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3.5KW Off-Grid Solar Inverter Factory in China | Pure Sine Wave & MPPT Charge Controller | Trusted Suppliers
⚙ Technical Parameters
| Model & Rated Power | |
| Model | DFXN24OF3.5K |
| Rated Power | 3500W |
| Input Parameters | |
| Voltage | 230VAC |
| Optional Voltage Range | 170~280VAC (Personal Computer) |
| 90~280VAC (Household Appliances) | |
| Frequency Range | 50Hz/60Hz (Adaptive) |
| Output Parameters | |
| AC Stabilized Voltage | 230VAC ±5% |
| Surge Power | 7KVA |
| Peak Efficiency | 93.5% |
| Switching Time | 10ms (For PC), 20ms (For Home Appliances) |
| Wave Form | Pure Sine Wave |
| Battery Parameters | |
| Battery Type | Lead Acid + Lithium Battery |
| Battery Voltage Range | 21~33V |
| Charging Curve | Three-Stage |
| Lithium Battery Charging Strategy | Adaptive To Lithium Battery |
| Photovoltaic Charging & AC Charging | |
| Maximum Photovoltaic Power | 3500W |
| Maximum PV Open Circuit Voltage | 500VDC |
| MPPT Range & Working Voltage | 120~450VDC |
| Maximum Solar Charging Current | 100A |
| Maximum AC Charging Current | 60A |
| General Parameters | |
| Product Size (mm) | 320 * 490 * 110 |
| Package Size (mm) | 346 * 536 * 178 |
| Net Weight (kg) | 8.44 |
| Communication Interface | RS232 / RS485 / CAN / Dry Contact |
| Relative Humidity | 5% ~ 95% |
| Operating Temperature | -10℃ to 50℃ |
| Storage Temperature | -15℃ to 60℃ |
🌎 Applications
This product is suitable for home emergency, remote areas with insufficient power supply, rural areas and farms, disaster relief and emergency, small commercial and industrial facilities, off-grid tourist facilities, areas with high power costs, remote monitoring and control stations, etc.
⭐ Product Advantages
3.5KW / 5.5KW / 10KW Off-grid Solar Inverter
Solar Off-grid Inverter is a new all-in-one off-grid solar charge inverter, which integrates solar energy storage & means charging energy storage and AC sine wave output.
- Advanced SPWM technology output of pure sine wave.
- Optimized MPPT technology with an efficiency of 93.5%.
- Available in 4 charging modes.
- Designed with an LCD screen and 3 LED indicators for dynamic display.
Important Specification
Employed advanced SPWM technology and outputs pure sine wave to convert 24V DC to 90V-280V AC, 50Hz/60Hz frequency (Auto detection). Max PV open circuit voltage 500 Vdc; MPPT range & working voltage 120-450Vdc; Max 3500W input; Max 3500W output; Fit for 24V Lead-Acid (Seal, AGM, Gel, Flooded) and Lithium battery.
Safe and Reliable
The power inverter has 360° all-round protection with a number of protection functions, including short circuit protection, over voltage and under voltage protection, overload protection, reverse protection, etc. Ideal for AC loads such as household appliances, power tools, industrial equipment, and electronic audio and video equipment.
Multiple Working Modes
4 charging modes — Only Solar, Mains Priority, Solar Priority and Mains & Solar off-grid charging; 2 output modes — mains bypass and inverter output. The inverter is designed with an LCD screen and 3 LED indicators for dynamic display of system data and operating status.
What Size Inverter Should I Buy?
- Size the right power output. Inverters are rated by wattage, telling you how many watts they can run at one time. For example, a 500W fridge and an 800W air conditioner total 1300W — you would need an inverter rated above 1300W to meet your needs. (Note: calculation methods differ for variable frequency and fixed frequency loads.)
- Check your battery voltage. The DC voltage rating on the inverter tells you what battery bank it is compatible with. For example, a 12V battery bank requires an inverter compatible with 12V DC input.
- Size your installation space. Ensure the inverter fits in your intended space with enough room for proper ventilation and no fire hazards.
- Not sure where to start? We provide one-stop service to help you choose the right solution.
❓ Frequently Asked Questions
Q
What is the rated power of the DFXN24OF3.5K solar inverter?
The DFXN24OF3.5K has a rated power of 3500W with a surge power capacity of 7KVA, making it suitable for running a wide range of household appliances and small commercial equipment simultaneously.
Q
What types of batteries are compatible with this inverter?
This inverter supports both Lead-Acid batteries (Sealed, AGM, Gel, Flooded) and Lithium batteries. The battery voltage range is 21~33V, and the charging strategy automatically adapts to the connected lithium battery type.
Q
What are the available charging modes?
The inverter offers 4 charging modes: Only Solar, Mains Priority, Solar Priority, and Mains & Solar combined off-grid charging. It also supports 2 output modes — mains bypass and inverter output — for flexible energy management.
Q
What protection features does this inverter include?
The inverter provides 360° all-round protection, including short circuit protection, over-voltage and under-voltage protection, overload protection, and reverse protection, ensuring safe and reliable operation for all connected loads.
Q
What is the maximum solar input and MPPT voltage range?
The maximum photovoltaic input power is 3500W, with a maximum PV open circuit voltage of 500VDC. The MPPT working voltage range is 120~450VDC, and the maximum solar charging current is 100A.
Q
What scenarios is this off-grid solar inverter best suited for?
This inverter is ideal for home emergency backup power, remote areas with insufficient grid supply, rural farms, disaster relief operations, small commercial and industrial facilities, off-grid tourist accommodations, high electricity cost areas, and remote monitoring or control stations.