1. Introduction
The SAKO SUNON-ULTRA Hybrid Solar Inverter is a versatile power solution designed for both on-grid and off-grid applications. It provides reliable and stable power delivery with a pure sine wave output, suitable for sensitive electronic equipment. This model supports both 24V and 48V battery systems and integrates Maximum Power Point Tracking (MPPT) technology to optimize solar energy harvesting, enhancing overall system efficiency. This manual provides essential information for the safe installation, operation, and maintenance of your inverter.
Figure 1: Front three-quarter view of the SAKO SUNON-ULTRA Hybrid Solar Inverter.
2. Safety Information
Please read all instructions and warnings carefully before installation and operation. Failure to follow these instructions may result in electric shock, fire, or severe injury. Keep this manual for future reference.
- Installation must be performed by qualified personnel in accordance with all local electrical codes.
- Do not attempt to disassemble, repair, or modify the inverter. Contact qualified service personnel for assistance.
- Ensure the inverter is installed in a well-ventilated area, away from flammable materials, moisture, and direct sunlight.
- Verify that all wiring connections are secure and correctly polarized before applying power.
- Always disconnect all power sources (AC, DC, and battery) before performing any maintenance or wiring.
- Wear appropriate personal protective equipment (PPE) during installation and maintenance.
3. Product Overview
The SAKO SUNON-ULTRA inverter features a robust design with an intuitive display and various connection ports for seamless integration into your solar power system.
Figure 2: Front view of the SAKO SUNON-ULTRA Hybrid Solar Inverter, highlighting the display and control buttons.
Key Features:
- Hybrid Functionality: Supports both grid-tied and off-grid operations.
- Pure Sine Wave Output: Ensures compatibility with all types of loads, including sensitive electronics.
- MPPT Charge Controller: Maximizes power extraction from solar panels.
- Configurable Input Voltage: Compatible with 24V and 48V battery systems.
- LCD Display: Provides real-time system status and configurable settings.
4. Setup and Installation
Proper installation is crucial for the performance and safety of your inverter. Refer to the included instruction booklet for detailed wiring diagrams and step-by-step procedures.
Figure 3: Rear view of the SAKO SUNON-ULTRA Hybrid Solar Inverter, showing AC input/output, battery, and PV connections.
Installation Steps:
- Mounting: Securely mount the inverter using the provided mounting brackets in a suitable location. Ensure adequate clearance for ventilation.
- Battery Connection: Connect the battery bank to the inverter's DC terminals. Observe correct polarity (+ to + and - to -).
- PV Array Connection: Connect the solar panel array to the PV input terminals. Ensure the PV voltage and current are within the inverter's specifications.
- AC Input/Output Connection: Connect the AC utility grid (if applicable) to the AC input and your household loads to the AC output terminals.
- Grounding: Ensure the inverter is properly grounded according to local electrical codes.
- Initial Power-Up: Once all connections are verified, switch on the battery breaker, then the PV breaker, and finally the AC input breaker (if applicable).
5. Operating Instructions
After successful installation, the inverter will automatically begin operation. The LCD display provides real-time information about the system status.
LCD Display and Buttons:
The front panel features an LCD display and several buttons for navigation and setting configuration. Refer to the detailed manual for specific menu options.
- Power On/Off: Use the dedicated power button to turn the inverter on or off.
- Menu Navigation: Use the arrow buttons to scroll through display screens and menu options.
- Settings: Access and modify operational parameters such as output voltage, charging current, and battery type.
Operating Modes:
The inverter supports various operating modes, which can be configured via the LCD display:
- Utility Priority: AC utility power is the primary source, with solar/battery as backup.
- Solar Priority: Solar power is the primary source, with utility/battery as backup.
- Battery Priority: Battery power is the primary source, with solar/utility as backup.
6. Maintenance
Regular maintenance ensures optimal performance and longevity of your SAKO SUNON-ULTRA inverter.
- Cleaning: Periodically clean the inverter's exterior with a dry cloth. Ensure ventilation openings are free from dust and debris.
- Connection Check: Annually inspect all wiring connections for tightness and signs of corrosion.
- Battery Inspection: Follow the battery manufacturer's maintenance guidelines for your battery bank.
- Environmental Check: Ensure the installation environment remains within specified temperature and humidity ranges.
7. Troubleshooting
This section provides solutions for common issues. For complex problems, contact technical support.
| Problem | Possible Cause | Solution |
|---|---|---|
| Inverter not turning on | No battery connection; Battery voltage too low; DC breaker off | Check battery connections; Charge battery; Turn on DC breaker |
| No AC output | Overload; Output breaker tripped; Inverter fault | Reduce load; Reset breaker; Check error codes on display |
| Low solar charging | Shaded panels; Dirty panels; PV connection issue | Clear shading; Clean panels; Check PV wiring |
8. Specifications
The following table outlines the technical specifications for the SAKO SUNON-ULTRA 4.2kVA Hybrid Solar Inverter.
| Feature | Detail |
|---|---|
| Manufacturer | SAKO |
| Model Name | Sunon-ultra |
| Power Output (Rated) | 4.2 kVA / 4.2 kW (Also available in 6.2 kVA / 6.2 kW variant) |
| System Voltage | 24V / 48V (Configurable) |
| Output Waveform | Pure Sine Wave |
| Power Source | Solar Powered |
| Recommended Uses | Solar power systems, RV power systems, Home backup power, Off-grid power |
| Product Dimensions (L x W x H) | 35 cm x 25 cm x 45 cm |
| Item Weight | 15.5 kg |
| Included Components | Mounting brackets, Instruction manual, Hybrid inverter, Connection cables |
9. Warranty and Support
For warranty information and technical support, please refer to the warranty card included with your product or contact SAKO customer service. Keep your purchase receipt as proof of purchase.
For further assistance, visit the official SAKO website or contact your local distributor.
