Sungrow SG15RT / SG17RT / SG20RT
If you use solar power every day at home or work, Sungrow’s three-phase inverters are built to keep up. They’re a solid pick for large families, growing businesses, or even small industrial setups. These inverters are made to run smoothly for years without giving you trouble.
Why is this inverter a perfect choice?
Strong Solar Input
SG15RT: Handles up to 22.5 kWp of PV input
SG17RT: Up to 25.5 kWp
SG20RT: Up to 30 kWp
High Efficiency
Max. efficiency: 98.5%
European efficiency: Up to 98.1%
It is designed to make the most of your solar panels, even in low light or changing weather.
Why is this inverter a perfect choice?
Safe & Compliant
- DC reverse polarity protection
- AC short-circuit protection
- Leakage current monitoring
- Arc fault detection (AFCI)
- PID recovery function
- Ground fault monitoring
- Built-in Type II surge protection on both DC and AC sides
Compact and Reliable
- Size: 370 × 480 × 195 mm
- Weight: 21 kg
- Cooling: Smart forced air cooling
- Protection: IP65 rated (dust and water resistant)
- Corrosion resistance: C5 rating (great for coastal or harsh environments)
- Max altitude: 4000m
- Operating temp: -25°C to +60°C
Ideal Applications
Mid-to-large residential homes
Apartment buildings or offices
Commercial rooftops
Schools, clinics, and industrial facilities
Projects using bifacial or high-voltage modules
Technical Comparison Table
Model
Max PV Input
AC Output Power
Max Efficiency
AC Current
MPPT Inputs
Protection
SG15RT
22.5 kWp
15,000 W
98.5%
25 A
2 / 2
DC/AC SPD, AFCI, PID
SG17RT
25.5 kWp
17,000 W
98.5%
98.5%
2 / 2
DC/AC SPD, AFCI, PID
SG20RT
30.0 kWp
20,000 W
98.5%
98.5%
2 / 2
DC/AC SPD, AFCI, PID
Installation & Maintenance Tips
Install in a shaded, well-ventilated area to avoid overheating.
Ensure proper wiring and compatibility with your solar panels and battery system.
Keep the inverter’s cooling system clean for optimal performance.
Monitor system performance regularly using the app for firmware updates and remote diagnostics.
Perform periodic visual inspections to check for dust buildup and any wear or tear.
Need Help Choosing the Right Solar Battery for Your System?
Looking for the perfect battery to pair with your Sungrow SG Inverter? We offer expert guidance to help you select the best lithium or lead-acid battery based on your energy needs. Contact us today for a custom recommendation and ensure seamless integration with your solar system.