SOFAR 3.3~12KTLX-G3 User manual Preface Notice Thank you on your purchase of a SofarSolar inverter. This manual contains important safety and operational information that assist you in using this product. Please observe all applicable safety regulations that have been mandated by your local electrical supplier.
Page 6
SOFAR 3.3~12KTLX-G3 User manual Outline This manual is an integral part of SOFAR 3.3~12KTLX-G3. It describes the assembly, installation, commissioning, maintenance and troubleshooting of the product. Please read it carefully before operating. Scope of Validity This manual contains important instructions for: SOFAR 3.3KTLX-G3...
This section gives an explanation of all the symbols shown on the inverter and on the type label. 1.1. Requirement for Installation and Maintenance Installation of SOFAR 3.3~12KTLX-G3 on-grid inverter must conform with laws, regulations, codes and standards applicable in the jurisdiction. Before installing and adjusting the produce, please read all of instructions, cautions and warnings in this manual.
Page 8
Label and Symbols SOFAR 3.3~12KTLX-G3 has a labels and warning symbols attach the side of product which contains important information and technical data, these labels must not be removed from the device.
Page 9
SOFAR 3.3~12KTLX-G3 User manual i.e. violent shocks, humidity, vibration, however if the unit is visibly damaged, do not install it. Electrical Connection Please comply with all the current electrical regulations about accident prevention in dealing with the current inverter. Before the electrical connection, use opaque material to cover the PV modules or disconnect PV string DC switch.
SOFAR 3.3~12KTLX-G3 User manual Inverter should not work again until removing all faults. If any repair work is required, please contact local authorized service centre. Should not open the inverter cover without authorized permit, Attention SOFARSOLAR does not take any responsibility for that.
Page 11
SOFAR 3.3~12KTLX-G3 User manual which will not be included in warranty! Warning Warning signs on the device SOFAR 3.3~12KTLX-G3 has some safety symbols on the inverter. Please read and fully understand the meaning of the symbols before installation. Symbols Name Explanation...
Page 12
SOFAR 3.3~12KTLX-G3 User manual Positive pole Positive pole and negative pole of the negative pole input voltage (DC) Indicated the temperature allowance Temperature range RCM (Regulatory Compliance Mark) The product complies with the RCM logo requirements of the applicable Australian standards.
Introduce the efficiency curves of the product 2.1. Intended Use Field of use SOFAR 3.3~12KTLX-G3 is a transformer-less on grid PV inverter, that converters the direct current of the PV panels to the grid-compliant, three-phase current and feeds into the utility grid.
DC sources, batteries will void the manufacturers warranty. Intended grid types SOFAR 3.3~12KTLX-G3 configurations. For the TT type of electricity grid, the voltage between neutral and earth should be less than 30V. inverters are compatible with TN-S, TN-C, TN-C-S, TT, IT grid.
SOFAR 3.3~12KTLX-G3 User manual Function description of inverter box (bottom) Figure 2- 6 Bottom view of the SOFAR 3.3~12KTLX-G3 DC Switch DC negative connecters DC positive connecters USB Port (for WIFI or Ethernet communication) Breather valve COM Port (for RS485 communication)
SOFAR 3.3~12KTLX-G3 User manual 2.2. Function Description DC power generated by PV arrays is filtered through Input Board then enter Power Board. Input Board also offer functions such as insulation impedance detection and input DC voltage/ current detection. DC power is converted to AC power by Power Board.
SOFAR 3.3~12KTLX-G3 User manual 3.Installation Outline of this Chapter This topic describes how to install this product, please read carefully before install. Do NOT install the product on flammable material. Do NOT store this product in potentially explosive atmospheres. Dangers The enclosure and heat sink will get hot during operation, please do not mount the product at a easy to reach location.
Page 21
SOFAR 3.3~12KTLX-G3 User manual Checking Contents After unpacking, please check according to following table, to see whether all the parts were included in the packing, please contact your distributor immediately if anything missing or damage. Pictures Description Quantity SOFAR 1 PCS 3.3~12KTLX-G3...
SOFAR 3.3~12KTLX-G3 User manual Quality Certificate 1PCS R-type terminal 5PCS Communication Terminal 1PCS USB logger 1 PCS (Optional) (WIFI/GPRS/Ethernet) Table 3- 1 Package contents 3.3. Tools Prepare tools required for installation and electrical connection as following table: Tool Description Function...
Page 24
SOFAR 3.3~12KTLX-G3 User manual Wire Stripper Used to peel cable M6 use to uninstall and install the front M6 hexagon wrench top cover and down cover Use to crimp cable on grid side, load Crimping Tool side and CT extensive cable...
SOFAR 3.3~12KTLX-G3 User manual 3.4. Determining the Installation Position This unit is designed to be wall mounted,. When selecting an appropriate location for the inverter, observe the following: Installed vertically (to within 15° skew with the AC plug facing downwards...
SOFAR 3.3~12KTLX-G3 User manual Figure 3- 3 Wall clearances for single inverter Figure 3- 4 Wall clearances for multiple inverters 3.5. Transporting the inverter Unload the inverter from package, horizontally move to the install position. When opening the package, carefully lift the inverter with hands from the back of heat sink part.
SOFAR 3.3~12KTLX-G3 User manual Figure 3- 5 Remove inverter from package (1) Figure 3- 6 Remove inverter from package (2) Inverter is heavy, attention to keep the balance when lift the inverter. Dropped while being transported may cause injuries. Do not put the inverter with wiring terminals contacting the...
SOFAR 3.3~12KTLX-G3 User manual bolt in. Step 3: Fix the rear panels on the wall by tightening the M6*80 Hexagon screws Figure 3- 7 Installation instruction (1) Step 4: Lift the inverter and hang it on the rear panel, and fixing both sides of inverter with the supplied M6 screw.
SOFAR 3.3~12KTLX-G3 User manual 4.Electrical Connection Outline of this Chapter This section introduces the electrical connection for the product. Please read the information carefully, it will be helpful to understand the grounding, DC input, AC output and communication connections and requirements.
SOFAR 3.3~12KTLX-G3 User manual SOFAR 8.8KTLX-G3-A 22.5A/45A 13.3A SOFAR 10KTLX-G3-A 22.5A/45A 15.2A SOFAR 11KTLX-G3 22.5A/22.5A 16.7A SOFAR 11KTLX-G3-A 22.5A/45A 16.7A SOFAR 12KTLX-G3 22.5A/45A Note: In the above table, the first value of Isc PV is for MPPT 1, the second value of Isc PV is for MPPT 2.
4.2. Grounding Connection (PE) Connect the inverter to the grounding electrode using ground cable SOFAR 3.3~12KTLX-G3 is a transformerless inverter which requires the positive pole and negative pole of the PV array to be floating with respect to PE. Otherwise, it will cause inverter failure.
Figure 4- 4 Inverter external grounding instruction diagram 4.3. AC-Output Wiring SOFAR 3.3~12KTLX-G3 connect to utility grid by using AC power cable. The AC connection must meet the requirement of local grid operator Ban multiple Inverters use one circuit breaker...
SOFAR 3.3~12KTLX-G3 User manual Figure 4- 6 AC side CSA vs power loss The AC output terminal of this product is equipped with high current 5-core terminal block and customised AC output waterproof cover, which can meet the IP65 level requirements for installation.
SOFAR 3.3~12KTLX-G3 User manual RNBL5-4 (10-12awg). terminal shall not be exposed. Figure 4- 8 AC cable connection instruction diagram (1) Step 2: After assembling the PG waterproof connector, connect the cable to the AC terminal block L1, L2, L3, N, PE contacts, and fasten them (1~1.6 N · m).
SOFAR 3.3~12KTLX-G3 User manual Table 4-2 Recommend DC input cable size (maximum tolerance voltage >= 1100V PV cable) Copper cable cross section area(mm Cable OD (mm) ) 4~6.0 6.0~9.0 Step 1: Find the metal contact pins in the accessories bag, connect the cable according below diagram (1.Positive cable, 2.
SOFAR 3.3~12KTLX-G3 User manual Figure 4- 12 DC cable connection (3) Step 4: 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.
When layout the wiring diagram, please separate the communication wiring and power wiring in case the signal be affected. Note 3.3~12KTLX-G3 inverter has one USB Port and one COM Port, as shown in the following figure. 1:USB Port 2:COM Port Figure 4- 16 Communications port 4.5.1.
Page 39
SOFAR 3.3~12KTLX-G3 User manual USB acquisition stick Use for remote data acquisition and (WIFI or Ethernet) access upgrading of inverter Procedure: ① ② ③ For details, please refer to the user manual of USB acquisition stick. 4.5.2. COM—Multi function communication port...
Page 40
SOFAR 3.3~12KTLX-G3 User manual Procedure: ① ② ③ ⑤ ④ 4.5.3. 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 response commands within 2 s.
SOFAR 3.3~12KTLX-G3 User manual limit the inverter’s output power. The inverter can be connected to a RRCR (Radio Ripple Control Receiver) in order to dynamically limit the output power of all the inverters in the installation. RRCR Figure 4- 17 Inverter – RRCR Connection Pin NO.
User manual Figure 4- 19 Picture of the RS485/USB converter and PC terminal If only one SOFAR 3.3~12KTLX-G3 is used, use a communication cable, refer to section 4.5.2 for COM pin definition, and choose either of the two RS485 ports.
PC terminal or local data acquisition device, then uploaded to the server. Register remote monitoring of SOFAR 3.3~12KTLX-G3 at its relevant website or APP according to monitoring device SN. Figure 4- 22 Connecting a single wifi logger to wireless router...
Page 45
SOFAR 3.3~12KTLX-G3 User manual monitoring device over an RS485/USB converter, a Note maximum of 31 inverters can be connected in a daisy chain. The operation information (generated energy, alert, operation status) of the inverter can be transferred to PC or uploaded to the server via WiFi/GPRS.
Page 46
SOFAR 3.3~12KTLX-G3 User manual Reflux Power = Export Power Hard Anti-Reflux control = Hard Export limit control Anti-Reflux Control = Soft Export limit control When Anti-Reflux function is enabled, the reflux power of point of common coupling (PCC) will be limited to the set Reflux Power limit.
SOFAR 3.3~12KTLX-G3 User manual 5.Commissioning of inverter Outline this Chapter Introduce SOFAR 3.3~12KTLX-G3 safety inspection and start processing 5.1. Cable Connection Inspection For first time operation, check the AC voltage and DC voltage are within the acceptable range Attention AC grid connection Use multimeter to confirm that three lines and PE line are connect correctly.
SOFAR 3.3~12KTLX-G3 User manual arising out of incorrect country code selection. If the inverter indicates any fault, please refer to Section 7.1 of this manual —— trouble shooting for help. 5.3. Shutdown inverter Step 1: Turn OFF the AC circuit breaker.
SOFAR 3.3~12KTLX-G3 User manual 6.Operation interface Outline of this chapter This section introduces the display, operation, buttons and LED indicator lights of SOFAR 3.3~12KTLX-G3 Inverter. 6.1. Operation and Display Panel Buttons and Indicator lights GFCI light Up button Normal light...
SOFAR 3.3~12KTLX-G3 User manual 6.2. 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 input voltage and current Inverter working status, PV 2 input voltage and current...
Page 52
SOFAR 3.3~12KTLX-G3 User manual Inverter working status, grid voltage and frequency Inverter working status, USB status Inverter faulty alarm When control board successfully connected with communication board, the LCD display the current state of the inverter, display as shown in the figure below.
SOFAR 3.3~12KTLX-G3 User manual Inverter states includes: wait, check, normal and fault Wait: Inverter is waiting to Check State when reconnect the system. In this state, grid voltage value is between the max and min limits and so on; If not, Inverter will go to Fault State or Permanent State.
Page 54
SOFAR 3.3~12KTLX-G3 User manual (A)Enter setting Interface as below: 1.Enter Setting --------Long press DOWN button 1.Set Time 8.Set Input mode 2.Clear Energy 9.Set Language 3.Clear Events 10.Set Reflux P 4.Country Code 11.Logic Interface 5.On-Off Control 12.IV Curve Scan 6.Set Energy 13.Autotest Fast...
Page 55
SOFAR 3.3~12KTLX-G3 User manual Please contact and discuss with SOFARSOLAR technical support if you require a non standard parameter set. Code Country Code Country 000* Germany VDE4105 Cyprus Germany BDEW India 002* Germany VDE0126 Philippines Italia CEI-021 Internal New Zealand...
Page 56
SOFAR 3.3~12KTLX-G3 User manual 002-008 Australia B (Australia Region B) 002-009 Australia C (Australia Region C) Please contact your local grid operator for which option to select Note: By selecting 002-000 Australia A, 002-008 Australia B or 002-009 Australia C the power quality response mode and grid protection settings will be reset to their default values for Australia Region A, B, C respectively.
Page 57
Set the address (when you need to monitor multiple inverters simultaneously), Default 01. 8. Set Input mode SOFAR 3.3~12KTLX-G3 has 2 MPPT circuit, each MPPT circuit can work interdependently, or divided into parallel mode. User can change the setting according to the configuration 9.
Page 58
SOFAR 3.3~12KTLX-G3 User manual “Enter” 1Enter setting “OK” 1 Set Time 2 Event List 2 Clean Energy 3 System Info 3 Clean Events “Up”↑ “Up”↑ “Down↑ 4 Display Time “Down”↑ ..5 Software Update 10 Set Reflux P “OK” Input password! “OK”...
Page 59
SOFAR 3.3~12KTLX-G3 User manual 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… ↓ Wait Test 81>S2 OK! ↓ Wait Testing 81<S1...
Page 60
SOFAR 3.3~12KTLX-G3 User manual 100ms ↓ Short press the“∨” 81>.S1 49.9Hz 103ms ↓ Short press the“∨” 81>.S2 threshold 51.5Hz 100ms ↓ Short press the“∨” 81>.S2 49.9Hz 107ms ↓ Short press the“∨” 81<.S1 threshold 49.5Hz 100ms ↓ Short press the“∨” 81<.S1 50.0Hz 105ms ↓...
USB flash disk. 6.4. Updating Inverter Software SOFAR 3.3~12KTLX-G3 inverter offer software upgrade via USB flash drive to maximize inverter performance and avoid inverter operation error caused by software bugs.
SOFAR 3.3~12KTLX-G3 User manual Figure 6- 1 Remove communication broad cover Step 2:Insert USB into computer Step 3:SOFARSOLAR service team will send the software code to user, after user received the file, please decompress the files and the original folder to a USB flash drive.
SOFAR 3.3~12KTLX-G3 User manual 7.Trouble shooting and maintenance 7.1. Troubleshooting This section describes the potential errors for this product. Please read carefully for the following tips when doing the troubleshooting: 1) Check the warning message or faulty codes on the inverter information panel 2) If not any error code display on the panel, please check the following lists: —...
Page 65
SOFAR 3.3~12KTLX-G3 User manual Event Even List Description Even Reason & Solution List ID Name If the alarm occurs occasionally, the possible cause The power grid voltage is is that the electric grid is abnormal occasionally. ID01 GridOVP too high inverter automatically returns to normal operating status when the electric grid’s back to normal.
Page 66
SOFAR 3.3~12KTLX-G3 User manual HwADFault The grid current sampling ID17 IGrid error HwADFault ID18 The DCI sampling error HwADFault Grid voltage sampling ID19 VGrid(DC) faulty(DC side) HwADFault Grid voltage sampling ID20 VGrid(AC) faulty(AC side) GFCIDevic Current leakage sampling ID21 eFault(DC) (DC side)...
Page 67
SOFAR 3.3~12KTLX-G3 User manual Please check the wiring of PV string, whether each PvConfigEr PV input is independent. If the use method is not ID44 Input mode incorrect ruled out, please contact the new energy customer service of Capital Airlines.
Page 68
SOFAR 3.3~12KTLX-G3 User manual VbusInstant Unbalanced instantaneous ID66 Unbalance value of bus voltage If the configuration of the PV array is correct, Bus undervoltage during could be the sun irradiation is too low. Once sun ID67 BusUVP grid connection irradiation back to normal, inverter will work back...
Page 69
SOFAR 3.3~12KTLX-G3 User manual Inverter bus hardware ID98 HwBusOVP overvoltage HwBuckBo BuckBoost hardware ID99 ostOCP overcurrent ID100 Reserved Reserved ID102 HwPVOCP PV hardware overcurrent AC output hardware ID103 HwACOCP There are internal faults of inverter, turn OFF the overcurrent “DC switch”, wait for 5 minutes, then turn ON the...
Page 70
SOFAR 3.3~12KTLX-G3 User manual VoltLoadin ID117 Volatge loading ID124 Reserved Reserved ID125 Reserved Reserved There are internal faults of inverter, turn OFF the “DC switch”, wait for 5 minutes, then turn ON the unrecoverH Output overcurrent ID129 “DC switch”. Check whether the fault is rectified.
Page 71
SOFAR 3.3~12KTLX-G3 User manual unrecoverV Bus Unbalanced ID141 busUnbalan permanent fault LightningPr ID142 otectionFaul DC SPD failure LightningPr ID143 otectionFaul AC SPD failure ID145 USBFault USB Failure ID146 WiFiFault WIFI failure BluetoothFa ID147 Bluetooth failure ID148 RTCFault RTCClock failure CommEEP...
Page 72
SOFAR 3.3~12KTLX-G3 User manual ID158 Reserved Reserved Remote control enables. If it is not controlled by ForceShutd ID161 ForceShutdown yourself, please disconnect the DC switch of the inverter, wait for 5 minutes, and then turn on the DC switch. Observe whether the fault has been...
Page 73
SOFAR 3.3~12KTLX-G3 User manual Note: the above table is our general fault ID list, all fault IDs of this inverter can be found in the above table. 7.2. Maintenance Inverters generally do not need any daily or routine maintenance. But ensure heat sink should not be blocked by dust, dirt or any other items.
SOFAR 3.3~12KTLX-G3 User manual 8.Technical Data Outlines of this Chapter This chapter outline the SOFAR 3.3~12KTLX-G3 model type and technical parameters SOFAR SOFAR SOFAR SOFAR SOFAR SOFAR SOFAR Datasheet 3.3KTLX 4.4KTLX 5KTLX 5.5KTLX 6.6KTLX 8.8KTLX 11KTLX -G3-A Input (DC) Recommended Max. PV...
Page 75
SOFAR 3.3~12KTLX-G3 User manual Nominal grid voltage 3/N/PE, 230V/400Vac Grid voltage range 310Vac-480Vac (According to local standard) 50 Hz Nominal frequency Grid frequency range 45Hz-55Hz/54Hz-66Hz (According to local standard) Active power adjustable 0~100% range THDi <3% Power factor 1 default ( adjustable+/-0.8) Current (inrush) 23.9A /20ms...
Page 76
SOFAR 3.3~12KTLX-G3 User manual isolated islands Communication RS485/USB/ Bluetooth, Optional: WiFi/GPRS Communication General Data Ambient temperature -30℃~+60℃ range Transformerless Topology Degree of protection IP65 Allowable relative 0~100% humidity range 2000m Max. operating altitude Noise ≤40dB ≤40dB ≤40dB ≤40dB ≤40dB ≤40dB ≤40dB...
Page 77
SOFAR 3.3~12KTLX-G3 User manual SOFAR SOFAR SOFAR SOFAR Datasheet 8.8KTLX 10KTLX 11KTLX 12KTLX -G3-A -G3-A -G3-A Input (DC) Recommended Max. PV input 12000 15000 15000 18000 power (Wp) Max. DC power for 7500/15000 7500/15000 7500/15000 7500/15000 single MPPT (W) Number of MPP...
Page 78
SOFAR 3.3~12KTLX-G3 User manual Active power 0~100% adjustable range THDi <3% Power factor 1 default (adjustable+/-0.8) Current (inrush) 23.9A /20ms Maximum output 66A ,2μs fault current Maximum output overcurrent 20.0A protection Performance Max efficiency 98.50% 98.50% 98.50% 98.50% European weighted 98.00%...
Page 79
SOFAR 3.3~12KTLX-G3 User manual Communication RS485/USB/ Bluetooth, Optional: WiFi /GPRS General Data Ambient -30℃~+60℃ temperature range Topology Transformerless Degree of IP65 protection Allowable relative 0~100% humidity range Max. operating 2000m altitude Noise ≤40dB ≤40dB ≤40dB ≤40dB Weight 17kg 18kg 18kg...
SOFAR 3.3~12KTLX-G3 User manual 9.Quality Assurance SOFARSOLAR *Factory’s Warranty Terms and Conditions for Australia Applicable products These *Factory’s Warranty Terms and Conditions (“Terms and Conditions”) only applies to the following products, which are distributed and installed in Australia. Product Standard warranty period (months) Inverter GRID-TIED (3.3~12KTLX-G3)
Page 81
SOFAR 3.3~12KTLX-G3 User manual production, liabilities in respect of third parties (whether contractual or not), loss of anticipated savings or business, pure economic loss, loss of opportunity and any form of consequential, special, indirect, punitive or exemplary loss or damages, whether or not a party was advised of the possibility of such loss or damage;...
Page 82
SOFAR 3.3~12KTLX-G3 User manual quality or fitness of the Product and of every other kind whether expressed or implied by use, statute or otherwise are excluded. To the fullest extent that SOFARSOLAR is able to limit the remedies available under these Terms and Conditions, SOFARSOLAR expressly limits its liability...
Page 83
SOFAR 3.3~12KTLX-G3 User manual The rebate will be eligible ONLY to the party who has carried out on-site service for the purported faulty or otherwise defective Product; The purported faulty or otherwise defective Product has been returned in the original replacement product packaging to SOFARSOLAR and deemed to have workmanship or material defects upon testing and inspection by SOFARSOLAR.
Page 84
SOFAR 3.3~12KTLX-G3 User manual The warranty stipulated in these Terms and Conditions will not apply if SOFARSOLAR, in its sole discretion, decides that any one (1) of the following occurs: The End user is in default under the General Terms and Conditions of other...
Page 85
SOFAR 3.3~12KTLX-G3 User manual erosion, sea coasts/saltwater or other aggressive atmospheres or environmental conditions; Use of the Product in combination with any unauthorised products, equipment or materials as per the user manual, installation guide and maintenance regulations supplied with the Product;...
Page 86
SOFAR 3.3~12KTLX-G3 User manual These Terms and Conditions shall not exclude or limit the application of any provisions of any statute including any implied condition or warranty the exclusion of which would contravene any statute (including the ACL) or cause any part of this clause 4 to be illegal, invalid, void or unenforceable.
Page 87
SOFAR 3.3~12KTLX-G3 User manual To make a claim under the warranty, the End User must provide the following information and documentation of the faulty or otherwise defective Product: Product Model and serial number A copy of the valid purchasing invoice...
Page 88
SOFAR 3.3~12KTLX-G3 User manual SOFARSOLAR, in its sole discretion, may charge fees to the End User including, without limitation: On-site service fee: cost of travel and time for the technician to deliver on-site service and labour cost for the technician, who is repairing, performing maintenance on, installing (hardware or software) and debugging the faulty product.
Page 89
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...
Need help?
Do you have a question about the 3.3~12KTLX-G3 and is the answer not in the manual?
Questions and answers