LIVOLTEK GT1-3K-S User Manual
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LIVOLTEK GT1-3K-S User Manual

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GT1 3K-6K

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Summary of Contents for LIVOLTEK GT1-3K-S

  • Page 1 Ver 00 GT1 3K-6K...

  • 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 3 2 Compliance and Safety Symbols 4 4 Installation Requirements 4 4 1 Determining the Installation Position 4 4 2 Installation Mode Requirements 4 5 Installing a Rear Panel 4 6 Installing the Inverter 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...

  • Page 4: Forward

    Please read through the manual carefully before installing and using the inverter, and keep the manual well for future reference. Application Model Grid-tied PV string inverter GT1-3K-S GT1-5K/6K-D Intended Audience This user manual is intended for photovoltaic (PV) inverter operating personnel and qualified electrical technicians.

  • 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 1 2 Model Description Figure 2 1 shows a model number of the inverter using 3K as an example S:single MPPT D:double MPPT GT1-3K-S Power class code 1：single phase Figure 2 1 Model number descriptions 2 2 Network Application 2 2 1 Grid-tied PV Power Systems The series applies to grid-tied PV power systems for outdoor power stations.

  • 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 2 3 Outline and Dimensions 2 3 1 Outline Figures 2 3 to 2 7 show the outline of the inverters as follows 3K PV Inverter with Single MPPT Input (unit: mm) Figure2.
  • Page 11 Grid Indicator Indicator Warning Indicator Figure 2 5 The front view and amplification effect of LED indicator area 5K/6K PV Inverter with Double MPPT Input 3K PV Inverter with Single MPPT Input Figure 2 6 The rear view of this series inverter 1 Vent valve DC isolation breaker 3 PV Strings terminal...

  • Page 12: 4 Working Process

    2.4 Working Process 2.4.1 Basic principle Description The 5k/6K PV Inverter with Double MPPT Input receives inputs from two strings of PV panel (3K PV Inverter with Single MPPT Input receives inputs from only one sting of PV panel). Then the inputs are grouped into two independent MPPT routes inside the inverter to track the maximum power point of the PV panel.

  • Page 13: 5 Working Modes

    2 5 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 >...

  • Page 14: 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 15: 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 16: 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 Hold the handles on both sides of the inverter as shown in Figure 4 2 Figure 4 2 Moving the inverter >Do not place the PV inverter with its wiring terminals contacting the floor because the power ports and signal ports at the bottom of the...

  • Page 17: 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 5 minutes 5mins 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 18 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 19 >500 >500 >200 >200 >600 the front view the lateral view Figure 4 4 Installation Space Requirements unit mm When installing multiple inverter, 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 20 Figure 4 6 Installation in triangle mode (unit: mm) 1000 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.

  • Page 21: 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 Figures 4 8&4 9 The correct installation mode upright Lean back Figures 4 8 The correct installation mode...
  • Page 22 Step 1 Move out the rear panel from the packing case. Step 2 Determine the positions for drilling holes (as shown in Figure 4.10) using the rear panel. Φ8 Φ8 3K PV Inverter Dimensions for Single 5K/6K PV Inverter Dimensions for MPPT Route Input Double MPPT Routes Input Figure 4.10 Determine the positions for drilling holes unit mm)
  • Page 23 a Drill a hole in a marked position to a depth of 60 mm using a hammer drill with a 10mm b Partially tighten an expansion bolt, vertically insert it into the hole, and knock the expansion bolt completely into the hole using a rubber mallet. Ø10,drilling depth 60 mm Punch holes Install expansion bolts...

  • Page 24: 6 Installing The Inverter

    4.6 Installing the inverter Follow below procedures: Step 1 The installer to hold the handle at both sides of the inverter and then lift and stand the inverter. Step 2 Mount the inverter on the rear panel and keep them aligned with each other, as shown in Figure 4.14.

  • Page 25: 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. Grounding the PV Strings needs below prerequisites: CAUTION An isolation transformer must be installed on the AC side of each inverter;...

  • Page 26: 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 27: 2 Connecting Ac Output Cables

    Step 4 Secure the PGND cable (done by step 1 & 2) using the ground screw and tighten the screw to a torque of 1.2 N·m using a socket wrench, as shown in Figure 5.4. AC OUTPUT Figure 5.4 Secure the PGND cable 5.2 Connecting AC Output Cables 5 2 1 Preparation The AC power cable and AC terminals have been prepared.

  • Page 28: 2 2 Procedure Of Connecting Ac Cables

    An independent circuit breaker must be installed on the AC side of each WARNING inverter to ensure that the inverter can be safely disconnected from the power grid. Do not connect loads between the AC output terminals of the inverter WARNING and circuit breaker.
  • Page 29 Step 3 After AC wiring, route the AC connector into the AC terminal of the inverter and double check it, as shown in Figure 5.7. AC OUTPUT Figure 5.7 Connecting AC Connector...

  • Page 30: 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 31 PV Strings DC input cable and connectors have been prepared; Table 5.2 lists the recommended outdoor copper-core DC input cable specifications. Cross-sectional Area(mm ) Cable OuterDiameter mm Inverter model Cable Type Range Range Recommended Value Common PV cables in the industry mo del:PV 5K/6K Table 5.2 Recommended DC input cable recommended specifications...
  • Page 32 Procedures of connecting the PV Strings Step 1 Remove an appropriate length of the insulation layer from the positive and negative power cables using a wire stripper, as shown in below Figure. Positive metal connector Negative metal connector Figure 5.10 Removing insulation layer for DC cable (unit: mm) 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.
  • Page 33 Step 4 Tighten the locking nuts on the positive and negative connectors using a removal wrench, as shown in Figure 5.13. Figure 5.13 Locking connectors Step 5 Measure the voltage of every route Strings using a multimeter. Ensure that the polarities of the DC input power cables are correct, as shown in Figure 5.14.

  • Page 34: 4 Connecting Communication Cables

    5.4 Connecting Communication Cables 5.4.1 Communication Mode Description You can use the following communication modes to implement communication: Bluetooth, WIFI all of which are described as follows. Bluetooth Module You can turn on the Bluetooth function of the mobile phone, and set parameters and monitor data of the inverter through the mobile APP.

  • Page 35: 5 Installation Verification

    5 5 Installation Verification Check the following items after the inverter is installed according to Table 5 4 . . 1 No other objects put on the PV inverter 2 All screws especially the screws used for electrical connections are tightened 3 The PV inverter is installed correctly and securely 4 Ground AC DC and Communications cables are connected tightly correctly and securely 5 Check there is no open circuit or short circuits at AC and DC terminals using multimeter...

  • Page 36: System Operation

    6 System Operation 6 1 Powering ON the Inverter Step 1: Switch ON the AC circuit breaker. Step 2: If the inverter has a switch, turn the switch to "ON" state Step 3: Observe statuses of LED indicator lights on the inverter according to Table 7 2 When LED status lights display the inverter has entered NOTE grid-connecting it means the inverter is operating well Any query...

  • Page 37: User Interface

    7 User Interface The LED indicator includes PV Indicator, Grid Indicator, COM Indicator, and Warning Indicator Grid Indicator Indicator Warning Indicator LED indicator Status Description Power grid abnormal. The conditions for feed-in operation are blink not yet met. times Feed-in operation. The blink every cycle lasts 30s of the grid indicator present power size and after that the indicator Grid...

  • Page 38: 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 39: 2 The Inverter Troubleshooting

    8 2 Inverter warning and exception handling When the inverter has an exception, its basic common warning and exception handling methods are shown in the table 8.2. Alarm Name Causes Measures Recommended Grid 1 If the alarm occurs accidentally possibly the power grid is abnormal accidentally No extra Over Voltage action is needed.
  • Page 40 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...

  • Page 41: 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 42 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.

  • Page 43: 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 44: Technical Specifications

    10 Technical Specifications GT1-6K-D GT1-3K-S GT1-5K-D Model Efficiency 97.5% Max. Efficiency 97.5% 97.5% European Efficiency 97.1% 96.7% 97.0% Input(PV) Max. Input Voltage 600V Rated Input Voltage 360V Max. Input Current 12.5A 22A (2*11A) Max.Short Circuit Current 30A(2*15A) Start Input Voltage/ Min. Operating Voltage...
  • Page 45 Leakage current protection Support General Topology Transformerless IP Rating IP65 Night Self Consumption <1W Cooling Natural cooling Operating Temperature Range -25 -60 Relative Humidity Range 0-100% 4000m(>2000m derating) Max. Operating Altitude <30dB(Measured at 1m) Noise Dimensions (W*H*D) 285*336*125mm 335*426*125mm Weight 8.8KG 12.8KG HMI &...

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Gt1-5k-dGt1-6k-d

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