HUAWEI SUN2000-15KTL-M3 Smart String Inverter User Manual
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Huawei Technologies Co.,Ltd SUN2000 Solar Inverter QISSUN2000 QISSUN2000 sun2000
Huawei Technologies Co.,Ltd SUN2000 Solar lnverter QISSUN2000 QISSUN2000 sun2000
Scenario Where No Signal Cable Is Connected
Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual 6 Electrical Connections Issue 01 (2021-04-05) Copyright © Huawei ...
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Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual Figure 6-22 Network port signal definition 6 Electrical Connections Figure 6-23 Signal cable definitions of the terminal block Figure 6-24 COM port Scenario Where No Signal Cable Is Connected Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 64 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual 6 Electrical Connections If no signal cable is connected to the SUN2000, use a waterproof plug to block the cable hole of the signal cable connector and connect the signal cable connector to the communications port on the SUN2000 to improve the waterproof performance. Figure 6-25 Connecting the signal cable connector 6.3.2.1 Communication Modes RS485 Communication Figure 6-26 SmartLogger networking It is recommended that the number of SUN2000s connected to each RS485 route be less than 30. Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 65 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual 6 Electrical Connections MBUS communication The MBUS is a communication mode in which communication signals are loaded to power cables through the communications board for transmission. The built-in MBUS module in the SUN2000 does not need to be connected to cables. 6.3.2.2 (Optional) Connecting the RS485 Communications Cable to the SUN2000 Prerequisites If the signal cables are long enough to connect to the communications port on the SUN2000, you do not need to install an AC adapter box. Procedure Step 1 If the original signal cable is connected through RJ45 network ports, cut off the RJ45 connectors. Figure 6-27 Cut off the RJ45 connectors Step 2 Connect the signal cable to the signal cable connector. Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 66 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual Figure 6-28 Connecting the cable 6 Electrical Connections Step 3 Connect the signal cable connector to the COM port. Figure 6-29 Securing the signal cable connector ----End 6.3.2.3 (Optional) Connecting the Signal Transfer Cable Prerequisites If the signal cables are not long enough to connect to the inverter communications port, connect a signal transfer cable. Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 67 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual Figure 6-30 Terminal block in the AC adapter box 6 Electrical Connections 1Inverter 2Customer Table 6-1 Signal definitions of the terminal block in the AC adapter box Port Reser RS485-1 ved RS485-2 Ripple Control Inverter - A1-1 A1-2 A2 DIN1 DIN3 - B1-1 B1-2 B2 DIN2 DIN4 Customer - B-IN B-OUT B2 DIN2 DIN4 - A-IN A-OUT A2 DIN1 DIN3 GND GND Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 68 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual Figure 6-31 Pin definitions 6 Electrical Connections Pin Definition 1 485A1_1 3 485B1_1 5 - 7 485A2 9 485B2 11 - 13 - 15 - Function Pin RS485 differential signal 2 + RS485 differential signal 4 � - 6 RS485 differential signal 8 + RS485 differential signal 10 � - 12 - 14 - 16 Definition 485A1_2 485B1_2 DIN1 DIN2 DIN3 DIN4 GND Function RS485 differential signal + RS485 differential signal � - Dry contact for power grid scheduling Procedure Step 1 Remove the two security Torx screws from the maintenance compartment door using a security Torx wrench. Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 69 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual Figure 6-32 Opening the AC adapter box 6 Electrical Connections Step 2 Route the signal conversion cable and user-side signal cable through the COM port at the bottom of the AC adapter box. Figure 6-33 Routing the signal cable Step 3 Connect one end of the signal conversion cable to the COM port of the inverter. Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 70 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual Figure 6-34 Connecting the signal conversion cable 6 Electrical Connections Step 4 Connect the other end of the signal conversion cable to the terminal block. Figure 6-35 Connecting the signal conversion cable Step 5 Connect the user-side signal cable to the terminal block. Figure 6-36 Connecting the user-side signal cable Step 6 Secure the terminal block in the AC adapter box, and connect the PE wires of the signal conversion cable and the user-side signal cable. Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 71 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual Figure 6-37 Secure the terminal block 6 Electrical Connections ----End 6.3.3 Installing the AC Output Power Cable Precautions 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. Do not connect loads between the SUN2000 and the AC switch. Use a socket wrench and extension rod to connect the AC power cable. The extension rod must be longer than 150 mm. Do not install third-party devices in the AC connection box. There are two rows of AC terminals in the AC adapter box. The lower row is used to connect the AC transfer cable between the AC adapter box and the SUN2000, and the upper row is used to connect the AC output power cable on the user side. Procedure Step 1 Connect the AC transfer cable to the AC terminals in the lower row of the AC adapter box. Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 72 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual Figure 6-38 Connecting the AC transfer cable 6 Electrical Connections Step 2 Remove the AC terminal box and install partition boards. Figure 6-39 Removing the AC terminal box Step 3 Route the AC transfer cable through the AC wiring terminal. Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 73 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual Figure 6-40 Routing the AC power cable 6 Electrical Connections Step 4 Connect the AC transfer cable to the SUN2000. Figure 6-41 Connecting the AC transfer cable Step 5 Select an appropriate rubber liner based on the cable outer diameter. Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 74 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual Figure 6-42 Selecting an appropriate rubber liner 6 Electrical Connections Step 6 Connect the AC output power cable on the user side (using a five-core cable as an example). Figure 6-43 Connecting the AC power cable Step 7 Install the AC terminal cover and close the door of the adapter box. Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 75 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual Figure 6-44 Installing the AC terminal cover 6 Electrical Connections ----End 6.3.4 Installing DC Input Power Cables Precautions Before connecting the DC input power cables, ensure that the DC voltage is within the safe range (lower than 60 V DC) and that the DC switch on the SUN2000 is OFF. Failing to do so may result in electric shocks. When the SUN2000 is running, it is not allowed to work on the DC input power cables, such as connecting or disconnecting a PV string or a PV module in a PV string. Failing to do so may cause electric shocks. If no PV string connects to a DC input terminal of the SUN2000, do not remove the watertight cap from the DC input terminals. Otherwise, the IP rating of the SUN2000 will be affected. Ensure that the following conditions are met. Otherwise, the SUN2000 may be damaged, or even a fire may occur. Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 76 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual 6 Electrical Connections PV modules connected in series in each PV string are of the same specifications. The DC input voltage of the SUN2000 shall not exceed 1100 V DC under any circumstance. The polarities of electric connections are correct on the DC input side. The positive and negative terminals of a PV string connect to the corresponding positive and negative DC input terminals of the SUN2000, respectively. If the DC input power cables are reversely connected, do not operate the DC switch as well as positive and negative connectors immediately. 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 PV string polarity before reconnecting the PV string to the SUN2000. The SUN2000 does not support power supplies other than PV strings. Since the output of the PV string connected to the SUN2000 cannot be grounded, ensure that the PV module output is well insulated to ground. During the installation of PV strings and the SUN2000, the positive or negative terminals of PV strings may be short-circuited to ground if the 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 device damage is not covered under any warranty. In the spare part replacement scenario, the DC input power cables can be connected only to PV1�PV6. If the DC input power cables are connected to PV7 or PV8, the inverter data cannot be transmitted to the northbound device. Figure 6-45 DC input terminals When the DC input is not fully configured, the DC input terminals must meet the following requirements: 1. Evenly distribute the DC input power cables on the four MPPTs and preferentially connect them from MPPT 1 to MPPT 4. 2. Maximize the number of connected MPPTs. Number of PV Strings Terminal Selection Number of PV Strings Terminal Selection 1 Connects to any route. 2 PV1, PV7 3 PV1, PV3, PV7 4 PV1, PV3, PV5, PV7 5 PV1, PV2, PV3, PV5, PV7 6 PV1, PV2, PV3, PV5, PV7, PV8 Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 77 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual 6 Electrical Connections Number of PV Strings 7 Terminal Selection PV1, PV2, PV3, PV4, PV5, PV7, PV8 Number of PV Strings 8 Terminal Selection PV1, PV2, PV3, PV4, PV5, PV6, PV7, PV8 Procedure Before connecting DC input power cables, ensure that the original DC terminals have been cut off. If the original DC connector is directly connected to the SUN2000-(15KTL-50KTL)-M3 series, the inverter may be burnt. You are advised to use the PV-CZM-22100 (Staubli) crimping tool and do not use it with the positioning block. Otherwise, the metal terminals may be damaged. The PV-MS (Staubli) or PV-MS-HZ (Staubli) open-end wrench is recommended. Cables with high rigidity, such as armored cables, are not recommended as DC input power cables, because poor contact may be caused by the bending of the cables. Before assembling DC connectors, label the cable polarities correctly to ensure correct cable connections. After the positive and negative connectors snap into place, pull the DC input power cables back to ensure that they are connected securely. Use the positive and negative Staubli MC4 metal terminals and DC connectors delivered 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 any warranty or service agreement. Step 1 Cut off the original DC terminals. Figure 6-46 Cut off the original DC terminals Step 2 Connect the DC power cables. Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 78 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual Figure 6-47 Connecting DC power cables 6 Electrical Connections If the original DC input power cables are not long enough, use the DC input extension cables delivered with the package. Figure 6-48 Connecting the DC input extension cable ----End 6.3.5 (Optional) Installing the WLAN-FE Smart Dongle Procedure If the original SUN2000 uses the FE communication mode, you need to install the WLAN-FE Smart Dongle for the SUN2000 connected to the monitoring device after the replacement. Use the RS485 communication mode for other SUN2000s. Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 79 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual Figure 6-49 Networking diagram before the replacement 6 Electrical Connections Figure 6-50 Networking diagram after the replacement Step 1 Install the WLAN-FE Smart Dongle. Figure 6-51 Installing the WLAN-FE Smart Dongle The WLAN-FE Smart Dongle is not provided in standard configuration. Install the network cable before installing the Smart Dongle on the SUN2000. Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 80 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual 6 Electrical Connections For details about how to use the WLAN-FE Smart Dongle SDongleA-05, see SDongleA-05 Quick Guide (WLAN-FE). The quick guide is delivered with the Smart Dongle. You can also scan the QR code to obtain the documentation. ----End Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 81 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual 7 Commissioning 7 Commissioning 7.1 Checking Before Power-On Table 7-1 Checklist No. Check Item 1 SUN2000 installation 2 Smart Dongle 3 Cable routing 4 Cable ties 5 Reliable grounding 6 Switch 7 Cable connection 8 Unused terminals and ports 9 Installation environment Acceptance Criteria The SUN2000 is installed correctly and securely. The Smart Dongle is installed correctly and securely. The cables are routed properly as required by the customer. Cable ties are evenly distributed and no burr exists. The PE cable is connected correctly and securely. DC switches and all the switches connecting to the SUN2000 are OFF. The AC output power cable, and DC input power cables are connected correctly and securely. Unused terminals and ports are locked by watertight caps. The installation space is proper, and the installation environment is clean and tidy. Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 82 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual 7.2 System Power-On Prerequisites 7 Commissioning 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 DC power supply is connected but the AC power supply is disconnected, the SUN2000 will report a Grid Loss alarm. The SUN2000 can start properly only after the power grid recovers. Procedure Step 1 Turn on the AC switch between the SUN2000 and the power grid. Step 2 (Optional) Remove the locking screw beside the DC switch. Figure 7-1 Removing the locking screw beside the DC switch Step 3 Turn on the DC switch at the bottom of the SUN2000. Step 4 Observe the LED indicators to check the operating status of the SUN2000. Table 7-2 Indicator description Category Status Description Running indicator LED1 LED2 � Steady green Steady green The SUN2000 is operating in grid-tied mode. Blinking green Off slowly (on for 1s and off for 1s) The DC is on and the AC is off. Blinking green slowly (on for 1s and off for 1s) Blinking green slowly (on for 1s and off for 1s) Both the DC and AC are on, and the SUN2000 is not supplying power to the power grid. Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 83 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual 7 Commissioning Category Status Description Off Blinking green The DC is off and the slowly AC is on. Off Off Both the DC and AC are off. Blinking red fast (on � for 0.2s and off for 0.2s) DC environment alarm � Blinking red fast (on AC environment for 0.2s and off for alarm 0.2s) Steady red Steady red Faulty Communications indicator LED3 Blinking green fast (on for 0.2s and then off for 0.2s) � Communication is in progress. Blinking green slowly (on for 1s and off for A mobile phone is 1s) connected. Off No communication Note: If LED1, LED2, and LED3 are steady red, the SUN2000 is faulty and needs to be replaced. ----End Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 84 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual 8 Human-Machine Interaction 8 Human-Machine Interaction 8.1 Setting Parameters for Replacing a SUN2000 Access the HUAWEI AppGallery (http://appstore.huawei.com), search for SUN2000, and download the app installation package. You can also scan the QR code below to download the app. You are advised to use a browser to scan the QR code. The screenshots are for reference only. The actual screens may vary. Obtain the initial password for connecting to the SUN2000 WLAN from the label on the side of the SUN2000. Set the password upon the first login. You are advised to change the password periodically. After changing the password, remember the new password to ensure account security. Not changing the initial 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. Set the correct grid code based on the application area and scenario of the SUN2000. Step 1 Connect to the WLAN of the SUN2000 and log in as user installer. Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 85 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual Figure 8-1 Login 8 Human-Machine Interaction At the first login, the Quick settings screen is displayed by default. Exit the quick settings. Step 2 Choose Maintenance > Device replacement, select a device replacement type, and set related parameters. Figure 8-2 Replacement You need to set Device replacement parameter only when the SUN2000 V100, SUN2000 V200R001, or SUN2000 V200R002 inverters are replaced with SUN2000-(15KTL-50KTL)-M3 series inverters. You do not need to set the parameter when the inverters are replaced with inverters of the same version. Step 3 (Optional) If other parameters need to be set, tap Settings on the home screen and set other parameters. ----End Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 86 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual 8 Human-Machine Interaction 8.2 SmartLogger Networking Scenario For details, see PV Plants Connecting to Huawei Hosting Cloud Quick Guide (Inverters + SmartLogger3000), PV Plants Connecting to SmartPVMS Quick Guide (Inverters + SmartLogger3000 + RS485 Networking) and PV Plants Connecting to SmartPVMS Quick Guide (Inverters + SmartLogger3000 + MBUS Networking). Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 87 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual 9 Maintenance 9.1 System Power-Off Precautions 9 Maintenance After the SUN2000 powers off, the remaining electricity and heat may still cause electric shocks and body burns. Therefore, put on protective gloves and begin operating the SUN2000 five minutes after the power-off. Procedure Step 1 Send a shutdown command on the app. 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 (Optional) Install the locking screw for the DC switch. Figure 9-1 Installing the locking screw for the DC switch Step 5 Turn on the DC switch between the PV string and the SUN2000 if there is any. ----End Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 88 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual 9 Maintenance 9.2 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, connecting cables, and ensuring the grounding reliability, power off the system. Table 9-1 Maintenance checklist Check Item Check Method Maintenance Interval System cleanliness Check periodically that the heat sinks are free from obstacles and dust. Once every 6 to 12 months System operating Check that the SUN2000 is not damaged status or deformed. Check that the SUN2000 operates with no abnormal sound. Check that all SUN2000 parameters are correctly set during operation. Once every 6 months Electrical connection Check that cables are secured. Check that cables are intact, and that in particular, the parts touching the metallic surface are not scratched. The first inspection is 6 months after the initial commissioning. From then on, the interval can be 6 to 12 months. Grounding reliability Check that ground cables are securely connected. The first inspection is 6 months after the initial commissioning. From then on, the interval can be 6 to 12 months. Air tightness Check that all terminals and ports are properly sealed. Once a year 9.3 Troubleshooting Alarm severities are defined as follows: Major: The inverter is faulty. As a result, the output power decreases or the grid-tied power generation is stopped. Minor: Some components are faulty without affecting the grid-tied power generation. Warning: The inverter works properly. The output power decreases or some authorization functions fail due to external factors. Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 89 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual 9 Maintenance Table 9-2 Common fault alarm list ID Name Severity Cause Solution 103 106~113 120~127 High DC input voltage Major Abnormal string 1 to Abnormal string 8 Warning String 1 reversed to String 8 reversed Cause ID = 1: Major Cause ID = 2: Warni ng The PV array is not properly configured. Excessive PV modules are connected in series to the PV string, and therefore the PV string open-circuit voltage exceeds the maximum inverter operating voltage. Cause ID 1: PV strings 1 and 2 Cause ID 2: PV strings 3 and 4 Cause ID 3: PV strings 5 and 6 Cause ID 4: PV strings 7 and 8 Cause ID = 1 The PV string is shaded for a long time. The PV string is aged. Cause ID = 1 The PV string polarity is reversed. Cause ID = 2 The number of PV modules connected in series to the PV string is insufficient. As a result, the terminal voltage is lower than that of other strings. 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 inverter operating voltage. After the PV string configuration is corrected, the alarm disappears. 1. Check whether the PV string current is obviously lower than the currents of other PV strings. 2. If the PV string current is obviously low, check whether the PV string is shaded. 3. If the PV string surface is clean and not shaded, check whether PV modules are damaged. Cause ID = 1 Check whether the PV string is reversely connected to the inverter. If yes, wait until the solar irradiance declines at night and the PV string current drops to below 0.5 A. Then, turn off the two DC switches and correct the PV string connection. Cause ID = 2 Check whether the number of PV modules connected in series to the PV string is less than that of other PV strings. If yes, adjust the number of PV modules. 200 Abnormal Major Abnormal external conditions Cause ID = 3/10/11 DC circuit trigger the protection for the DC circuit inside the inverter. The possible causes are as follows: 1. The inverter monitors its external operating conditions in real time and automatically recovers after the fault is Cause ID = 3 rectified. Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 90 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual 9 Maintenance ID Name Severity Cause Solution The inverter input is 2. If the alarm persists, contact disconnected accidentally, Huawei technical support. or the PV string output power changes sharply because the PV string is shaded. Cause ID = 10 Cause ID = 12/15 Turn off the AC output switch and DC input switch, and then turn them on after 5 minutes. If the alarm persists, contact The three phases of the Huawei technical support. power grid are seriously unbalanced, which triggers the protection for the internal control circuit of NOTE Cause ID = 12: Perform the preceding operations when the PV string current is less than 1 A. the inverter. Cause ID = 16 Cause ID = 11 1. If there is no PID module in The power grid voltage the system, set PID changes sharply and the protection at night and inverter input power fails to Night-time reactive power discharge in a short time, output to Disable for the which increases the internal inverter over the SmartLogger voltage and triggers or app. protection. 2. If there is a PID module in the Cause ID = 12/15 system, check whether the An unrecoverable fault occurs on a circuit inside device is abnormal. If yes, rectify the fault. the inverter. 3. Check whether PID Cause ID = 16 The voltage between the PV string and the ground is abnormal, and there is a risk of power degradation. compensation direction of the inverter and PV module compensation voltage direction of the PID module are correctly set based on the PV module model. If not, reset them on the SmartLogger or app. 4. If the alarm persists, contact your dealer or Huawei technical support. 202 Abnormal Major Abnormal external conditions Cause ID = 13/14/16 invert circuit trigger the protection for the inverter circuit inside the inverter. The possible causes are as follows: 1. The inverter monitors its external operating conditions in real time and automatically recovers after the fault is Cause ID = 13 rectified. The power grid voltage drops dramatically or the power grid is short-circuited. As a result, the internal voltage detection circuit in the inverter is damaged. 2. If the alarm persists, contact Huawei technical support. Cause ID = 20 1. Check whether the inverter output power cable is short-circuited. Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 91 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual 9 Maintenance ID Name Severity Cause Solution Cause ID = 14 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 protection is triggered. 2. If the alarm persists, contact Huawei technical support. Cause ID = 16 The DC component in the power grid current exceeds the upper threshold. Cause ID = 20 The inverter output is short-circuited. As a result, the output current surges to a value above the upper threshold, and the inverter protection is triggered. 301 Abnormal Major The power grid voltage is Cause ID = 4 grid voltage outside the acceptable range. The possible causes are as follows: 1. If the alarm occurs occasionally, the power grid may be abnormal temporarily. Cause ID = 4 The inverter automatically The power grid voltage is below the lower threshold. Cause ID = 16 The power grid voltage exceeds the upper threshold. recovers after detecting that the power grid becomes normal. 2. If the alarm persists, check whether the power grid voltage is within the acceptable range. If not, Cause ID = 19 contact the local power The power grid voltage has exceeded the upper threshold for 10 minutes. Cause ID = 26 operator. If yes, log in to the app, SmartLogger, or NMS to change the power grid overvoltage and undervoltage protection thresholds with the The power grid voltage consent of the local power exceeds the upper operator. threshold. 3. If the alarm persists for a long Cause ID = 28 time, check the AC circuit The three phases of the power grid differ greatly in breaker and AC output power cable. voltage. Cause ID = 16/19/26 Cause ID = 29 1. Power grid outage occurs. 2. The AC circuit is 1. If the voltage at the grid connection point is too high, contact the local power operator. Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 92 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual 9 Maintenance ID Name Severity Cause Solution disconnected or the AC switch is off. Cause ID = 31/32/33 The impedance of the output phase wire A (cause ID = 31)/B (cause ID = 32)/C (cause ID = 33) to the PE cable is low or the wire is short-circuited. 2. If you have confirmed that the voltage at the grid connection point exceeds the upper threshold and obtained consent from the local power operator, modify the overvoltage protection thresholds. 3. Check whether the peak grid voltage exceeds the upper threshold. Cause ID = 28 1. If the exception is caused by an external fault, the inverter automatically recovers after the fault is rectified. 2. If the alarm persists and affects the energy yield of the PV plant, contact the local power operator. Cause ID = 29 1. Check the AC voltage. 2. Check whether the AC circuit is disconnected or the AC switch is off. Cause ID = 31/32/33 Check the impedance of the output phase wire A (cause ID = 31)/B (cause ID = 32)/C (cause ID = 33) to the PE cable, locate the position with lower impedance, resolve the issue. 305 Abnormal Major Cause ID = 2 Cause ID = 2/4 grid frequency The actual power grid frequency is higher than the 1. If the alarm occurs occasionally, the power grid requirements for the local may be abnormal temporarily. power grid code. The inverter automatically Cause ID = 4 The actual power grid frequency is lower than the requirements for the local power grid code. Cause ID = 5 recovers after detecting that the power grid becomes normal. 2. If the alarm persists, check whether the power grid frequency is within the acceptable range. If not, The actual change rate of contact the local power the power grid frequency operator. If yes, log in to the does not meet the app, SmartLogger, or NMS to requirements for the local change the power grid power grid code. overfrequency and Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 93 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual 9 Maintenance ID Name Severity Cause Solution underfrequency protection thresholds with the consent of the local power operator. Cause ID = 5 1. If the alarm occurs occasionally, the power grid may be abnormal temporarily. The inverter automatically recovers after detecting that the power grid becomes normal. 2. If the alarm persists, check whether the power grid frequency is within the acceptable range. If not, contact the local power operator. 313 Low Major Cause ID = 1 1. Check the impedance between the insulation resistance The PV array is short-circuited with PE. PV string and the PE cable. If a short circuit occurs, rectify the fault. The PV string is installed in 2. If you have confirmed that the a moist environment for a impedance is less than the default long time. value in a cloudy or rainy environment, log in to the app, SmartLogger, or NMS and set Insulation resistance protection threshold. 318 Abnormal Major Cause ID = 1 1. If the alarm occurs accidentally, residual current The insulation resistance against the PE cable at the input side decreases when the inverter is operating, which the external power cable may be abnormal temporarily. The inverter automatically recovers after the fault is rectified. causes an excessively high 2. If the alarm persists or lasts a residual current. long time, check whether the impedance between the PV string and ground is too low. 321 Cabinet Major Cause ID = 1 1. Check the ventilation and overtemp erature The inverter is installed in a place with poor ventilation. ambient temperature at the inverter installation position. The ambient temperature 2. If the ventilation is poor or the ambient temperature exceeds the exceeds the upper threshold. upper threshold, improve the ventilation and heat dissipation. The internal fan is faulty. 3. If the ventilation and ambient temperature are normal, contact Huawei technical support. 326 Abnormal Major Cause ID = 1 1. Check whether the neutral wire grounding The neutral wire or PE and PE cable of the inverter are properly connected. Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 94 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual 9 Maintenance ID Name Severity Cause Solution cable of the inverter is not connected. The output side of the inverter does not connect to an isolation transformer when the PV strings are grounded. 2. If the PV string output is grounded, check whether the output side of the inverter connects to an isolation transformer. 400 System Major Cause ID = 1/3/21/23/27 Turn off the AC output switch and fault An unrecoverable fault occurs DC input switch, and then turn them on a circuit inside the inverter. on after 5 minutes. If the alarm persists, contact Huawei technical support. 410 Abnormal Major Cause ID = 4 1. When the alarm is generated, the auxiliary power The sampling control board has an abnormal voltage. The possible causes are as follows: inverter shuts down automatically. After the fault is rectified, the inverter automatically starts. The internal power chip of 2. If the alarm persists, contact the sampling control board is faulty. Huawei technical support. The detection circuit is faulty. 411 AFCI Major Cause ID = 1/2/3 1. Turn off the AC output switch self-check failure The AFCI self-check fails. and DC input switch, and then turn them on after 5 minutes. If the alarm persists, contact Huawei technical support. 2. If you have confirmed that the AFCI function is not required, disable it. 412 DC arc Major Cause ID = 1/2/3/4 Check whether the PV string cable is fault The PV string cable is in poor in poor contact or with open circuits. contact or with open circuits. If yes, reconnect the cable. 504 Software Minor Cause ID = 1/2/3 Check whether you have performed a version unmatch During inverter software upgrade, the version of the software loaded is incorrect. software upgrade recently. If yes, upgrade the software to the correct version again. 505 Upgrade Major Cause ID = 1 Perform the upgrade again. failed The upgrade is not completed normally. 506 License Warning Cause ID = 1 1. Apply for a new license. expired The license has entered its 2. Load a new license. grace period. The license is about to expire. Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 95 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual 9 Maintenance ID 2001 2002 2003 2011 2012 Name High string input voltage DC arc fault DC arc fault String reverse connectio n String current backfeed Severity Major Major Major Major Warning Cause Solution The PV array is not properly configured. Excessive PV modules are connected in series to the PV string, and therefore the PV string open-circuit voltage exceeds the maximum inverter operating voltage. Cause ID 1: PV strings 1 and 2 Cause ID 2: PV strings 3 and 4 Cause ID 3: PV strings 5 and 6 Cause ID 4: PV strings 7 and 8 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 inverter operating voltage. After the PV string configuration is corrected, the alarm disappears. The PV string power cables arc or are in poor contact. Cause ID 1: PV strings 1 and 2 Cause ID 2: PV strings 3 and 4 Cause ID 3: PV strings 5 and 6 Cause ID 4: PV strings 7 and 8 Check whether the PV string cables arc or are in poor contact. The PV string power cables arc Check whether the PV string cables or are in poor contact. arc or are in poor contact. Cause ID 1�8: PV strings 1�8 The PV string polarity is reversed. Cause ID 1�8: PV strings 1�8 Check whether the PV string is reversely connected to the inverter. If yes, wait until the solar irradiance declines at night and the PV string current drops to below 0.5 A. Then, turn off the two DC switches and correct the PV string connection. The number of PV modules connected in series to the PV string is insufficient. As a result, the terminal voltage is lower than that of other strings. Cause ID 1�8: PV strings 1�8 1. Check whether the number of PV modules connected in series to the PV string is less than that of other PV strings. If yes, wait until the PV string current drops below 0.5 A, turn off all DC switches, and adjust the number of PV modules in the PV string. 2. Check whether the open-circuit voltage of the PV string is abnormal. Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 96 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual 9 Maintenance ID 2013 2014 2021 2031 Name Severity Abnormal Warning string power High input string voltage to ground Major AFCI Major self-check failure Phase Major wire short-circ Cause The PV string is shaded for a long time. The PV string is aged abnormally. Cause ID 1�8: PV strings 1�8 Cause ID = 1 The voltage between the input PV modules and the ground is abnormal, and there is a risk of power degradation. Cause ID = 1, 2 The AFCI self-check fails. Cause ID = 1 The impedance of the output Solution 3. Check whether the PV string is shaded. 1. Check whether the current of the abnormal PV string is lower than that of other PV strings. If yes, check whether the abnormal PV string is shaded and the actual number of PV modules in the PV string 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. 1. If no PID compensation device exists in the system, disable the PID protection function at night. Note: If the PID protection function is disabled but reactive power compensation at night is enabled, PV modules may be degraded. 2. If the system has a PID compensation device, check whether the device is abnormal. If yes, rectify the fault. 3. Check whether the settings of compensation direction for the inverter and the PID compensation device are consistent. If not, set them to be consistent based on the PV module model. (Note: If the PV� is set to positive offset, the voltage between the inverter PV� and the ground should be greater than 0 V to clear the alarm; if the PV+ is set to negative offset, the voltage between the inverter PV+ and the ground should be less than 0 V to clear the alarm.) 4. If the alarm persists, contact your dealer or Huawei technical support. Turn off the AC output switch and DC input switch, and then turn them on after 5 minutes. If the alarm persists, contact Huawei technical support. Check the impedance of the output phase wire to PE, locate the position with low impedance, and rectify the Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 97 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual 9 Maintenance ID 2032 2033 2034 2035 Name uited to PE Grid loss Grid undervolt age Grid overvolta ge Grid volt. Imbalanc Severity Major Major Major Major Cause phase wire to PE is low or the output phase wire is short-circuited to PE. Cause ID = 1 Power grid outage occurs. The AC circuit is disconnected or the AC switch is off. Cause ID = 1 The power grid voltage is below the lower threshold or the low-voltage duration has lasted for more than the value specified by LVRT. Cause ID = 1 The power grid voltage exceeds the upper threshold or the high voltage duration has lasted for more than the value specified by HVRT. Cause ID = 1 Solution fault. 1. The alarm is cleared automatically after the power grid recovers. 2. Check whether the AC circuit is disconnected or the AC switch is off. 1. If the alarm occurs occasionally, the power grid may be abnormal temporarily. The inverter automatically recovers after detecting that the power grid becomes normal. 2. If the alarm persists, check whether the power grid voltage is within the acceptable range. If not, contact the local power operator. If yes, modify the grid undervoltage protection threshold through the app, SmartLogger, or NMS with the consent of the local power operator. 3. If the alarm persists for a long time, check the AC circuit breaker and AC output power cable. 1. If the alarm occurs occasionally, the power grid may be abnormal temporarily. The inverter automatically recovers after detecting that the power grid becomes normal. 2. If the alarm persists, check whether the power grid frequency is within the acceptable range. If not, contact the local power operator. If yes, modify the grid overfrequency protection threshold through the app, SmartLogger, or NMS with the consent of the local power operator. 3. Check whether the peak voltage of the power grid is too high. If the alarm persists and lasts for a long time, contact the local power operator. 1. If the alarm occurs occasionally, the power grid may be abnormal Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 98 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual 9 Maintenance ID 2036 2037 2038 Name e Grid overfrequ ency Grid underfreq uency Unstable grid Severity Major Major Major Cause The difference between power grid phase voltages exceeds the upper threshold. Cause ID = 1 Power grid exception: The actual power grid frequency is higher than the requirements for the local power grid code. Cause ID = 1 Power grid exception: The actual power grid frequency is lower than the requirements for the local power grid code. Cause ID = 1 Power grid exception: The Solution temporarily. The inverter automatically recovers after detecting that the power grid becomes normal. 2. If the alarm persists, check whether the power grid voltage is within the acceptable range. If not, contact the local power operator. 3. If the alarm lasts for a long time, check the AC output power cable connection. 4. If the AC output power cable is correctly connected, yet the alarm persists and affects the energy yield of the PV plant, contact the local power operator. 1. If the alarm occurs occasionally, the power grid may be abnormal temporarily. The inverter automatically recovers after detecting that the power grid becomes normal. 2. If the alarm persists, check whether the power grid frequency is within the acceptable range. If not, contact the local power operator. If yes, modify the grid overfrequency protection threshold through the app, SmartLogger, or NMS with the consent of the local power operator. 1. If the alarm occurs occasionally, the power grid may be abnormal temporarily. The inverter automatically recovers after detecting that the power grid becomes normal. 2. If the alarm persists, check whether the power grid frequency is within the acceptable range. If not, contact the local power operator. If yes, modify the grid underfrequency protection threshold through the app, SmartLogger, or NMS with the consent of the local power operator. 1. If the alarm occurs occasionally, the power grid may be abnormal Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 99 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual 9 Maintenance ID 2039 2040 2051 2061 Name Severity frequency Output Major overcurre nt Output DC compone nt overhigh Major Abnormal Major residual current Abnormal Major grounding Cause actual change rate of the power grid frequency does not meet the requirements for the local power grid code. Solution temporarily. The inverter automatically recovers after detecting that the power grid becomes normal. 2. If the alarm persists, check whether the power grid frequency is within the acceptable range. If not, contact the local power operator. Cause ID = 1 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 protection is triggered. 1. The inverter monitors its external operating conditions in real time and automatically recovers after the fault is rectified. 2. If the alarm persists and affects the energy yield of the PV plant, check whether the output is short-circuited. If the fault cannot be rectified, contact your dealer or Huawei technical support. Cause ID = 1 The DC component of the inverter output current exceeds the upper threshold. Cause ID = 1 The insulation impedance of the input side to PE decreases when the inverter is operating. 1. The inverter monitors its external operating conditions in real time and automatically recovers after the fault is rectified. 2. If the alarm persists and affects the energy yield of the PV plant, contact your dealer or Huawei technical support. 1. If the alarm occurs accidentally, the external power cable may be abnormal temporarily. The inverter automatically recovers after the fault is rectified. 2. If the alarm persists or lasts a long time, check whether the impedance between the PV string and ground is too low. Cause ID = 1 The neutral wire or PE cable of the inverter is not connected. The output mode set for the inverter is inconsistent with the cable connection mode. Power off the inverter (turn off the AC output switch and DC input switch, and wait for a period of time. For details about the wait time, see the description on the device safety warning label), and then perform the following operations: 1. Check whether the PE cable for the inverter is connected properly. 2. If the inverter is connected to a TN power grid, check whether the neutral wire is properly connected and whether the voltage of the neutral wire to Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 100 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual 9 Maintenance ID 2062 2063 2064 2065 2066 Name Low insulation resistance Cabinet overtemp erature Device fault Upgrade failed or version mismatch License expired Severity Major Minor Major Minor Warning Cause Solution ground is normal. 3. After the inverter is powered on, check whether the output mode set for the inverter is consistent with the output cable connection mode. Cause ID = 1 The PV array is short-circuited with PE. The PV string has been in a moist environment for a long time and the circuit 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 whether the PE cable of the inverter is correctly connected. 3. If you have confirmed that the impedance is lower than the specified protection threshold in a cloudy or rainy environment, log in to the app, SmartLogger, or NMS and set Insulation resistance protection threshold. Cause ID = 1 The inverter is installed in a place with poor ventilation. The ambient temperature exceeds the upper threshold. The inverter is not operating properly. 1. Check the ventilation and ambient temperature at the inverter installation position. 2. If the ventilation is poor or the ambient temperature exceeds the upper threshold, improve the ventilation and heat dissipation. 3. If both the ventilation and ambient temperature meet requirements yet the alarm persists, contact your dealer or Huawei technical support. Cause ID = 1�15 An unrecoverable fault occurs on a circuit inside the inverter. Turn off the AC output switch and DC input switch, and then turn them on after 5 minutes. If the alarm persists, contact your dealer or Huawei technical support. NOTICE Cause ID = 1: Perform the preceding operations when the PV string current is less than 1 A. Cause ID = 1�6 The upgrade is not completed normally. 1. Perform an upgrade again. 2. If the upgrade fails several times, contact your dealer or Huawei technical support. Cause ID = 1 The privilege license has entered the grace period. The privilege feature is 1. Apply for a new license. 2. Load a new certificate. Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 101 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual 9 Maintenance ID 61440 2072 2085 2087 Name Severity Cause about to expire. Solution Faulty Minor monitorin g unit Transient AC overvolta ge Major Built-in PID operation abnormal Minor Cause ID = 1 The flash memory is insufficient. The flash memory has bad sectors. Turn off the AC output switch and DC input switch, and then turn them on after 5 minutes. If the alarm persists, replace the monitoring board or contact your dealer or Huawei technical support. Cause ID = 1 The inverter detects that the phase voltage exceeds the transient AC overvoltage protection threshold. 1. If the voltage at the grid connection point is too high, contact the local power operator. 2. If you have confirmed that the voltage at the grid connection point exceeds the upper threshold and obtained consent from the local power operator, modify the overvoltage protection thresholds. 3. Check whether the peak grid voltage exceeds the upper threshold. Cause ID = 1, 2 The output resistance of PV arrays to ground is low. The system insulation resistance is low. Cause ID = 1 1. Turn off the AC output switch and DC input switch, wait for a period of time (for details about the wait time, see the description on the device safety warning label), and then turn on the DC input switch and AC output switch. 2. If the alarm persists, contact your dealer or Huawei technical support. Cause ID = 2 1. Check the impedance between the PV array output and the ground. If a short circuit occurs or the insulation is insufficient, rectify the fault. 2. If the alarm persists, contact your dealer or Huawei technical support. Internal Major fan abnormal Cause ID = 1�4 The internal fan is short-circuited, the power supply is insufficient, or the fan is damaged. Turn off the AC output switch and DC input switch, and then turn them on after 5 minutes. Wait for the inverter to connect to the power grid. If the alarm persists after 5 minutes, contact your dealer or Huawei technical support. Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 102 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual 9 Maintenance Contact your dealer or Huawei technical support if all troubleshooting procedures listed above are completed and the fault still exists. Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 103 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual 10 Handling the Inverter 10 Handling the Inverter 10.1 Removing the SUN2000 Before removing the SUN2000, disconnect both AC and DC connections. Perform the following operations to remove the SUN2000: 1. Disconnect all cables from the SUN2000, including RS485 communications cables, DC input power cables, AC output power cables, and PGND cables. 2. Remove the SUN2000 from the mounting bracket. 3. Remove the mounting bracket. 10.2 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. 10.3 Disposing of the SUN2000 If the SUN2000 service life expires, dispose of it according to the local disposal rules for electrical equipment waste. Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 104 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual 11 Technical Specifications 11 Technical Specifications 11.1 SUN2000 V100 Spare Parts Technical Data Efficiency Technical SUN2000-15K SUN2000-17K SUN2000-20K SUN2000-23K SUN2000-28K Specifications TL-M3 TL-M3 TL TL-M3 TL-M3 Maximum efficiency 98.55% 98.57% 98.65% 98.65% 98.63% European efficiency 98.08% 98.14% 98.22% 98.27% 97.92% Input Technical SUN2000-15K SUN2000-17K SUN2000-20K SUN2000-23K SUN2000-28K Specifications TL-M3 TL-M3 TL TL-M3 TL-M3 Maximum input 1100 V voltagea Maximum input 26 A current (per MPPT) Maximum 40 A short-circuit current (per MPPT) Minimum 200 V startup voltage MPP voltage range 200 V�1000 V Maximum 8 number of Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 105 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual 11 Technical Specifications Technical Specifications inputs SUN2000-15K TL-M3 SUN2000-17K TL-M3 SUN2000-20K TL SUN2000-23K TL-M3 SUN2000-28K TL-M3 Number of 4 MPPTs Note a: The maximum input voltage is the maximum DC input voltage that the SUN2000 can withstand. If the input voltage exceeds this value, the SUN2000 may be damaged. Output Technical SUN2000-15K SUN2000-17K SUN2000-20K SUN2000-23K SUN2000-28K Specifications TL-M3 TL-M3 TL TL-M3 TL-M3 Rated output power 15,000 W 17,000 W 20,000 W 23,000 W 27,500 W Maximum 16,500 VA apparent power 18,700 VA 22,000 VA 23,000 VA 27,500 VA Maximum active power (cos = 1) 16,500 W 18,700 W 22,000 W 23,000 W 27,500 W Rated output voltage 220�230 V/380�400 V, 3W+N+PE 277 V AC/480 V AC, 3W+PE Maximum output voltage at long-term operation See standards about the local power grid. Maximum 25.2 A output current 28.5 A 33.5 A 35.1 A 33.5 A Output voltage 50 Hz/60 Hz frequency Power factor 0.8 leading�0.8 lagging Maximum total harmonic distortion (THD) AC THDi < 3% (at the rated power) Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 106 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual 11 Technical Specifications Protection Technical SUN2000-15K SUN2000-17K SUN2000-20K SUN2000-23K SUN2000-28K Specifications TL-M3 TL-M3 TL TL-M3 TL-M3 Input DC switch Supported Islanding protection Supported Output overcurrent protection Supported Input reverse connection protection Supported PV string fault Supported detection DC surge protection Type II AC surge protection Type II Insulation resistance detection Supported Residual current Supported monitoring unit (RCMU) Display and Communication Technical SUN2000-15K SUN2000-17K SUN2000-20K SUN2000-23K SUN2000-28K Specifications TL-M3 TL-M3 TL TL-M3 TL-M3 Display LED indicators; WLAN+App RS485 Supported Built-in WLAN Supported AFCI Optional General Specifications Technical SUN2000-15K SUN2000-17K SUN2000-20K SUN2000-23K SUN2000-28K Specifications TL-M3 TL-M3 TL TL-M3 TL-M3 Dimensions (W 640 mm x 530 mm x 270 mm Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 107 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual 11 Technical Specifications Technical Specifications x H x D) SUN2000-15K TL-M3 SUN2000-17K TL-M3 SUN2000-20K TL SUN2000-23K TL-M3 SUN2000-28K TL-M3 Net weight 43 kg Operating temperature �25�C to +60�C Relative humidity 0%�100% Cooling mode Natural convection Maximum operating altitude 3000 m IP rating IP66 Topology Transformerless Standards Compliance Technical SUN2000-15K SUN2000-17K SUN2000-20K SUN2000-23K SUN2000-28K Specifications TL-M3 TL-M3 TL TL-M3 TL-M3 Standards EN/IEC62109-1, EN/IEC62109-2, NB/T32004-2013 11.2 SUN2000 V200R001 Spare Parts Technical Data Efficiency Technical Specifications SUN2000-25KTL- SUN2000-30KTL- SUN2000-30KTL- SUN2000-36KTL- NAM3 NAM3 M3 M3 Maximum efficiency 98.75% 98.75% 98.65% (400 V AC) 98.75% 98.75% (480 V AC) European efficiency 98.29% 98.45% 98.40% (400 V AC) 98.5% 98.45% (480 V AC) Chinese efficiency / / 98% (380V 98.18% AC/400V AC) Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 108 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual 11 Technical Specifications Input Technical Specifications SUN2000-25KTL- SUN2000-30KTL- SUN2000-30KTL- SUN2000-36KTL- NAM3 NAM3 M3 M3 Maximum input voltagea 1000 V 1100 V Maximum input 26 A current (per MPPT) Maximum 40 A short-circuit current (per MPPT) Minimum startup voltage 200 V MPP voltage range 200 V�1000 V Maximum number 8 of inputs Number of MPPTs 4 Note a: The maximum input voltage is the maximum DC input voltage that the SUN2000 can withstand. If the input voltage exceeds this value, the SUN2000 may be damaged. Output Technical Specifications SUN2000-25KTL- SUN2000-30KTL- SUN2000-30KTL- SUN2000-36KTL- NAM3 NAM3 M3 M3 Rated output power 25,000 W 30,000 W 30,000 W 36,000 W Maximum apparent 27,500 VA power 33,000 VA 33,000 VA 40,000 VA Maximum active power (cos = 1) 25,000 W 30,000 W 33,000 W (can be set to 30,000 W) 40,000 W Rated output voltage 277/480 V, 3W/N+PE 480 V 220 V/380 V, 3W+(N)+PE 230 V/400 V, 3W+(N)+PE 277 V/480 V, 3W+PE 277 V/480 V, 3W+PE Maximum output See standards about the local power grid. voltage at long-term operation Maximum output current 33 A 40 A 50.4 A/380 V 47.9 A/400 V 39.9 A/480 V 48.4 A Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 109 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual 11 Technical Specifications Technical Specifications SUN2000-25KTL- SUN2000-30KTL- SUN2000-30KTL- SUN2000-36KTL- NAM3 NAM3 M3 M3 Output voltage frequency 60 Hz 50 Hz/60 Hz Power factor 0.8 leading�0.8 lagging Maximum total harmonic distortion (THD) AC THDi < 3% (at the rated power) Protection Technical Specifications SUN2000-25KTL- SUN2000-30KTL- SUN2000-30KTL- SUN2000-36KTL- NAM3 NAM3 M3 M3 Input DC switch Supported Islanding protection Supported Output overcurrent Supported protection Input reverse connection protection Supported PV string fault detection Supported DC surge protection Type II AC surge protection Type II Insulation Supported resistance detection Residual current monitoring unit (RCMU) Supported Display and Communication Technical Specifications SUN2000-25KTL- SUN2000-30KTL- SUN2000-30KTL- SUN2000-36KTL- NAM3 NAM3 M3 M3 Display LED and WLAN+app RS485 Supported Built-in WLAN / Supported Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 110 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual 11 Technical Specifications Technical Specifications AC MBUS AFCI SUN2000-25KTL- SUN2000-30KTL- SUN2000-30KTL- SUN2000-36KTL- NAM3 NAM3 M3 M3 Optional Supported Optional General Specifications Technical Specifications SUN2000-25KTL- SUN2000-30KTL- SUN2000-30KTL- SUN2000-36KTL- NAM3 NAM3 M3 M3 Dimensions (W x H 640 mm x 530 mm x 270 mm x D) Net weight 43 kg Operating temperature �25�C to +60�C Relative humidity 0%�100% (non-condensing) Cooling mode Natural convection Maximum operating altitude 3000 m IP rating Type 4X IP66 Topology Transformerless Standards Compliance Technical Specifications SUN2000-25KTL- SUN2000-30KTL- SUN2000-30KTL- SUN2000-36KTL- NAM3 NAM3 M3 M3 Standards EN/IEC62109-1, EN/IEC62109-2, NB/T32004-2013 11.3 SUN2000 V200R002 Spare Parts Technical Data Efficiency Techni cal Specifi cations SUN20 00-29.9 KTL-M 3 SUN20 00-30K TL-M3 SUN20 00-36K TL-M3 SUN20 00-42K TL-M3 SUN20 00-43K TL-IN M3 SUN20 00-50K TL-M3 SUN20 00-33K TL-NA M3 SUN20 00-36K TL-NA M3 SUN20 00-40K TL-NA M3 Maximu 98.65% 98.65% 98.65% 98.75% 98.75% 98.75% 98.75% 98.75% 98.75% Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 111 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual 11 Technical Specifications Techni cal Specifi cations m efficienc y SUN20 00-29.9 KTL-M 3 SUN20 00-30K TL-M3 SUN20 00-36K TL-M3 (380 Vac/400 V AC) 98.75% (480 V AC) SUN20 00-42K TL-M3 SUN20 00-43K TL-IN M3 SUN20 00-50K TL-M3 SUN20 00-33K TL-NA M3 SUN20 00-36K TL-NA M3 SUN20 00-40K TL-NA M3 Europea n efficienc y 98.4% 98.4% 98.40% (380 V AC/400 V AC) 98.50% (480 V AC) 98.48% 98.47% 98.46% 98.45% (480 V AC) 98.5% (480 V AC) 98.5% (480 V AC) Chinese / / / / / 98.17% / / / efficienc y CEC / / / / / / 98.13% 98.13% 98.13% efficienc y Input Techni cal Specifi cations SUN20 00-29.9 KTL-M 3 SUN20 00-30K TL-M3 SUN20 00-36K TL-M3 SUN20 00-42K TL-M3 SUN20 00-43K TL-IN M3 SUN20 00-50K TL-M3 SUN20 00-33K TL-NA M3 SUN20 00-36K TL-NA M3 SUN20 00-40K TL-NA M3 Maximu 1100 V m input voltagea 1000 V Maximu 26 A m input current (per MPPT) Maximu 40 A m short-cir cuit current (per MPPT) Minimu 200 V Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 112 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual 11 Technical Specifications Techni cal Specifi cations m startup voltage SUN20 00-29.9 KTL-M 3 SUN20 00-30K TL-M3 SUN20 00-36K TL-M3 SUN20 00-42K TL-M3 SUN20 00-43K TL-IN M3 SUN20 00-50K TL-M3 SUN20 00-33K TL-NA M3 SUN20 00-36K TL-NA M3 SUN20 00-40K TL-NA M3 MPP voltage range 200 V�1000 V Rated / 620 V / 720 V 750 V / / / 720 V input voltage Maximu 8 m number of inputs Number 4 of MPPTs Note a: The maximum input voltage is the maximum DC input voltage that the SUN2000 can withstand. If the input voltage exceeds this value, the SUN2000 may be damaged. Output Techni cal Specifi cations SUN20 00-29.9 KTL-M 3 SUN20 00-30K TL-M3 SUN20 00-36K TL-M3 SUN20 00-42K TL-M3 SUN20 00-43K TL-IN M3 SUN20 00-50K TL-M3 SUN20 00-33K TL-NA M3 SUN20 00-36K TL-NA M3 SUN20 00-40K TL-NA M3 Rated output power 29,900 30,000 36,000 W W W 42,000 W 43,000 W 46,000 W (480 V) 47,500 W (500 V) 33,300 W 36,000 40,000 W W Maximu m apparent power 29,900 VA 33,000 VA 40,000 VA 47,000 VA 52,500 VA 50,500 W (480 V) 52,500 W (500 V) 36,600 VA 40,000 VA 44,000 VA Maximu m active power (cos = 29,900 W 30,000 W 40,000 W (can be set to 36,000 47,000 W (can be set to 42,000 52,500 W 50,500 W (480 V 52,500 36,600 W 40,000 W 44,000 W Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 113 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual 11 Technical Specifications Techni cal Specifi cations 1) SUN20 00-29.9 KTL-M 3 SUN20 00-30K TL-M3 SUN20 00-36K TL-M3 W) SUN20 00-42K TL-M3 W) SUN20 00-43K TL-IN M3 SUN20 00-50K TL-M3 W (500 V) SUN20 00-33K TL-NA M3 SUN20 00-36K TL-NA M3 SUN20 00-40K TL-NA M3 Rated output voltage 230 V/400 V, 3W+(N)+PE 220 V/380 V, 3W+(N) +PE 230 V/400 V, 3W+(N) +PE 277 V/480 V, 3W+PE 277 V/480 V, 3W+PE 288 V/500 V, 3W+PE 277 V/480 V, 3W+PE 288 V/500 V, 3W+PE 277 V/480 V, 3W+PE/3W+N+PE Maximu m output voltage at long-ter m operatio n See standards about the local power grid. Rated / / / / 49.7 A 55.3 40.1 A 43.4 A 48.2 A output A/480 V current 54.9 A/500 V Maximu 43.2 A 48 A m output current 61.1 A/380 V 58.0 A/400 V 52.8 A/440 V (Mexico ) 48.4 A/480 V 56.6 A/480 V 60.7 A 60.8 A/480 V 60.8 A/500 V 44.1 A 48.2 A 53 A Output voltage frequenc y 50 Hz/60 Hz 50 Hz 60 Hz Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 114 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual 11 Technical Specifications Techni cal Specifi cations SUN20 00-29.9 KTL-M 3 SUN20 00-30K TL-M3 SUN20 00-36K TL-M3 SUN20 00-42K TL-M3 SUN20 00-43K TL-IN M3 SUN20 00-50K TL-M3 SUN20 00-33K TL-NA M3 SUN20 00-36K TL-NA M3 SUN20 00-40K TL-NA M3 Power factor 0.8 leading�0.8 lagging Maximu m total harmoni c distortio n (THD) AC THDi < 3% (at the rated power) Protection Techni cal Specifi cations SUN20 00-29.9 KTL-M 3 SUN20 00-30K TL-M3 SUN20 00-36K TL-M3 SUN20 00-42K TL-M3 SUN20 00-43K TL-IN M3 SUN20 00-50K TL-M3 SUN20 00-33K TL-NA M3 SUN20 00-36K TL-NA M3 SUN20 00-40K TL-NA M3 Input DC switch Supported Islandin g protectio n Supported Output overcurr ent protectio n Supported Input reverse connecti on protectio n Supported PV string fault detectio n Supported DC surge Type II Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 115 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual 11 Technical Specifications Techni cal Specifi cations protectio n SUN20 00-29.9 KTL-M 3 SUN20 00-30K TL-M3 SUN20 00-36K TL-M3 SUN20 00-42K TL-M3 SUN20 00-43K TL-IN M3 SUN20 00-50K TL-M3 SUN20 00-33K TL-NA M3 SUN20 00-36K TL-NA M3 SUN20 00-40K TL-NA M3 AC surge protectio n Type II Insulatio n resistanc e detectio n Supported Residual current monitori ng unit (RCMU ) Supported Display and Communication Techni cal Specifi cations SUN20 00-29.9 KTL-M 3 SUN20 00-30K TL-M3 SUN20 00-36K TL-M3 SUN20 00-42K TL-M3 SUN20 00-43K TL-IN M3 SUN20 00-50K TL-M3 SUN20 00-33K TL-NA M3 SUN20 00-36K TL-NA M3 SUN20 00-40K TL-NA M3 Display LED and WLAN+app RS485 Supported Optional Supported Built-in Supported / WLAN AC Supported MBUS AFCI Optional / Supported Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 116 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual 11 Technical Specifications General Specifications Techni cal Specifi cations SUN20 00-29.9 KTL-M 3 SUN20 00-30K TL-M3 SUN20 00-36K TL-M3 SUN20 00-42K TL-M3 SUN20 00-43K TL-IN M3 SUN20 00-50K TL-M3 SUN20 00-33K TL-NA M3 SUN20 00-36K TL-NA M3 SUN20 00-40K TL-NA M3 Dimensi 640 mm x 530 mm x 270 mm ons (W x H x D) Net 43 kg weight Operatin g temperat ure �25�C to +60�C Relative 0%�100% (non-condensing) humidit y Cooling Natural convection mode Maximu m operatin g altitude 3000 m IP rating IP66 Type 4X Topolog Transformerless y Standards Compliance Techni cal Specifi cations SUN20 00-29.9 KTL-M 3 SUN20 00-30K TL-M3 SUN20 00-36K TL-M3 SUN20 00-42K TL-M3 SUN20 00-43K TL-IN M3 SUN20 00-50K TL-M3 SUN20 00-33K TL-NA M3 SUN20 00-36K TL-NA M3 SUN20 00-40K TL-NA M3 Standard EN/IEC62109-1, EN/IEC62109-2, NB/T32004-2013 s Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 117 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual A Grid Code A Grid Code The grid codes are subject to change. The listed codes are for reference only. No. Grid Code Description 1 VDE-AR-N-4105 Germany LV power grid 2 RD1699/661 Spain LV power grid 3 UTE C 15-712-1(A) France mainland power grid 4 UTE C 15-712-1(B) France island power grid 5 UTE C 15-712-1(C) France island power grid 6 UTE C 15-712-1-MV480 France island power grid 7 EN50549-LV Ireland, Netherlands, Poland, Switzerland, Hungary, Luxembourg, Czech Republic, Turkey, Sweden, Slovakia, Denmark, Norway, and Portugal 8 EN50549-MV400 Europe 9 EN50549-MV480 Ireland MV power grid 10 C10/11 Belgium 11 C11/C10-MV480 Belgium MV power grid 12 CEI0-16 Italy 13 CEI0-16-MV480 Italy MV 14 CEI0-21 Italy 15 CEI0-21-MV480 Italy MV 16 Austria Austria 17 Austria-MV480 Austria 18 G99-TYPEA-LV UK Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 118 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual No. Grid Code 19 G99-TYPEB-LV 20 G99-TYPEB-HV 21 G99-TYPEB-HV-MV480 22 G99-TYPEA-HV 23 ABNT NBR 16149 24 ABNT NBR 16149-MV480 25 Philippines 26 Philippines-MV480 27 TAI-PEA 28 TAI-PEA-MV480 29 TAI-MEA 30 TAI-MEA-MV480 31 AS4777 32 AS4777-MV480 33 IEC61727 34 IEC61727-MV480 35 IEC61727-60Hz 36 IEC61727-60Hz-MV480 37 IEC61727-50Hz-MV500 38 INDIA 39 INDIA-MV500 40 NRS-097-2-1 41 NRS-097-2-1-MV480 42 DUBAI 43 DUBAI-MV480 44 VDE-AR-N4110 45 VDE-AR-N4110-MV480 A Grid Code Description UK UK UK UK Brazil Brazil MV power grid Philippines LV power grid Philippines MV power grid Thailand grid-tied standard power grid Thailand MV grid-tied power grid (PEA) Thailand grid-tied standard power grid Thailand MV grid-tied power grid (MEA) Australia Australia MV IEC 61727 LV grid-tied power grid (50 Hz) IEC 61727 MV grid-tied power grid (50 Hz) IEC 61727 LV grid-tied power grid (60 Hz) IEC 61727 MV grid-tied power grid (60 Hz) India 500 V MV India LV power grid India MV power grid South Africa standard power grid South Africa MV Dubai LV power grid Dubai MV Europe Europe Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 119 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual B Setting the SUN2000 Output Mode B Setting the SUN2000 Output Mode If the output mode set for the SUN2000 is inconsistent with the actual cable connection mode, the SUN2000 reports an Abnormal Grounding alarm. In this case, you need to change the output mode of the SUN2000. Procedure Step 1 On the home screen, choose Settings > Grid parameters and set related parameters. Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 120 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual Figure B-1 Setting grid parameters B Setting the SUN2000 Output Mode ----End Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 121 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual C Setting Power Adjustment Parameters C Setting Power Adjustment Parameters Prerequisites You have logged in to the app as installer. Procedure Step 1 On the home screen, tap Power Adjustment and set power parameters as required. Figure C-1 Setting Power Adjustment Parameters ----End Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 122 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual D Built-in PID Recovery D Built-in PID Recovery Ensure that the inverter ground cable is securely connected. Otherwise, the built-in PID repair function will be affected and electric shocks may occur. Prerequisites You have logged in to the app as installer. Procedure Step 1 On the home screen, choose Settings > Feature Parameters and set related parameters. Figure D-1 Setting PID suppression parameters Set PID running mode to Repair (disabled by default). Set Nighttime off-grid repair to mode is set to Repair). (this parameter is displayed when Built-in PID running Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 123 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual ----End D Built-in PID Recovery Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 124 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual E Resetting Password E Resetting Password Step 1 Check that the AC and DC power supplies to the solar inverter are connected simultaneously, and that the and indicators are steady green or blink slowly for more than 3 minutes. Step 2 Turn off the AC switch, set the DC switch at the bottom of the solar inverter to OFF, and wait until all indicators on the solar inverter panel turn off. Step 3 Complete the following operations within 3 minutes: 1. Turn on the AC switch and wait until the indicator blinks. 2. Turn off the AC switch and wait until all indicators on the solar inverter panel turn off. 3. Turn on the AC switch and wait until all LED indicators on the inverter panel blink and turn off after about 30s. Step 4 Wait until the three indicators on the inverter panel blink green quickly and then blink red quickly, indicating that the password has been restored. Step 5 Reset the password within 10 minutes. (If no operation is performed within 10 minutes, all parameters of the solar inverter remain the same as those before the reset.) 1. Wait until the indicator blinks. 2. Obtain the initial WLAN hotspot name (SSID) and initial password (PSW) from the label on the side of the solar inverter to connect to the app. 3. On the login page, set a new login password and log in to the app. Step 6 Set router and management system parameters to implement remote management. ----End You are advised to reset the password in the morning or at night when the solar irradiance is low. Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 125 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual F Setting Dry Contact Scheduling Parameters F Setting Dry Contact Scheduling Parameters Prerequisites You have logged in to the app as installer. Procedure Step 1 On the home screen, choose Settings > Power adjustment and set Dry contact scheduling to . Figure F-1 Setting dry contact scheduling parameters ----End Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 126 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual G AFCI G AFCI Function If PV modules or cables are not properly connected or damaged, electric arcs may occur, which may cause fire. Huawei SUN2000s provide unique arc detection in compliance with UL 1699B-2018 to ensure the safety of users' lives and property. This function is enabled by default. The SUN2000 automatically detects arc faults. To disable this function, log in to the FusionSolar app, enter the Device Commissioning screen, choose Settings > Feature parameters, and disable AFCI. Clearing Alarms The AFCI function involves the DC arc fault alarm. The SUN2000 has the AFCI alarm automatic clearance mechanism. If an alarm is triggered for less than five times within 24 hours, the SUN2000 automatically clears the alarm. If the alarm is triggered for five times or more within 24 hours, the SUN2000 locks for protection. You need to manually clear the alarm on the SUN2000 so that it can work properly. You can manually clear the alarm as follows: Method 1: FusionSolar App Log in to the FusionSolar app and choose My > Device Commissioning. On the Device Commissioning screen, connect and log in to the SUN2000 that generates the AFCI alarm, tap Alarm management, and tap Clear on the right of the DC arc fault alarm to clear the alarm. Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 127 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual Figure G-1 Alarm management G AFCI Method 2: FusionSolar Smart PV Management System Log in to the FusionSolar Smart PV Management System using a non-owner account, choose Intelligent O&M > Alarm Management, select the DC arc fault alarm, and click Clear to clear the alarm. Figure G-2 Clearing alarms Switch to the owner account with PV plant management rights. On the home page, click the PV plant name to go to the PV plant page, and click OK as prompted to clear the alarm. Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 128 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual Figure G-3 Owner confirmation G AFCI Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 129 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual H Smart I-V Curve Diagnosis H Smart I-V Curve Diagnosis For details, see FusionSolar 6.0 Smart PV Management System Smart I-V Curve Diagnosis User Manual. Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 130 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual I FCC Supplier's Declaration of Conformity (SDoC) I FCC Supplier's Declaration of Conformity (SDoC) This equipment is intended to be used at locations where the separation distance to third party sensitive radio services is > 30 m. For FCC application Version This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense. MPE Requirements To satisfy FCC RF exposure requirements, a separation distance of 20 cm or more should be maintained between the antenna of this device and persons during device operation. To ensure compliance, operations at closer than this distance is not recommended. Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 131 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual J IC Supplier's Declaration of Conformity (SDoC) J IC Supplier's Declaration of Conformity (SDoC) For IC application Version This device complies with Industry Canada's licence-exempt RSSs. Operation is subject to the following two conditions: (1) This device may not cause interference; and (2) This device must accept any interference, including interference that may cause undesired operation of the device. Le pr�sent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation est autoris�e aux deux conditions suivantes : (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radio�lectrique subi, m�me si le brouillage est susceptible d'en compromettre le fonctionnement. MPE Requirements To satisfy IC RF exposure requirements, a separation distance of 20 cm or more should be maintained between the antenna of this device and persons during device operation. To ensure compliance, operations at closer than this distance is not recommended. Les antennes install�es doivent �tre situ�es de facon � ce que la population ne puisse y �tre expos�e � une distance de moin de 20 cm. Installer les antennes de facon � ce que le personnel ne puisse approcher � 20 cm ou moins de la position centrale de l'antenne. La FCC des �ltats-unis stipule que cet appareil doit �tre en tout temps �loign� d'au moins 20 cm des personnes pendant son functionnement. Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 132 Replacing SUN2000-(15KTL-50KTL) Series with SUN2000-(15KTL-50KTL)-M3 Series User Manual K Acronyms and Abbreviations K Acronyms and Abbreviations A AFCI L LED M MBUS MPP MPPT P PE PID PV R RCD arc-fault circuit interrupter light emitting diode monitoring bus maximum power point maximum power point tracking protective earthing potential induced degradation photovoltaic residual current device Issue 01 (2021-04-05) Copyright � Huawei Technologies Co., Ltd. 133