20kW Pure Sine Wave Off Grid Solar Inverter

$9,176.15

| 2 review(s) | Add your review

3 phase power inverter is a pure sine wave off grid inverter with cheap price, 20kW output power rating, no battery storage system, transforms 120V DC to 480V AC (input and output voltage are customizable), high efficiency and stable performance. Off grid pv inverter with LCD display. The output frequency of this 20kw off grid solar inverter can be chosen 50Hz or 60Hz.

Delivery date: 6-12 days

SKU: ATO-OGI-20kW

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AC Output Voltage (3-phase) *

Output Frequency *

Add AC Input

Yes [+$124.36]

Add RS485 Interface

Yes [+$135.18]

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Overview
Specs
Manual
FAQ
Reviews

Overview

Cheap DC to AC off grid without battery power inverter for solar power system, three phase 4 wire connection, pure sine wave output, input & output fully isolation. Low frequency inverter is 20000 watt high power, digital LCD display data info, powerful protection function. With a power capacity of 20 kW, this solar inverter is capable of handling significant electrical loads, making it suitable for larger homes, small businesses, or remote facilities with substantial power needs.

Features:

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 a 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.

Details:

Black Oxide Heat Sink

Used thickened aluminum heat sink improve radiation rate cooling surface is stable and not easy to oxidize, black coating does not interfere with electrical conductivity. This results in better cooling and a longer lifespan for the 20kW off grid inverter. The black finish can improve the overall appearance of the inverter and make it blend more seamlessly with other components.

Powerful Cooling System

A powerful cooling system enhances the safety, durability. It helps maintain optimal operating temperatures, ensuring the grid off inverter runs efficiently and effectively. This cooling system prevents overheating, which can lead to equipment damage and failure. Additionally, a well-cooled inverter can handle higher loads without risking performance degradation.

Anti-dust Protection

Reasonable cabinet design with dust-proof net to reduce dust, prevent accidental touch and improve safety performance. Anti-dust features enhance the reliability of the power inverter, minimizing downtime and maintenance needs. This protection maintains efficiency by keeping internal components clean and functioning optimally, ensuring stable power conversion.

Applications:

Home Use

Remote Location

Off Grid Solar System

CNC Machine

Specs

Model		ATO-OGI-30kW
Size (DWH)		550550760mm
Weight		210kg
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/ 288V/ 300V/ 480V DC (can be customized)
	Rated current	45A @120V DC
AC Output	Rated output power	20kW
	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	25A @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!

Manual

Off Grid Solar Inverter Catalog

FAQ

What is the difference between on grid and off-grid inverter?

An on-grid inverter, also known as a grid-tied inverter, is designed to work in conjunction with the electrical grid. It converts DC (direct current) power generated by sources like solar panels into AC (alternating current) power, which can be fed back into the electrical grid or used to power appliances. These inverters synchronize the frequency and phase of the AC power with the grid's power to ensure smooth integration. On-grid inverters do not require a battery backup and rely on the grid for stable power. They also allow excess energy to be sold back to the grid, offering potential financial benefits to the user.

An off-grid inverter, also known as a stand-alone inverter, operates independently from the electrical grid. It converts DC power from renewable sources or batteries into AC power to supply power directly to appliances or a local electrical network. Off-grid inverters are typically used in remote areas where grid access is limited or unavailable. They often work in conjunction with battery storage systems to provide continuous power, even when renewable energy sources are not producing power (e.g., at night for solar systems). Unlike on-grid inverters, off-grid systems require careful design and management to ensure reliable power and proper battery maintenance.

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Existing reviews

A dependable and cost-effective choice for large off-grid systems.

This 20kW off-grid inverter delivers strong and stable performance for my solar setup. It runs big loads without troubles, and the pure sine wave output keeps everything running smoothly. The LCD is handy, though I wish it had a slightly faster response time.

From: Alva Huggins | Date: 10/11/2025 12:34 AM

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Super quiet!

Just before I purchase this inverter I had a loud one with less power that I had to shut down at night. I love my new inverter! I never hear any noise. It is super quiet.

From: William Ben | Date: 4/29/2022 12:47 AM