Page 1
SUN2000-(3.8KTL-11.4KTL)-USL0 User Manual Issue Date 2018-05-21 HUAWEI TECHNOLOGIES CO., LTD.
Page 2
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"...
SUN2000-7.6KTL-USL0, SUN2000-9KTL-USL0, SUN2000-10KTL-USL0, and SUN2000-11.4KTL-USL0 (SUN2000 for short) in terms of installation, electrical connections, commissioning, maintenance, and troubleshooting. Understand the safety information and get familiar with the SUN2000 functions and features before installing and operating the SUN2000. Intended Audience This document is intended for: ...
Page 6
7 Operations on the Local FusionHome App ................66 7.1 App Overview ................................66 7.2 Downloading and Installing the App .......................... 68 7.3 Connecting to a SUN2000 WiFi Network ........................69 7.4 App Operations by the Installer ..........................73 7.4.1 Logging In to the App .............................. 73 7.4.2 Querying the Device Information ..........................
Page 7
9 Handling the SUN2000 ......................152 9.1 Removing the SUN2000 ............................152 9.2 Packing the SUN2000 ............................... 152 9.3 Disposing of the SUN2000 ............................152 10 Technical Specifications ......................153 A Grid Codes..........................160 B Acronyms and Abbreviations ....................162...
Huawei. Huawei will 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: Damage during transportation ...
Page 9
Installation Never power on the SUN2000 during installation. Ensure that the SUN2000 is not connected to a power supply or powered on before finishing installation. To allow proper heat dissipation and installation, maintain appropriate clearances...
Page 10
Do not remove the terminals and ports at the bottom of the SUN2000. Electrical Connections Before connecting cables, ensure that the SUN2000 is secured in position and not damaged in any way. Otherwise, electric shock or fire may occur. ...
Page 11
If the SUN2000 is faulty, contact your supplier. The SUN2000 can be powered on only after all faults are rectified. Failing to do so may escalate faults or damage the device. Observe ESD precautions and wear ESD gloves during maintenance.
Product Overview 2.1 Product Introduction Function The SUN2000 is a single-phase grid-tied PV string inverter that converts the DC power generated by PV strings into AC power and feeds the power into the power grid. Models This document involves the following product models: ...
Page 13
Design code L0: residential Networking Application The SUN2000 applies to a residential rooftop grid-tied system. Typically, a grid-tied system consists of the PV string, grid-tied inverter, power distribution unit (PDU), and electricity meter. Figure 2-2 Networking application (dashed boxes indicate optional components) ...
Page 14
SUN2000-(3.8KTL-11.4KTL)-USL0 User Manual 2 Product Overview Supported Power Grids The SUN2000 supports low-voltage power grids. The following power grids are in L1/L2/N mode. The output mode needs to be set to L1/L2/N. To set the output mode, choose Grid-connect config > Expert > Grid parameters on the Home screen of the FusionHome app.
Page 16
The DC is on and the at long intervals SUN2000 has no output in backup state. Both the DC and AC are off, or the SUN2000 is in Low Power Consumption mode. Low Power Consumption mode means that the monitoring system of the SUN2000 is hibernating.
Page 17
Blinking green at long intervals (on A mobile phone is connected for 1s and then off for 1s) to the SUN2000. No communication. Port Description Figure 2-6 Bottom of the SUN2000-3.8KTL-USL0 Component Component DC switch Antenna port Battery cable hole...
SUN2000-(3.8KTL-11.4KTL)-USL0 User Manual 2 Product Overview 2.3 Label Description Enclosure Labels Table 2-3 describes the labels on the SUN2000 enclosure and their meanings. Table 2-3 Label description Label Name Meaning Electric shock The SUN2000 has a voltage of 500 warning V.
Page 21
User Manual 2 Product Overview Label Name Meaning Weight label The SUN2000 is heavy and needs to be carried by multiple persons. The labels are for reference only. Nameplate Figure 2-9 Nameplate of the SUN2000-3.8KTL-USL0 (1) Trademark and product model...
Surge protection is supported on both the DC and AC sides. The SUN2000 uses a battery port to connect to batteries which are used to store the surplus power produced by PV strings and not required by local loads. To meet peak power consumption requirements and maximize benefits, the power stored in batteries can be exported to the power grid based on the load condition.
Page 23
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 controls optimizers to track the maximum power point to maximize the PV string output.
Keep the storage temperature at –30° C to +60° C and the humidity at 5%–95% RH. The SUN2000 should be stored in a clean and dry place and be protected from dust and water vapor corrosion. A maximum of 10 SUN2000s can be stacked. To avoid personal injury or device damage, stack SUN2000s with caution to prevent them from falling over.
Before unpacking the SUN2000, check the outer packing materials for damage, such as holes and cracks, and check the SUN2000 model. If any damage is found or the SUN2000 model is not what you requested, do not unpack the product and contact your supplier as soon as possible.
The SUN2000 is protected to TYPE 4X/IP65 and can be installed indoors or outdoors. Do not install the SUN2000 in a place where people are likely to come into contact with its enclosure and heat sinks, because these parts are hot during operation.
Page 29
The SUN2000 can be wall-mounted or support-mounted. The installation angle requirements are as follows: Install the SUN2000 vertically or at a maximum back tilted angle of 15 degrees to facilitate heat dissipation. Do not install the SUN2000 at forward tilted, excessively back tilted, side tilted, horizontal, or upside down positions.
SUN2000-(3.8KTL-11.4KTL)-USL0 User Manual 4 System Installation The example used in this document describes a frame post installation of the SUN2000. Procedure Step 1 Determine the positions for drilling holes using the marking-off template. Level the positions of mounting holes using a level, and mark the positions with a marker.
Figure 4-11 Securing a mounting bracket ----End 4.5 Installing the SUN2000 Procedure Step 1 Hold the handles on both sides of the SUN2000, lift the SUN2000 from the packing case, and move it to the installation position. Issue 01 (2018-05-21) Huawei Proprietary and Confidential...
Page 38
Do not use the wiring terminals and ports at the bottom to support any weight of the SUN2000. When you need to temporally place the SUN2000 on the ground, use foam, paper or other protective materials to prevent damage to its enclosure. Figure 4-12 Moving a SUN2000 Step 2 Install the SUN2000 on the mounting bracket and tighten screw assemblies.
Page 40
Do not open the host panel of the SUN2000. Before opening the SUN2000 maintenance compartment door, turn off the downstream AC output switch and the bottom DC switch. Do not open the maintenance compartment door during rainfall or snowfall. If you must, take protective measures to prevent rain or snow from entering the maintenance compartment.
5 Electrical Connections Electrical Connections Precautions Before connecting cables, ensure that the DC switch on the SUN2000 and all the switches connecting to the SUN2000 are OFF. Otherwise, the high voltage of the SUN2000 may result in electric shock. ...
5.1 Preparing Cables Figure 5-1 Networking application (dashed boxes indicate optional components) SUN2000-3.8KTL/5KTL/7.6KTL-USL0 supports two PV string inputs. SUN2000-9KTL/10KTL/11.4KTL-USL0 supports three PV string inputs. In the example, two PV string inputs are used. Issue 01 (2018-05-21) Huawei Proprietary and Confidential...
Page 43
Figure 5-2 SUN2000 cable connections (dashed boxes indicate optional components) Table 5-1 Component description Component Description Source Energy meter The energy meter that can connect to the SUN2000 is the Purchased by the CCS-WNC-3D-240-MB. customer Emergency stop Normally closed (NC) contact...
Page 44
U.S. If the general loop to residence has a leakage protection device, there may be a risk of misprotection. Connecting the SUN2000 may increase the risk. It is recommended that the leakage protection device be relocated to a branch not involving the SUN2000.
Page 45
SUN2000-(3.8KTL-11.4KTL)-USL0 User Manual 5 Electrical Connections Table 5-2 Cable description (SUN2000-3.8KTL/5KTL/7.6KTL-USL0) Cable Type Conductor Source Cross-sectional Area Range Energy meter Multi-paired and individually foil 24–16 AWG Purchased by the signal cable shielded cable that complies with customer UL2919, CM/CMG (NEC type), or...
Page 46
− 6 AWG single-phase two-wire, use (SUN2000-7.6K three single-core outdoor TL-USL0) copper cables (L1, L2, PE). PE: 6 AWG Table 5-3 Cable description (SUN2000-9KTL/10KTL/11.4KTL-USL0) Cable Type Conductor Source Cross-sectional Area Range Energy meter Multi-paired and individually foil 24–16 AWG...
Page 49
Figure 5-6 Installing a pipe for routing cables (1) Locking nut (2) Cable hole at the bottom of the SUN2000 (3) Waterproofing bolt (4) Pipe nut...
5.3.1 Connecting the AC Output Power Cable Connecting the AC Output Power Cable for Home Load An AC switch must be installed on the AC side of the SUN2000 to ensure that the SUN2000 can be safely disconnected from the power grid.
Page 51
5 Electrical Connections Ensure that AC terminations are secured. Failure to do so may cause the SUN2000 to malfunction or cause damage to its terminal block due to issues such as overheating. Any such damage is not covered by the warranty.
Page 54
5 Electrical Connections Ensure that AC terminations are secured. Failure to do so may cause the SUN2000 to malfunction or cause damage to its terminal block due to issues such as overheating. Any such damage is not covered by the warranty.
If no PV string is connected to a DC input terminal of the SUN2000, do not remove the waterproofing bolt from the DC input terminal. Otherwise, the IP rating of the SUN2000 will be affected.
Page 56
During the installation of PV strings and SUN2000, the positive or negative terminals of PV strings may be grounded if power cables are not properly installed or routed. In this case, an AC or DC short circuit may occur and damage the SUN2000. Any such damage is not covered by the warranty.
Page 59
If no battery is connected to the SUN2000, do not remove the waterproofing bolt from the battery terminal. Otherwise, the IP rating of the SUN2000 will be affected. If a battery is connected to the SUN2000, set aside the waterproofing bolt. Reinstall the waterproofing bolt immediately after removing the connector.
Page 60
Ensure that cables are correctly connected between the terminals on the battery and the battery switch, and between the battery switch and the battery terminal on the SUN2000. Cables with high rigidity, such as armored cables, are not recommended, because poor contact may be caused by the bending of the cables.
SUN2000-(3.8KTL-11.4KTL)-USL0 User Manual 5 Electrical Connections Figure 5-16 Connecting the battery cable (SUN2000-9KTL/10KTL/11.4KTL-USL0) ----End 5.3.4 Connecting the Signal Cables Context When laying out signal cables, separate them from power cables to minimize signal interference. Figure 5-17 COM port Table 5-4 COM port definitions...
Page 62
Step 5 Check that the cables are connected correctly and securely. Then take appropriate measures to ensure that the pipe conduit and fittings are secured reliably, and seal the cable holes. Step 6 Keep the maintenance compartment clean. The signal cable terminal block is provided with the SUN2000. Issue 01 (2018-05-21) Huawei Proprietary and Confidential...
SUN2000-(3.8KTL-11.4KTL)-USL0 User Manual 5 Electrical Connections Figure 5-19 Connecting the signal cables (SUN2000-9KTL/10KTL/11.4KTL-USL0) ----End 5.3.5 (Optional) Installing an Antenna Prerequisites An antenna is configured. 4G and WLAN antennas can be installed in the same way. The following describes the installation of a 4G antenna.
The ground cable is connected correctly, securely, and reliably. Switches The DC switch and all the switches connecting to the SUN2000 are in the OFF position. The AC output power cable, DC input power Cable connections cable, battery cable, and signal cable are connected correctly, securely, and reliably.
The LEDs will turn off. Procedure Step 1 If a battery connects to the battery port of the SUN2000, turn off the battery Auxiliary Power ON/OFF switch, and then turn off the battery Circuit Breaker switch.
Page 68
The DC is on and the at long intervals SUN2000 has no output in backup state. Both the DC and AC are off, or the SUN2000 is in Low Power Consumption mode. Low Power Consumption mode means that the monitoring system of the SUN2000 is hibernating.
Power off the system after the SUN2000 has shut down. If no shutdown command is sent from the app, the SUN2000 will shut down after the power grid is powered off. The SUN2000 will wait for 1 minute and restart (not grid-tied) and charge the battery, which poses an electrical hazard when you turn off the DC switch.
Step 2 Turn off the AC switch between the SUN2000 and the power grid. Step 3 Turn off the DC switch at the bottom of the SUN2000. Step 4 If a battery connects to the battery port of the SUN2000, power off the battery. ----End 6.4 Grid-tied/Backup Mode Switching...
SUN2000 over WiFi to allow for querying alarms, configuring parameters, and performing routine maintenance, and commissioning. Connection Method After the DC or AC side of the SUN2000 is energized, the app can connect to the SUN2000 in either of the following ways: ...
Page 74
7 Operations on the Local FusionHome App Mobile phone operating system: Android 4.4 or later, iOS 8.0 or later. Recommended brands: Huawei, Samsung, and iPhone The mobile phone must support the access to the Internet over a web browser. ...
Home Screen on iOS The home screen on iOS contains WiFi, Inverter, and Tool Kit. The file manager in the tool kit can be used to export the logs of the SUN2000 and app in offline mode. Figure 7-6 Home screen on iOS 7.3 Connecting to a SUN2000 WiFi Network...
Page 77
Figure 7-7 Mobile phone connecting to the SUN2000 directly If you log in for the first time and the initial SUN2000 WiFi password is not changed, you can scan the WiFi login QR code on the side of the SUN2000 to connect to the SUN2000 WiFi network.
Page 78
If you log in for the first time and the SUN2000 WiFi password is not changed, tap Scan the QR code to connect to Huawei inverter WiFi network, and scan the WiFi login QR code on the side of the SUN2000 to obtain the WiFi login password.
Page 79
Figure 7-10 Mobile phone connecting to the SUN2000 directly Method 2: The mobile phone connects to the SUN2000 over a router. Do not use this method for the first login. Ensure that the SUN2000 has connected to the router.
Page 81
Before setting the grid code, ensure that the DC side of the inverter is energized. The Quick setting screen is displayed only when the SUN2000 connects to the app for the first time or the factory defaults of the SUN2000 are restored.
Page 83
After the management system is successfully connected, the SUN2000 will report the SN and installer registration code. If the connection fails, another connection attempt will start after 10 seconds. The installer registration code is generated by the SUN2000 automatically and is used for the installer to register with the management system and manage the inverter.
If the connection fails, another connection attempt will start after 10 seconds. The installer registration code is generated by the SUN2000 automatically and is used for the installer to register with the management system and manage the inverter.
Tap Submit to deliver the device information to the SUN2000. You can also tap Search next to Optimizer to automatically locate the string number and position of an optimizer and then add the optimizer.
Page 89
7 Operations on the Local FusionHome App During the optimizer search process, the SUN2000 enters Shutdown mode. After the search is completed and the SUN2000 has resumed normal functioning, the SUN2000 can be restarted. If the optimizer is changed after the system deployment, optimizer search must be performed.
----End 7.4.3.2 Upgrading Devices Prerequisites You have obtained the upgrade file through your supplier or Huawei engineers. Context In the iOS system, the upgrade file can be imported to the mobile phone by email. The upgrade file name extension must be .zip. Manually select is unavailable.
Default Default, the SUN2000 Grid connection with output power is not limited. zero power The SUN2000 can export its Power-limited Grid rated power to the power Connection grid. If this parameter is set to Grid connection with zero...
User Manual 7 Operations on the Local FusionHome App Parameter Description Value Range Connection and the SUN2000 is connected to a power meter, the SUN2000 supplies power limited based on the setting of Grid-tied Point Power to the power grid.
Step 1 On the Operation console screen, choose Device maint > Inverter ON/OFF, and perform operations as required. To start or shut down the SUN2000, you need to need to re-enter the password. Issue 01 (2018-05-21) Huawei Proprietary and Confidential...
SUN2000-(3.8KTL-11.4KTL)-USL0 User Manual 7 Operations on the Local FusionHome App Figure 7-32 Starting or shutting down the SUN2000 ----End 7.4.3.6 Restoring Factory Defaults Context Perform this operation with caution because all configured parameters except the current date, time, and networking related parameters will be restored to their factory defaults. This operation will not affect operating information, alarm records, or system logs.
----End 7.4.3.10 Restarting the SUN2000 Procedure Step 1 On the Operation console screen, choose Device maint > Restart to restart the SUN2000 To restart the SUN2000, you need to re-enter the password. Issue 01 (2018-05-21) Huawei Proprietary and Confidential...
Page 106
After the management system is successfully connected, the SUN2000 will report the SN and installer registration code. If the connection fails, another connection attempt will start after 10 seconds. The installer registration code is generated by the SUN2000 automatically and is used for the installer to register with the management system and manage the inverter.
If the connection fails, another connection attempt will start after 10 seconds. The installer registration code is generated by the SUN2000 automatically and is used for the installer to register with the management system and manage the inverter.
Page 109
Set this parameter based on The default value varies the grid code of the country depending on the model. or region where the Output mode SUN2000 is being used and the SUN2000 application L1/L2/N scenario. Before setting the L1/L2...
User Manual 7 Operations on the Local FusionHome App Parameter Description Value Range upper threshold, the SUN2000 is not allowed to connect to the power grid. Grid re-con voltage lower For a specific grid code, if [45%Vn, 95%Vn] limit (V)
Page 113
7 Operations on the Local FusionHome App Figure 7-43 Feature parameters The feature parameter values vary with the grid code. Table 7-10 Description of feature parameters Parameter Description Value Range When the SUN2000 is used MPPT multi-peak scanning Disable in scenarios where PV Enable strings are obviously shaded, enable this function.
Page 114
SUN2000 starts. AFCI The North American Disable standard requires the Enable SUN2000 to provide the DC arc detection function. AFCI detection adaptive Adjusts the sensitivity of arc High mode detection. Moderate ...
Page 118
Derated by active pwr % Adjusts the active power [0, 100] (0.1%) output of the SUN2000 by a percentage. If this parameter is set to 100, the SUN2000 delivers its maximum output power. Reactive power change Adjusts the change speed of [0.1, 1000]...
Page 123
Figure 7-48 Inverter connected router settings Before the Inverter connected router settings screen is displayed, the app sends a command to start scanning. Then the SUN2000 starts to scan nearby WiFi networks and sends the list of WiFi networks to the app.
Page 124
7 Operations on the Local FusionHome App Parameter Description Value Range Encrypted with Specifies the encryption Not encrypted level for the SUN2000 to WEP_OPEN connect to the router over WEP_SHARED WiFi. It should be the same as the encryption level of ...
Page 125
7 Operations on the Local FusionHome App If a power meter or battery is connected, the SUN2000 baud rate should be the same as the baud rate of the power meter or battery. Otherwise, the power meter or battery cannot communicate with the SUN2000.
Page 127
After the replacement is complete, connect the SUN2000 to the management system and check the correctness of the certificate. SUN2000 equipment SN. Registration code The installer registration...
Page 128
If the connection fails, another connection attempt will start after 10 seconds. The installer registration code is generated by the SUN2000 automatically and is used for the installer to register with the management system and manage the inverter.
The name of the connected SUN2000 is represented by its (SN), which can be found on the SN label attached to the side of the SUN2000. The login password is the same as that for the SUN2000 connected to the app and is used only when the SUN2000 connects to the app. ...
On the main screen, choose > Set and perform the following operations as required. Figure 7-63 Settings Reset the password for user to log in to the SUN2000. The password should meet the following requirements: Contains 6–20 characters.
Page 136
Figure 7-65 Inverter connected router settings Before the Inverter connected router settings screen is displayed, the app sends a command to start scanning. Then the SUN2000 starts to scan nearby WiFi networks and sends the list of WiFi networks to the app.
Page 137
WiFi network connects. Password Specifies the WiFi password for the router. Encrypted with Specifies the encryption Not encrypted level for the SUN2000 to WEP_OPEN connect to the router over WEP_SHARED WiFi. It should be the same ...
Specifies the address of the secondary DNS server. Start or shut down the SUN2000. To start or shut down the SUN2000, you need to re-enter the password. Figure 7-66 Starting or shutting down the SUN2000 7.5.7 About To view the version information, choose >...
The mobile phone or router Keep the mobile phone or is more than 3 meters away router within 3 meters of the from the SUN2000, so the SUN2000 to maintain a WiFi is not connected. reliable WiFi connection. The Failed to connect to...
System Maintenance 8.1 Routine Maintenance To ensure that the SUN2000 can operate properly over the long term, you are advised to perform routine maintenance as described in this chapter. Before cleaning the system, connecting cables, checking the grounding reliability, or doing any other maintenance, first power off the system (see 6.3 Powering Off the System...
Before replacing the power compartment, ensure that the screw assemblies between the maintenance compartment and mounting bracket have been tightened. The power compartment of SUN2000-3.8KTL/5KTL/7.6KTL-USL0 and SUN2000-9KTL/10KTL/11.4KTL-USL0 can be replaced in the same way. The following describes the installation of the SUN2000-3.8KTL/5KTL/7.6KTL-USL0. Procedure Step 1 Remove the maintenance compartment cover.
8-13, to manually clear it or power off the SUN2000. Powering off the SUN2000 to clear the alarm: Turn off the AC output switch and then the DC input switch. After 5 minutes, turn on the AC output switch and then the DC input switch.
Page 154
Grounding alarm The PE cable for the connected properly. reporting, and SUN2000 is not automatic 2. If the SUN2000 is connected. recovery after connected to the TN The voltage between the fault is power grid, check the SUN2000...
Step 5 Remove the mounting bracket. ----End 9.2 Packing the SUN2000 If the original packaging is available, put the SUN2000 inside it and then seal it using adhesive tape. If the original packaging is not available, put the SUN2000 inside a suitable cardboard box and seal it properly.