15kW Pure Sine Wave Off Grid Solar Inverter

Best DC to AC off grid solar power inverter, without battery storage system, three phase 4 wire connection, pure sine wave output, input & output fully isolation. Low frequency inverter is 15000W high power, digital LCD display data info, powerful protection function.
Delivery date: 6-12 days

15kW sine pure wave power inverter is a 3 phase off grid inverter with no battery for the solar system, converts the DC power to AC power, it is useful for areas without electricity, vehicles, ships, solar energy and other renewable energy systems, etc.


  • Two kinds of start modes: Step-down voltage start and variable frequency start. Customers can set start mode according to the type of their load.
  • The output voltage can be set between -40 % to +20 % of the rated voltage. And the output voltage with an accuracy ±1%.
  • Pure sine wave output. With a good dynamic response of less than 50MS, the waveform distortion rate is smaller, with higher conversion efficiency and stable output voltage.
  • Adopts black pure aluminum radiator, which confirms the best radiating performance.
  • Powerful data display function. LCD can display the DC input voltage, output frequency, phase voltage, phase current, AC bypass input voltage, power consumption (kWH), time and date, temperature, and fault code display.
  • Wide input voltage can work without battery and solar charge controller, save more cost, and with MPPT wide voltage input function, maximum use of solar power.

Parameter List

Model ATO-OGI-15kW
Size (D*W*H) 550*550*760mm
Weight 180kg
Certificate CE, UL, SA, SAA, VDE
Warranty period 12 months
AC Input Rated voltage AC input voltage is the same value as the AC output
DC Input Rated voltage 96V/ 108V/ 120V/ 192V DC (can be customized)
Rated current 78A @192V DC
AC Output Rated output power 15kW
Output waveform Pure sine wave
Rated voltage 208V/ 220V/ 230V/ 240V/ 380V/ 400V/ 415V/ 460V/ 480V (optional)
Phase 3 phase 4 wire+PE wire (single phase/ split phase can be customized, please contact us by email)
Rated phase current 23A @380V AC
Frequency 50Hz or 60Hz
Power factor >0.99
Overload ability 150%, 5 seconds
Efficiency >93%
Waveform distortion rate THD<3%
Dynamic response (0 to 100% load) 5%, ≤50ms
Display LCD
Running mode Working continuously
Electrical insulation properties 2000Vac, 1min
Communication interface RS485 (optional), can remote control the start/stop of the inverter and convey the data as below:
1. Input DC current
2. Input DC voltage
3. Output AC current 
4. Output AC voltage
5. Power consumption (kWH)
6. Some fault information
Battery charging function Can be customized, please contact us
Protection Function Protection Input reverse polarity, under voltage, over-voltage, output over-current, short circuit, overheating
Cooling method Fan-cooled
Short-circuit protection No automatic recovery, need to restart the machine
Working Environment Noise (1 meter) ≤50dB
Degree of protection IP20 (indoor)
Working altitude ≤2000m
Working temperature -25~+55℃
Relative humidity 0~90%, non-condensing
Note The above parameters are for reference only, and can be customized according to the customer's requirement!

Tips: Off-grid solar inverter display overload or unable to be started, how to solve?

Fault analysis: The load power is greater than the inverter or battery power.

Possible reason:

  1. Inverter overload: If the inverter overload exceeds the time scope, the load power exceeds the maximum value, please adjust the load.
  2. Battery overload: The discharge current is generally 0.2C-0.3C, and the maximum value does not exceed 0.5C. As to one 12V200AH lead-acid battery, the output maximum power does not exceed 2400W. As to the batteries of different manufacturers and different models, the specific values are also different.
  3. The load is a load such as an elevator that cannot be directly connected to the output terminal of the inverter. Because when the elevator is descending, the motor reverses, and a back electromotive force is generated. In entering the inverter, the inverter is damaged. If an off-grid system must be used, it is recommended to add a frequency converter between the inverter and the elevator motor.
  4. The inductive load start-up power is too high.

Solution: The rated power of the load must be lower than the power of the inverter power, and the peak power of the load cannot be greater than 1.5 times the rated power of the inverter.

Read more related blog: PV Off-Grid Solar System Troubleshooting

Products specifications
Attribute name Attribute value

PDFOff Grid Solar Inverter Catalog

Existing reviews
The best solar inverter!
To be honnest, I bought several pure sine wave off grid solar inverters here. They are super great so that I bought them again and again because my work really needs so many inverters. I highly recommend them!
Bas White | 4/20/2022 2:45 AM
Was this review helpful? Yes No (0/0)
Write your own review
  • Only registered users can write reviews