1. Introduction
This manual provides essential information for the safe and efficient operation of your Techfine GA Series Hybrid Solar Inverter. This high-frequency inverter is designed for both on-grid and off-grid photovoltaic (PV) systems, offering power options from 3KW to 6.2KW. It features a built-in 100A MPPT charger and can operate without a battery, making it a versatile solution for various energy needs.
2. Safety Instructions
Please read and understand all safety instructions before installation, operation, or maintenance of the inverter. Failure to follow these instructions may result in electric shock, fire, or serious injury.
- Installation must be performed by qualified personnel in accordance with local electrical codes and regulations.
- Ensure the inverter is disconnected from all power sources (PV, battery, grid) before performing any maintenance or wiring.
- Do not attempt to disassemble or repair the inverter yourself. Contact qualified service personnel.
- Keep the inverter away from flammable materials, moisture, and direct sunlight.
- Ensure proper ventilation around the inverter to prevent overheating.
- Verify correct polarity for all DC connections (PV and battery) to avoid damage.
3. Product Overview
3.1. Components and System Diagram
The Techfine Hybrid Solar Inverter integrates various components to manage your solar energy system efficiently. The diagram below illustrates a typical setup.
3.2. Ports and Terminals
Familiarize yourself with the connection points on your inverter for proper installation.
3.3. Control Panel
The intuitive control panel allows for monitoring and configuration of the inverter's settings.
Video 1: Demonstration of the inverter's touchable colorful display and navigation through various settings like solar input, battery status, grid information, load details, and system setup options.
3.4. Dimensions
4. Installation
Proper installation is crucial for the safe and optimal performance of your inverter. Refer to the detailed wiring diagrams and instructions in the full user manual (PDF) for specific steps.
- Mounting: Choose a suitable location that is dry, well-ventilated, and protected from direct sunlight and extreme temperatures. Ensure sufficient clearance around the inverter for airflow. The operating temperature range is -10℃ to 50℃.
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Electrical Connections:
- PV Input: Connect your solar panels to the PV INPUT terminals, ensuring correct polarity and voltage within the MPPT input voltage range (120-500Vdc) and maximum PV input voltage (500Vdc).
- Battery Connection: Connect your 48Vdc battery bank to the DC INPUT+ and DC INPUT- terminals, observing correct polarity.
- AC Input/Output: Connect the AC grid and your loads to the respective AC INPUT and AC OUTPUT terminals.
- Grounding: Ensure the inverter is properly grounded.
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Parallel Connection (for 5048JMH, 5548JMH, 6248JMH models): For increased power output, up to 9 units can be connected in parallel. Refer to the parallel connection diagram and specific instructions in the full manual.
Figure 6: Parallel Connection Diagram. Illustrates how multiple inverter units can be connected to a shared battery, grid, and load to enlarge power capacity. -
Communication Interfaces: Connect RS232, BMS/RS485, or WiFi modules as needed for monitoring and advanced control. The inverter supports cloud services and mobile monitoring via WiFi/GPRS.
Figure 7: Solar System Diagram. Shows the comprehensive energy flow and communication pathways, including WiFi/GPRS for remote monitoring via phone.
5. Operation
5.1. Powering On/Off
- To power on, ensure all connections are secure, then switch the ON/OFF button to the 'ON' position.
- To power off, switch the ON/OFF button to the 'OFF' position and disconnect all power sources.
5.2. Control Panel Navigation
Use the ESC, UP, DOWN, and ENTER buttons on the control panel to navigate through menus and adjust settings. The display shows operational mode, load, input, output, and other system parameters.
- ESC: Exit current menu or cancel selection.
- UP/DOWN: Scroll through menu options or adjust values.
- ENTER: Confirm selection or enter a submenu.
5.3. System Work Modes
The inverter offers various work modes and settings to optimize energy usage. These can be configured via the 'System Setup' menu on the control panel.
- ECO Mode: Energy-saving mode.
- Output Priority: Configure whether the inverter prioritizes solar, battery, or grid power for output.
- Output Type: Select the type of output (e.g., PAL, SIG).
- Clear Generation: Reset generation data.
5.4. Battery Settings
Adjust battery parameters to match your battery type and requirements.
- Battery Type: Select the type of battery (e.g., AGM, Flooded, User-defined).
- Constant Charge Voltage: Set the constant charge voltage (e.g., 56.4Vdc for 48V systems).
- Float Charge Voltage: Set the float charge voltage (e.g., 54Vdc for 48V systems).
- BMS COM Function: Enable or disable Battery Management System communication.
5.5. Grid Settings
Configure grid-related parameters, especially for on-grid or hybrid systems.
- Input Voltage Range: Set the acceptable AC input voltage range (e.g., 90-280VAC for Normal Mode, 170-280VAC for UPS Mode).
- PV Energy Type: Select the PV energy type (e.g., India, South Africa).
- Grid Feed Enable: Enable or disable feeding excess solar power back to the grid.
- Grid Feed Current: Set the maximum current for grid feeding.
6. Maintenance
Regular maintenance ensures the longevity and optimal performance of your inverter.
- Cleaning: Periodically clean the exterior of the inverter with a dry cloth. Ensure ventilation openings are free from dust and debris.
- Inspection: Regularly inspect all cables and connections for signs of wear, damage, or loose connections.
- Firmware Updates: Check the manufacturer's website for any available firmware updates to ensure your inverter has the latest features and bug fixes.
7. Troubleshooting
The inverter's control panel includes a 'FAULT' indicator and detailed error messages to help diagnose issues. Refer to the full user manual for a comprehensive troubleshooting guide.
- No Power Output: Check AC input, battery connection, PV input, and ensure the ON/OFF switch is in the 'ON' position.
- Fault Indicator On: Note the error code displayed on the LCD and consult the manual's troubleshooting section.
- Overload: If an overload occurs, the inverter may shut down. Reduce the connected load and restart the inverter.
8. Specifications
| Category | Parameter | Value (6248JMH Model) |
|---|---|---|
| Input | Input Mode | L+N+PE |
| Rated Input Voltage | 220/230/240VAC | |
| Voltage Range | 90-280VAC±3V (Normal), 170-280VAC±3V (UPS) | |
| Frequency Range | 50Hz/60Hz (self-adaption) | |
| Output | Rated Output Power | 6200W |
| Output Voltage | 220/230/240VAC±5% | |
| Output Frequency | 50/60Hz±0.1% | |
| Waveform | Pure sine wave | |
| Switching Time (Adjustable) | For computer equipment: 10ms; for household appliances: 20ms. | |
| Peak Power | 12400VA | |
| Overload Capacity | Battery mode: 21s@105%~150% Load, 11s@150%~200% Load, 400ms@>200% Load | |
| Grid Operation | Output Voltage | 220/230/240VAC |
| Grid-Feed Voltage Range | 195-253VA | |
| Grid-Feed Frequency Range | 49-51±1Hz/59-61±1Hz | |
| Nominal Output Current | 26.9A | |
| Power Factor Range | >0.99 | |
| Maximum Conversion Efficiency (DC/AC) | 98% | |
| Battery | Rated Voltage | 48Vdc |
| Constant Charge Voltage (Adjustable) | 56.4Vdc | |
| Float Charge Voltage (Adjustable) | 54Vdc | |
| Charger | PV Charging Method | MPPT |
| Maximum PV Input Power | 6200W | |
| MPPT Input Voltage Range | 120~500Vdc | |
| Optimal Vmp Working Range | 300~400Vdc | |
| Maximum PV Input Voltage | 500Vdc | |
| Maximum PV Input Current | 18A | |
| Maximum PV Charging Current | 100A | |
| Maximum Utility Charging Current | 80A | |
| Maximum Charging Current | 120A | |
| Display | LCD Interface | Displays operational mode, load, input, output, etc. |
| Interface | Expansion Slot Communication Interface | BMS/WiFi/Dry Contact/RS232 |
| Parallel Connection Interface | UP to 9 Units | |
| Environmental Parameters | Operating Temperature | -10~50℃ |
| Storage Temperature | -15~60℃ | |
| Noise | ≤50db | |
| Physical Parameters | Dimensions (D×W×H) in mm | 495x312x146 |
| Weight (for reference) in KG | 8.5 |
9. User Tips
- Parameter Configuration: If you encounter difficulties setting the correct parameters, refer to the detailed configuration section in the complete user manual (PDF) for step-by-step guidance. The manual provides specific values and procedures for various settings like battery type, charging voltages, and grid interaction.
- Monitoring: Utilize the inverter's WiFi/GPRS communication features to monitor your system's performance remotely via a mobile application or cloud services. This allows for real-time data access and alerts.
10. Warranty and Support
The Techfine Hybrid Solar Inverter comes with a 1-year warranty. For technical support, warranty claims, or detailed inquiries, please refer to the official user manual PDF or contact your vendor.
Official User Manual (PDF): For comprehensive instructions, detailed wiring diagrams, and advanced settings, please download the full user manual from the following link: Techfine Hybrid Solar Inverter User Manual (PDF)