Introduction
This manual provides essential information for the installation, operation, and maintenance of the EASUN POWER ISolar-SMG-III-6.2KW-Wifi Hybrid Solar Inverter. Please read this manual thoroughly before installation and operation to ensure proper and safe use of the inverter.
Figure 1: EASUN POWER ISolar-SMG-III-6.2KW-Wifi Hybrid Solar Inverter with WiFi module. Highlights key specifications like 6.2KW rated power, 48V battery voltage, 120A charge current, max 6500W PV array power, 500VDC max PV array voltage, and 96% peak efficiency.
Product Overview
The EASUN POWER ISolar-SMG-III-6.2KW-Wifi is a multi-functional inverter/charger, combining functions of inverter, solar charger, and battery charger to offer uninterruptible power support in a portable size. Its comprehensive LCD display provides user-configurable and easy-accessible button operations such as battery charging current, AC/solar charger priority, and acceptable input voltage based on different applications.
Front Panel and Indicators
Figure 2: Front panel of the inverter showing the LCD display, function keys, and LED indicators.
LED Indicators
| 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 fully charged. |
| CHG (Green, Flashing) | Battery is charging. |
| FAULT (Red, Solid On) | Fault occurs in the inverter. |
| FAULT (Red, Flashing) | Warning condition occurs in the inverter. |
Function Keys
| Function 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 |
Rear Panel Connections
Figure 3: Rear panel of the inverter detailing connection ports.
- RS485 communication port
- RS232 communication port
- Power on/off switch
- Grounding
- AC input
- AC output
- PV input
- Battery input
Features
The EASUN POWER ISolar-SMG-III-6.2KW-Wifi Hybrid Solar Inverter offers a range of advanced features for efficient and reliable power management:
- Lithium battery activation function by PV or Utility
- Compatible work with LiFePO4 battery via RS485
- Pure sine wave output
- Power factor 1.0
- PV input Voltage range: 60Vdc-500Vdc
- Built-in MPPT solar charge controller (60A/100A/120A)
- Capable to work without battery
- Detachable dust cover for harsh environments
- WiFi remote monitoring (optional)
- Support multiple output priority settings: UTL (Utility), SOL (Solar), SBU (Solar-Battery-Utility), SUB (Solar-Utility-Battery)
- EQ function to optimize battery performance and extend lifecycle
Figure 4: Summary of key inverter features.
Specifications
Detailed technical specifications for the ISolar-SMG-III-6.2KW-Wifi model:
Figure 5: Comprehensive technical specifications.
| Category | Parameter | Value |
|---|---|---|
| Model | Model Number | ISolar-SMG-III-6.2KW-Wifi |
| Rated Power | Rated Power | 6.2KVA/6.2KW |
| Input | Voltage | 230Vac |
| Selectable Voltage Range | (170Vac~280Vac)±2%；(90Vac-280Vac)±2% | |
| Frequency Range | 50Hz/60Hz (Autodetection) | |
| Output | AC Voltage Regulation (Batt. Mode) | 230VAC±5% |
| Surge Power | 12400VA | |
| Transfer Time | 10ms (for personal computers) / 20ms (for home appliances) | |
| Waveform | Pure Sine Wave | |
| Battery & AC Charger | Battery Voltage | 48VDC |
| Floating Charge Voltage | 54VDC | |
| Overcharge Protection | 63VDC | |
| Maximum Charge Current | 80A | |
| Solar Charger | Max. PV Array Power | 6500W |
| MPPT Range @ Operating Voltage | 60-500VDC | |
| Maximum PV Array Open Circuit Voltage | 500VDC | |
| Maximum Charging Current | 110A | |
| Physical | Dimension (D*W*H) | 438 x 295 x 105 mm |
| Net Weight | 9.0 kg | |
| Communication Interface | RS232/RS485/WIFI | |
| Operating Environment | Humidity | 5% to 95% Relative Humidity (Non-condensing) |
| Operating Temperature | -10°C to 55°C | |
| Storage Temperature | -15°C to 60°C |
Setup
Mounting the Unit
Figure 6: Mounting instructions and dimensions.
- Do not mount the inverter on flammable construction materials.
- Mount on a solid surface.
- Install this inverter at eye level in order to allow the LCD display to be read at all times.
- The ambient temperature should be between 0°C and 55°C to ensure optimal operation.
- The recommended installation position is to be adhered to the wall vertically.
- Be sure to keep other objects and surfaces as shown in the right diagram to guarantee sufficient heat dissipation and to have enough space for removing wires.
WARNING: Suitable for mounting on concrete or other non-combustible surface only.
PV Connection
Figure 7: PV connection diagram and module selection parameters.
When selecting proper PV modules, please be sure to consider the following parameters:
- Open circuit Voltage (Voc) of PV modules should not exceed max. PV array open circuit voltage of inverter (500VDC).
- Open circuit Voltage (Voc) of PV modules should be higher than min. battery voltage (48VDC).
Inverter Model PV Parameters
| Parameter | Value | Notes |
|---|---|---|
| Maximum PV output power | 6500W | |
| Maximum PV open circuit voltage | 500VDC | |
| Maximum charge current | 120A | |
| Maximum Power (Pmax) | 250W | Max. PV module numbers in series: 13 x 36V ≈ 60~500VDC |
| Max. Power Voltage Vmpp(V) | 36V | PV module numbers in parallel: 13 x 8.3 < 120A |
| Max. Power Current Impp(A) | 8.3A | Total PV module numbers: 2 x 13 = 26 |
| Open Circuit Voltage Voc(V) | 40V | |
| Short Circuit Current Isc(A) | 8.9A |
Battery Connection
Figure 8: Diagram for connecting batteries in a 48VDC system.
The 6.2KW model supports a 48VDC battery system. Connect four 12V batteries in series to achieve the required 48VDC. Ensure correct polarity when connecting batteries.
Operating
System Diagram
Figure 9: Operational diagrams for the inverter, illustrating connections for solar power, generator, utility grid, battery packs, and home appliances, both with and without battery connection.
LCD Display Information
Figure 10: Detailed view of the LCD display and its various icons and their meanings.
| Icon | Function Description |
|---|---|
| AC | Indicates the AC input. |
| PV | Indicates the PV input. |
| INPUTBATTEMP | Indicates input voltage, input frequency, PV voltage, battery voltage and charger current. |
| Configuration Program | Indicates the setting programs. |
| Warning/Fault Codes | Indicates the warning and fault codes. Warning: flashing with warning code. Fault: lighting with fault code. |
| OUTPUTBATTLOAD | Indicates output voltage, output frequency, load percent, load in VA, load in Watt and discharging current. |
| Battery Information | Indicates battery level by 0-24%, 25-49%, 50-74% and 75-100% in battery mode and charging status in line mode. |
| Mode Operation: Mains | Indicates unit connects to the mains. |
| Mode Operation: PV Panel | Indicates unit connects to the PV panel. |
| Mode Operation: BYPASS | Indicates load is supplied by utility power. |
| Mode Operation: Utility Charger | Indicates the utility charger circuit is working. |
| Mode Operation: DC/AC Inverter | Indicates the DC/AC inverter circuit is working. |
Maintenance
Regular maintenance ensures the longevity and optimal performance of your inverter. Please follow these guidelines:
- Keep the inverter clean and free from dust and debris. Ensure ventilation openings are not blocked.
- Periodically check all wiring connections for tightness and signs of corrosion.
- Inspect the battery terminals for corrosion and clean if necessary.
- Monitor the LCD display for any warning or fault codes and address them promptly.
- Ensure the ambient temperature around the inverter remains within the specified operating range (-10°C to 55°C).
- If the detachable dust cover is installed, ensure it is properly secured and clean.
Troubleshooting
If you encounter issues with your inverter, refer to the LED indicators and LCD display for fault codes or warning messages. Common issues can often be resolved by checking connections, ensuring proper ventilation, or verifying battery status. For persistent problems, consult a qualified technician.
- No Power Output: Check AC input, battery connections, and PV input. Verify the power on/off switch is in the 'ON' position.
- Warning/Fault Codes: Refer to the LCD display section for the meaning of specific codes and take appropriate action.
- Battery Not Charging: Ensure PV panels are receiving sufficient sunlight and are correctly connected. Check battery voltage and charger settings.
- Overload Warning: Reduce the connected load to prevent damage to the inverter.
Warranty & Support
For warranty information and technical support, please contact your authorized dealer or the manufacturer directly. Keep your purchase receipt and product serial number handy for any inquiries.
