40kW Pure Sine Wave Off Grid Solar Inverter

40kW off grid inverter for sales, features high-quality pure sine wave AC output, 3 phase 4 wire connection, no battery design, wide DC input voltage range, LCD display data, converts DC power to AC power in solar power system.
Delivery date: 6-12 days

Low frequency pure sine wave inverter without battery for solar power system, with 40kW output power, converts 240V DC to 480V AC. This off grid inverter is widely used for solar energy, wind turbine, and other renewable energy systems, also suitable for use in the mountains, pastoral, borders, islands, vehicles, ships, and other areas without electricity which can provide and guarantee effective power supply.


  • 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-40kW
Size (D*W*H) 750*750*1480mm
Weight 350kg
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 240V/ 300V/ 360V/ 480V DC (can be customized)
Rated current 115A @360V DC
AC Output Rated output power 40kW
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 61A @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: Differences between grid-tie inverter and off-grid inverter?

As the conversion device of the photovoltaic power station, photovoltaic inverters can be divided into PV grid-connected inverters and PV off-grid inverters according to their purposes. So how can we distinguish between these two types of photovoltaic inverters?

  1. The purpose of the photovoltaic power generation system can be divided into independent (off-grid type) and grid-connected types. The inverter suitable for an off-grid power generation system is off-grid inverter, and the inverter suitable for a grid-connected power generation system is the grid-tie inverter.

  2. Second, according to the waveform modulation mode of the inverter itself can be divided into square wave inverter, ladder wave inverter, sinusoidal wave inverter and combined-type three-phase inverter, which is the inverter manufacturers produced by the inverter itself to divide the waveform.

  3. Third, according to the grid-connected system of photovoltaic power generation, it can be divided into transformer inverter and transformer-free inverter. This is mainly a classification of photovoltaic inverters from different requirements of grid-connected systems. emphasize that: Users should purchase the corresponding photovoltaic solar inverter according to their own needs.


Products specifications
Attribute name Attribute value

PDFOff Grid Solar Inverter Catalog

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