SUMRY HGX Hybrid Solar Inverter User Manual

1. Introduction

This manual provides essential information for the safe and efficient operation of your SUMRY HGX Hybrid Solar Inverter. The HGX series is a versatile DC/AC inverter designed for hybrid solar PV systems, featuring a touch screen interface and MPPT charging capabilities. Please read this manual thoroughly before installation and use, and keep it for future reference.

2. Safety Information

WARNING: Electrical Shock Hazard. Installation and maintenance should only be performed by qualified personnel.

• Ensure all wiring is correctly connected and securely fastened before powering on the inverter.
• Do not attempt to open or repair the inverter yourself. Refer to qualified service personnel.
• Keep the inverter away from water, moisture, and flammable materials.
• Ensure adequate ventilation around the inverter to prevent overheating.
• Always disconnect all power sources (PV, battery, AC input) before performing any maintenance or wiring.
• The inverter is rated IP20, meaning it is protected against solid objects larger than 12.5mm but has no protection against liquids. Install in a dry environment.

3. Product Overview

The SUMRY HGX Hybrid Solar Inverter integrates a solar charger, AC charger, and inverter into one compact unit. It features a touch screen for easy configuration and monitoring.

3.1. Visual Inspection

Familiarize yourself with the inverter's physical components and connections.

Figure 1: Front View of the Inverter

Figure 2: Rear View with Connection Terminals

3.2. Product Video Overview

Watch this video for a detailed 360-degree view of the SUMRY HGX Hybrid Solar Inverter.

4. Specifications

The following table details the technical specifications for the SUMRY HGX Hybrid Solar Inverter.

Figure 3: Detailed Product Specifications

5. Setup and Installation

Proper installation is crucial for the safe and optimal performance of your inverter. Ensure you have all necessary tools and safety equipment before proceeding.

5.1. Mounting the Inverter

The inverter should be mounted vertically on a solid surface in a well-ventilated, dry area, away from direct sunlight and heat sources. Ensure there is sufficient clearance around the unit for airflow.

5.2. Wiring Connections

Follow the wiring diagram carefully. All connections must be tight and secure to prevent loose connections, which can cause overheating or damage.

Figure 4: Inverter Wiring Diagram

1. PV Input (DC): Connect your solar panel array to the PV+ and PV- terminals. Ensure the PV voltage is within the specified MPPT voltage range (55-350VDC) and does not exceed the maximum DC voltage (350VDC).
2. Battery Connection: Connect the battery bank to the BATTERY+ and BATTERY- terminals. Observe correct polarity. The inverter supports Lithium-ion batteries. Ensure your battery voltage matches the inverter model (24VDC for HGX-4KW, 48VDC for HGX-6KW).
3. AC Input (Grid/Generator): Connect the AC utility grid or a compatible generator to the AC INPUT terminals (L, N, G).
4. AC Output (Load): Connect your AC loads to the AC OUTPUT terminals (L, N, G).
5. Communication Ports: Use the RS232-WIFI or RS485-BMS ports for monitoring and communication with external devices or battery management systems.
6. Grounding: Ensure the inverter is properly grounded according to local electrical codes.

5.3. Initial Power-Up

1. Double-check all wiring connections for correctness and tightness.
2. Turn on the battery breaker.
3. Turn on the PV array breaker.
4. Turn on the AC input breaker (if connected to grid/generator).
5. Press the ON/OFF button on the inverter to power it on.
6. Observe the display for any error messages or abnormal indications.

6. Operating Instructions

The SUMRY HGX inverter features a touch screen display for easy interaction and monitoring.

6.1. Touch Screen Display and Controls

The front panel includes a touch screen and several control buttons:

• Display: Shows real-time system status, input/output voltages, battery level, load percentage, and operational modes.
• ESC Button: Used to exit menus or cancel selections.
• UP Button: Navigates up through menu options or increases values.
• DOWN Button: Navigates down through menu options or decreases values.
• ENTER Button: Confirms selections or enters sub-menus.

6.2. Operating Modes

The inverter typically operates in various modes, including:

• Utility Mode (Line Mode): Prioritizes AC input from the grid to power loads and charge batteries.
• Battery Mode: Powers loads from the battery when the grid is unavailable or configured as primary source.
• Solar Mode: Prioritizes solar power to loads and battery charging.
• Hybrid Mode: Intelligently combines solar, battery, and grid power based on user settings and availability.

Refer to the on-screen menu for detailed configuration of operating priorities and parameters.

6.3. Monitoring

The touch screen provides comprehensive monitoring data. For remote monitoring, utilize the RS232-WIFI or RS485-BMS communication ports with compatible software or devices.

7. Maintenance

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

• Cleaning: Periodically clean the exterior of the inverter with a dry cloth. Ensure ventilation openings are free from dust and debris. Do not use liquid cleaners.
• Connection Check: Annually inspect all electrical connections for tightness and signs of corrosion. Re-tighten if necessary.
• Ventilation: Ensure the area around the inverter remains clear and well-ventilated.
• Firmware Updates: Check the manufacturer's website for any available firmware updates to improve performance or add features.

8. Troubleshooting

If you encounter issues with your inverter, consult the display for error codes or messages. Here are some general troubleshooting steps:

• No Power/Display Off: Check AC input, battery connections, and the ON/OFF switch. Ensure battery voltage is within operating range.
• No AC Output: Verify AC output connections, check for overload conditions, and ensure the inverter is not in a fault state.
• Low Battery Voltage Alarm: Check battery connections, ensure solar panels are producing power, and AC input is available for charging.
• Overload Warning: Reduce the connected load. The inverter may automatically restart after an overload condition clears.
• High Temperature Warning: Ensure adequate ventilation. Clean any dust from the cooling fins and fans.

For persistent issues, contact technical support.

9. User Tips

• Optimize Battery Settings: For Lithium-ion batteries, ensure the charging parameters (voltage, current) are correctly configured on the inverter to match your battery manufacturer's recommendations. This is crucial for battery health and lifespan.
• Monitor Performance: Regularly check the inverter's display or connected monitoring system to understand your energy production and consumption patterns. This helps in identifying potential issues early.
• Ventilation is Key: Even though the inverter has internal fans, ensuring good ambient airflow will significantly help in maintaining optimal operating temperatures and extending the unit's life.
• Cable Sizing: Always use appropriately sized cables for all connections (PV, battery, AC) to minimize energy loss and prevent overheating.

10. Warranty and Support

The SUMRY HGX Hybrid Solar Inverter comes with a 1-Year Warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use.

For technical support, warranty claims, or service inquiries, please contact your original point of purchase or SUMRY customer service. When contacting support, please have your inverter model number and purchase date available.