1. Introduction
The EASUN 6.2KW Hybrid Solar Inverter is an advanced power solution designed to efficiently manage solar power, utility power, and battery power for your home or office. Featuring a pure sine wave output, Maximum Power Point Tracking (MPPT) solar charger, and a robust design, this inverter ensures stable and reliable power supply. It can operate with or without a battery, offering flexibility for various energy setups.
Key Features:
- Pure sine wave output for sensitive electronics.
- Configurable input voltage range for home appliances and personal computers.
- Configurable battery charging current based on applications.
- Configurable AC/Solar Charger priority.
- Compatible with mains voltage or generator power.
- Auto restart while AC is recovering.
- Overload, over temperature, and short circuit protection.
- Smart battery charger design for optimized battery performance.
- Cold start function.
- WIFI included for monitoring and control (requires setting option 05 to 'USE').
2. Safety Information
Please read all instructions and cautionary markings on the unit and in this manual before installation and operation. Failure to follow these instructions may result in electric shock, fire, or severe injury.
- Installation must be performed by qualified personnel.
- Ensure all wiring is correctly polarized and securely connected.
- Do not connect the battery after the utility is turned on.
- Do not mount the inverter on flammable construction materials.
- Mount on a solid, non-combustible surface only.
- Ensure proper ventilation around the inverter to dissipate heat.
- Keep children away from the inverter.
- Do not attempt to disassemble or repair the unit yourself. Contact qualified service personnel.
3. Product Overview
The EASUN 6.2KW Hybrid Solar Inverter integrates multiple functions to provide a comprehensive power solution.
Figure 3.1: Front view of the EASUN 6.2KW Hybrid Solar Inverter highlighting Max PV Array Power (6500W), Max PV Array Voltage (500VDC), and Max Charge Current (120A).
Figure 3.2: Various views of the inverter showing its physical layout and connection points.
3.1. LCD Display and Function Keys
The inverter features an intuitive LCD display and function keys for easy configuration and monitoring.
Figure 3.3: LCD Display, LED Indicators, and Function Keys.
LED Indicator Messages:
| LED Indicator | Messages |
|---|---|
| AC / INV (Green Solid On) | Output is powered by utility in Line mode. |
| AC / INV (Green Flashing) | Output is powered by battery or PV in battery mode. |
| CHG (Green Solid On) | Battery is charging. |
| FAULT (Red Solid On) | Fault occurs in the inverter. |
| FAULT (Red Flashing) | Warning condition occurs in the inverter. |
Function Keys:
| Key | Description |
|---|---|
| ESC | To exit setting mode |
| UP | To go to previous selection |
| DOWN | To go to next selection |
| ENTER | To confirm the selection in setting mode or enter setting mode |
4. Specifications
| Attribute | Value |
|---|---|
| Model Number | SMH-III-6.2KW |
| Brand Name | EASUN POWER |
| EANCode | 6901111020027 |
| Rated Power | 6200VA/6200W |
| Input Voltage | 230Vac |
| Selectable Voltage Range | 170-280Vac (for PCs), 90-280Vac (for home appliances) |
| Output Frequency | 50/60Hz (Autodetection) |
| Output AC Voltage Regulation (Battery Mode) | 230Vac±5% |
| Surge Power | 14000VA |
| Transfer Time | 10ms (PC) / 20ms (home appliances) |
| Waveform | Pure Sine Wave |
| Battery Voltage | 48VDC |
| Floating Charge Voltage | 54VDC |
| Overcharge Protection | 61VDC |
| Solar Charger Type | MPPT |
| Max. PV Array Power | 6500W |
| MPPT Voltage Range | 60VDC~500VDC |
| Max. PV Array Open Circuit Voltage | 500VDC |
| Solar Charge Current | 120A |
| Maximum Efficiency | 98% |
| Dimension (D*W*H) | 423*310*120mm |
| Net Weight | 11KG |
| Communication Interface | RS232/RS485 (Standard), GPRS/WIFI (Optional) |
| Operating Humidity | 5% to 95% Relative Humidity (Non-condensing) |
| Operating Temperature | 5°C to 55°C |
| Storage Temperature | 5°C to 60°C |
| Output Type | SINGLE |
| Is Smart Device | Yes |
| Certification | CE |
| Grid Type | Off Grid Inverter |
5. Setup and Installation
Proper installation is crucial for the safe and efficient operation of your hybrid solar inverter. Please follow these steps carefully.
5.1. Mounting the Unit
Consider the following points before selecting where to install:
- Do not mount the inverter on flammable construction materials.
- Mount on a solid surface.
- Install this inverter at eye level to allow the LCD display to be read at all times.
- For proper air circulation to dissipate heat, allow a clearance of approximately 20 cm to the side and approximately 50 cm above and below the unit.
- The recommended installation position is to be adhered to the wall vertically.
- Be sure to keep other objects and surfaces as shown in the diagram to guarantee sufficient heat dissipation and to have enough space for removing wires.
Figure 5.1: Recommended mounting clearances for heat dissipation.
WARNING: SUITABLE FOR MOUNTING ON CONCRETE OR OTHER NON-COMBUSTIBLE SURFACE ONLY.
5.2. Wiring Connections
Refer to the installation video and diagrams for detailed wiring instructions. Always ensure power is disconnected before making any connections.
Video 5.1: Step-by-step guide for inverter installation and wiring connections.
5.2.1. Battery Connection
The 6.2KW model supports a 48VDC battery system. Connect the battery to the positive and negative terminals of the inverter. Ensure correct polarity (red for positive, black for negative).
Figure 5.2: Battery Connection Diagram. The 6.2KW model requires a 48VDC system.
5.2.2. Utility Grid Connection
Connect the utility grid input to the designated AC IN terminals on the inverter. Ensure proper wiring for Live (L), Neutral (N), and Ground.
5.2.3. Ground Connection
Connect the ground wire to the inverter's ground terminal for safety.
5.2.4. Output Connections
Connect your loads to the Main Output and Second Output terminals. The inverter provides a pure sine wave output suitable for various appliances.
5.2.5. PV Connection
Connect your solar panels to the PV IN terminals. Observe the maximum PV array power, open circuit voltage, and MPPT voltage range specified in the specifications table.
Figure 5.3: PV Connection Diagram and module parameters.
When selecting PV modules, ensure the Open Circuit Voltage (Voc) of PV modules does not exceed the maximum PV array open circuit voltage of the inverter (500VDC). Also, the Voc of PV modules should be higher than the minimum battery voltage.
6. Operating Instructions
Once all connections are secure, you can begin operating your inverter.
6.1. System Operation Modes
The inverter can operate in various modes depending on the availability of solar power, AC power, and battery connection.
Figure 6.1: System Operation Diagrams for various power scenarios.
Operation without Battery Connected:
- Solar Power Available: Solar power directly supplies the load. If solar power is insufficient, the utility grid supplements.
- AC Power Available: Utility grid supplies the load. Solar power is used for charging if a battery is connected (though this section describes 'without battery').
Operation with Battery Connected:
- Solar Power and AC Power Available: Solar power prioritizes charging the battery and then supplies the load. Utility grid supplements if needed.
- Solar Power and AC Power Not Available: Battery supplies the load.
6.2. WIFI Monitoring and Control
The inverter includes a WIFI module for remote monitoring and control via the SmartESS App (available for iOS and Android). To enable WIFI, ensure option 05 in the inverter's settings is set to "USE".
Figure 6.2: Monitoring and Control via SmartESS App with optional WIFI module.
6.3. Pure Sine Wave Output
The inverter provides a pure sine wave output, which is identical to the voltage waveform of the utility grid. This ensures high-quality AC power with higher efficiency, stable output, and broad compatibility with various electronic devices.
Figure 6.3: Pure Sine Wave Output and examples of compatible loads.
7. Maintenance
Regular maintenance helps ensure the longevity and optimal performance of your inverter.
- Cleaning: Keep the inverter's exterior clean and free from dust. Ensure ventilation openings are not blocked.
- Connection Checks: Periodically check all electrical connections (battery, PV, utility, load) for tightness and signs of corrosion.
- Environmental Conditions: Ensure the operating environment remains within specified temperature and humidity ranges.
- Battery Health: If using a battery, monitor its health and ensure it is properly charged and maintained according to the battery manufacturer's guidelines.
8. Troubleshooting
This section provides solutions to common issues you might encounter.
- Inverter Not Turning On: Check battery connections, power switch, and utility input. Ensure battery voltage is within the acceptable range.
- No Output Power: Verify input sources (solar, utility) are active. Check for overload or short circuit conditions. Refer to the LED indicators for fault warnings.
- WIFI Connection Issues: Ensure the WIFI module is correctly installed and option 05 is set to 'USE' in the inverter's settings. Check your network connection and app settings.
- Overload/Over Temperature: Reduce the load connected to the inverter. Ensure adequate ventilation and clear any obstructions around the unit.
For persistent issues, contact customer support or a qualified technician.
9. User Tips
- The SMH III 6.2KW model can operate without a battery, providing flexibility for direct solar-to-load applications or utility backup.
- The WIFI antenna is included with the inverter for remote monitoring. Remember to enable it via the LCD settings (option 05).
- For the 6.2KW model, a 48VDC battery pack is required if you plan to use battery storage.
- When connecting PV modules, always ensure the open circuit voltage (Voc) of your solar array does not exceed 500VDC to prevent damage to the inverter.
10. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the documentation provided with your purchase or contact EASUN POWER customer service directly. Keep your purchase receipt as proof of purchase.
