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Table of Contents
Related Manuals for LIVOLTEK GT3-17K-D
Summary of Contents for LIVOLTEK GT3-17K-D
- Page 1 Ver 00 GT3 17K-30K...
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Page 2: Table Of Contents
Contents Forward Application Model Intended Audience Symbol Conventions 1 Safety Precautions 1 1 Personnel Safety 1 2 The PV Inverter Protection 1 3 Installation Safety 1 4 Electrical Connections 1 5 Operating and Commissioning 1 6 Maintenance 1 7 Additional Information 2 Overview of the Inverter 2 1 Functional Models 2 1 1 Function... - Page 3 4 4 2 Installation Mode Requirements 4 5 Support mounting the Inverter 4 6 Installation Self check 5 Electrical Connections 5 1 Connecting Protection Ground PGND Cables 5 1 1 Preparation 5 1 2 Wiring Procedures 5 2 Connecting AC Output Cables 5 2 1 Preparation 5 2 2 Procedure of Connecting AC Cables 5 3 Connecting the PV Strings...
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Page 4: Forward
Forward Dear User, Thank you so much for your choosing GT3 17K-30K, the latest generation of grid-tied PV Strings inverter (hereinafter referred to as the inverter) designed and developed by our company. This user manual introduces the inverter in terms of its installation, electrical connections, operation, commissioning, maintenance, and troubleshooting. -
Page 5: Symbol Conventions
Symbol Conventions Safety symbols used in this manual which highlight potential safety risks and important safety information are listed as follows Symbol Description Indicates an imminently hazardous situation which if not correctly DANGER followed will result in serious injury or death Indicates a potentially hazardous situation which if not correctly WARNING followed could result in serious injury or death... -
Page 6: Safety Precautions
1 Safety Precautions Before beginning your journey please read these safety precautions in User Manual carefully 1 1 Personnel Safety a. The PV inverter must be installed electronically connected operated and maintained through specially trained technician; The qualified technician must be familiar with the safety regulations of electrical system working process of PV power generation system, and standards of local power grid;... -
Page 7: 4 Electrical Connections
1 4 Electrical Connections Before installing the inverter check all electrical ports to ensure no damage and no short circuit Otherwise personal casualty and or fire DANGER will occur. 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 8: 7 Additional Information
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 Check the relevant safety and performance of the inverter rectify any faults that may compromise the inverter security performance before restarting the inverter. -
Page 9: Overview Of The Inverter
2 Overview of the Inverter This chapter introduces the inverter and describes its functional model network application appearance dimensions and working process etc 2 1 Functional Models 2 1 1 Function This series is a three-phase grid-tied PV string inverter transformer less that converts the DC power generated by PV strings into AC power and feeds the power into power grid. -
Page 10: 3 Outline And Dimensions
PV strings inverter AC Distribution Unit low-voltage power grid Figure 2 2 a low-voltage grid-tied PV power system These series support the power grid modes TN-S, TN-C, TN-C-S, and TT, as shown in Figure 2.3. Inverter Inverter Inverter Inverter TN S TN C TN C S Figure 2 3 Power grids supported by these series inverters... -
Page 11: 3 2 Outline
2 3 2 Outline Figures 2 5 to 2 7 show the outline of the inverters as follows 1 PV Indicator 2 Grid Indicator 3 COM Indicator 4 Warning Indicator Figure 2 5 The front view and amplification effect of LED indicator area Install the backboard Figure 2 6 The rear view of PV inverter PV Strings connectors... -
Page 12: 4 Working Modes
2 4 Working Modes Three working modes of the inverter are shown as follows standby operating and shutdown Table 2 1 shows the conditions for the inverter to switch between working modes Modes Description The PV inverter enters the standby mode when the input voltage of PV Strings can enable auxiliary power supply to run >... -
Page 13: Storage
3 Storage This chapter describes the storage requirements for the inverter. The following storage instructions apply if the PV inverter will not be deployed immediately: Do not unpack the inverter (put desiccant in the original box if the PV inverter is unpacked) >... -
Page 14: Installation
4 Installation Do not install the inverter on flammable building materials or in an DANGER area that stores flammable or explosive materials. Do not install the inverter in a place where personnel are likely to come into contact with its enclosure and heat sinks to avoid electrical CAUTION shock/burn. -
Page 15: 2 Moving The Inverter
If any damage mentioned above is found contact the dealer NOTICE immediately. 4 2 Moving the Inverter After checking the outer packing, move the PV inverter to the designated installation position horizontally, as shown in Figure 4.2. Figure 4 2 Moving the inverter The inverter is relatively heavy! To prevent device damage and personal CAUTION injury it need two people to move the inverter and handle with care... -
Page 16: 3 2 Compliance And Safety Symbols
4 3 2 Compliance and Safety Symbols Safety symbol Description Electrical shock! There are residual voltages in the PV inverter It needs 10 minutes 10min to finish discharge. The PV inverter must not be touched when in operation Its enclosure and heat sinks are extremely hot. Electrical shock! This part is charged Only qualified and / or trained electrical technicians are allowed to perform operations on the inverter. - Page 17 The inverter must be installed in a well ventilated environment to ensure good heat dissipation The inverter must be free from direct exposure to sunlight rain and snow to extend its service life. It is recommended that the inverter be installed in a sheltered place. If no shelter is available, build an awning, as shown in Figure 4.3.
- Page 18 >500 >1000 >200 >200 >600 >600 Distance from air duct to obstacle Do not place obstacles in the dotted frame to avoid blocking the air duct Figure 4 4 Installation Space Requirements unit mm When installing multiple inverters, install them along the same line (as shown in Figure 4.5) if sufficient space is available, and install them in triangle mode (as shown in Figure 4.6) or in stacked mode (as shown in Figure 4.7) if no sufficient space is available.
- Page 19 Figure 4 6 Installation in triangle mode (unit: mm) Figure 4 7 Installation in stacked mode (unit: mm) The clearance between multiple inverters must be increased to NOTICE ensure proper heat dissipation when they are installed in a hot area.
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Page 20: 4 2 Installation Mode Requirements
4 4 2 Installation Mode Requirements Install the inverter upright or at a maximum back tilt of 15 degrees to facilitate heat dissipation. Below are some correct / wrong installation modes as shown in Figure 4 8&4 9 The correct installation mode upright back tilt Figure 4 8 The correct installation mode... -
Page 21: 6 Installation Self Check
Mount the inverter on the rear panel and keep them aligned with each other , as shown Step 2 in Figure 4 11. Figure 4 11 Mounting the inverter Tighten one screw at the right of the inverter and the retaining screw on the rear panel, Step 3 and ensure that they are secured,... -
Page 22: Electrical Connections
5 Electrical Connections Before performing any electrical connections, ensure that both DC and AC Switches are OFF. Otherwise, fatal injury can occur due to DANGER the high voltage caused from AC and DC cables. CAUTION Grounding the PV Strings needs below prerequisites: An isolation transformer must be installed on the AC side of each inverter;... -
Page 23: 1 2 Wiring Procedures
It is recommended that the ground cable be connected to a nearby ground position. For a system with multiple inverters connected in NOTE parallel, connect the ground points of all inverters to ensure equipotential connections. 5.1.2 Wiring Procedures Step 1 Remove an appropriate length of the insulation layer from the PGND cable using a wire Stripper;... -
Page 24: 2 Connecting Ac Output Cables
5.2 Connecting AC Output Cables 5 2 1 Preparation The AC power cable and AC terminals have been prepared with below requirements. a AC power cable Outdoor multi copper cores cables are recommended Table 5 1 describes the specifications. Cable Outer Cross-sectional Area Diameter( Inverter Model... -
Page 25: 2 2 Procedure Of Connecting Ac Cables
5 2 2 Procedure of Connecting AC Cables Remove an appropriate length of the jacket and insulation layer from the AC output cable Step 1 as shown in Figure 5.4. specification:M6 L2 L1 2mm 3mm) = +( 120(recommend) Figure 5.4 Stripped length (unit: mm) Insert the exposed core wires into the crimp area of the OT terminal and crimp them Step 2 using hydraulic pliers. - Page 26 Loosen the four screws lock on AC OUTPUT door, and connect L1, L2, L3, N and PE Step 3 through AC OUTPUT terminal cover to the terminal block, use a screw driver to tighten screws to a torque of 3N·m, as shown in Figure 5.6. Figure 5.6 Tighten AC wire Lock the AC OUTPUT terminal shell back to the original position, Stretch all the lines on Step 4...
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Page 27: 3 Connecting The Pv Strings
5 3 Connecting the PV Strings PV Strings connection needs below prerequisites otherwise an DANGER electrical shock can occur. PV modules generate electric energy when exposed to sunlight and can create an electrical shock hazard Therefore when connecting the PV modules shield them with opaque cloth Before connecting DC input power cables ensure that the voltage on the DC side is within the safe range and that the DC SWITCH on the inverter is OFF Otherwise high voltage may result in electric shock. -
Page 28: 3 1 Preparation
5 3 1 Preparation PV Strings DC input cable and connectors have been prepared with below requirements: Route connecting for the installation of PV strings and the inverter is shown in Table 5.2 Input Route Number of Input Route Inverter model Connected to any route Connected to routes 1 &... -
Page 29: 3 2 Procedure Of Connecting The Pv Strings
c Connectors of PV Strings: Positive and negative DC input connectors are used, as shown in Figure 5.8 and Figure 5.9. the insulation layer locking nut the insulation layer locking nut Figure 5.8 Positive connector compositions Figure 5.9 Negative connector compositions Positive and negative metal connectors are packed with positive and negative connectors respectively when shipped out. - Page 30 Step 2 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, as shown in Figure 5.11. Figure 5.11 Crimping a metal connector Step 3 Insert the crimped positive and negative power cables into the corresponding positive and negative connectors until a "click"...
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Page 31: 4 Connecting Communication Cables
800 00 RANGE MAXMIN Hz % h FE FUSED FUSED Figure 5 14 Checking the voltage of every route Strings Step 6 Insert the positive and negative connectors into their corresponding terminals of the inverter until a click sound is heard as shown in Figure 5 15 "... -
Page 32: 5 Installation Verification
WIFI Module Following figure show inverter’s interface to connect WIFI accessory, please refer user manual of accessory for connecting method and its setting. Module Function description WIFI module implements communication with Cloud server through wireless network to monitor PV inverter's data status. WIFI For more details, refer to WIFI Product Application Manual. -
Page 33: System Operation
6 System Operation 6 1 Powering ON the Inverter Step 1: Switch ON the AC circuit breaker. Set the DC SWITCH of the inverter to ON Step 2: Observe statuses of LED indicator lights on the inverter according to Table 7 2 Step 3: When LED status lights display the inverter has entered NOTE... -
Page 34: User Interface
7 User Interface Display screen of inverter is composed of LED indicator and LCD LCD is optional for some models of inverter LED indicator includes PV Indicator Grid Indicator COM Indicator and Warning Indicator. 1 PV indicator 2 Grid indicator 3 COM indicator 4 Warning indicator LED indicator... - Page 35 View Inverter status The inverter operation status can be obtained from observing LED indicator status For more details refer to Table 7 1 LED indicator status View and Set Inverter running data The inverter operation data can be obtained from the mobile APP downloaded through Bluetooth communication For more details refer to the APP User Manual Warning Grid...
- Page 36 Leakage current HCT abnormal System fault DC link voltage unbalance DC link over voltage Internal Communications Fault Software version incompatibility EEPROM fault Sampling inconsistency Invert circuit abnormal Boost circuit abnormal Table 7 2 LED indicator status for common fault of the inverter , ○...
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Page 37: Maintenance
8 Maintenance Before maintaining and commissioning inverter and its peripheral distribution unit switch off all the charged terminals of the inverter WARNING and wait at least 10 minutes after the inverter is powered off. 8 1 Routine Maintenance Maintain Maintenance Check Item Check Content content... -
Page 38: 2 The Inverter Troubleshooting
8 2 The Inverter Troubleshooting When inverter enters in shutdown mode abnormally the alarm light is illuminated Table 8 2 describes the troubleshooting measures for common fault alarms in the inverter. Alarm Name Causes Measures Recommended Grid 1 If the alarm occurs accidentally possibly the Over Voltage power grid is abnormal accidentally No extra action is needed. - Page 39 The insulation resistance against the ground at the 1 If the alarm occurs accidentally possibly the external input side circuits are abnormal accidentally The inverter Residual decreases automatically recovers to the normal operating status Current during the inverter after the fault is rectified. Abnormal operation which 2 If the alarm occurs repeatedly or lasts a long time...
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Page 40: 3 Removing The Inverter
remote monitor If modem or other data logger is used please reboot Communications displays zero it if still does not work after rebooting contact your outage power generation dealer. remote monitor Output switch Check if DC switch is damaged and if not switch it to displays no output tripping ON If it still doesn’t work contact your dealer... - Page 41 Step 2: Remove the inverter from the rear panel. Step 3: Remove the rear panel. Before removing DC input connector double check DC input switch WARNING is turned to OFF to avoid inverter damage and personal injury. Fan Maintenance External FANs are provided for 25K/28K/30K models, check the heat sink and the inlet/outlet of external FANs periodically, clean them, and ensure that they are free from dust and blockage.
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Page 42: Disposal Of The Inverter
9 Disposal of the Inverter The PV inverter and its packing case are made from environment-friendly materials If the inverter service life has expired do NOT discard it with household garbage dispose the inverter in accordance with local environmental laws and regulations. -
Page 43: Technical Specifications
10 Technical Specifications GT3-17K-D GT3-20K-D GT-22K-D Model Efficiency 98.2% Max. Efficiency 97.7% European Efficiency Input(PV) Max. Input Voltage 1000V Rated Input Voltage 620V Max. Input Current 50A (25A/25A) Max.Short Circuit Current 60A(30A/30A) Start Input Voltage/Min. Operating Voltage 250V/180V MPPT Operating Voltage Range... - Page 44 General Topology Transformerless IP Rating IP65 Night Self Consumption <1W Cooling Natural cooling Operating Temperature Range -25 ~60 (up to 45°C without derating) Relative Humidity Range 0-100% 4000m(>2000m derating) Max. Operating Altitude <30dB(Measured at 1m) Noise Dimensions (W*H*D) 555*446*270 mm Weight 37kg HMI &...
- Page 45 GT3-25K-D GT3-28K-D GT3-30K-D Model Efficiency 98.2% Max. Efficiency European Efficiency 97.7% Input(PV) Max. Input Voltage 1000V Rated Input Voltage 620V Max. Input Current 75 A (37.5A/37.5A) Max.Short Circuit Current 84A(42A/42A) Start Input Voltage/Min. Operating Voltage 250V/180V MPPT Operating Voltage Range 180V-960 MPPT Operating Voltage Range (Full-Load) 480V-800V...
- Page 46 Cooling Fan cooling Operating Temperature Range -25 ~60 (up to 45°C without derating) Relative Humidity Range 0-100% 4000m(>2000m derating) Max. Operating Altitude <50dB(Measured at 1m) Noise Dimensions (W*H*D) 555*446*270 mm Weight 40kg HMI & COM APP +LED Display Bluetooth,WiFi,RS485 Communication Notes: 1 Grid power voltage range can be set according to national voltage standards ) 2 Power grid frequency range can be set according to national grid standards...