Sofar 125KTLX-G4 User Manual
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Sofar 125KTLX-G4 User Manual

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USER
MANUAL
SOFAR 100...125KTLX-G4(ESS)
Shenzhen SOFARSOLAR Co.,Ltd.

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  • Page 1 USER MANUAL SOFAR 100...125KTLX-G4(ESS) Shenzhen SOFARSOLAR Co.,Ltd.
  • Page 2 Shenzhen SOFARSOLAR Co., Ltd. 11/F, Gaoxinqi Technology Building, District 67, XingDong Community, XinAn Street, Bao’An District, Shenzhen, China SOFARSOLAR GmbH Krämerstrasse 20 72764 Reutlingen Germany Email: service@sofarsolar.com service.uk@sofarsolar.com Web: www.sofarsolar.com Document number Version 01 / 12.2023 English...

  • Page 3: Table Of Contents

    Content Basic Safety Information ......8 Requirement for Installation and Maintenance....8 Symbols and Signs .
  • Page 4 Start Inverter ..........55 SOFAR monitor APP ......57 Software Downloads.
  • Page 5 Document Updates V1.0 20231031 Revised version Outline This manual is an integral part of SOFAR 100...125KTLX-G4(ESS). It describes the assembly, installation, commissioning, maintenance and failure of the product. Please read it carefully before operating. Scope of Validity This manual contains important instructions for: SOFAR 100KTLX-G4(ESS)；SOFAR 110KTLX-G4(ESS)；SOFAR 125KTLX-G4(ESS)
  • Page 6 “Attention” indicates there are potential risks, if fail to prevent, may lead to equipment cannot normally or property damage. NOTICE − “Note” provides additional information and tips that are valuable for the optimal operation of the product. 6/97 SOFAR 100...125KTLX-G4(ESS)

  • Page 7: Basic Safety Information

    NOTICE lowing information, please contact Shenzhen SOFARSOLAR CO., Ltd. Safety Instruction Introduce the safety instruction during installation and operation of SOFAR 100...125KTLX-G4(ESS). Symbols Instruction This section gives an explanation of all the symbols shown on the inverter and on the type label.
  • Page 8 SOFARSOLAR Co, Ltd does not take any responsibility for the property destruction and personal injury because of any incorrect use. Label and Symbols SOFAR 100...125KTLX-G4(ESS) has type label attach the side of product which contact important information and technical data, the type label must permanent attached to the product.
  • Page 9 Basic Safety Information DANGER − Before the electrical connection, use opaque material to cover the PV modules or disconnect PV string DC switch. PV arrays will produce danger- ous voltage if it is exposure under sun WARNING All operation must accomplish by certifi ed electrical engineer. −...

  • Page 10: Symbols And Signs

    Ensure the maximum DC voltage input is less than the maximum inverter DC voltage (including in low temperature WARNING condition). Any damage cause by overvoltage, SOFARSOLAR will not take the responsibility including warranty. 10/97 SOFAR 100...125KTLX-G4(ESS)
  • Page 11 Basic Safety Information Signs on the Product and on the Type Label SOFAR 100...125KTLX-G4(ESS) has some safety symbols on the inverter. Please read and fully understand the content of the symbols before installation. Symbol Description After disconnect with the DC side, there is a residual voltage in the inverter, operator should wait for 25 minutes to ensure the capacitor is completely discharged.

  • Page 12: Product Characteristics

    Electrical block diagram Introduce the electrical block diagram of the product. Intended Use SOFAR 100...125KTLX-G4(ESS) is a transformerless on grid PV inverter, that converters the direct current of the PV array to the grid-compliant, three-phase current and feeds into the utility grid.
  • Page 13 SOFARSOLAR will not take the responsibility. DC input of the product must be PV module, other source such like DC sources, batteries will against the warranty condition and SOFAR- SOLAR will not take the responsibility.
  • Page 14 The choice of optional parts of inverter should be made by a qualifi ed techni- cian who knows the installation conditions clearly. Dimensions Description • SOFAR 100...125KTLX-G4(ESS) L×W×H=970×695×325mm Labels on the equipment label must NOT be hidden with objects and extraneous parts (rags, boxes, equipment, etc.,);...

  • Page 15: Function Description

    The PID effect can be recovered at night to protect the PV modules. Electrical Block Diagram SOFAR 100...125KTLX-G4(ESS) has 20 DC input strings. 10 MPPT trackers that converters the direct current of PV array to grid-compliant, three phase current and feeds in into the utility grid. Both DC and AC side has Surge Protection Device (SPD).

  • Page 16: Others

    AC Relay Model HF167F-200, 830Vac/200A. All models have been performed without an additional relay connected during VDE4105:2018 certifi cation, to check the internal protection of the equipment. 16/97 SOFAR 100...125KTLX-G4(ESS)

  • Page 17: Inverter Storage

    Inverter Storage Inverter Storage If inverter is not installing immediately, storage condition need meet below requirements: • Place inverter into the original package and leave desiccant inside, sealed tight with taps. • Do not tilt or invert the box. • Store in a clean and dry place and protect from dust and moisture.

  • Page 18: Installation

    ATTENTION − Consider the weight of this product when doing transport and moving. − Choose an appropriate mounting position and surface. − At least four persons for installation. 18/97 SOFAR 100...125KTLX-G4(ESS)

  • Page 19: Installation Process

    Table 4-1Components and mechanical parts that inside the package Image Qty Description Image Qty Description SOFAR Rear Panel 100...125KTL- G4(ESS) series PV+ input con- 20 PV- input con-...

  • Page 20: Tools

    Other auxiliary tools may be used in the fi eld if necessary.Prepare tools re- quired for installation and electrical connection as following table: Table 4-2 Installation tools Hammer drill Screwdriver Removal tool Wire stripper Crescent wrench Hammer M6 Allen key Socket wrench 20/97 SOFAR 100...125KTLX-G4(ESS)

  • Page 21: Determining The Installation Position

    Installation Crimping tool Multimeter Marker Measuring tape Spirit level ESD gloves Anti-dust respira- Safety goggles tory mask Determining the Installation Position Select a appropriate location to install the product to make sure the inverter can work in a high e ciency condition. When selecting a location for the in- verter, consider the following: •...

  • Page 22: Moving Of Inverter

    Manual handling Unload the inverter from package, horizontally move to the install position. When open the package, at least two operator insert the hands into the slots on both side of the inverter and hold the handles. 22/97 SOFAR 100...125KTLX-G4(ESS)
  • Page 23 Installation ATTENTION − Keep the balance when lift the inverter. Required at least two operators for lifting or use forklift. Inverter is heavy, dropped while being transported may cause injuries. − Do not put the inverter with wiring terminals contacting the floor because the power ports and signal ports are not designed to support the weight of the inverter.

  • Page 24: Installation

    M12*50 bolts with their own fl at pads to fi x the wall bracket; M12*50 stainless steel bolts are supplied with the goods) Insert the expansion bolt vertically into the hole. (Recommended Specifi - cations: M10*90) 24/97 SOFAR 100...125KTLX-G4(ESS)
  • Page 25 Installation Align the rear panel with the hole positions, fi x the rear panels on the wall by tightening the expansion bolt with the nuts. Lift the inverter and hang it on the bracket, and fi xing both sides of invert- er with M6 screw (accessories).
  • Page 26 4.6.2 Bracket Installation: Use wall mount bracket, ensure the pole position are in same level by us- ing level rule and mark the holes. Drilling holes by using a Hammer Drill, recommend to do a stain proofi ng. 26/97 SOFAR 100...125KTLX-G4(ESS)
  • Page 27 Installation Use M10 screw and M10 fl at washer to secure the wall bracket (Note：M10*50 screw and M10 fl at washer need self-preparation). Lift the inverter and hang it on the wall bracket, and fi xing both side of inverter with M6 screw(repeat 4.6.1step 4). Note: The stand must be fi...

  • Page 28: Electrical Connections

    5.3 Grounding Protection (PE) Connect PE line for grounding protection. 5.4 Connect AC output(AC-Output) Connect AC output for feeding generated electrical into the utility grid. Must meet the requirement of local utility grid company. 5.5 DC input connection 28/97 SOFAR 100...125KTLX-G4(ESS)

  • Page 29: Electrical Connection

    Electrical Connections Connect PV array with inverter by DC cable. 5.6 Wiring method recommended Introduces the recommended wiring methods for different strings. 5.7 Networking Methods Grid connection of inverters, DCDCs and batteries in different confi gurations is presented 5.8 Communication Connection Introduce the propose USB/Wi-Fi, COM and how to connect USB/Wi-Fi port.

  • Page 30: Grounding Connection (Pe)

    Connect the inverter to the grounding electrode usingground cable NOTE − SOFAR 100...125KTLX-G4(ESS) is a transformerless inverter which requires the positive pole and negative pole of the PV array are NOT grounded. Oth- erwise, it will cause inverter failure. In the PV system, all non-current-car- rying metal parts (such as mounting frame, combiner box enclosure, etc.)
  • Page 31 Electrical Connections Procedure: Remove the insulation layer with an appropriate length using a wire strip- per (shown as fi gure 5-2). The length of L2 should 2~3mm higher than L1. Insert the exposed core wires into the OT terminal and crimp them by using a crimping tool, as shown as fi...

  • Page 32: Connect Grid Side Of Inverter(Ac-Output)

    • Inverter AC side should connect a three phase circuit current to ensure inverter can be cut off with utility grid for abnormal condition. • The AC cable need to meet the requirement of local grid operator. 32/97 SOFAR 100...125KTLX-G4(ESS)
  • Page 33 Electrical Connections 5.4.1 Open the wiring box • Forbid to open then main board cover of inverter. • Before open the wiring box, please ensure there is not DC and AC connec- tion. • If open the wiring box on snowing or raining day, please take protective measures to avoid the snow and rain enter wiring box.
  • Page 34 When use copper core cable, please use copper terminal connector. • When use copper clad aluminum cable, please use copper terminal con- nector. • When use aluminum core cable, please use Copper and aluminum transi- tion terminal connector or aluminum terminal connector. 34/97 SOFAR 100...125KTLX-G4(ESS)
  • Page 35 Electrical Connections CAUTION Direct contact between copper and aluminium conductors will cause galvanic corrosion and affect the reliability of the electrical connection. When using copper-aluminum transition terminals, or aluminum terminals with copper-aluminum transition spacers, the requirements of IEC 61238-1 must be met. When using copper-aluminum transition spacers, please pay attention to the front and back to ensure that the aluminum side of the spacer and the alu- minum terminal contact, the copper side and the terminal block contact.
  • Page 36 Unscrew the nut of the AC terminal block and select the sealing ring ac- cording to the outer diameter of the cable. Insert the nut, sealing ring into the cable in sequence. Remove the insulation layer of an appropriate length according to fi gure below. 36/97 SOFAR 100...125KTLX-G4(ESS)
  • Page 37 Electrical Connections Crimp the terminal. Installation and User Manual 37/97...
  • Page 38 Phase lines use M12 terminal connector, PE line use M8 terminal connector. The position of“PE”Line and “N”Line should not be opposite. Opposite posi- tion may cause inverter permanently faulty. Close wiring box cover, and tighten the screw. 38/97 SOFAR 100...125KTLX-G4(ESS)

  • Page 39: Connect Pv Side Of Inverter(Dc-Input)

    Electrical Connections Connect PV side of inverter (DC-Input) • Connecting PV strings into inverter must following the below procedure. Otherwise, any faulty cause by inappropriate operation will be including in the warranty case. • Ensure the maximum short circuit current of PV strings should less than the maximum inverter DC current input.
  • Page 40 (3. Positive connector, 4. Negative connector); Measure PV voltage of DC input with multimeter, verify DC input cable polar and connect DC connector with inverter until hearing a slight sound indicated connection succeed. 40/97 SOFAR 100...125KTLX-G4(ESS)
  • Page 41 Electrical Connections Please use multimeter to make sure the PV array positive pole and negative pole! When wiring in the fi eld, the DC input line should be naturally sagging not less than 50mm, the axial tension on the PV connector should not exceed 80N, and it is prohibited to generate radial stress or torque on the PV connector.

  • Page 42: Wiring Method Recommended

    PV1/PV2/PV3/PV4/PV5/PV7/PV9/PV11/PV13/PV15/PV17/PV19 PV1/PV2/PV3/PV4/PV5/PV6/PV7/PV9/PV11/PV13/PV15/PV17/PV19 PV1/PV2/PV3/PV4/PV5/PV6/PV7/PV8/PV9/PV11/PV13/PV15/PV17/ PV19 PV1/PV2/PV3/PV4/PV5/PV6/PV7/PV8/PV9/PV10/PV11/PV13/PV15/ PV17/PV19 PV1/PV2/PV3/PV5/PV6/PV7/PV8/PV9/PV10/PV11/PV12/PV13/PV15/ PV17/PV19 PV1/PV2/PV3/PV4/PV5/PV6/PV7/PV8/PV9/PV10/PV11/PV12/PV13/ PV14/PV15/PV17/PV19 PV1/PV2/PV3/PV4/PV5/PV6/PV7/PV8/PV9/PV10/PV11/PV12/PV13/ PV14/PV15/PV16/PV17/PV19 PV1/PV2/PV3/PV4/PV5/PV6/PV7/PV8/PV9/PV10/PV11/PV12/PV13/ PV14/PV15/PV16/PV17/PV18/PV19 PV1/PV2/PV3/PV4/PV5/PV6/PV7/PV8/PV9/PV10/PV11/PV12/PV13/ PV14/PV15/PV16/PV17/PV18/PV19/PV20 PV1/PV2 two string voltages should be as consistent as possible:PV3/PV4, PV5/PV6, PV7/PV8, PV9/PV10, PV11/PV2, PV13/PV14, PV15/PV16, PV17/PV18, PV19/PV20 is the same. 42/97 SOFAR 100...125KTLX-G4(ESS)

  • Page 43: Networking Methods

    Electrical Connections Networking Methods Single-unit grid-connected mode Application Scenario Characteristics: • Photovoltaic panel area about 700m • Photovoltaic Overweight • Allow reverse fl ow Confi guration: 125KW-G4*1+Gathering Stick*1+ 50kWh: DCDC*1+BCU*1+CBS5000*10 100kWh: DCDC*2+BCU*2+CBS5000*20 150kWh: DCDC*3+BCU*3+CBS5000*30 200kWh: DCDC*4+BCU*4+CBS5000*40 Installation and User Manual 43/97...
  • Page 44 Electrical Connections Multi-machine grid-connected mode Application Scenario Characteristics: • photovoltaic panel area >1400m • photovoltaic overmatch • allows reverse fl ow Confi guration: 125KW-G4*1+Gathering Stick*1+ 50kWh: DCDC*1+BCU*1+CBS5000*10*N 100kWh: DCDC*2+BCU*2+CBS5000*20*N 150kWh: DCDC*3+BCU*3+CBS5000*30*N 200kWh: DCDC*4+BCU*4+CBS5000*40*N 40/93 SOFAR 100...125KTLX-G4(ESS)
  • Page 45 Electrical Connections Stand-alone grid-connected + meter Application Scenario Characteristics: • stand-alone grid-connected • photovoltaic overmatch with an area of about 700m • has backfl ow prevention needs Confi guration: 125KW-G4*1+Gathering Stick*1+ meter *1 +50kWh: DCDC*1+BCU*1+CBS5000*10 100kWh: DCDC*2+BCU*2+CBS5000*20 150kWh: DCDC*3+BCU*3+CBS5000*30 200kWh: DCDC*4+BCU*4+CBS5000*40 Installation and User Manual...

  • Page 46: Communication Connection

    Confi guration: 125KW-G4*1+Gathering Stick*1+ 50kWh: DCDC*1+BCU*1+CBS5000*10*N+meter 100kWh: DCDC*2+BCU*2+CBS5000*20*N+meter 150kWh: DCDC*3+BCU*3+CBS5000*30*N+meter 200kWh: DCDC*4+BCU*4+CBS5000*40*N+meter Communication Connection When layout the wiring diagram, please separate the communication wiring and power wiring in case the signal be affected. 5.8.1 USB/Ethernet Port 46/97 SOFAR 100...125KTLX-G4(ESS)
  • Page 47 PC terminal or local data acquisition device, then uploaded to the server. Register remote monitoring of SOFAR 100...125KTLX-G4(ESS) at its relevant website or APP according to monitoring device SN. Installation and User Manual...
  • Page 48 Electric meter Electric meter RS485 RS485B signal- GND.S Communication Ground DRM0 Remote shunt down DRMS port DRM1/5 DRM2/6 DRM3/7 DRM4/8 CAN-3A CAN+ For parallel CAN-3B CAN- For parallel CAN-3A CAN+ For parallel CAN-3B CAN- For parallel Procedure: 48/97 SOFAR 100...125KTLX-G4(ESS)
  • Page 49 Electrical Connections Communications Port Description Logic interface A. Logic interface for AS/NZS 4777.2:2020, also known as inverter demand response modes (DRMs). The inverter will detect and initiate a response to all supported demand re- sponse commands within 2 s. The inverter will continue to respond while the mode remains asserted.
  • Page 50 1 or 0 1 or 0 1 or 0 1 or 0 100% C. Logic interface for EN50549-1:2019, is in order to cease active power output within fi ve seconds following an instruction being received at the input interface. 50/97 SOFAR 100...125KTLX-G4(ESS)
  • Page 51 Electrical Connections Table 5-7 Function description of the terminal Pin name Description Connected to (RRCR) Relay contact 1 input K1 - Relay 1 output K1 - Relay 1 output COM 2 Interface Defi nition Using RJ45 terminals Defi ne Function Note CAN-1A CAN 1 Differential signal +...
  • Page 52 PC terminal or local data acquisition device, then uploaded to the server. RS 485/USB If only one SOFAR 100...125KTLX-G4(ESS) is used, use a communication ca- ble, refer to section 5.6.2 for COM pin defi nition, and choose either of the two RS485 ports.

  • Page 53: Feed-In Limitation Connecting Line

    Electrical Connections Feed-in limitation connecting line With this function, one single inverter can dynamically limit its output power to keep the feed-in power at the point of common coupling (PCC) below a defi ned setpoint. To use the feed-in limitation function, an external SmartMeter has to be con- nected to measure the power fl...

  • Page 54: Commissioning Of Inverter

    PV busbar is used, the parallel connection mode needs to be set via the LCD. When the DC power generated by the solar array is enough, the SOFAR 100~125KTLX-G4(ESS) inverter will start automatically. Screen showing“nor- mal”indicates correct operation.
  • Page 55 Commissioning of Inverter • Choose the correct country safety code. • Different distribution network operators in different countries have dif- ferent requirements regarding grid connections of PV grid connected inverters. Therefore, it’s very important to make sure that you have selected the correct country code according to requirements of local authority.

  • Page 56: Sofar Monitor App

    SOFAR Monitor APP SOFAR Monitor APP Overview SOFAR Monitor is a new e cient, safe, fast and intelligent photovoltaic mon- itoring software, complete the near-end debugging and remote monitoring Settings. From the creation of power Plants to management, operation and maintenance, realize integrated services, easy to master your power Plant information.

  • Page 57: Account Registration And Login

    SOFAR Monitor APP Account Registration and Login 7.2.1 Registration If you do not have an account of SOFAR Monitor, please enter the registration page on the login interface. Registration page Please click the “Register account” button to enter the registration page.
  • Page 58 After you fi ll in the information correctly, click the “Register Now” button to automatically log in to the account. 7.2.2 Login If you already have an account of SOFAR Monitor, please log in directly on the login page. 58/97...

  • Page 59: Local Monitoring

    SOFAR Monitor APP Local Monitoring Please turn on your phone’s Bluetooth in advance before using this function. Installation and User Manual 59/97...
  • Page 60 SOFAR Monitor APP Bluetooth Connection Selection of connection method Entering the application interface, enter the sidebar, and click [Local Control], in the page, you can connect the mobile phone and the inverter through Bluetooth communication to realize near-fi fi eld operation and maintenance, debugging, upgrade and safety import and other functions.
  • Page 61 SOFAR Monitor APP Search: After clicking [Search], it will jump to the list of Bluetooth devices and start searching for nearby available Bluetooth devices, and select the device that needs to be connected according to the serial number of the inverter.
  • Page 62 SOFAR Monitor APP 62/97 SOFAR 100...125KTLX-G4(ESS)

  • Page 63: Ems Set Up

    SOFAR Monitor APP EMS set up Click [Advance], enter the advanced settings screen; Click [EMS menu Settings], EMS mode can be set for each time period, you can set 6 time periods, each time period can choose a different mode, a total of 6 modes.
  • Page 64 SOFAR Monitor APP 64/97 SOFAR 100...125KTLX-G4(ESS)

  • Page 65: Firmware Upgrade

    SOFAR Monitor APP Firmware upgrade Click [O&M] ,enter the O&M menu; Click [Firmware upgrade] ,enter the Firmware upgrade menu; Select the fi rmware package that needs to be upgraded, click “Next” to enter the upgrade operation page, the page will show the name of the up- graded fi...
  • Page 66 SOFAR Monitor APP to the device ARM, DSPS, DSPM, DCDC, BCU, BMU to upgrade. ARM upgrade DSPS upgrade DSPM upgrade DCDC upgrade 66/97 SOFAR 100...125KTLX-G4(ESS)

  • Page 67: App Operation Manual

    SOFAR Monitor APP BCU upgrade APP operation manual For APP function introduction and specifi c operation, please click [ ] in the upper left corner of the page, enter the sidebar, and click [Personal Settings]>> [About Software] >> [Operation Manual] to view detailed operation information.

  • Page 68: Operation And Display Panel

    Operation Operation Outlines of this chapter This section introduces the display, operation, buttons and LED indicator lights of SOFAR 100~125KTLX-G4 (ESS)Inverter. Operation and Display Panel Element Description UP key Short press: Go up Long press: Exit current interface DOWN key...

  • Page 69: Standard Interface

    Operation Standard Interface LCD interface indicated inverter status, alarm information, communication connection, PV input current and voltage, grid voltage, current and frequency, today generation, total generation. Inverter working status, PV 1 -12 PV Inverter working status, PV generated input voltage and current power Inverter working status, today gen- Inverter working status, total generat-...

  • Page 70: Main Interface

    When the control board and communication board connection fails, the LCD display interface as shown in the fi gure below. Main Interface Long press the down button under standard interface to enter into main inter- face, Main interface including below information: 70/97 SOFAR 100...125KTLX-G4(ESS)
  • Page 71 Operation Long press DOWN button 1.Enter Setting 2.Event List Normal 3.SystemInfo 4.Systerm Time 5.SoftwareUpdate A. Enter setting Interface as below: Long press DOWN button 1.Set time 12.Logic Interface 2.Clear Energy 13.IV Curve Scan 3.Clear Events 14.Set Power Derating 4.Set SafeCode 15.PCC Select 5.Remote Control 16.PID Setting...
  • Page 72 Set the address (when you need to monitor multiple inverters simultaneously), Default 01. Set Input mode SOFAR 100~125KTLX-G4(ESS) has 10 MPPTs, these MPPTs can work interde- pendently, or divided into parallel mode. User can change the setting accord- ing to the confi guration.
  • Page 73 Operation The refl ux power value set by the anti-refl ux function is the maximum power value allowed to be transmitted to the grid. Hard Refl ux Set hard anti-refl ux switch and percentage. Logic interface Enable or disable logical interfaces. It is use for below standard Australia (AS4777), Europe General (50549), German(4105).
  • Page 74 Long press the button and short press the button to turn the page in the stan- dard user interface to enter into “4.Display Time”, then long press the button to display the current system time. E. Software Update 74/97 SOFAR 100...125KTLX-G4(ESS)

  • Page 75: Updating Inverter Software

    fi rmware for user if it is necessary. The user needs to copy the upgrade fi le to the USB fl ash drive. Updating Inverter Software SOFAR 100~125KTLX-G4(ESS) inverter offer software upgrade via USB fl ash drive to maximizeinverter performance and avoid inverter operation error caused by software bugs.
  • Page 76 9. After the update is completed, turn off the DC breaker, wait for the LCD screen extinguish, then recover the communication waterproof 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>>3. SoftVersion. 76/97 SOFAR 100...125KTLX-G4(ESS)

  • Page 77: Troubleshooting And Maintenance

    Are the confi guration settings correctly for the particular installation? This section contains the potential errors, resolution steps, and provide users with troubleshooting methods and tips. The process to check the event list can refers to SOFAR Monitor APP. Table 9-1 Even listEvent list Installation and User Manual...
  • Page 78 004 GridUFP age, under-voltage, over-fre- The grid frequency quency, under-frequency is too low protection points after obtain- ing approval from the local electrical grid operator. 005 GFCI Check for inverter and wiring. Charge Leakage Fault 78/97 SOFAR 100...125KTLX-G4(ESS)
  • Page 79 Troubleshooting and Maintenance Name Description Solution 006 OVRT fault If the alarm occurs occasion- OVRT function is ally, the possible cause is that faulty the electric grid is abnormal 007 LVRT fault occasionally. Inverter will LVRT function is automatically return to normal faulty operating status when the 008 IslandFault...
  • Page 80 If no, please contact technical 029 ConsistentDCI support. DCI consistency error 030 SpiCom- SPI communication mFault(DC) 031 error (DC) DCI consistency error 033 SpiCom- SPI communication mFault(AC) 034 error (AC) SPI communication error (AC) 035 SChip_Fault Chip error (DC) 80/97 SOFAR 100...125KTLX-G4(ESS)
  • Page 81 Troubleshooting and Maintenance Name Description Solution 036 MChip_Fault Chip error (AC) 037 HwAuxPowerFault Auxiliary power error 038 InvSoftStartFail Inverter soft startup failed 039 ArcShut- Check whether the photo- Arc shutdown voltaic module connection downAlarm line and terminals have bad 041 RelayFail arc contact.
  • Page 82 Ambient tempera- ture 2 protection 059 TempErrInv1 Module 1 tempera- ture protection 060 TempErrInv2 Module 2 tempera- ture protection 061 TempErrInv3 Module 3 tempera- ture protection 062 TempDiffErrInv Inverter Module Temperature Di er- ence is too large 82/97 SOFAR 100...125KTLX-G4(ESS)
  • Page 83 Troubleshooting and Maintenance Name Description Solution 065 BusRmsUnbal- Internal faults of inverter, Unbalanced bus switch OFF inverter, wait for ance voltage RMS 5 minutes, then switch ON 066 BusInstUnbalance The transient value inverter. Check whether the problem is solved. of bus voltage is If no, please contact technical unbalanced support.
  • Page 84 099 HwBuckBoos- BuckBoosthardware tOCP overfl ows 102 HwPVOCP PV hardware overfl ows 103 HwACOCP Ac output hardware overfl ows 104 HwDiffOCP Hardware differen- tial over-current 105 MeterCommFault Meters communica- Check whether the meters wiring is correct. tion fault 84/97 SOFAR 100...125KTLX-G4(ESS)
  • Page 85 Troubleshooting and Maintenance Name Description Solution 113 OverTempDerat- Make sure the inverter is Internal tempera- installed where there is no ture is too high direct sunlight. Please ensure that the inverter is installed in a cool/well venti- lated place. Ensure the inverter is installed vertically and the ambient temperature is below the inverter temperature limit.
  • Page 86 5 minutes, then switch ON Communication inverter. Check whether the Fault board EEPROM problem is solved. error If no, please contact technical 150 FlashFault Communication support. board FLASH error 152 SafetyVerFault The software version is inconsistent with the safety version 86/97 SOFAR 100...125KTLX-G4(ESS)
  • Page 87 Troubleshooting and Maintenance Name Description Solution 153 SCILose(DC) SCI communication error (DC) 154 SCILose (AC) SCI communication error (AC) 155 SCILose (Fuse) SCI communication error (Fuse) 156 SoftVerError Contact for technical support Inconsistent and software upgrades software versions 161 ForceShutdown The inverter is performed a Force shutdown forced shutdown...

  • Page 88: Pid Recovery

    BMU fault PID Recovery When the inverter is running, the PID function module increases the potential between the negative pole of the photovoltaic array and the ground to a posi- tive value to suppress the PID effect. 88/97 SOFAR 100...125KTLX-G4(ESS)
  • Page 89 Troubleshooting and Maintenance • Before enabling the PID recovery function, ensure that the polarity of the PV module‘s ground voltage meets requirements. If in doubt, please contact the PV module manufacturer or read their corresponding User Manual. • If the voltage scheme of the PID protection/recovery function does not meet the requirements of the corresponding PV module, the PID function cannot work properly or may even damage the PV module.

  • Page 90: Maintenance

    Clean fans regulary 10.1 Fan Maintenance Fan replacement Follow below steps for maintenance: • Before replacing a fan, power f the inverter. • When replacing a fan, use insulation tools and wear personal protective 90/97 SOFAR 100...125KTLX-G4(ESS)
  • Page 91 Maintenance devices. Remove the screw on the fan tray and save it, Extract the fan bracket about 5-10cm. Cut the ties holding the fan cable, unplug the connection terminals, and pull out the fan bracket. Use a soft-bristled brush or vacuum cleaner to clean dust and debris from the surface of the fan.

  • Page 92: Replacing A Fan

    You can’t use brute force to pull out the terminal, you can use your fi nger nail (tweezers or a small screw driver is recommended) to press down on the movable buckle, and then do the pulling and inserting. 92/97 SOFAR 100...125KTLX-G4(ESS)
  • Page 93 Maintenance Cut the cable ties of the faulty fan (fan 3 is used as an example below, other fans work in the same way). Remove the faulty fan Install the new fan, following the order of steps 4,3. Clean the fan bracket to make sure there are no foreign objects left behind. Follow step 2 to align the fan bracket with the mounting position, push in the fan bracket and connect the connection terminals.

  • Page 94: Technical Data

    Technical Data Technical Data Outlines of this Chapter This topic lists the technical specifi cations for SOFAR 100~125KTLX-G4(ESS) inverter. 11.1 Parameter Table SOFAR SOFAR SOFAR SOFAR Datasheet 100KTLX- 110KTLX- 125KTLX- 125KTLX-G4- G4(ESS) G4(ESS) G4(ESS) A(ESS) Input DC Max. input volt-...
  • Page 95 Technical Data SOFAR SOFAR SOFAR SOFAR Datasheet 100KTLX- 110KTLX- 125KTLX- 125KTLX-G4- G4(ESS) G4(ESS) G4(ESS) A(ESS) Max. Output 152A@380V 167.2A@380V 190A@380V 190A@380V 145A@400V 159.5A@400V 181.2A@400V 181.2A@400V current 139.2A@415V 153.1A@415V 174A@415V 174A@415V Rated grid volt- 3/N/PE, 380 V / 400 V / 415 V Grid voltage 310 –...
  • Page 96 °C perature range Topology Transformerless Degree of protec- IP66 tion Allowable relative humidity range Max. operating altitude Weight Cooling Smart air cooling Dimension (W x H x D) Display LCD & Bluetooth +APP Communication RS485 / Wi-Fi 96/97 SOFAR 100...125KTLX-G4(ESS)
  • Page 97 Version 1.0 ENERGY TO POWER YOUR LIFE ADDRESS 11th Floor, Gaoxingqi Technology Building, District 67, Xingdong Community, Xin’an Street, Bao’an District, Shenzhen, China SOFARSOLAR GmbH Krämerstrasse 20 72764 Reutlingen Germany EMAIL service.uk@sofarsolar.com WEBSITE www.sofarsolar.com...

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