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3.5KW Off-grid Solar Inverter with MPPT Controller - China Suppliers & Factory for Pure Sine Wave Systems
Technical Parameters
| Technical Parameters | |
| 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
1
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.
2
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 500Vdc; MPPT range & working voltage 120–450Vdc; Max 3500W input; Max 3500W output; Fit for 24V Lead-Acid (Seal, AGM, Gel, Flooded) and Lithium battery.
3
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.
4
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.
5
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 800W air conditioning together require 1300W — so you need an inverter rated above 1300W. (Note: calculation methods differ for variable frequency vs. fixed frequency appliances.)
- Check your battery voltage. The DC voltage rating on the inverter tells you which 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 adequate ventilation and no fire hazards.
- Need help? If you are unsure, we provide a one-stop service to guide you through the selection process.
❓ Frequently Asked Questions (FAQ)
Q What is the rated power of the DFXN24OF3.5K inverter?
The DFXN24OF3.5K has a rated power of 3500W and a surge power of 7KVA, making it suitable for powering a wide range of household appliances, power tools, and small commercial equipment.
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 it features an adaptive lithium battery charging strategy for optimal performance.
Q What are the available charging modes?
The inverter offers 4 charging modes: Only Solar, Mains Priority, Solar Priority, and Mains & Solar off-grid charging. It also supports 2 output modes: mains bypass and inverter output, giving you full flexibility in energy management.
Q What is the maximum solar panel input for this inverter?
The maximum photovoltaic input power is 3500W, with a maximum PV open circuit voltage of 500VDC and an MPPT working voltage range of 120–450VDC. The maximum solar charging current is 100A.
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 polarity protection, ensuring safe and reliable operation in various environments.
Q What are the typical application scenarios for this off-grid solar inverter?
This inverter is ideal for home emergency backup power, remote areas with limited grid access, rural homes and farms, disaster relief, small commercial and industrial facilities, off-grid tourist accommodations, high electricity cost regions, and remote monitoring or control stations.