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Summary of Contents for LIVOLTEK GT3-50K
- Page 1 Ver 00 GT3 50K-60K...
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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 1 Determining the Installation Position 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...
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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 GT3-50K GT3-60K 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
Do not connect PV modules in parallel to several PV inverters for WARNING operation. 2 1 2 Model Description Figure 2 1 shows a model number of the inverter using 50K as an example GT3-50K Power class code 3：three phase Figure 2.1 Model number descriptions 2.2 Network Application 2.2.1 Grid-tied PV Power Systems... -
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 Inverter Inverter Inverter Inverter TN S TN C TN C S Figure 2 3 Power grids supported by these series inverters 2 3 Outline and Dimensions 2 3 1 Outline Figures 2 4 to 2 6 show the outline of the inverters as follows PV Indicator... -
Page 11: 3 2 Dimensions
Reserved for installing rear panel Figure 2 5 The rear view of this series inverter 1. DC isolation breaker 2. Vent valve 3. PV Strings connectors 4. Communications interface 5. RS485 6. AC OUTPUT CONNECTORS 7. FAN Figure 2 6 The bottom view of this series inverter 2 3 2 Dimensions Figures 2 7 shows the dimensions of these series inverters as follows Figures 2 7 The dimensions of this series unit mm... -
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 >... -
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 50K 60K
If any damage mentioned above is found contact the dealer NOTICE immediately. 4 2 Moving the 50K/60K 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 The inverter is relatively heavy! To prevent device damage and personal CAUTION... -
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 10mins 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 >600 >400 >1000 >400 >600 >600 Do not place obstacles in the dotted frame Distance from air duct to obstacle to avoid blocking the air duct Figure 4 4 Installation Space Requirements unit mm c 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 or in stacked mode (as shown in Figure 4.6) if no sufficient space is available.
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Page 19: 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 7&4 8 The correct installation mode upright back tilt Figures 4 7 The correct installation mode... -
Page 20: 6 Installation Self Check
Step 2 Tighten the rear panel with the support using M12 bolt to a torque of 42 N m (as shown in Figure 4 10) Figure 4 10 Tightening the rear panel with the support Step 3 Mount the inverter on the support and tighten the inverter with rear panel using screws, as shown in Figure 4 11 Anti-theft lock is recommended to... -
Page 21: 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 22: 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 23: 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. Cross sectional Recommended Cable type Area of single... -
Page 24: 2 2 Procedure Of Connecting Ac Cables
5 2 2 Procedure of Connecting AC Cables AC wiring chamber on the right side of the inverter and before AC wiring remove these four retaining screws uninstall Earth wire and remove the cover of AC wiring chamber Please follow below steps to ensure equipment and personal safety. -
Page 25: 3 Connecting The Pv Strings
For operation convince and safety the inverter requires multi-stranded wire and crimping terminals with a proper crimping tool before wiring. NOTICE To avoid potential risk 125A / 400VAC overcurrent protection device is recommend to add on the output terminal. 5 3 Connecting the PV Strings PV Strings connection needs below prerequisites otherwise an DANGER electrical shock can occur. -
Page 26: 3 1 Preparation
5 3 1 Preparation PV Strings DC input cable and connectors have been prepared refer to No of DC input terminals at the bottom of inverter shown in below figure 50K with 10 routes and 60K with 12 routes if quantity of PV strings is less than number of input on inverter you can refer to below Table for the installation of PV strings and the inverter. - Page 27 Connectors of PV Strings: Positive and negative DC input connectors are used, as shown in Figure 5.6 and Figure 5.7. the insulation layer locking nut the insulation layer locking nut Figure 5.6 Positive connector compositions Figure 5.7 Negative connector compositions Positive and negative metal connectors are packed with positive and NOTE negative connectors respectively when shipped out.
- Page 28 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 5.9. Figure 5.9 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 29: 4 Connecting Communication Cables
800 00 RANGE MAXMIN Hz % h FE FUSED FUSED Figure 5 12 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 13 Figure 5.13 Connecting to the inverter Step 7 After connecting the PV strings, ensure that all connectors are in position by checking for resistance when a slight pull is applied. -
Page 30: 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 31: 4 2 Connecting Rs485 Communication Cables
6 System Operation 6 1 Powering ON the Inverter Step 1: Switch ON the AC circuit breaker. Step 2: Set the DC SWITCH of the inverter to ON 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 32: 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 33: 4 3 Setting Rs485 Communication Address
Warning Grid Warning code indicator indicator indicator indicator Normal status Starting up WLAN WI-FI RS485 communication PV normal Grid over voltage Grid under voltage Grid absent Grid over frequency Grid under frequency Grid unbalance PV over voltage PV under voltage Weak radiation Strings abnormal Inverter over temperature... - Page 34 Invert circuit abnormal Boost circuit abnormal Table 7 2 LED indicator status for common fault of the inverter , ○ Note means light ON light off blink keep original status.
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Page 35: Maintenance
8 Maintenance Before maintaining and commissioning inverter and its peripheral WARNING distribution unit switch off all the charged terminals of the inverter and wait at least 10 minutes after the inverter is powered off. 8 1 Routine Maintenance Maintain Maintenance Check Item Check Content content... -
Page 36: 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 1 If the alarm occurs accidentally possibly the Grid power grid is abnormal accidentally No extra Over Voltage... - Page 37 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 38: 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 39 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 Outer fans are provided to cool the inverter check periodically and ensure that air inlets and outlets of fans are free from dust and blockage check whether the ambient temperature of the inverter exceeds the upper limit If yes improve ventilation to decrease the temperature If there is any abnormal noise emitted from the fan replace the relevant parts timely...
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Page 40: 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 41: Technical Specifications
10 Technical Specifications GT3-50K GT3-60K Model Efficiency Max. Efficiency 98.3% 98.3% European Efficiency Input(PV) Max. Input Voltage 1100V Rated Input Voltage 620V Max. Input Current 110A (33A/33A/22A/22A) 132 A (33A/33A/33A/33A) Max.Short Circuit Current 140A(42A/42A/28A/28A) 168A (42A/42A/42A/42A) Start Input Voltage/ Min. Operating Voltage... - Page 42 Surge Arrester DC Type II /AC Type II Insulation detection Support Leakage current protection Support General Topology Transformerless IP Rating IP65 Night Self Consumption <1W Cooling Fan cooling Operating Temperature Range -25 ~60 (up to 45°C without derating) Relative Humidity Range 0-100% 4000m(>2000m derating) Max.
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