The Deye Inverter SUN-14/15/16/18/20K-SG05LP3-EU-SM2 is a high-capacity, three-phase hybrid inverter engineered for advanced solar energy systems. With cutting-edge features like multiple operation modes, dual MPPT technology, and smart energy management, this inverter is ideal for residential, commercial, and industrial use.
Comprehensive Product Overview
This inverter integrates solar, battery, and grid systems seamlessly, offering unparalleled flexibility and efficiency. Its robust design ensures reliable performance in diverse applications.
Key Features:
- Three-Phase Output: Supports 230/400V three-phase systems. Learn more about three-phase output1.
- Multi-Operation Modes: On-grid, off-grid, and UPS functionality.
- Dual MPPT Trackers: Enhances energy harvesting from multiple arrays. Discover how MPPT technology2 optimizes solar energy.
- Battery Compatibility: Works with both lithium-ion and lead-acid batteries.
- High Charging Capacity: Up to 350A for flexible battery configurations.
- IP65 Protection: Suitable for indoor and outdoor installations.
- Advanced Monitoring: WiFi and GPRS connectivity for real-time monitoring.
- Energy Optimization: Features like Time-of-Use and smart load management.
Technical Specifications:
| Model | SUN-14K | SUN-15K | SUN-16K | SUN-18K | SUN-20K |
|---|---|---|---|---|---|
| Rated Power Output | 14 kW | 15 kW | 16 kW | 18 kW | 20 kW |
| Max. PV Input Power | 21,000 W | 22,500 W | 24,000 W | 27,000 W | 30,000 W |
| MPPT Voltage Range | 160–800V | 160–800V | 160–800V | 160–800V | 160–800V |
| Max. Efficiency | 97.6% | 97.6% | 97.6% | 97.6% | 97.6% |
| Max. Charging Current | 260 A | 280 A | 300 A | 330 A | 350 A |
Installation and Space Requirements
Proper installation ensures optimal performance and safety.
Installation Environment:
- Placement: Mount on a stable, vertical wall sheltered from direct sunlight and rain.
- Ventilation: Maintain a minimum clearance of 50 cm on all sides for heat dissipation.
- Operating Temperature: -40°C to +60°C (derating applies above 45°C).
- Ingress Protection: IP65-rated for outdoor use. Learn more about IP65 protection3.
Mounting Instructions:
- Secure the provided mounting bracket to a load-bearing wall using expansion bolts.
- Hang the inverter on the bracket and ensure it is level and stable.
- Verify stability before connecting cables.
Pre-Installation Checklist:
- Wall mounting bracket and hardware
- Approved AC and DC cables
- User manual for wiring instructions. Find detailed mounting instructions4.
Battery and Grid Connection Guidelines
The SUN-14/15/16/18/20K-SG05LP3-EU-SM2 supports flexible battery and grid connections.
Battery Connection:
- Select appropriate cables (refer to the table below).
- Ensure correct polarity and secure connections with a torque of 24.5 Nm. Learn why torque value5 is important for secure electrical connections.
- Pass cables through the provided magnetic rings to minimize interference. Understand the role of magnetic rings6 in electrical connections.
Recommended Cable Sizes:
| Model | Wire Size | Cable (mm²) | Torque Value (Nm) |
|---|---|---|---|
| 14/15/16kW | 0 AWG | 50 | 24.5 |
| 18/20kW | 3/0 AWG | 70 | 24.5 |
Grid and Load Connection:
- Install a 100A AC breaker for grid and backup load connections.
- Follow wiring diagrams to ensure correct polarity and secure connections.
Solar PV Integration and MPPT Optimization
This inverter’s dual MPPT trackers maximize solar energy utilization.
PV Module Requirements:
- Maximum PV Input Voltage: 800V.
- MPPT Voltage Range: 160–800V.
- Maximum PV Input Power: Up to 30,000 W (for the 20kW model).
Recommended PV Parameters:
| Parameter | Value | Notes |
|---|---|---|
| Maximum Voc | 800V | Do not exceed this limit |
| MPPT Voltage Range | 160–800V | Optimal efficiency range |
| Strings per MPPT Tracker | 2 | Ensure modules match inverter specs. Learn why it is crucial to match inverter specs7. |
Connection Steps:
- Turn off the DC isolator before connecting solar modules.
- Connect PV strings to the MPPT inputs, ensuring correct polarity.
- Use approved connectors for secure and waterproof connections.
Operational Modes and Monitoring
The Deye Hybrid Inverter offers flexible operation modes and advanced monitoring.
Operating Modes:
- On-Grid Mode: Uses solar and battery power first, then exports surplus to the grid.
- Off-Grid Mode: Supplies loads independently using solar and battery energy.
- UPS Mode: Ensures uninterrupted power during outages. Learn more about UPS mode in hybrid inverters8.
Monitoring and Connectivity:
- LCD Display: Provides real-time data, system status, and error codes.
- WiFi/GPRS Monitoring: Enables remote monitoring via the Deye app or cloud service. Learn how WiFi/GPRS monitoring works for inverters9.
- Advanced Diagnostics: Tracks energy generation, consumption, and battery health.
Maintenance and Troubleshooting
Regular maintenance ensures long-term reliability and performance.
Maintenance Tips:
- Inspect connections monthly for wear or damage.
- Keep vents clear of dust and debris to maintain proper cooling.
- Update firmware periodically for compatibility with new features.
Troubleshooting Common Issues:
| Issue | Possible Cause | Solution |
|---|---|---|
| Inverter not powering on | Loose connections | Check and secure all wiring |
| Low energy efficiency | Dirty solar panels | Clean panels and optimize settings |
| Error Code: Overload | High connected load | Reduce load and restart inverter |
| Error Code: Overtemperature | Poor ventilation | Improve airflow around the inverter |
Conclusion
The Deye Inverter SUN-14/15/16/18/20K-SG05LP3-EU-SM2 delivers exceptional performance, flexibility, and reliability for advanced solar energy systems. Its robust features and intelligent design make it a top choice for residential, commercial, and industrial applications. Optimize your energy system today with this cutting-edge inverter.
Footnotes:
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Three-phase output provides more balanced power distribution, reducing voltage fluctuations and ensuring reliable performance, especially in larger installations. ↩
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MPPT technology tracks the maximum power point of the solar panels, optimizing energy capture and conversion for better overall system efficiency. ↩
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IP65-rated protection ensures that the inverter is dust-tight and protected against water jets, making it ideal for outdoor installations. ↩
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Proper mounting is crucial for inverter stability and safety. Follow step-by-step mounting instructions to ensure reliable performance and prevent damage. ↩
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The correct torque value ensures that electrical connectors are neither too loose nor too tight, preventing overheating or damage to the cables and connectors. ↩
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Magnetic rings are used to reduce electromagnetic interference (EMI), ensuring stable and efficient operation of the inverter and connected devices. ↩
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Ensuring that the solar modules and inverter are compatible in terms of voltage and current prevents damage and enhances system efficiency. ↩
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UPS mode in hybrid inverters ensures continuous power supply by switching to battery backup during grid outages, making it essential for homes and businesses that rely on uninterrupted power. ↩
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WiFi and GPRS monitoring allow users to access real-time data and control their inverter remotely via apps or cloud-based services, improving system management and diagnostics. ↩
