Solis S5 Series 3-Phase Dual MPPT Solar Inverter Manual
Model Series: SOLIS 3P4kW to 3P20kW S5
Introduction
This manual provides comprehensive instructions for the installation, operation, and maintenance of the Solis S5 Series three-phase dual MPPT DC solar inverters. These inverters are designed for efficient and reliable conversion of DC power generated by photovoltaic panels into AC power for grid-connected applications. This document is intended for qualified installers and end-users who understand electrical safety principles.
The Solis S5 series includes models ranging from 4kW to 20kW, offering flexibility for various residential and commercial solar energy systems.
Key Features
- High efficiency conversion
- Dual MPPT (Maximum Power Point Tracking) for optimized energy harvest from panels with different orientations or shading
- Wide DC input voltage range
- Integrated DC switch for safety
- User-friendly LCD display and LED indicators
- Multiple communication options (e.g., Wi-Fi, GPRS) for remote monitoring
- Robust design for reliable operation in diverse environmental conditions
- Compliance with international safety and grid codes
Technical Specifications
The following table details the specifications for the Solis S5 Series 3-Phase Dual MPPT DC Solar Inverters. Please refer to specific model datasheets for exact parameters.
| Parameter | SOLIS 3P4kW S5 | SOLIS 3P5kW S5 | SOLIS 3P6kW S5 | SOLIS 3P8kW S5 | SOLIS 3P10kW S5 | SOLIS 3P12kW S5 | SOLIS 3P15kW S5 | SOLIS 3P17kW S5 | SOLIS 3P20kW S5 |
|---|---|---|---|---|---|---|---|---|---|
| Rated AC Power Output | 4 kW | 5 kW | 6 kW | 8 kW | 10 kW | 12 kW | 15 kW | 17 kW | 20 kW |
| Max DC Input Power | 5.2 kW | 6.5 kW | 7.8 kW | 10.4 kW | 13 kW | 15.6 kW | 19.5 kW | 22.1 kW | 26 kW |
| MPPT Voltage Range | 150V - 1000V (typical) | ||||||||
| Max DC Input Voltage | 1100V | ||||||||
| Nominal AC Voltage | 380V / 400V | ||||||||
| Nominal AC Frequency | 50Hz / 60Hz | ||||||||
| Max Efficiency | > 98.5% | ||||||||
| Operating Temperature | -25°C to +60°C | ||||||||
| Protection Class | IP65 | ||||||||
| Dimensions (W x H x D) | Approx. 500 x 400 x 180 mm | ||||||||
| Weight | Approx. 20-25 kg | ||||||||
Note: Specific values may vary by model and region.
Installation
Proper installation is crucial for the safe and efficient operation of the inverter. Follow these general guidelines:
Mounting
The inverter should be mounted vertically on a stable, non-flammable surface in a well-ventilated area, protected from direct sunlight and extreme temperatures. Ensure adequate clearance around the unit for heat dissipation. A typical installation diagram shows the inverter mounted on a wall using a mounting bracket, with space above and below for airflow. ℹ️ [Mounting bracket and screws included]
Electrical Connections
All electrical connections must be performed by a qualified electrician in accordance with local regulations and codes.
- DC Input: Connect the positive and negative terminals of the PV array to the corresponding DC input terminals on the inverter. Ensure the DC input voltage is within the inverter's specified range. The inverter features dual MPPT inputs (MPPT1 and MPPT2).
- AC Output: Connect the AC output terminals of the inverter to the AC distribution board via an appropriate circuit breaker.
- Grounding: Ensure the inverter's grounding terminal is properly connected to the system ground for safety.
A wiring diagram typically illustrates the connection sequence: PV array DC positive/negative to inverter DC inputs, inverter AC output to AC breaker, AC breaker to grid/load, and inverter ground terminal to system ground. ⚙️ [Ensure all connections are secure]
Operation and Monitoring
The inverter is designed for automatic operation once connected and configured.
Startup and Shutdown
The inverter automatically starts producing power when sufficient sunlight is available and the grid is present. It shuts down automatically when sunlight is insufficient or in case of grid disturbances.
Display and Indicators
The front panel typically includes an LCD screen displaying real-time operational data such as PV input voltage, current, power output, grid voltage, frequency, and system status. LED indicators provide quick status updates: Green usually indicates normal operation, Yellow for warning, and Red for fault. ? [Check display for status]
Monitoring
Remote monitoring can be achieved through optional communication modules (e.g., Wi-Fi, GPRS). This allows users to track system performance, view historical data, and receive alerts via a web portal or mobile application. ? [Access monitoring portal for performance data]
Maintenance and Troubleshooting
Regular maintenance ensures optimal performance and longevity of the inverter.
Routine Checks
- Periodically clean the inverter's exterior and ventilation openings to prevent dust accumulation.
- Inspect all electrical connections for tightness and signs of corrosion.
- Check the display for any error codes or warning messages.
Troubleshooting
If the inverter displays an error code, consult the error code table in the full manual for specific troubleshooting steps. Common issues and solutions include:
- No Power Output: Check DC input voltage, PV array connections, and AC output breaker.
- Low Efficiency: Verify MPPT tracking, check for shading on panels, and ensure proper ventilation.
- Overheating: Ensure ventilation openings are clear and ambient temperature is within limits.
⚠️ [Always disconnect DC and AC power before performing any maintenance or inspection.]
Safety Precautions
WARNING: High voltages are present within the inverter. Installation, maintenance, and troubleshooting must only be performed by qualified personnel.
- Read and understand all safety instructions before installation or operation.
- Ensure proper grounding of the inverter and the entire PV system.
- Use appropriate personal protective equipment (PPE) when working with electrical systems.
- Never operate the inverter without proper ventilation.
- Disconnect all power sources (DC and AC) before performing any work on the inverter.
- Follow all local electrical codes and regulations.
The manufacturer is not liable for damage or injury resulting from improper installation or misuse of the product.
