Sofar solar HYD 3K-EP User Manual
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Sofar solar HYD 3K-EP User Manual

Energy storage integrated inverter
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User manual
Energy storage integrated inverter
Product Model: HYD 3K~6K-EP
S h e n z h e n S O FA R S O L A R C o . , L t d .

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Summary of Contents for Sofar solar HYD 3K-EP

  • Page 1 User manual Energy storage integrated inverter Product Model: HYD 3K~6K-EP S h e n z h e n S O FA R S O L A R C o . , L t d .

  • Page 2: Table Of Contents

    User manual HYD 3K~6K-EP Content Preface......................II 1. Basic safety information..............- 1 - 1.1. Safety instructions..............- 1 - 1.2. Symbols and signs..............- 4 - 2. Product characteristics................ - 6 - 2.1. Product informations...............- 6 - 2.2. Size description............... - 6 - 2.3.
  • Page 3 SOFARSOLAR reserves the right of final interpretation.This manual is subject to change according to user’s or customer’s feedback.Please check our website at http://www.sofarsolar.com for latest version. The current Version updated at 20210310. Copyright © Shenzhen SOFAR SOLAR Co., Ltd.

  • Page 4: Preface

    You must understand these emphasized information to avoid the personal injury and property loss.Please read the following symbols used in this manual carefully. Copyright © Shenzhen SOFAR SOLAR Co., Ltd.
  • Page 5 Caution Attention indicates potential risks which, if not avoided, may lead to equipment fault or property damage. Attention Note provides tips that are valuable for the optimal operation of the product. Note Copyright © Shenzhen SOFAR SOLAR Co., Ltd.

  • Page 6: Basic Safety Information

    User manual HYD 3K~6K-EP 1. Basic safety information 1.1. Safety instructions Read and understand the instructions of this manual, and be familiar with relevant safety symbols in this chapter, then start to install and troubleshoot the equipment. According to the national and state requirements, before connecting to the electrical grid, you must get permission from the local electrical grid operation can only be performed by qualified electrical engineer.
  • Page 7 User manual HYD 3K~6K-EP etc.), and ensure that inverter is vertical placed. Choose a place suitable for installing electrical devices. And assure there is enough fire exit space, convenient for maintenance. Maintain proper ventilation to ensure enough air cycle to cool the inverter.
  • Page 8 User manual HYD 3K~6K-EP All installation accomplished only by professional electrical engineer! Must be trained; Completely read the manual operation and understand Warning relevant matter. Get permission from the local electrical gird operator, complete all electrical connections by professional electrical engineer, then connect inverter to electrical grid.

  • Page 9: Symbols And Signs

    User manual HYD 3K~6K-EP to electromagnetic noise of external system.Noise emission level: influence of electromagnetic emission upon environment. Electromagnetic radiation from inverter may be harmful to health! Please do not continue to stay around the inverter in less than 20 Danger cm when inverter is working.
  • Page 10 User manual HYD 3K~6K-EP This indicates the degree of protection of the equipment according to IEC standard 70-1 (EN 60529 June 1997). Positive pole and negative pole of the input voltage (DC). This side up, HYD 3K~6K-EP inverter must always be transported, handled and stored in such a way that the arrows always point upwards.

  • Page 11: Product Characteristics

    User manual HYD 3K~6K-EP 2. Product characteristics 2.1. Product informations HYD 3K~6K-EP inverter is a single-phase photovoltaic energy storage inverter integrating grid-connected photovoltaic inverter and battery energy storage. The HYD 3K~6K-EP inverter has a variety of built-in operating modes to suit the diverse user needs.

  • Page 12: Function Characteristics

    User manual HYD 3K~6K-EP Front view left view Bracket ① ② ③ 2.3. Function characteristics The HYD 3K~6K-EP energy storage inverters allow up to 10% overloading to maximize power output, and the Uninterruptible Power Supply (UPS) mode can support inductive loads such as air conditioners or refrigerators with an automatic switchover time of less than 10 milliseconds.
  • Page 13 User manual HYD 3K~6K-EP - 8 - Copyright © Shenzhen SOFARSOLAR Co., Ltd。...

  • Page 14: Installation

    User manual HYD 3K~6K-EP 3. Installation Installation notes Do NOT install the HYD 3K~6K-EP on flammable material. Do NOT install the HYD 3K~6K-EP in an area used to store Flammable or explosive material. Danger The enclosure and heat sink are very hot while the inverter is working, therefore do NOT install the HYD 3K~6K-EP in places where you might touch them inadvertently.
  • Page 15 User manual HYD 3K~6K-EP Rear panel 1pcs PV+ input terminal 2pcs PV- input terminal 2pcs Metal terminals secured to PV+ input power 2pcs cables Metal terminals secured to PV- input power 2pcs cables BAT- input terminal 1pcs BAT+input terminal 1pcs M6 Hexagon screws 3pcs M8*80 Expansion bolts used...

  • Page 16: Product Overview

    User manual HYD 3K~6K-EP Split Core Current 1pcs Transformer COM 16pin connector 1pcs Communication cable 1pcs DDSU666 Single-phase electronic type guide 1pcs(optional) rail mounting electric energy meter Manual 1pcs The warranty card 1pcs Quality Certificate 1pcs M4X14 Cross round head triple set screw（Only for DC 1pcs switch lock）...

  • Page 17: Tools

    User manual HYD 3K~6K-EP Fig.3-2 HYD 3K~6K-EP inverter overview Table 3-2 HYD 3K~6K-EP inverter overview Battery input terminals DC switch Grid connection port PV input terminals Load connection port USB/WiFi switch lock （ For Link Port 0 Australian models） Link Port 1 *Note: Lock the screw to limit the torque of the DC switch, making it impossible to twist the DC switch from OFF to ON, or ON to OFF.Remove the screw before turning the DC switch from OFF to ON or ON to OFF.

  • Page 18: Installation Environment

    User manual HYD 3K~6K-EP Wire stripper Strip wire 4mm Allen Turn the screw to connect rear panel Wrench with inverter. Crimping tool Used to crimp power cables Multi-meter Used to check grounding With an open end of larger than or greater Used to tighten expansion bolts than 32 mm Marker...

  • Page 19: Determining The Installation Position

    User manual HYD 3K~6K-EP 3.5. Determining the Installation Position Determine an appropriate position for installing the HYD 3K~6K-EP inverter. Comply with the following requirements when determining the installation position. Fig. 3-3 Installation Position of HYD 3K~6K-EP inverter ① ② ③ ④...

  • Page 20: Installing Hyd 3K~6K-Ep

    User manual HYD 3K~6K-EP inverter and hold the handles, as shown in Fig.3-4. Fig. 3-4 Moving the inverter ① ② Step 2 Lift the inverter from the packing case and move it to the installation position. To prevent device damage and personal injury, keep balance when moving the inverter because the inverter is heavy.
  • Page 21 User manual HYD 3K~6K-EP ① ② ③ ④ ⑤ - 16 - Copyright © Shenzhen SOFARSOLAR Co., Ltd。...

  • Page 22: Electrical Connections

    User manual HYD 3K~6K-EP 4. Electrical Connections Before performing electrical connections, ensure that the DC switch is OFF. Since the stored electrical charge remains in a capacitor after the DC switch is turned OFF. So it’s necessary to wait for at least 5 minutes for the capacitor to be electrically discharged.

  • Page 23: Wire Instructions

    User manual HYD 3K~6K-EP NOTE:The DVC is the voltage of a circuit which occurs continuously between any two live part in the worst-case rated operating condition when used as intended. Table 4-2 The decisive voltage class(DVC) Interface PV input port DVCC Grid connection port DVCC...
  • Page 24 User manual HYD 3K~6K-EP (PGND) cables for grounding purpose. The inverter is transformer-less, requires the positive pole and negative pole of the PV array are NOT grounded. Otherwise it will cause inverter failure. In the PV power system, all non current carrying metal parts (such as: PV module frame, PV rack, combiner box enclosure, Attention inverter enclosure) should be connected to earth.

  • Page 25: Pv Connection

    User manual HYD 3K~6K-EP 4.3. PV Connection Procedure: Step 1 Select the appropriate cable type and specifications according to the table4-3.Remove cable glands from the positive and negative connectors.( It is recommended that the positive and negative be distinguished by different colors). Step 2 Remove the insulation layer with an appropriate length from the positive and negative power cables by using a wire stripper as show in Fig.

  • Page 26: Battery Connection

    User manual HYD 3K~6K-EP ④ ⑤ ⑥ Disconnect PV connectors ⑦ 4.4. Battery Connection Fig. 4-3 Install battery connection ② ③ ① ⑥ ⑤ ④ - 21 - Copyright © Shenzhen SOFARSOLAR Co., Ltd。...

  • Page 27: Load Connection

    User manual HYD 3K~6K-EP 4.5. Load connection Procedure: Step 1 Select appropriate cables according to Table4-3, Remove the insulation layer of the load output cable using a wire stripper according to the figure shown below: A:15~25mm B:6~8mm . Step 2 Disassemble the load connector according to the figure shown below: insert the load output cable (with its insulation layer stripped according to step 1) through the waterproof locking cable gland .

  • Page 28: Grid Connection

    User manual HYD 3K~6K-EP ④ ③ ⑥ ⑤ Hold the button to unlock ⑦ 4.6. Grid connection Sofarsolar has already integrated RCMU (residual current monitoring unit) inside inverter, If an external RCD is required,a type-A RCD with rated residual current of 100mA or higher is suggested. Procedure: Step 1 Select the appropriate cable type and specifications according to the table4-3.Refer to Fig.
  • Page 29 User manual HYD 3K~6K-EP in Fig. ⑥ Step 5 Connect the connected load terminal to the inverter load port, and push the terminal forward until the sound of "click" is heard, and the terminal connection is completed，as shown in Fig ⑦⑧...

  • Page 30: External Communication Interface

    User manual HYD 3K~6K-EP ⑪ ⑩ 4.7. External communication interface 4.7.1 USB/WIFI communication interface Fig.4-6 USB/WIFI communication interface ① ② ③ Table 4-4 Interface description Definition Function Note GND.S USB power - The USB power supply is USB data + 5V/1A;...
  • Page 31 User manual HYD 3K~6K-EP Fig 4-8 The operation information (generated energy, alert, operation status) of the inverter can be transferred to PC or uploaded to the server via WiFi/GPRS Users can choose to use web or APP for monitoring and viewing according to their needs. They need to register an account and bind the device with the WiFi/GPRS SN number.
  • Page 32 User manual HYD 3K~6K-EP negative electrode grid The current sensor outputs a positive electrode RS485-B RS485 differential signal + Meter communication RS485-A RS485 differential signal – Fig.4-9 COM interface ① ② ③ ④ ⑤ 1. RS485（ Wired monitoring or inverter cascade monitoring ）...
  • Page 33 User manual HYD 3K~6K-EP RS485 wires are connected in parallel between inverters, (NOTE ： When multiple inverters are connected via RS485 wires, set communication address to differentiate inverters ， please refer this manual<6.3.1System setting→8.Communication Addr>) Fig.4-11 RS485 connection(cascade of monitoring between inverters) 2.
  • Page 34 User manual HYD 3K~6K-EP Table 4-7 Function description of the terminal Pin NO. Pin name Description Connected to (RRCR) Relay contact 1 input K1 - Relay 1 output Relay contact 2 input K2 - Relay 2 output Relay contact 3 input K3 - Relay 3 output Relay contact 4 input K4 - Relay 4 output...
  • Page 35 User manual HYD 3K~6K-EP transformer. NOTE:The direction of the current transformer is shown in fig. ④. Fig.4-14 Meter ① ② ③ ④ If you need to use the CT alone, attach the CT to PIN13 and PIN14. There are two ways to get grid current information : Plan A:CT Plan B:Meter +CT - 30 -...
  • Page 36 User manual HYD 3K~6K-EP Fig. 4-15 Electrical connections (Plan A:CT) - 31 - Copyright © Shenzhen SOFARSOLAR Co., Ltd。...
  • Page 37 User manual HYD 3K~6K-EP Fig. 4-16 Electrical connections (Plan B:Meter +CT ) - 32 - Copyright © Shenzhen SOFARSOLAR Co., Ltd。...
  • Page 38 User manual HYD 3K~6K-EP 4.7.3 Link Port 0&1-Cascade communication interface Fig.4-17 Link Port ① ② ③ When using the parallel system, the inverter settings and notes please refer to this manual<6.3.2 Advanced setting→6.Parallel setting>. Note(AC LOAD is also parallel for parallel machines): The first and last inverters need to be connected with 8Pin connection terminals.

  • Page 39: Buttons And Indicator Lights

    User manual HYD 3K~6K-EP 5. Buttons and indicator lights Fig.5-1 Buttons and indicator lights 5.1. Buttons press “Back” to the previous screen or enter the main interface.  press “Up” to the upper menu option or value plus 1.  press “Down”...

  • Page 40: Operation

    User manual HYD 3K~6K-EP 6. Operation 6.1. Double Check Please double check the following before operation. Inverter is firmly fastened to the mounting bracket on the wall. PV+/PV- wires are firmly connected, polarity and voltage are correct. BAT+/BAT- wires are firmly connected, polarity and voltage are correct. DC isolator is correctly connected between battery &...
  • Page 41 User manual HYD 3K~6K-EP Table 6- 1 Set the parameters Parameter Note 1.OSD Language Option The default English. If you are connected to the host computer such 2.System time setting as collector or mobile phone APP, the time and confirmation should have been calibrated to the local time.

  • Page 42: Menu

    User manual HYD 3K~6K-EP France FAR Arrete23 Lithuania Poland CAUTION It’s very important to make sure that you have selected the correct country code according to requirements of local authority. Please consult qualified electrical engineer or personnel from electrical safety authorities about this. Shenzhen SOFARSOLAR Co., Ltd.
  • Page 43 User manual HYD 3K~6K-EP In the main interface, press “Down” button to enter grid/battery parameters page. Main interface Down↓ Grid Output Information Grid(V) ......***.*V AC Current ....**.**A Frequency....**.**Hz Battery Information (1) Batt (V).......****.*V Batt Chrs Curr....**.**A Batt DisChrs Curr..**.**A Down ↓...
  • Page 44 User manual HYD 3K~6K-EP 6.Software Update 6.3.1 System setting 1. System Setting 1.Language Settings 2.Time 3.Safety Param. 4.Energy Storage Mode 5.Auto Test(Only for Italy) 6.EPS Mode 7.Communication Addr. 1. Language Settings Used to set the menu display language. 1.Language Settings 1.中文...
  • Page 45 User manual HYD 3K~6K-EP If the battery is full(or already at Max generation < LOAD Charge Power), excess power will be consumption, it will discharge the exported to the grid. battery to supply power to load. If PV generation + Battery < LOAD consumption, inverter will import power from the grid.
  • Page 46 User manual HYD 3K~6K-EP possible using our Time-of-use mode. In summer, if your PV system can produce more electricity than your home electricity consumption. Then you don’t need to set an off-peak charge period to charge your battery in summer at all. You can select an effective date (normally winter) for Time-of-use mode in this case.
  • Page 47 User manual HYD 3K~6K-EP ↓ Wait Test 59.S2 OK! ↓ Wait Testing 27.S1... ↓ Wait Test 27.S1 OK! ↓ Wait Testing 27.S2... ↓ Wait Test 27.S2 OK! ↓ Wait Testing 81>S1... ↓ Wait Test 81>S1 OK! ↓ Wait Testing 81>S2… ↓...
  • Page 48 User manual HYD 3K~6K-EP ↓ Press “Down” 81>.S1 threshold 50.5Hz 100ms ↓ Press “Down” 81>.S1 49.9Hz 103ms ↓ Press “Down” 81>.S2 threshold 51.5Hz 100ms ↓ Press “Down” 81>.S2 49.9Hz 107ms ↓ Press “Down” 81<.S1 threshold 49.5Hz 100ms ↓ Press “Down” 81<.S1 50.0Hz 105ms ↓...
  • Page 49 User manual HYD 3K~6K-EP If PV generation < LOAD consumption If PV generation is normal,but LOAD (ΔP ＞ 100W), inverter will discharge consumption=0, the surplus power will be stored in the battery. battery. 7. Communication Addr 7.Communication Addr 1.Communication Addr 2.Baud Rate 6.3.2 Advanced setting 2.Advanced setting...
  • Page 50 User manual HYD 3K~6K-EP Depth of Discharge For example: if Discharge Depth = 50% & EPS Discharge Depth = 80%. While grid is connected: Inverter won’t discharge the battery when its SOC is less than 50%. In case of blackout: Inverter will work in EPS mode (if EPS mode is enabled) &...
  • Page 51 User manual HYD 3K~6K-EP 1.Clear Energy Data Input password OK Input 0001 Clean up the historical events recorded in the inverter. 2..Clear Events Clear Events? Parallel setting Please refer to <4.7.3 Link Port 0&1-Cascade communication interface> for the connection method of the parallel system. 6.Parallel setting 1.Parallel Control 2.Parallel Primary-Replica...
  • Page 52 User manual HYD 3K~6K-EP Discharge....***KWH Down↓ Month PV ......***KWH Load ......***KWH Export ......***KWH Import.......***KWH Charge.......***KWH Discharge....***KWH Down↓ Year PV ......***KWH Load ......***KWH Export ......***KWH Import.......***KWH Charge.......***KWH Discharge....***KWH Down↓ Lifetime PV ......***KWH Load ......***KWH Export ......***KWH Import.......***KWH Charge.......***KWH Discharge....***KWH 6.3.4 System information 4.System information 1.Inverter Info 2.Battery Info...
  • Page 53 User manual HYD 3K~6K-EP EPS Mode Down↓ Inverter Info (4) IV Curve Scan Logic Interface Control PF Time Setting QV Time Setting Down↓ Inverter Info (5) Power Factor Anti Reflux Insulation resistance 2.Battery Info Battery1/2 info(1) Battery Type Battery Capacity Over (V) Protection Discharge Depth Down↓...
  • Page 54 HYD-EP_ARM.bin, HYD-EP_DSPM.bin, HYD-EP_DSPS.bin. Step 1 Insert the usb flash drive into the compute. Step 2 SOFAR SOLAR will send the Software code to the user who needs to update. After user receive the file,please decompressing file and cover the original file in usb flash drive.
  • Page 55 User manual HYD 3K~6K-EP Step 8 After the update is completed,turn off the DC breaker, wait for the LCD screen extinguish, then restore the WiFi connection and then turn on the DC breaker and AC breaker again,the inverter will enters the running state. User can check the current software version in Systemlnfo>>SoftVersion.

  • Page 56: Troubleshooting

    User manual HYD 3K~6K-EP 7. Troubleshooting This section contains information and procedures for solving possible problems with the inverter. This section help users to identify the inverter fault. Please read the  following procedures carefully: Check the warning, fault messages or fault codes shown on the inverter ...
  • Page 57 User manual HYD 3K~6K-EP Table 7-1 Eventlist Code Name Description Solution The grid voltage is too If the alarm occurs occasionally, the ID001 GridOVP high possible cause is that the electric grid is abnormal occasionally. Inverter will The grid voltage is too ID002 GridUVP automatically return to normal operating...
  • Page 58 User manual HYD 3K~6K-EP ConsistentFault_ Leakage current ID029 GFCI consistency error ConsistentFault_ Grid voltage ID030 Vgrid consistency error SpiCommFault(D communication ID033 error (DC) SpiCommFault(A communication ID034 error (AC) ID035 SChip_Fault Chip error (DC) ID036 MChip_Fault Chip error (AC) HwAuxPowerFau Auxiliary power error ID037 ID041 RelayFail...
  • Page 59 User manual HYD 3K~6K-EP unbalanced If no, please contact technical support. Busbar undervoltage ID067 BusUVP during grid-connection ID068 BusZVP Bus voltage low PV over-voltage Check whether the PV series voltage (Voc) is higher than the maximum input voltage of the inverter. If so, adjust the number of ID069 PVOVP PV modules in series and reduce the PV...
  • Page 60 User manual HYD 3K~6K-EP too high. there is no direct sunlight. Please ensure that the inverter is installed in a cool/well ventilated place. Ensure the inverter is installed vertically and the ambient temperature is below the inverter temperature limit. AC frequency is too Please make sure the grid frequency and ID114 FreqDerating...
  • Page 61 User manual HYD 3K~6K-EP Fault EEPROM error inverter. Check whether the problem is solved. Communication board ID150 FlashFault If no, please contact technical support. FLASH error SciCommLose(D communication ID153 error (DC) SciCommLose(A communication ID154 error (AC) SciCommLose(F communication ID155 use) error (Fuse) Inconsistent software...
  • Page 62 User manual HYD 3K~6K-EP brush. Do NOT clean the inverter with water, corrosive chemicals, detergent, etc. Heat sink cleaning  For the long-term proper operation of inverters, ensure there is enough space around the heat sink for ventilation, check the heat sink for blockage (dust, snow, etc.) and clean them if they exist.

  • Page 63: Technical Data

    User manual HYD 3K~6K-EP 8. Technical Data Battery Parameters Datasheet 3000-EP 3680-EP 4000-EP 4600-EP 5000-EP 5500-EP 6000-EP Battery type Lithium-ion, Lead-acid Nominal battery voltage Battery voltage 42-58V range Battery capacity 50-2000Ah Maximum charging / 3750W 4000W 4250W 5000W 5000W 5000W 5000W discharging power...
  • Page 64 User manual HYD 3K~6K-EP PV String Input Data Datasheet 3000-EP 3680-EP 4000-EP 4600-EP 5000-EP 5500-EP 6000-EP Recommended Max. PV input 4500Wp 5400Wp 6000Wp 6900Wp 7500Wp 7500Wp 9000Wp power(Wp) Max. DC power 3500W 3500W 3500W 3500W 3750W 3750W 4500W for single MPPT Max.
  • Page 65 User manual HYD 3K~6K-EP AC Output Data (ON-Grid ) Datasheet 3000-EP 3680-EP 4000-EP 4600-EP 5000-EP 5500-EP 6000-EP Nominal AC 3000 3680 4000 4600 5000 5000 6000 power（W） Max. AC power output to utility 3300 3680 4400 4600 5000 5500 6000 grid（VA）...
  • Page 66 User manual HYD 3K~6K-EP AC Output Data (Off-Grid ) Datasheet 3000-EP 3680-EP 4000-EP 4600-EP 5000-EP 5500-EP 6000-EP Max. apparent 3000 3680 4000 4600 5000 5000 5000 power（VA） Peak output 3600VA, 4400VA, 4800VA, 5520VA, 6000VA, 6000VA, 6000VA, power,Duration Max. output 13.6A 18.2A 20.9A 22.7A...
  • Page 67 User manual HYD 3K~6K-EP Efficiency And Protection Datasheet 3000-EP 3680-EP 4000-EP 4600-EP 5000-EP 5500-EP 6000-EP MPPT 99.9% efficiency European efficiency of 97.2% 97.2% 97.2% 97.3% 97.3% 97.3% 97.5% solar inverter Max efficiency of solar 97.6% 97.6% 97.6% 97.8% 97.8% 97.8% 98.0% inverter Max.
  • Page 68 User manual HYD 3K~6K-EP General Data Datasheet 3000-EP 3680-EP 4000-EP 4600-EP 5000-EP 5500-EP 6000-EP Dimension 482mm×503mm×183mm Weight 21.5kg Topology High frequency insolation (for bat) Standby self-consumptio <10W Ambient temperature -30℃~60℃（Above 45℃ Derating） range Allowable relative 0~100% humidity range Noise <25dB Max.
  • Page 69 User manual HYD 3K~6K-EP Feature And Standard Datasheet 3000-EP 3680-EP 4000-EP 4600-EP 5000-EP 5500-EP 6000-EP Display Communication Bluetooth / RS485 / WIFI / GPRS (optional) Parallel operation Warranty 5 years or more VDE-AR-N 4105, VDE V 0126-1-1, AS/NZS 4777, CEI 0-21, G98/G99, Grid standards TR321,TR322, EN 50438/EN50549, UTE C15-712-1, NRS 097-2-1, UNE 206 007-1 Safety...

  • Page 70: Quality Assurance

    User manual HYD 3K~6K-EP 9. Quality Assurance Standard warranty period The standard warranty period of inverter is 60 months (5 years). There are two calculation methods for the warranty period: 1. Purchase invoice provided by the customer: the first flight provides a standard warranty period of 60 months (5 years) from the invoice date;...
  • Page 71 User manual HYD 3K~6K-EP Without the consent of our company to change equipment or replace parts; Use unqualified materials to support our company's products, resulting in product failure; Technicians of non-company modify or attempt to repair and erase the product serial number or silk screen; Incorrect installation, debugging and use methods;...
  • Page 72 Product Name: Energy storage integrated inverter ADD: 401, Building 4, AnTongDa Industrial Park, District 68,XingDong Community, XinAn Street, BaoAn District, Shenzhen, GuangDong.P.R. China Email: service@sofarsolar.com Tel: 0510-6690 2300 Web: www.sofarsolar.com...

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