Sako Sunon V 6.5Kva/6.2KW 48V Hybrid Solar Inverter User Manual

1. Introduction

The Sako Sunon V Hybrid Solar Inverter is a versatile power solution designed for both off-grid and on-grid applications. Featuring a built-in 120A MPPT solar charge controller and pure sine wave output, it efficiently converts solar energy to power your home or business. This inverter supports operation with or without batteries, offering flexibility for various energy storage needs. It includes advanced communication ports and monitoring capabilities for optimal system management.

Key Features:

• Built-in Local Wifi for mobile monitoring (App available)
• OTG function for data event storage
• Optional RGB or movable LCD case design
• Reserved communication ports (RS485, CAN-BUS, RS232) for Battery Management System (BMS)
• Battery independent design
• Battery equalization to extend lifecycle
• Dual (Twin) AC Output
• Enhanced charging power
• Built-in anti-dust kit
• Hybrid functionality for off-grid or on-grid operation

2. Safety Information

Please read all instructions and warnings carefully before installation and operation. Improper installation or use can result in electric shock, fire, or serious injury. Keep this manual for future reference.

• All wiring must be performed by qualified personnel.
• Ensure proper DC over-current protection and disconnection devices are installed between the battery and the inverter.
• Verify correct polarity for all connections.
• Do not attempt to disassemble or repair the inverter yourself. Contact qualified service personnel.
• Ensure adequate ventilation around the inverter to prevent overheating.
• Keep children away from the inverter and its connections.

3. Product Overview

Front and Side View:

Figure 3.1: Front and Side View of the Inverter

1. LCD display
2. RGB LED bar (refer to LCD Setting section for details)
3. Touchable function keys
4. Power on/off switch

Rear Panel Connections:

Figure 3.2: Rear Panel Connections

5. AC input connectors
6. AC output connectors (Load connection)
7. Battery connectors
8. PV connectors
9. Circuit breaker
10. Dry contact
11. USB port as USB communication port and USB function port
12. RS-232 communication port
13. BMS communication port: CAN, RS-485 or RS-232

Product Overview Video:

Video 3.1: Sako Sunon V Series Hybrid MPPT Solar Inverter Overview

4. Setup and Installation

System Diagram:

Figure 4.1: General System Diagram

Figure 4.2: Operation with and without Battery Connected

Battery Connection:

CAUTION: For safety operation and regulation compliance, it's requested to install a separate DC over-current protector or disconnection device between battery and the inverter. It may not be necessary to have a disconnection device in some applications, however, it's still recommended to have over-current protection installed. Please refer to typical amperage as required.

WARNING! All wiring must be performed by a qualified personnel.

WARNING! It's very important for system safety and efficient operation to use appropriate cable for battery connection. To reduce risk of injury, please use the proper recommended cable and terminal size as below.

Figure 4.3: Battery Connection Diagram and Recommended Cable/Terminal Sizes

Please follow below steps to implement battery connection:

1. 4.5KVA model supports 24VDC system and 6.5KVA model supports 48VDC system. Connect all battery packs as below chart. It is recommended to connect minimum of 100Ah capacity battery for 4.5KVA model and 200Ah capacity battery for 6.5KVA model.
2. Prepare four battery wires for 4.5KVA model and two or four battery wires for 6.5KVA model depending on cable size (refer to recommended cable size table). Apply ring terminals to your battery wires and secure it to the battery terminal block with the bolts properly tightened. Refer to battery cable size for torque value. Make sure polarity at both the battery and the inverter is correctly connected and ring terminals are secured to the battery terminals.

5. Operating Instructions

Display and Controls:

The inverter features an intuitive LCD display and touchable function keys for monitoring and configuration. The RGB LED bar provides visual status indications.

Figure 5.1: Inverter Display and Controls

Charging Modes:

The inverter offers user-configurable AC/Solar Charging modes and Load Output modes to optimize your power system.

Figure 5.2: Four Charging Modes

• Solar Charging: Prioritizes solar power for charging.
• Electricity Utility Priority: Prioritizes utility grid power for charging.
• Solar Priority: Prioritizes solar power for load, then utility.
• Hybrid Charging: Combines solar and utility power for charging and load.

24/7 Uninterrupted Power Supply:

Figure 5.3: 24/7 Uninterrupted Power Supply

The inverter is designed to provide continuous power by intelligently managing daytime charging from solar and nighttime discharge from batteries, ensuring an uninterrupted power supply.

6. Specifications

Figure 6.1: Technical Parameter Table

7. Maintenance

Regular maintenance ensures the longevity and optimal performance of your Sako Sunon V inverter.

• Cleaning: Periodically clean the exterior of the inverter, especially the ventilation openings, to prevent dust buildup. The built-in anti-dust kit helps, but regular checks are recommended.
• Connections: Annually inspect all electrical connections (PV, battery, AC input/output) for tightness and signs of corrosion. Loose connections can lead to overheating and system failure.
• Environment: Ensure the operating environment remains within specified temperature and humidity ranges. Avoid exposing the inverter to direct sunlight, rain, or excessive dust.
• Battery Health: If using batteries, monitor their health and perform any recommended maintenance as per the battery manufacturer's guidelines. The inverter's battery equalization feature helps extend battery lifecycle.

8. Troubleshooting

This section provides solutions to common issues you might encounter. For more complex problems, please contact technical support.

Common Issues:

• No Power Output: Check AC input breaker, battery connections, and PV input. Ensure the inverter is switched on.
• Low Power Output: Verify PV array voltage and current are within specifications. Check for shading on solar panels.
• Inverter Overheating: Ensure adequate ventilation. Clean any dust from cooling vents. Reduce load if continuously operating at maximum capacity in high ambient temperatures.
• Display Not Working: Check power supply to the inverter. If the unit powers on but the display is blank, contact support.
• Communication Issues (Wifi/BMS): Ensure Wifi signal strength is adequate. Verify communication cable connections for RS485, CAN-BUS, or RS232. Check app settings for mobile monitoring.

Q&A Hint:

Q: Does the inverter support SUB and SBU modes?
A: Yes, the Sako Sunon V Hybrid Solar Inverter supports various operating modes, including those that prioritize Solar (SBU) or Utility (SUB) for charging and load, allowing for flexible power management.

9. User Tips

• Battery Sizing: For optimal performance and longevity, ensure your battery bank capacity meets or exceeds the recommended minimums (100Ah for 4.5KVA, 200Ah for 6.5KVA).
• Cable Management: Use appropriately sized cables for all connections, especially for batteries, to minimize energy loss and ensure safety. Refer to the provided cable size table.
• Monitoring: Utilize the built-in Local Wifi and mobile app for continuous monitoring of your system's performance, including PV input, battery status, and load output.
• Mode Selection: Experiment with the different charging and load output modes (e.g., Solar Charging, Electricity Utility Priority, Solar Priority, Hybrid Charging) to find the most efficient setup for your specific energy consumption patterns and solar availability.

10. Warranty and Support

For warranty information, technical support, or service inquiries, please refer to the documentation provided with your purchase or contact your authorized Sako dealer. Keep your purchase receipt and product serial number handy when contacting support.