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LIVOLTEK GF1-3K6S2 User Manual

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Summary of Contents for LIVOLTEK GF1-3K6S2

  • Page 2 Contents About This Manual ..............1 1.1 Scope of Use ..................1 1.2 Intended Audience................1 1.3 Symbols Used .................. 2 1.4 How to Use This Manual..............2 2 Safety Precaution ................. 2 2.1 Personnel Requirements ..............2 2.2 Inverter Safety .................. 3 2.3 Battery Safety ...................
  • Page 3 3.5.2 Battery First mode ..............15 3.5.3 TOU mode ................15 4 Preparation before Installation ..........16 4.1 Environment Requirements ............16 4.2 Angle and Space Requirements ............. 17 4.3 Tools Requirement ................. 18 4.4 Additionally required materials ............19 5 Mechanical Mounting ..............
  • Page 4 6.10.2 Battery Temperature Sensor Connection (Lead-acid Batteries) ......................45 6.10.3 Diesel Generator Communication .......... 45 7 System Operation ..............46 7.1 LCD Display ................... 46 7.2 Start-up Procedures ............... 48 7.3 Shut down Procedures ..............49 8 Setting ..................51 8.1 Setting on the Inverter LCD Display ..........
  • Page 5 8.3.6 Gen Port Setting ..............67 8.3.7 Features .................. 68 8.3.8 Battery ..................68 8.3.9 Upgrade ................... 68 9 Troubleshooting and Maintenance ........... 68 9.1 Troubleshooting ................68 9.2 Routine Maintenance ..............74 9.3 Decommissioning ................74 9.4 Disposal of the Inverter ..............75 10 Technical Data ................
  • Page 6 Read the manual carefully before any operation. This manual is valid for Single-phase Off-grid Inverter: GF1-3K6S2 GF1-6KS2 Model description Definition Description Product name GF: off-grid inverter Inverter type 1: single-phase Rated output power 3K6: rated power of the inverter is 3.6kW...
  • Page 7 Read the manual and other related documents before performing any operation on the inverter. Documents must be stored carefully and be available at all times. The information in this manual is subject to change without notice. Please check www.livoltek.com for more information. 2 Safety Precaution 2.1 Personnel Requirements ⚫...
  • Page 8 The inverter must be installed, electrically connected, operated and maintained by specially trained and qualified electrician. ⚫ The qualified persons who plan to install or maintain LIVOLTEK equipment must receive thorough training, understand all necessary safety precautions, and be able to correctly perform all operations.
  • Page 9 Danger to life due to fire or explosion. ⚫ In rare cases, an explosive gas mixture can be generated inside the product under fault conditions. In this state, switching operations can cause a fire inside the product or explosion. Death or lethal injuries due to hot or flying debris can occur.
  • Page 10 The safety instructions in this manual cannot cover all the precautions that should be followed. Perform operations considering actual onsite conditions. ⚫ LIVOLTEK shall not be held liable for any damage caused by violation of the safety instructions in this manual. 2.5 Electrical Safety ⚫...
  • Page 11 the positive or negative poles of PV strings do not short-circuit to the ground. Otherwise, an AC or DC short-circuit may occur, resulting in equipment damage. The damage caused by this is not covered by the warranty. ⚫ Input terminals of the PV inverter apply only to input terminals of PV String do not connect any other DC source to the input terminals.
  • Page 12 ⚫ For personal safety maintenance personnel must wear appropriate personal protective equipment (like insulation gloves and protective shoes) for the inverter maintenance. ⚫ Place temporary warning signs or erect fences to prevent unauthorized access to the maintenance site. ⚫ Follow the procedures of maintenance stipulated in the manual strictly. ⚫...
  • Page 13 ESQCR22(1)(a). 2.8 EU Declaration of Conformity Hangzhou Livoltek Power Co., Ltd. hereby declares that the inverter with wireless communication module sold in the European market meets the requirements of the following directives: ⚫...
  • Page 14 3 Product Overview 3.1 Appearance Different sides of the inverter: display different function areas and descript what it includes in this area. Function description LCD panel Includes the screen, indicators and keys. Grounding terminal Connect the inverter to the earth. Includes PV terminals, battery terminals, EPS &...
  • Page 15 3.2 Nameplate Here is one of the nameplate of the inverter. 3.3 Icons on the nameplate Icon Description CE Mark: The inverter complies with the requirements of the applicable CE guidelines RCM mark of conformity The inverter complies with the requirements of the applicable UKCA guidelines.
  • Page 16 Caution: Risk of Danger Caution: Risk of Electric Shock! Caution: Hot Surface Refer to the corresponding instructions RoHS Mark: The inverter complies with the requirements of the applicable RoHS guidelines Danger to life due to high voltage. Cut off all power and wait at least 5 minutes before any work is carried out on the inverter WEEE Mark: Do not dispose of the inverter together with household waste...
  • Page 17 ➢ Inverter with smart loads Item Description series GF1 series off-grid inverter supports a grid connection of a inverter photovoltaic system. PV modules PV string is composed of series connected PV panels. GF1 series inverter should be coupled with lithium-ion/ lead- acid battery.
  • Page 18 3.5 Working Mode This series inverter provides three operating modes: ECO Mode, Battery First mode and TOU mode. Customer can configure the work modes via LIVOLTEK APP or the LCD display for based on different requirements. Work Modes Description ECO Mode (self-use) is suitable to maximize the solar energy usage and minimize the grid import.
  • Page 19 (can be set via APP or LCD display) for when there is a grid outage. ⚫ The battery will never discharge when the capacity is lower than the set value when the grid is on. TOU mode (Self-define) is set for automatically charging or discharging the battery with a certain power under different time periods (can be set via APP or LCD display).
  • Page 20 ⚫ When grid fails, In the event of a grid failure or there’s no mains, the off-grid inverter automatically switches to Off-grid operation mode. The off-gird mode ensures that the system forms a battery backup grid that utilize power from PV production and battery to supply power to critical loads.
  • Page 21 battery with a certain power under different time periods (can be set via APP or LCD display). This mode can be set with any of the other two work mode. 4 Preparation before Installation 4.1 Environment Requirements Install the device in a well-ventilated environment to ensure good heat dissipation.
  • Page 22 *Select an optimal mounting location for safe operation, long service life and expected performance. The wall hanging the inverter should meet conditions below: ⚫ The wall must be solid enough to bear the weight of the inverter. ⚫ Make sure that there are no electricity cables or plumbing inside the wall where you drill holes.
  • Page 23 dissipation. 4.3 Tools Requirement Installation tools include but are not limited to the following recommended ones. If necessary, use other auxiliary tools on site. The following tools must all comply with regulatory requirements.
  • Page 24 4.4 Additionally required materials Recommended Cable Source Specifications Grid / EPS/ generator Prepared by 8 AWG (10 mm² ) cable customers Prepared by PV cable 6AWG (4 mm² ) customers Prepared by battery cable 3 AWG (25 mm² ) customers Prepared by PE cable 8 AWG (10 mm²...
  • Page 25 5.1 Scope of Delivery Battery PV pin terminals PV connectors Inverter *1 pc connectors * 2 pairs * 2 pairs * 1 pair EPS & GEN GRID connector 8-pin terminal 5-pin terminal connector and and tools * 1 pair block * 2 pcs block * 1 pc tools * 2 pairs Parallel...
  • Page 26 Documents * 3 pcs Item Description Remark 1 pc Inverter 2 pairs PV pin terminals (+/-) Assembled with PV connectors 2 pairs PV connectors (+/-) For connecting PV cables connecting battery power 1 pair Battery connectors cable GRID connector and 1 pair For connecting GRID cable tools...
  • Page 27 bracket providing wireless data 1 pc Wi-Fi logger transmission among devices User Manual & Quick Installation 3 pcs Documents Guide & Certificates 5.2 Mounting Procedures ⚫ Make sure the wall drilled is free from power cables or other piping in the wall to prevent electric shock or other damage.
  • Page 28 Figure Inverter bracket dimensions (mm) Step 1: Take out the inverter, wall-mounting bracket, expansion tubes & self- tapping screws and M5*12 screws from the accessory. Step 2: Put the inverter bracket on the wall with a spirit level on the top of the bracket to ensure it is level.
  • Page 29 6 Electrical Connection This chapter mainly describes the cable connections of the system. Prior to any electrical connections, keep in mind that the inverter has dual power supplies. It is mandatory for the qualified personnel to wear personal protective equipment (PPE) during the electrical work. Danger to life due to a high voltage inside the inverter! ⚫...
  • Page 30 ⚫ All electrical connections must be in accordance with local and national standards. ⚫ Only with the permission of the utility grid, the inverter can be connected to the utility grid. ⚫ Do not work with power on. All operations, cables and parts specification during the electrical connection shall be in compliance with local laws and regulations.
  • Page 31 6.2 Electrical Connection Diagram ⚫ The inverter support lithium batteries and lead-acid batteries connection. Customers shall notice the specific difference of wiring method to the inverter. The lithium battery connection is taken for an example below. ➢ Electrical Connection (with a diesel generator)
  • Page 32 ➢ Electrical Connection (with smart loads) 6.3 PE Connection (mandatory) ⚫ Before any electrical connection, make sure that the inverter is free from the PV panels and the utility grid in case of electrical shocks. ⚫ Connect the PE cable to the outer plate of the inverter and ensure that the PE cable is securely connected to prevent electrical shocks.
  • Page 33 ⚫ It is recommended that silica gel or paint be used around the ground terminal after the PE cable is connected. The PE cable should be prepared by customers. The OT terminal is provided in the inverter accessories. Model 3.6~6kW Wire specification 8 AWG (10 mm²...
  • Page 34 ⚫ For a single inverter WiFi communication, a PSD300 WiFi logger in the inverter accessory can be applied. ⚫ For WiFi communication in a parallel system, a PSD1000 customers additionally bought from Livoltek should be connected to the master inverter.
  • Page 35 ➢ Wiring Connection Procedure： Step 1: Remove the waterproof lid from the Wi-Fi port. Step 2: Insert the Wi-Fi logger into the Wi-Fi port. Slightly shake it by hand to determine whether it is installed firmly. Step 3: Build the connection between the inverter and router. Please refer to the Pocket Wi-Fi user manual to configure the WLAN.
  • Page 36 capacity is required based on actual conditions. ⚫ The grid voltage and frequency must be in the permissible range. ⚫ Never connect a load between the inverter and the circuit breaker. The AC cables should be prepared by customers. And an external AC circuit breaker should be installed on the output side of the inverter and the grid side to ensure safe disconnection from the grid.
  • Page 37 6.6 EPS Connection If you want to use the energy storage system to power the house (as a standalone system or during Grid failure), the EPS connector should be used and the EPS function should be enabled during setup. Otherwise, you could leave the EPS port disconnected.
  • Page 38 and loads) to ensure safe disconnection. The recommended specifications are as follows. Model 3.6~6kW Wire specification 8 AWG (10 mm² ) ≥63A AC breaker specification ➢ Wiring procedure： Step 1: Remove the cable jackets and strip the wire insulation. Step 2: Take out the EPS terminal from the package box and disassemble it as below chart.
  • Page 39 6.7 PV Connection Danger of electric shock! ⚫ The PV array will generate lethal high voltage once exposed to sunlight. Ensure all cables are voltage-free before performing electrical operations. ⚫ Do not connect the AC circuit breaker before finishing electrical connection.
  • Page 40 Wiring procedure： Step 1: Strip the cable insulation for 6~8mm. Step 2: Connect the red (black) wire to the positive (negative) PV pin terminal, and crimp them. Step 3: Insert the crimped positive and negative power cables into the corresponding connectors until a “click” sound is heard. Step 4: Tighten the locking nuts on the positive and negative connectors.
  • Page 41 the battery side and configuration. ⚫ Be careful against any electric shock or chemical hazard. ⚫ A short circuit in the battery may cause personal injury. The instantaneous high current caused by a short circuit can release a large amount of energy and may cause a fire.
  • Page 42 ➢ Power cable wiring procedure： Step 1: Strip BAT cable insulation for 14~18mm. Step 2: Disassemble the battery connectors, thread stripped cables through the nuts of the connectors into the metal part of the connectors, crimp the connectors with a hydraulic clamp and tighten the nuts of the battery connectors.
  • Page 43  Wiring procedure: When lithium batteries are to be connected, a communication cable and a RJ45 terminal should be prepared by customers. Step 1: Strip and insert the communication cable into the RJ45 terminal in accordance with the pin definition and crimp the terminal. Step 2: Connect the assembled cable to the inverter.
  • Page 44  Wiring Procedure: When lead-acid batteries are to be connected, a battery temperature sensor (in accessories) should be taken out. Step 1: Strip 5~7mm insulation off the cable of the battery temperature sensor. Step 2: Remove the MULTI connector, thread striped cables through the swivel nut.
  • Page 45 6.9 GEN Connection ➢ Generator wiring diagram ⚫ The generator displayed in this diagram is for an example. Please refer to the specific generator user manual or installation guide for the wiring terminals on the generator side. ⚫ A generator and smart loads cannot be connected at the same time. ➢...
  • Page 46 Model 3.6-6kW Wire specification 8 AWG (10 mm² ) AC breaker specification Step 1: Remove the cable jackets and strip the wire insulation. Step 2: Take out the GEN connector from the package box and disassemble it as below chart. Step 3: Put the GEN cables through the terminal cap, insert cables into connection terminals in accordance with the polarities indicates on it and tighten the screws.
  • Page 47 Step 2: Remove the MULTI connector, thread striped cables through the swivel nut. Connect the two cables to the 5-pin terminal block as the figure below, secure the cables on the terminal block and insert the terminal block into the CON5 terminal block (pin 4 and pin 5) inside the MULTI port.
  • Page 48 Terminal Pin definition Function block NTC_BAT+ CON4 battery temperature sensor for Livoltek lead-acid battery NTC_BAT- DO1_1 CON5 dry contact signal for startup the diesel generator DO1_2 6.10.1 Parallel Connection Up to 10 GF1-3.6~6kW series inverters can be connected in parallel.
  • Page 49 ➢ Wiring procedure An assembled parallel communication cable is provided in an inverter accessory. When three inverters are connected in parallel, Step 1: Please refer to 6.3 PE Connection, 6.5 GRID Connection, 6.6 EPS Connection, 6.7 PV Connection, 6.8 Battery Connection and 6.9 GEN Connection for power cable connection details of the three inverters.
  • Page 50 * For the settings for the parallel system, please refer to the parallel setting instructions. 6.10.2 Battery Temperature Sensor Connection (Lead-acid Batteries) For specific information about the lead-acid battery temperature sensor connection with the inverter, please refer to 6.8 Battery Connection. 6.10.3 Diesel Generator Communication For specific information about a diesel generator communication with the inverter, please refer to 6.9 GEN Connection.
  • Page 51 7 System Operation 7.1 LCD Display The inverter operation status can be obtained from observing LCD indicator status. Function Description System on/off key is to start or stop the energy conversion inverter. ● When the inverter is in off status, press the System on/off key and then the inverter starts, System begins system self-checking and runs normally...
  • Page 52 same time). Slow The inverter is in standby or off flashing status. The inverter is starting and in self- Flashing checking status. The inverter is in fault status. Or the Always inverter is upgrading software (with Status light always on at the same time).
  • Page 53 You can monitor & set data of the inverter through the LIVOLTEK APP. For details about operation, refer to APP User Manual. APP User Manual is available for free from website. 7.2 Start-up Procedures Check the following items before starting the inverter: ⚫...
  • Page 54 Step 5: Configure the Wi-Fi logger ⚫ Register an account, build a new site, add your device into the site and configure your Wi-Fi on the Livoltek APP. Refer to 8.2 Setting on the APP for details. Step 6: Switch on the inverter ⚫...
  • Page 55 Notes: Please strictly follow the following procedure. Otherwise, it will cause lethal voltages or unrecoverable damage to the inverter. Step 1: Press the System on/off key on the inverter to turn off the inverter. Step 2: Turn off the AC breaker between the inverter and EPS loads. Step 2: Turn off the DC breaker between the inverter and PV panels.
  • Page 56 8 Setting 8.1 Setting on the Inverter LCD Display 8.1.1 Menu of the Inverter LCD Display 8.1.2 Settings on the Inverter LCD Display Customers touch anywhere on the LCD screen or press any key on the inverter, Information on the LCD screen displays. ➢...
  • Page 57  Solar Page  Bat Page  Load Page  Grid Page  Setting ⚫ Solar Page Press the icon to enter the solar page, the real-time power of the PV, the voltage and current of each string of PV, today’s PV energy and total PV energy of the inverter displays in the solar page.
  • Page 58 ⚫ Grid Page Press the icon to enter the grid page, the meter online state, the real-time voltage, frequency of the grid displays on the grid page. ⚫ Setting Page Press the icon to enter the setting page, installers and customers can set the work mode under “System Work Mode”, the “Generator Input”...
  • Page 59 When any of the other two work modes set with TOU mode,  the TOU mode prioritizes the other two work modes within the TOU time periods,  the other two work modes prioritize the TOU mode out of the TOU time periods.
  • Page 60 Example 3: Stop the time periods as needed. to enter the next “TOU Step 3: Press SET2” page to set the day within a week to enable different charging or discharging time periods. ➢ Gen Port setting Step 1: Press “Gen Port” in the “Setting” interface to enter the “GEN Setting”...
  • Page 61 The off-grid inverter can be configuration via Wi-Fi logger which is the easiest way to ensure a simple, highly reliable communication connection. LIVOLTEK portal is a platform that the inverter connects through Wi-Fi logger, and upload the data to it every 5 minutes. You can log in account at any time through a computer, IOS or Android to achieve real-time display and remote control.
  • Page 62 APP. Web: https://www.livoltek-portal.com/ APP: Search for Mylivoltek on Apple App Store, Google Play and download the latest installation package.
  • Page 63 8.2.1 User Interface on the APP Note: “*” in the diagram means it should be set on the LCD screen of the inverter.
  • Page 64 8.2.2 Register an account Open the app or web and log in with the username & password. Register it first if you don’t have an account, which provides access to the remote monitoring and management. ⚫ There are two different accounts for end users and business (agents/installers), with different account authorizations.
  • Page 65 ⚫ Create a new site.  For the first time to create a new site, click “Create A Site Now” to enter the new site setting interface. For customers who already own a site, click “Add” button [+] at the top ...
  • Page 66 Complete “Site Settings” interface. ⚫ Step 1: Enter “Site Name”, choose “Installer”. For “Site Address”, if “Map” is selected, the APP shall automatically locate the region of the device and customers or installers should fill in the address and choose the time zone. If “Manual”...
  • Page 67 Step 3: Set the tariff, confirm and complete the site settings. Notes: Tick "I agree installers to access to this site ", then your installer can assist you to set the inverter remotely. 8.2.3.2 Add Device ⚫ Click “Site” and click “…” at the top right corner of your site, touch "[+] Add"...
  • Page 68 8.2.4 Wi-Fi Configuration ➢ Preparation ⚫ Power on inverter ⚫ Power on router and check the wireless networks that mobile phone joined Step 1: Confirm server address ⚫ Open the APP and click the “setting” icon at the top right corner of the page to enter Login Settings interface.
  • Page 69 Step 3: WiFi Configuration ⚫ Click "Go Local Mode" --->"PSD300-WiFi" to enter WiFi connection...
  • Page 70 interface. ⚫ Connect to your home WiFi and click “Next step”. ⚫ Press “Reset” key on PSD300 WiFi Dongle about 3~5 seconds. Then the first LED will blink. ⚫ Select and connect to the dongle hotpot (The initial password of dongle hotpot is “admin123456”) and click “Next”.
  • Page 71 You can check the parameters of the system. The status and data on this page might be a few minutes delay from the real-time inverter data. 8.3.2 Device Information In this interface, you can check the inverter information, BMS information and Wi-Fi information.
  • Page 72 8.3.4 Basic In the “Basic” interface, you can restart, turn on, shut down the inverter and manually turn on/off emergency charge. ➢ Manually emergency charge ⚫ “Manually emergency charge” is design to avoid the damage caused by long time excessive discharge. ⚫...
  • Page 73 If a grid-tied inverter is connected to the inverter, customers should enter “AC Couple” interface to complete the grid-tied inverter related settings. 8.3.7 Features Under the “Features” interface, customers can enter “Parallel Connection” interface to enable the parallel function when inverters are connected in parallel;...
  • Page 74 handling methods are shown in the table below. Alarm Alarm Name Possible causes Suggestion Number Checking the voltage Grid Grid voltage higher than 1,2,13,14 value of the grid. The Overvoltage the set protection value inverter will reconnected Grid Grid voltage lower than grid after grid...
  • Page 75 Grid grid-connection, occurs repeatedly, anomalies triggered if the grid is please contact abnormal local power company or Livoltek customer service Centre. Check voltage Grid voltage Imbalance of voltage in difference between imbalanced each phase of the grid the voltages of the phases of the grid.
  • Page 76 that it is not exposed to direct sunlight and that the fan is working properly. Check protection value; Inspect the PV cables for ground insulation impedance insulation cables impedance normal and the fault Low Insulation photovoltaic panel occurs during rainy Impedance ground below...
  • Page 77 string is incorrect. It may be related to environmental temperature, such as Environmental overheating 545-551 Battery Alarm temperature temperature, in which battery case, improving the battery's operating environment necessary. Related voltage anomalies, check if the battery cables are Battery cables 577-587 Battery Fault connected properly, if...
  • Page 78 ， to restart the inverter. ， ， ， ， ， In the event of any of the above situations and if the alarm or fault persists, please contact your local electricity company or the Livoltek Customer Service Centre.
  • Page 79 9.2 Routine Maintenance To ensure that the inverter can operate properly for a long term, you are advised to perform routine maintenance on it as described in this chapter. Risk of inverter damage or personal injury due to incorrect service! Always keep in mind that the inverter is powered by dual sources: PV strings and utility grid.
  • Page 80 electricity. ⚫ Before removing DC input connector double check DC input switch, is turned to OFF to avoid inverter damage and personal injury. Perform the following procedures to remove the inverter: Step 1: Disconnect all the power cables; Step 2: Disconnect all the communication cables, remove the Wi-Fi logger; Step 3: Remove the inverter from the wall, also remove the bracket if necessary;...
  • Page 81 10 Technical Data Notes: (1) Backup output power depends on the battery. (2) Specifications are subject to change without further notice. Model GF1-3K6S2 GF1-6KS2 PV Input Max. PV input power (W) 7200 12000 Max. PV input voltage (V) Minimum PV input voltage (V)
  • Page 82 Peak output/apparent power (W/VA) 2 times of rated power, 10s Nominal output voltage (V) L/N/PE, 220/230/240 Nominal output frequency (Hz) 50/60 Nominal output current (A) 16.7 27.3 Total harmonic distortion rate (%) <3 Switching time between parallel and off- <10 grid (ms) Generator Data Max.
  • Page 83 Inverter is changed, updated or disassembled on hardware or software without authority from LIVOLTEK. ⚫ Obtain the communication protocol from other illegal channels. ⚫ Build monitoring, control system without authority from LIVOLTEK. ⚫ LIVOLTEK will keep right to explain all the contents in this user manual.

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Gf1-6ks2