1. Introduction
The Deye SUN-3/4/5/6K-SG05LP3-EU-SM2 series comprises sophisticated three-phase hybrid inverters designed to meet the energy needs of residential and commercial establishments. These units are engineered to seamlessly integrate solar, battery storage, and grid electricity to provide a reliable and efficient energy management system. Whether for new installations or retrofitting existing solar setups, these hybrid inverters offer a robust solution that maximizes energy utilization and enhances system resilience.
This manual provides essential information for the safe and efficient installation, operation, and maintenance of your Deye Hybrid Inverter. Please read it thoroughly before proceeding with any procedures.
2. Key Features
- High Charging/Discharging Current: The Deye SUN series supports a maximum charging and discharging current of 135A, ensuring rapid energy storage and retrieval.
- Compatibility with Diesel Generators: These inverters support the storage of energy from diesel generators, providing versatility and additional backup power capabilities.
- Scalable Parallel Operation: Up to 10 units can operate in parallel in both on-grid and off-grid modes, allowing for flexible system expansion.
- AC Coupling for Retrofit: Easy integration into existing solar systems through AC coupling for enhanced performance and energy storage.
- Time-based Battery Management: Supports six time periods for battery charging and discharging, optimizing energy usage and cost-effectiveness.
- Low Voltage Battery with Isolation: Operates with a 48V low voltage battery and transformer isolation design for safe and efficient energy storage.
- Unbalanced Output Capability: Each phase can handle a 100% unbalanced output with a maximum output of up to 50% of the rated power per phase.
3. Setup and Installation
Installation of the Deye Hybrid Inverter should only be performed by qualified and certified personnel in accordance with local electrical codes and regulations. Improper installation can lead to serious injury or damage to the equipment.
3.1. Unpacking and Inspection
- Carefully unpack the inverter and inspect it for any signs of damage during transit.
- Verify that all components listed in the packing list are present.
- Report any damage or missing parts to your supplier immediately.
3.2. Mounting Location
- Choose a mounting location that is well-ventilated, protected from direct sunlight, rain, and extreme temperatures.
- Ensure the mounting surface is strong enough to support the inverter's weight (approx. 35.2 kg).
- Maintain adequate clearance around the inverter for proper air circulation and cooling. The inverter uses an intelligent air cooling system.
- The inverter is IP65 rated, suitable for outdoor installation, but protection from harsh elements is recommended for longevity.
3.3. Electrical Connections
Refer to the detailed wiring diagrams provided in the full product manual (PDF, if available) for specific connection instructions. Key connections include:
- PV Input: Connect solar panel strings to the designated PV input terminals. Ensure correct polarity and voltage within specified ranges (Max PV input voltage: 550V, MPPT voltage range: 200-650V).
- Battery Connection: Connect the 48V low voltage battery bank. Ensure correct polarity. The inverter is compatible with lead-acid and lithium-ion batteries and features a self-adaptive BMS.
- AC Grid Connection: Connect the inverter to the three-phase AC grid.
- Load Connection: Connect the household or commercial loads to the inverter's AC output.
- Grounding: Ensure the inverter is properly grounded according to local electrical codes.
Warning: Incorrect wiring can cause severe damage to the inverter, batteries, and connected loads, and poses a risk of electric shock. Always consult a professional electrician.
4. Operating Instructions
4.1. Initial Startup
- After all electrical connections are securely made and verified, switch on the DC isolator for the PV array.
- Switch on the battery breaker.
- Switch on the AC breaker from the grid.
- The inverter will perform a self-test and then begin operation. Monitor the display for any error messages.
4.2. Display and Monitoring
The inverter features a display screen (visible in Figure 1) for real-time system performance tracking. This includes:
- PV power generation
- Battery charge/discharge status and level
- Grid interaction (import/export)
- Load consumption
- System status and error codes
For advanced monitoring and control, the inverter supports multiple communication protocols. Refer to the full manual for details on connecting to monitoring platforms.
4.3. Battery Management
The Deye Hybrid Inverter allows for optimized battery charging and discharging through six configurable time periods. This feature enables users to:
- Charge batteries during off-peak electricity hours.
- Discharge batteries during peak electricity hours to reduce costs.
- Prioritize solar energy for self-consumption or battery charging.
Consult the inverter's user interface or monitoring software for instructions on configuring these time periods.
4.4. Parallel Operation
If multiple inverters are installed in parallel (up to 10 units), ensure that the communication cables are correctly connected as per the installation guide. The system will automatically synchronize operation for increased power output and redundancy.
5. Maintenance
Regular maintenance ensures optimal performance and longevity of your Deye Hybrid Inverter. Always disconnect all power sources (PV, battery, grid) before performing any maintenance.
5.1. Routine Checks (Monthly)
- Visually inspect the inverter for any external damage, corrosion, or loose connections.
- Check ventilation openings for dust or debris accumulation and clean if necessary to ensure proper airflow for the intelligent air cooling system.
- Monitor the inverter's display for any warning or error messages.
5.2. Annual Inspection (by Qualified Personnel)
- Verify all electrical connections are tight and secure.
- Check the integrity of all cables and wiring for signs of wear or damage.
- Test the grounding connections.
- Perform a functional test of the inverter and its safety features.
- Inspect battery terminals for corrosion and clean if necessary.
Caution: Do not attempt to open the inverter casing. There are no user-serviceable parts inside. Refer all internal servicing to qualified technicians.
6. Troubleshooting
If your Deye Hybrid Inverter is not operating as expected, consult the following basic troubleshooting steps. For complex issues or persistent errors, contact technical support.
6.1. Common Issues and Solutions
| Problem | Possible Cause | Solution |
|---|---|---|
| Inverter not turning on | No AC grid power, PV input too low, battery disconnected, or emergency stop activated. | Check grid connection, ensure sufficient sunlight, verify battery connection, and check emergency stop button. |
| Low power output | Shading on PV panels, dirty panels, or system parameters incorrectly set. | Clear shading, clean PV panels, check system settings via monitoring interface. |
| Battery not charging/discharging | Battery connection issue, BMS fault, or incorrect time-of-use settings. | Verify battery connections, check battery health, review battery management settings. |
| Error code on display | Specific system fault. | Note the error code and consult the full product manual's troubleshooting section or contact technical support. |
7. Technical Specifications
The following table provides detailed technical specifications for the Deye SUN-3/4/5/6K-SG05LP3-EU-SM2 series hybrid inverters. Values may vary slightly between specific models (3K, 4K, 5K, 6K).
| Category | Parameter | SUN-3K-SG05LP3-EU-SM2 | SUN-4K-SG05LP3-EU-SM2 | SUN-5K-SG05LP3-EU-SM2 | SUN-6K-SG05LP3-EU-SM2 |
|---|---|---|---|---|---|
| Battery Input Data | |||||
| Battery Type | Lead-acid or Lithium-ion | ||||
| Battery Voltage Range (V) | 40-60 | ||||
| Max. Charging Current (A) | 70 | 95 | 120 | 135 | |
| Max. Discharging Current (A) | 70 | 95 | 120 | 135 | |
| Charging Strategy for Li-ion Battery | Self-adaption to BMS | ||||
| Number of Battery Input | 1 | ||||
| PV String Input Data | |||||
| Max. PV Input Power (W) | 4500 | 6000 | 7500 | 9000 | |
| Max. PV Input Voltage (V) | 800 | ||||
| Start-up Voltage (V) | 160 | ||||
| MPPT Voltage Range (V) | 200-650 | ||||
| Rated PV Input Voltage (V) | 550 | ||||
| Max. Operating PV Input Current (A) | 20+20 | ||||
| Max. Input Short Circuit Current (A) | 30+30 | ||||
| No. of MPP Trackers | 2 | ||||
| No. of Strings per MPP Tracker | 1+1 | ||||
| AC Input/Output Data | |||||
| Rated AC Input/Output Active Power (W) | 3000 | 4000 | 5000 | 6000 | |
| Max. AC Input/Output Apparent Power (VA) | 3300 | 4400 | 5500 | 6600 | |
| Rated AC Input/Output Current (A) | 4.6/4.4 | 6.1/5.8 | 7.6/7.3 | 9.1/8.7 | |
| Max. AC Input/Output Current (A) | 7.4/4.8 | 8.7/6.4 | 8.4/8.0 | 10.9/9.6 | |
| Max. Three-phase Unbalanced Output Current (A) | 6.9/6.6 | 9.1/8.7 | 11.4/10.9 | 13.7/13.1 | |
| Max. Continuous AC Passthrough (grid to load) (A) | 45 | ||||
| Peak Power (off grid) (W) | 2 times of rated power, 10s | ||||
| Power Factor Adjustment Range | 0.8 leading to 0.8 lagging | ||||
| Rated Input/Output Voltage Range (V) | 220/380V, 230/400V, 0.85Un-1.1Un | ||||
| Rated Input/Output Frequency/Range (Hz) | 50/45-55, 60/55-65 | ||||
| Grid Connection Form | 3L+N+PE | ||||
| Total Current Harmonic Distortion THDI | <3% (of nominal power) | ||||
| DC Current Injection | <0.5% In | ||||
| Efficiency | |||||
| Max. Efficiency | 97.6% | ||||
| Euro Efficiency | 97.0% | ||||
| MPPT Efficiency | >99% | ||||
| Protection Equipment | |||||
| Integrated | DC Polarity Reverse Connection Protection, AC Output Overcurrent Protection, AC Output Overvoltage Protection, AC Output Short Circuit Protection, Output Overcurrent Protection, DC Terminal Insulation Impedance Monitoring, DC Component Monitoring, Ground Fault Current Monitoring, PV String Input Reverse Polarity Protection, Residual Current Monitoring Unit, Surge Protection, Overvoltage Load Drop Protection, Residual Current (RCD) Detection, Surge protection level | ||||
| Surge Protection Level | Type II DC, Type II AC | ||||
| Interface | |||||
| Communication Interface | RS485/RS232/CAN | ||||
| Monitor Code | GPRS/WiFi/Bluetooth/4G/LAN (optional) | ||||
| General Data | |||||
| Operating Temperature Range | -40 to +60°C, >45°C Derating | ||||
| Permissible Ambient Humidity | 0-100% | ||||
| Permissible Altitude | 3000m | ||||
| Noise (dB) | ≤55 | ||||
| Ingress Protection (IP) Rating | IP65 | ||||
| Isolation Design | Non-isolated | ||||
| Over Voltage Category | OVC III(DC), OVC II(AC) | ||||
| Cabinet Size (WxHxD mm) | 386×660×253 (Excluding Connectors and Brackets) | ||||
| Weight (kg) | 35.2 | ||||
| Cooling Type | Intelligent Air Cooling | ||||
| Warranty | 5 Years/10 Years. The warranty period depends on the final installation of the inverter. More info Please Refer to Warranty Policy | ||||
| Grid Regulation | IEC 61727, IEC 62116, CEI 0-21, EN 50549, NRS097, RD 140, UNE 217002, OVE Richtlinie B25, G99, VDE-AR-N 4105 | ||||
| Safety / EMC Standard | IEC/EN 61000-6-1/2/3/4, IEC/EN 62109-1, IEC/EN 62109-2 | ||||
8. Warranty and Support
8.1. Warranty Information
The Deye Hybrid Inverter comes with a standard warranty of 5 years, with an option for an extended warranty of up to 10 years. The exact warranty period and terms depend on the final installation and regional policies. Please refer to the official Deye warranty policy document for comprehensive details.
8.2. Technical Support
For technical assistance, troubleshooting beyond basic steps, or warranty claims, please contact your installer or the Deye technical support team. You may also reach out via the following contact method:
- WhatsApp: +86 13925760216
9. User Tips
While no specific user reviews or Q&A were provided for this product, general tips for optimizing your solar hybrid inverter system include:
- Monitor Regularly: Utilize the inverter's monitoring capabilities to track energy production and consumption. This helps identify potential issues early and optimize settings.
- Optimize Battery Usage: Adjust the battery charging/discharging time periods to align with your electricity tariff structure (e.g., charge during off-peak, discharge during peak) to maximize savings.
- Keep Panels Clean: Regularly clean your solar panels to ensure maximum sunlight absorption and energy generation.
- Professional Checks: Schedule annual professional inspections to ensure all components are functioning correctly and safely.
