting Bracket of SUN2000L-(2KTL-5KTL)”.

Installing SUN2000-(2KTL–6KTL)-L1

NOTE

• See section 1.2 “Installing SUN2000-(2KTL–6KTL)-L1”.

Completing  Electrical Connections of SUN2000-(2KTL–6KTL)-L1

• Before connecting cables, ensure that the DC switch on the SUN2000 and all the switches connected to the SUN2000 are set to OFF. Otherwise, the high voltage of the SUN2000 may result in electric shocks.

1. Install the PE cable.
   note

2. • See section 1.3 “Installing the PE Cable for SUN2000-(2KTL–6KTL)-L1”.

3. Install a WLAN antenna or Smart Dongle.

(Optional) 4G Smart Dongle

WLAN Antenna

1. Connect the AC connector to the AC output port.
   note
   See section 1.4 “Installing the AC Output Power Cable to SUN2000-(2KTL–6KTL)-L1”.

2. Install DC input power cables.

notice

1. Ensure that the PV module output is well insulated to ground.
2. Use the positive and negative Staubli MC4 metal terminals and DC connectors supplied with the SUN2000. 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 SUN2000 shall not exceed the maximum input voltage under any circumstance.
4. Before installing DC input power cables, label the cable polarities to ensure correct cable connections.
5. If the polarities of the DC input power cables are reversed, do not operate the DC switch or the positive/negative connector immediately. Failing to do so may cause device damage, which is not covered under warranty. Wait until the night when solar irradiance declines and the PV string current drops to below 0.5 A. Then set the DC switch to OFF, remove the positive and negative connectors, and correct the polarities of the DC input power cables.

Assembling DC Connectors

Installing DC Input Power Cables

• If the original DC input power cables are not long enough, add DC input extension cables.
• (Optional) Install signal cables.
  • Ensure that the protective layer of the cable is inside the connector, cut off excess core wires from the protection layer, totally insert the exposed core wire into the cable hole, and securely connect the cable.

COM Port Pin Definitions of SUN2000–(2KTL–5KTL)-L0

port of the smart power sensors.
2| 485A1| RS485A, RS485 differential signal+
3| 485B2| RS485B, RS485 differential signal–| Connects to the RS485 signal

port of smart PV safety boxes.

4| 485A2| RS485A, RS485 differential signal+
5| 12V–| Negative electrode of the 12 V power supply port
6| 12V+| Positive electrode of the 12 V power supply port
7| –| –| –
8| PE| Ground| Connects to the shielding layer

of cables.

COM Port Pin Definitions of SUN2000–(2KTL–6KTL)-L1

differential signal–

| Connects to the RS485– signal port of batteries, smart power sensors, and smart PV safety boxes. When smart power sensors and smart PV safety boxes coexist, they share the 485B2– ports.
4| 485A2| RS485A, RS485

differential signal+

| Connects to the RS485+ signal port of batteries, smart power sensors, and smart PV safety boxes. When smart power sensors and smart PV safety boxes coexist, they share the 485A2+ ports.
5| GND| 12 V–| Connects to the 12 V negative electrode of smart PV safety boxes.
6| EN+| 12V+| Connects to the 12 V positive electrode of smart PV safety boxes.
7| –| –| –
8| –| –| –

Crimping Two Signal Cables

Connecting Signal Cables (to the Smart Power Sensors and Smart PV Safety Boxes)

**Checking the Installation of SUN2000-(2KTL–6KTL)-L1 and Powering On

the SUN2000**

NOTE

• See section 1.9 “Checking the Installation of SUN2000-(2KTL–6KTL)-L1 and Powering On the SUN2000 “.

Commissioning SUN2000-(2KTL–6KTL)-L1

NOTE

• See section 1.10 “Commissioning SUN2000-(2KTL–6KTL)-L1”.

HUAWEI TECHNOLOGIES CO., LTD. Huawei Industrial Base, Bantian, Longgang, Shenzhen Post code: 518129 solar.huawei.com

References

• 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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