1. Introduction
This manual provides essential information for the safe and efficient installation, operation, and maintenance of your Sungrow SG10-20RT Series Three-Phase On-Grid Solar Inverter. Please read this manual thoroughly before installation and keep it for future reference.
Figure 1: Sungrow SG10-20RT Series Solar Inverter
2. Key Features
Figure 2: Sungrow Inverter Key Features
- High Yield: Features lower startup voltage, wider MPPT voltage range, compatibility with bifacial modules, and a built-in PID recovery function.
- Safe and Durable: Equipped with a quick arc fault circuit interrupter, built-in Type II DC & AC SPD (Surge Protective Device), and a high anti-corrosion rating of C5.
- Easy and User Friendly: Compact 18 kg design, unique push-in connectors for simplified installation, and fast & easy commissioning via a dedicated mobile application or LCD.
- Smart Management: Offers smart IV curve scanning, 24/7 live monitoring, and remote firmware updates.
3. Specifications
The following table details the electrical and general specifications for the Sungrow SG10-20RT series inverters.
| Feature | SG10RT-20 | SG12RT-20 | SG15RT-20 | SG17RT-20 |
|---|---|---|---|---|
| Input DC | ||||
| Max. input voltage | 1100V | |||
| Start-up voltage | 180V | |||
| Rated input voltage | 600V | |||
| MPPT voltage range | 160-1000V | |||
| Max. current for input connector | 25A | 25A | 37.5A | 50A |
| Max. short circuit current | 32A | 32A | 48A | 64A |
| Output AC | ||||
| Rated output power | 10000W | 12000W | 15000W | 17000W |
| Max. apparent output power | 11000VA | 13200VA | 16500VA | 18700VA |
| Max. AC output current | 16.7A | 20A | 25A | 28.3A |
| Rated grid voltage | 3/N/PE, 220/400V | |||
| AC voltage range | 270-480V | |||
| Rated grid frequency | 50/60Hz | |||
| THDi | <3% (of nominal power) | |||
| DC current injection | <0.5% (of nominal current) | |||
| Power Factor | >99% (0.8 leading - 0.8 lagging) | |||
| Efficiency | ||||
| Max. efficiency | 98.5% | 98.5% | 98.6% | 98.6% |
| Max. European efficiency | 98.1% | 98.1% | 98.1% | 98.2% |
| Protection | ||||
| PV reverse connection protection | Yes | |||
| AC short circuit protection | Yes | |||
| Leakage current protection | Yes | |||
| Grid monitoring | Yes | |||
| PV string current monitoring | Yes | |||
| DC switch | Yes | |||
| Overvoltage protection | DC TypeII/AC Type II | |||
| General Data | ||||
| Dimensions (W*H*D) | 370*480*195 mm | |||
| Weight | 17kg | |||
| Topology | Transformerless | |||
| Self consumption | <1W (night) | |||
| Operating ambient temperature range | -25 ~ +60°C | |||
| Relative humidity | 0-100% | |||
| Ingress protection | IP65 | |||
| Max. operation altitude | 4000m | |||
| Grid connection standard | VDE-AR-N 4105, VDE V 0124, VDE V 0126-1-1, UTE C15-712-1, NRS 097-1-2, G98, G99, EN 50549-1/-2, UNE 206006, UNE 206007-1, IEC 61727 | |||
| Safety/EMC standard | IEC 62109-1/-2, IEC 62116, EN 61000-6-1/-2/-3/-4 | |||
| Communication | WIFI/ Ethernet (optional) | |||
| DC connection | MC4 (Max. 6 mm²) | |||
| AC connection | Plug and play connector (max. 6 mm²) | |||
| Display | LED | |||
| Compliance | Active & reactive power control, power ramp rate control | |||
Additional specifications:
- Brand Name: Sungrow (also listed as LanYuXuan, but Sungrow is primary)
- DIY Supplies: Electrical
- Origin: Mainland China, Anhui, China
- Certification: CE
- Input Voltage: 1100V
- Output Voltage: 270V~480V
- Output Frequency: 50Hz/60Hz
- Output Type: Triple
- Type: DC/AC Inverters
- Product name: Sungrow Solar Inverter
- Application: Residential/Commercial/Industrial System
- Color: Silver
4. Setup and Installation
Proper installation is crucial for the safe and efficient operation of your Sungrow inverter. It is recommended that installation be performed by a qualified professional.
4.1 Mounting Location
- Ensure the mounting surface is sturdy enough to support the inverter's weight (17kg).
- Choose a location that allows for adequate ventilation and is within the specified operating ambient temperature range (-25 ~ +60°C).
- The inverter has an IP65 ingress protection rating, making it suitable for outdoor installation.
- Avoid direct sunlight if possible to prevent overheating, or ensure proper shading.
4.2 Electrical Connections
The inverter features easy plug terminal design and push-in connectors for time-saving installation.
Figure 3: Inverter Connection Points
- DC Connection: Use MC4 connectors for PV string input. Maximum cable size is 6 mm². Ensure correct polarity.
- AC Connection: Use the provided plug-and-play connector for AC output. Maximum cable size is 6 mm².
- Grounding: Connect the shell to ground securely.
- DC Switch: The inverter includes an integrated DC switch for safety.
- WiFi Monitoring: Connect the optional WiFi/GPRS module for remote monitoring.
4.3 Commissioning
Commissioning can be done quickly and easily via a mobile application or the inverter's LED display.
Video 1: Sungrow Solar Inverter Installation and Feature Overview
The video demonstrates the ease of installation with push-in connectors and fast commissioning via app or LCD.
5. Operation
Once installed and commissioned, the Sungrow inverter operates automatically to convert DC power from solar panels into AC power for your grid. The LED display provides basic status information.
5.1 Monitoring
For detailed performance monitoring, connect the optional WiFi or GPRS communication module. This allows for:
- 24/7 Live monitoring of your solar power system.
- Smart IV curve scanning for performance optimization.
- Remote firmware updates to ensure your inverter is always running with the latest features and improvements.
- Access to power station information and control of output via a mobile application (Solarmon app).
Figure 4: Sungrow Inverter Monitoring Interface and Solarmon Device
6. Maintenance
Regular maintenance helps ensure the longevity and optimal performance of your inverter.
- Cleaning: Periodically clean the exterior of the inverter to remove dust and debris. Use a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Ventilation: Ensure that the ventilation openings are clear and not obstructed. Proper airflow is essential for cooling.
- Connections: Annually inspect all electrical connections (DC and AC) for tightness and signs of corrosion.
- Performance Monitoring: Regularly check the monitoring system for any alerts or deviations in performance.
- Firmware Updates: Keep the inverter firmware updated as recommended by Sungrow to benefit from the latest features and bug fixes.
The inverter's high anti-corrosion rating (C5) contributes to its durability in various environmental conditions.
7. Troubleshooting
This section provides basic troubleshooting steps for common issues. For more complex problems, contact qualified service personnel.
- Inverter Not Producing Power:
- Check if the DC switch is in the "ON" position.
- Verify that solar panels are receiving sufficient sunlight.
- Ensure all DC and AC connections are secure.
- Check the grid connection status; the inverter will not operate if the grid is down.
- Error Messages on Display/App:
- Refer to the detailed error code list in the comprehensive user manual (if available) or the Sungrow support documentation.
- Common errors might relate to grid voltage fluctuations, PV overvoltage, or internal faults.
- Low Power Output:
- Check for shading on solar panels.
- Ensure panels are clean.
- Verify MPPT voltage range is optimal for your solar array.
The inverter includes protection features such as PV reverse connection protection, AC short circuit protection, leakage current protection, and grid monitoring to prevent damage and ensure safety.
8. User Tips
- Kilowatt Selection: When selecting the appropriate kilowatt rating for your inverter, consider your total solar panel array capacity (DC input), your household's or facility's energy consumption, and local grid regulations. It's generally recommended to match the inverter's rated AC output power closely to your expected AC load, while ensuring the DC input capacity from your panels is within the inverter's maximum input voltage and current limits. A high DC/AC ratio (up to 1.3 for this model) allows for oversizing the PV array relative to the inverter's AC output, which can maximize energy harvest during off-peak sun hours.
- Remote Monitoring: Utilize the optional WiFi/GPRS module and the Solarmon app for continuous monitoring. This allows you to track performance, identify potential issues early, and receive alerts.
- Professional Installation: Always engage certified professionals for installation to ensure safety, compliance with electrical codes, and optimal system performance.
9. Warranty and Support
Your Sungrow inverter comes with a warranty. Please refer to the included Sungrow SG/WG Series Inverter Warranty Card for specific terms and conditions, including warranty period and coverage details. Keep your purchase date and equipment number readily available for any warranty claims.
Figure 5: Example of Sungrow Warranty Card
For technical support or service inquiries, please contact Sungrow customer service or your authorized dealer. You may need to provide details such as the product information, number of equipment, and purchase date as found on your warranty card.
