SUMRY Hybrid Solar Inverter User Manual

1. Introduction and Overview

This manual provides comprehensive instructions for the installation, operation, and maintenance of the SUMRY Hybrid Solar Inverter, Model HGX-4KW. This advanced power converter is designed to efficiently manage solar power, battery storage, and utility grid input to provide reliable AC power for various applications. It features a pure sine wave output, a 140A MPPT charge controller, and supports both battery-less operation and various battery types.

2. Safety Information

Please read and understand all safety instructions before installing or operating the inverter. Failure to follow these instructions may result in electric shock, fire, serious injury, or death.

• Qualified Personnel: Installation and maintenance should only be performed by qualified personnel.
• High Voltage: The inverter operates with high voltages. Do not open the unit or attempt repairs unless you are a qualified technician.
• Proper Grounding: Ensure the inverter is properly grounded according to local electrical codes.
• Ventilation: Install the inverter in a well-ventilated area to prevent overheating. Do not block ventilation openings.
• Battery Safety: When connecting batteries, ensure correct polarity. Batteries can produce explosive gases; ensure adequate ventilation.
• Emergency Shutdown: Familiarize yourself with the emergency shutdown procedures for the entire solar power system.

3. Product Features

• Unique Glass Cover Design: Tempered glass upper cover with big 6.25 inch LCD display and touchable buttons, cool look with high transparency, more clear to see real-time data of your inverter.
• Powerful Inverter: 4000W rated and 8000W peak output. Please check the rated and peak power of your load, add up the watts used by all devices you think you'll run at the same time and see whether it is within the output power range of the inverter.
• Stable and Efficient: Pure sine wave output, no interference, extends life of your devices, especially sensitive inductive appliances. Build-in 140A MPPT charge controller, max. PV 5600W 350VDC, max. conversion efficiency 98%.
• Battery-free Running: This power inverter can work without battery in daytime with enough PV power, use PV DC current to run the loads. As well it works with most kinds of 24V batteries like AGM, Gel, Lead-acid, Lithium-ion and LiFePO4.
• Hybrid Solar Inverter: This power inverter can configure charging and output priority of solar panels, battery or utility, allowing for energy storage and direct use, provides you sustainable power for off grid life, power outage, emergency.
• Easy Settings: With function buttons and a LCD display, indicating the operating status and input/output power information, allowing you to set parameters like battery charging current, priority of AC and solar energy.
• Safe and Reliable: Built-in three cooling fans. Multiple protections for overload, overheat, over current, short circuit. One-key restoration to default settings. Smart battery charge design to optimize battery life.

Figure 3.1: Front view of the SUMRY Hybrid Solar Inverter showing the glass top cover and LCD display.

4. What's in the Box

The package for your SUMRY Hybrid Solar Inverter includes the following items:

• 4000W Hybrid Inverter
• Instruction Manual (this document)

5. Specifications

Figure 5.1: Overview of the SUMRY Hybrid Solar Inverter's key specifications and features.

6. Setup and Installation

Proper installation is crucial for the safe and efficient operation of your inverter. Please follow these steps carefully. Refer to the installation video for a visual guide.

6.1 Unboxing and Inspection

1. Carefully open the packaging and remove the inverter and all accessories.
2. Inspect the unit for any visible damage that may have occurred during shipping. If damage is found, contact your supplier immediately.
3. Verify that all items listed in the "What's in the Box" section are present.

6.2 Wiring Connections

Before making any electrical connections, ensure all power sources (solar, utility, battery) are disconnected and safely isolated. Use appropriate wire gauges and follow all local electrical codes.

1. Battery Connection: Connect the battery cables to the designated positive (+) and negative (-) terminals on the inverter. Ensure correct polarity.
2. PV (Solar Panel) Connection: Connect the solar panel array cables to the PV input terminals. Observe correct polarity for positive (+) and negative (-).
3. AC Input (Utility/Generator) Connection: Connect the AC input cables (Line, Neutral) from your utility grid or generator to the INPUT terminals.
4. AC Output (Load) Connection: Connect your AC loads (appliances, home wiring) to the OUTPUT terminals (Line, Neutral).
5. Grounding: Connect a proper ground wire to the designated grounding terminal on the inverter chassis. This is critical for safety.

Figure 6.2: Detailed wiring connections for the inverter, including PV, AC input, AC output, and battery terminals.

Figure 6.3: Illustration of the inverter's input (charging) and output modes, demonstrating its hybrid capabilities.

7. Operating Instructions

7.1 Initial Power-Up

1. After all connections are securely made and verified, switch on the battery breaker (if applicable).
2. Switch on the PV array breaker.
3. Switch on the AC input breaker (utility/generator).
4. Press the "ON/OFF" button on the inverter to power it on. The LCD display will illuminate.

7.2 LCD Display and Button Functions

The large LCD display provides real-time operational data. The touchable buttons allow for easy navigation and parameter settings.

Figure 7.1: The inverter's LCD display showing various operational parameters and status indicators.

• ESC Button: Used to exit from a menu or cancel a setting.
• UP Button: Used to scroll up through menu options or increase a value.
• DOWN Button: Used to scroll down through menu options or decrease a value.
• ENTER Button: Used to confirm a selection or enter a menu.

Navigate through the menus using the UP/DOWN buttons and press ENTER to select or confirm. Refer to the detailed menu structure in the full manual for advanced settings like battery charging current, AC/solar priority, and output voltage/frequency.

8. Maintenance

Regular maintenance ensures the longevity and optimal performance of your SUMRY Hybrid Solar Inverter.

• Cleaning: Periodically clean the exterior of the inverter with a soft, dry cloth. Do not use liquid cleaners or solvents. Ensure ventilation openings are free from dust and debris.
• Connection Check: Annually inspect all electrical connections (PV, battery, AC input/output, ground) for tightness and corrosion. Re-tighten if necessary.
• Ventilation: Ensure the inverter's cooling fans are operating correctly and are not obstructed. The inverter features three intelligent cooling fans for efficient heat dissipation.
• Environmental Conditions: Verify that the operating environment remains within the specified temperature and humidity ranges.

Figure 8.1: Internal components highlighting the three intelligent cooling fans and multi-safety protection features.

9. Troubleshooting

If you encounter issues with your inverter, refer to the following common problems and their solutions. For persistent issues, contact technical support.

10. Warranty and Support

The SUMRY Hybrid Solar Inverter is backed by a manufacturer's warranty. For specific warranty terms and conditions, please refer to the warranty card included with your product or contact SRGFTS customer support.

For technical assistance, troubleshooting beyond this manual, or spare parts, please contact SRGFTS customer service through their official website or the contact information provided in your purchase documentation. Protection plans are also available for extended coverage.