LIVOLTEK GF1 Series User Manual

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USER MANUAL

GF1 3kW

The copyright of this manual belongs to Hangzhou Livoltek Power Co., Ltd. Any corporation

or individual should not plagiarize, partially or fully copy (including software, etc.), and no

Livoltek Power Co., Ltd. reserves the right of final interpretation.

GFL1- 21-V2-2205

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Summary of Contents for LIVOLTEK GF1 Series

Page 1 GF1 3kW Copyright Declaration The copyright of this manual belongs to Hangzhou Livoltek Power Co., Ltd. Any corporation or individual should not plagiarize, partially or fully copy (including software, etc.), and no reproduction or distribution of it in any form or by any means. All rights reserved. Hangzhou Livoltek Power Co., Ltd.
Page 2 Content About This Manual ................1 1.1 Scope ........................1 1.2 Target Group ....................1 1.3 Levels of warning messages ..............1 1.4 How to use this manual ................1 Safety ....................2 2.1 Safety Instructions ..................2 2.2 Symbol on the Type Label ................5 Scope of Delivery ................
Page 3 7.1 Powering ON the Inverter ..............41 7.2 Powering OFF the Inverter ..............41 7.3 LEDs and Graphical Display ..............42 7.4 Parameter Setting Menu Structure............. 44 7.5 LCD Operation ..................... 45 Troubleshooting ................57 Technical Data ................. 60 10. Disclaimer ..................62...
Page 4 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.
Page 5 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. 2.2.1...
Page 6 2.2.3 Battery Protection The product must be operated only in connection with an • intrinsically safe lithium-ion battery approved by LIVOLTEK or 48V lead-acid battery. The battery must comply with the locally applicable standards •...
Page 7 the product. The maximum permissible DC input voltage of the product must not be exceeded. Batteries deliver electric power, resulting in burns or a fire hazard • when they are short circuited, or wrongly installed. Lethal voltages are present at the battery terminals and cables •...
Page 8 2.2 Symbol on the Type Label Symbol Explanation CE mark. The inverter complies with the requirements of the applicable CE guild lines UKCA mark. The inverter complies with the requirements of the applicable UKCA guidelines. UKNI mark. The inverter complies with the requirements of the applicable UKNI guidelines.
Page 9 Scope of Delivery J(optional) K(optional) L(optional)
Page 10 Item Designation Inverter Expansion Screws for Fixing Mounting Bracket M3 Screws for Fixing the inverter NTC cable Terminal block SC25-5 for battery cables Terminal block for PV and AC cables User Manual PVC tape for NTC cable Certificate card WIFI & LAN 2 in 1 kits (optional) Parallel operation kits (optional) LCD Display kits (optional) Note: Delivery marked with“（optional）”, which need to be...
Page 11 Product Introduction LIVOLTEK GF Series off-grid inverter is an important part of the off- grid solar power supply system, combining functions of inverter, MPPT solar charger and battery charger to offer uninterruptible power supply, which is ideal for off-grid backup power and self- consumption applications.
Page 12 4.2 Appearance View of the GF1 Series off-grid inverter Position Designation LED indicators Indicates the current working state of the inverter. Type Label The type label uniquely identifies the inverter. You will find the following information on the type label: •...
Page 13 4.3 Interfaces of the inverter Circuit breaker AC input port Parallel communication ports (for parallel mode) Reset function key for internal Wi-Fi or LAN EPS output on/off switch PV1 connection Area (PV string1 input ) AC output port Split LCD screen communication port Ethernet cabling port USB port for upgrading Status indicator for internal Wi-Fi or LAN...
Page 14 4.4 Dimensions...
Page 15 4.5 System Diagram Solar Power and AC Power available Solar Power and AC Power not available...
Page 16 4.6 Working Modes Introduction LIVOLTEK GF Series off-grid inverters is for autonomous solar energy generation, and incorporate batteries and generators to maintain a constant supply of electricity to your home, shack or farm. With the intelligent AC and PV complementation power supply function, the unit can seamless switch in auto between different power sources to offer uninterruptible power support.
Page 17 Charging source priority is Solar Power Only • 4.6.2 Backup Mode: The inverter works in this mode by default when the system installed in an area with a mains or diesel generator. This mode allows you to dedicate the full capacity of the battery for backup power supply during public electricity network fails, meanwhile reduce the frequency of battery charging and discharging to extend the battery life.
Page 18 4.6.3 Economic Mode This mode applies to areas where the electricity price is high, the unit allows you to choose on how to power your loads, which help to optimize self-consumption and reducing electricity costs. In Economic Mode: When the sunlight is sufficient, the system supplies power to loads •...
Page 19 4.7 Storage The following storage instructions apply if the inverter is not installed immediately. •Do not unpack the inverter (put desiccant in the original box if the inverter is unpacked). •The storage temperature must be always between -15° C and +60° C, and the storage relative humidity must be always between 0 and 95 %, non-condensing.
Page 20 Mechanical Mounting 5.1 Requirements for Mounting Make sure there is no electrical connection before installation. • In order to avoid electric shock or other injury, make sure that • holes will not be drilled over any electricity or plumbing installations. Always follow the instructions when moving and positioning the •...
Page 21 5.1.2 Environment Requirements The inverter must be installed in a ventilated environment to ensure good heat dissipation. Make sure the installation site meets the following conditions: Not in areas where highly flammable materials are stored. • Not in potential explosive areas. •...
Page 22 Never install the inverter horizontally, or with a forward tilt or with a backward tilt or even with upside down. The horizontal installation can result in damage to the inverter. Install the inverter upright or at a maximum back tilt of 15 degrees to facilitate heat dissipation. 5.2 Mounting Instructions Installation Tools (recommended but not limited to the following ones):...
Page 23 Mounting the Inverter Step1: Drill holes on the wall Locate the appropriate drilling • holes and mark it with a marker pen. Drill holes with driller, make sure • the holes are deep enough (at least 50mm) to support the inverter.
Page 24 Step 5: Final Assembly After connecting all wirings, please put bottom cover back by screwing four screws as shown below.
Page 25 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 equipments (PPE) during the electrical work. Danger to life due to a high voltage inside the inverter! Danger to life due to a high voltage inside the inverter! •...
Page 26 6.1 PV Connection Please only use the PV connectors from the accessory box for connection. Before connecting, please make sure: The voltage, current and power ratings of the panels to be • connected are within the allowable range of the inverter. Ensure polarity is correct.
Page 27 Wiring Connection Please follow below steps to implement PV module connection: Step1: Remove an appropriate length of the insulation layer from the positive and negative power cables using a wire stripper. Step2. Insert the exposed areas of the positive and negative power cables into the metal terminals of the positive and negative connectors respectively and crimp them using a crimping tool.
Page 28 PV1 connection 6.2 AC Input / Output Connection The grid voltage and frequency must be in the permissible • range. An external AC breaker (≥25A@GF1-3K48S1, ≥40A@GF1- • 5K48S1) must be installed between inverter and AC input power source. This will ensure the inverter can be securely disconnected during maintenance and fully protected from over current of AC input.
Page 29 Before making AC input/output connection, be sure to open • DC protector or disconnection first. Disconnect the AC circuit breaker and secure it against • reconnection. It’s very important for system safety and efficient operation to use appropriate cable for AC input connection. To reduce risk of injury, please use the proper recommended cable size as below.
Page 30 AC input connection:...
Page 31 AC output connection: Attention, it is important to make sure that the combined power required for all devices connected to this output does not exceed the power rating of the inverter. Earth connection essential before connecting supply • Be sure that AC power source is disconnected before attempting to •...
Page 32 To prevent this kind of damage, please check manufacturer of air conditioner if it’s equipped with time-delay function before installation. Otherwise, this inverter/charger will trig overload fault and cut off output to protect your appliance but sometimes it still causes internal damage to the air conditioner.
Page 33 6.3 Battery Connection • For safety operation and regulation compliance, it’s requested to install a separate DC over-current protector or disconnect device between battery and inverter. It may not be requested to have a disconnect device in some applications, however, it’s still requested to have over-current protection installed.
Page 34 3. Insert the battery wires flatly into battery connectors of inverter and make sure the bolts are tightened with torque of 2 Nm in clockwise direction. 4. Make sure polarity at both the battery and the inverter/charge is correctly connected and conductors are tightly screwed into the battery terminals.
Page 35 The lithium battery communication can only work when the battery BMS is compatible with the inverter. • This inverter can only be matched with LIVOLTEK BLF series low- voltage lithium batteries when you want to choose lithium batteries. If you choose other lithium batteries, please consult the manufacturer for compatibility.
Page 36 6.3.3 NTC Communication for Lead-acid battery The lead acid battery controls the inverter charging and discharging by NTC temperature sensing. Procedure: Step 1: Please find the NTC cable and a piece of tape in the accessories package of inverter. Step 2: Make the tape adhere to NTC interface. Step 3: Please clean battery surface before sticking Step 4: Insert the RJ45 port of NTC into BMS port of inverter, and make the interface adhere to the battery interface (any place but must be...
Page 37 6.4 Dry Contact Signal for Generator GF1 series inverter has the function of being able to connect to the generator, and the generator function provides the system function of uninterrupted power supply for some areas with long-term power outages. GF1 series inverter is connected to the generator through a dry contact (3A/250VAC) on the back panel of the inverter.
Page 38 APP User Manual, APP User Manual is available for free from website. Download and Install Livoltek APP Method 1: Go to Google Play or Apple App Store to search Livoltek, • download and install the app.
Page 39 Step 1: Open Livoltek APP, you can see the interface registration and local mode; Step 2: Select Bluetooth, go in and choose to connect to the Bluetooth of the corresponding model, and see the system running status is successful; (inverter...
Page 40 Step3: Tighten the screws, and then lock the lower cover of the inverter. Please go to the Livoltek APP or the external LCD screen to connect to the Internet and set it up. For specific details, please refer to the WiFi user manual.
Page 41 Step2： Step3： 6.5.3 External LCD Display control panel (Optional) LCD Display indicates the operating status and input/output power the information of the inverter. And the system parameters can also be set on it. Please follow user manual of LCD Display panel for the detailed wire connection.
Page 42 Step 1: The communication interface between the inverter and the external LCD screen is LCD, with an RJ45 connector. Insert the RJ45 connector into the port marked "LCD" on the inverter and tighten the cover. Step 2: Plug the other end of the RJ45 cable into the port of the external LCD screen.
Page 43 Ground, AC, DC and Communications cables are connected tightly • correctly and securely. Check there is no open circuit or short circuits at AC and DC • terminals using multi-meter. Idle terminals are sealed. • All safety warning symbols are intact and complete on the inverter. •...
Page 44 System Operation 7.1 Powering ON the Inverter Step 1: Switch ON the DC and AC circuit breaker Wait a few seconds and the inverter will start a self-test procedure when the indicator light flashes, when it is done successfully, the green led should be solid on and the graphical display should start displaying.
Page 45 After the inverter powers off the remaining electricity and heat may till cause electrical shock and body burns. Please only begin servicing the inverter ten minutes after the power-off. 7.3 LEDs and Graphical Display The inverter operation status can be obtained from observing LED indicator status.
Page 46 For more details, refer to Table LED indicator status below. Warning Error Message BATTERY GRID LOAD SYSTEM FAULT code ★ ★ Starting up Normal status ◎ ◎ ◎ ◎ ● WIFI ◎ ◎ ◎ ◎ ● communication PV energy weak Bit03 ◎...
Page 47 7.4 Parameter Setting Menu Structure The LCD or APP display information will be switched in turns by pressing “UP” or “DOWN” key. The entire display setting program structure is demonstrated as below chart. Object Name Description Display inverter information on the LCD Screen display.
Page 48 All advance setting can only be set by the technician or the installer with the installer password. 7.5 LCD Operation The main inter face is the default inter face, the inverter will automatically return to this interface when the system started up successfully or not operated for a period of time.
Page 49 ➣ Menu The menu is another interface for users to change settings or obtain information. - When the LCD displays the main interface, click "OK" to enter this interface. - The user can select up and down the menu, and press the "OK" key to confirm.
Page 50 AC Input Users can view the voltage/current/power/ frequency input by the grid here. AC Input Voltage: 0.0V Current: 0.0A Power: 0.0W Frequency: 0.0Hz Solar Users can see the voltage/current/power/frequency on the PV side here. Solar Voltage: 0.0V Current: 0.0A Power: 0.0W Battery Users can check the battery voltage/current/power/capacity/temperature.
Page 51 Fault EPS Over Load Inter Temp High EPS Over Load EPS Volt Fault AC Freq Fault Inter Temp High EPS Over Load ➣ History The history data contains five pieces of information: on-grid power of the inverter, off- grid power generation, power of the meter /CT and error Error logs. History Power consumption Solar yield...
Page 52 Battery Discharge Yield Today: 0.0 Kw.h Month: 0,0 Kw.h Total: 1000.0Kw.h Error logs Users can see the most recent seven error logs. Error logs EPS Volt Fault AC Freq Fault ➣ Setting Users can set the inverter time, application language, power parameters and historical data cleaning here.
Page 53 Languages English Basic The user can set the basic settings of the inverter here, such as: the battery type with the inverter, the working mode of the inverter, whether the power saving function of the inverter is turned on, whether the clock of the inverter is turned on, and the inverter Ethernet selection.
Page 54 Power saving Users can turn on the power saving function of the inverter here. This function is turned off by default. Power saving Enable Disable Alarm Control Users can turn on the alarm control function of the inverter here. This function is turned off by default.
Page 55 Ethernet IP Setting IP Setting DHCP IP Address IP Address Static Subnet mask 000.000.000.000 Gateway IP Setting IP Setting Gateway Dns Address 000.000.000.000 000.000.000.000 ➣ Advanced setting Users can enter the advanced settings to set the range of grid input voltage, output power to grid voltage, output power to grid frequency, lead-acid battery parameter settings, advanced settings password change, inverter factory reset, inverter's Firmware version.
Page 56 Output voltage Here the user can select the voltage according to the local grid voltage standard. Output voltage 110V 120V Output frequency The user can select the frequency here according to the local grid standard. Output frequency 50Hz 60Hz ➣ Lead-acid Users can set the Absorption charge voltage, Absorption charge time, float charge voltage, DC minimum cut-off voltage, charge and discharge current, and battery balance of the lead-acid battery here.
Page 57 3 stages during charging, which can increase its charging efficiency. In stage 1, it will be charged with constant current till the voltage rises to charge absorption volt to enter stage 2. In stage 2, it can be charged more efficiently with constant voltage till charge current is more than 300W.
Page 58 Change password Users can change the password here, (used by the installer, not allowed to change at will) Change password Restore User can set inverter restoration here. Restore Update select Users can set up the inverter and battery firmware upgrade by inserting the U disk here.
Page 59 ➣ History clear Users can clear historical data here. History clear ➣ About Users can check the inverter model/SN number, WiFi version number, software version number, LCD version number, Bluetooth name and Bluetooth here. About Inverter Type:GF1- Serial Number: WiFi Version: ARM Version: MDSP Version: SDSP Version:...
Page 60 Troubleshooting This chapter is a guide for troubleshooting problems of GF series inverters. When the inverter has an exception, its basic common warning and exception handling methods are shown in the table below. Warning Error Explanation/Possi Suggestion code Message ble causes PV input voltage Check if voltage and number of PV PV over...
Page 61 1. Reduce the connected load by switching off some equipment, and wait Overload error. for a while to check if it can The inverter is automatically recover to the normal EPS Over Bit10 overload 110% operating status after the fault is Load and more than 5 rectified.
Page 62 3. Reconnect the BMS cable, if the error lost. happens again, contact your dealer for technical support. 1. Check if the firmware version is correct from LCD or Livoltek-portal. Firmware Software version Bit27 2. Restart inverter, If the error happens...
Page 63 Technical Data Model GF1-3K48L1 PV Input Recommended max. PV power (Wp) 3300 Max. Open Circuit Voltage (V) MPP Range Voltage (V) 90~480 Max. PV Current (A) Max. Short Circuit Current (A) No. of MPPTs/Strings per MPPT AC Input Input Voltage Waveform Sinusoidal (Utility or Generator) Rated Input Voltage(V) Selectable Voltage Range(V)
Page 64 Overcharge Protection(V) 63 (Adjustable) Charging Algorithm 3-Step Communication with BMS Solar Charger Type MPPT Max. Solar Charging Current (A) Max. AC Charging Current (A) Max. Charging Current (A) General Data Dimensions(W*H*D mm) 330*535*130 Weight (kg) Ingress Protection IP21 Cooling Operating Temperature Range(℃) -10 ~ 55 Storage Temperature (℃) -15 ~ 60...
Page 65 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.
Page 67 Warranty Card Registration Dear customer, thank you for choosing LIVOLTEK product. For registering product warranty, please prepare everything ready and register on https://www.livoltek.com/registration.html. Product Information Product Type Product S/N Installation date Installation Company Personal Information Your name Your contact number...

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Gf1-3k48l1