SUMRY Hybrid Inverter SP Series User Manual

1. Introduction

This manual provides essential information for the safe and efficient operation of your SUMRY Hybrid Inverter. The SP Series inverters are designed to provide reliable power for various applications, integrating solar power, battery power, and utility power. Please read this manual thoroughly before installation and use.

2. Key Features

• Pure sine wave output for sensitive electronics.
• Programmable supply priority for PV (Solar), battery, or Grid.
• High PV input voltage range (55-450VDC).
• Built-in MPPT solar charge controller (Max 110A for 3.6KW & 6.2KW models).
• Compatible with Lithium-ion batteries.
• Supports BMS communication with Lithium batteries.
• Smart battery charge design to optimize battery life.
• Comprehensive protection: Overload, high temperature, inverter output short circuit.
• Cold start function.
• Intelligent fan speed adjustment for efficient cooling.
• Optional built-in anti-dusk kit for harsh environments.
• WIFI & GPRS available for iOS and Android monitoring.

3. Product Overview

The SUMRY Hybrid Inverter features a robust design with a clear LCD display and intuitive function keys for easy operation. The rear panel provides all necessary connection terminals for AC input/output, PV input, and battery connections.

1. LCD display
2. Status indicator
3. Charging indicator
4. Fault indicator
5. Function buttons
6. Power on/off switch
7. AC input
8. AC output
9. PV input
10. Battery input
11. RS-232 communication port
12. Safety (Earth) ground
13. Circuit breaker

4. Safety Precautions

• Read all instructions and cautionary markings on the unit and this manual before operating.
• Do not disassemble the inverter. Refer servicing to qualified service personnel.
• Ensure proper grounding of the unit.
• Do not install the inverter on flammable construction materials.
• Mount on a solid surface.
• Install this inverter at eye level to allow the LCD display to be read at all times.
• For proper air circulation to dissipate heat, allow a clearance of approx. 20 cm to the side and approx. 50 cm above and below the unit.
• The ambient temperature should be between 0°C and 55°C to ensure optimal operation.
• The recommended installation position is to be adhered to the wall vertically.
• Be sure to keep other objects and surfaces as shown in the diagram to guarantee sufficient heat dissipation and to have enough space for removing wires.
• SUITABLE FOR MOUNTING ON CONCRETE OR OTHER NON-COMBUSTIBLE SURFACE ONLY.

5. Installation

5.1 Mounting the Unit

5.2 Wiring Connections

Before installing and using the inverter, it is recommended to install 4 circuit breakers in the following positions:

1. Between the battery pack and the inverter battery input.
2. Between the solar panel and the photovoltaic input of the inverter.
3. Between the power input of the grid and the inverter.
4. Between inverter output and load.

The circuit breaker is to effectively prevent misconnection or reverse connection of the mains input and the inverter output. When there is a short circuit, load short circuit, or overload in the output, the circuit breaker can directly cut off the circuit to protect the inverter.

Important Note: This inverter must work with a battery. Please ensure it is connected to a battery before connecting solar panels.

5.2.1 Battery Connection

Connect all battery packs as shown in the chart below. The 1.8KW model supports a 12VDC system, and the 3KW model supports a 24VDC system.

5.2.2 Solar Panel Connection

Connecting solar panels in series will increase the voltage. This PV voltage needs to be between the inverter's PV voltage range (50~450VDC). Please check the open circuit voltage of your solar panels first.

Note: Please make sure that the total power of solar panels does not exceed the maximum power of the inverter (Loads < Inverter power).

PV cable dimensions: 6-8mm².

6. Operation

6.1 LCD Display and Function Keys

The inverter features an LCD display and function keys for monitoring and configuration.

• PV input (1): Indicates solar panel input.
• AC input (2): Indicates utility grid input.
• Input/Battery/Temp (3): Displays input voltage, input frequency, PV voltage, battery voltage, or charger current.
• Setting Programs (4): Shows current setting programs.
• Lighting with Fault Code (5): Indicates a fault condition with a corresponding code.
• Output Voltage/Frequency (6): Displays output voltage and frequency.
• Load Level (7): Shows the current load level.
• DC/AC Inverter Circuit (8): Indicates the DC/AC inverter circuit is working.
• Battery Level (9): Displays the current battery charge level.
• Utility Charger Circuit (10): Indicates the utility charger circuit is working.
• Unit Connects to PV Panel (11): Indicates connection to solar panels.
• Unit Connects to Mains (12): Indicates connection to the utility grid.
• Load Supplied by Utility Power (13): Indicates the load is being powered by the utility.
• Unit Alarm Disabled (14): Indicates the alarm function is disabled.
• Overload (15): Indicates an overload condition.

6.2 WIFI Monitoring

The inverter supports WIFI and GPRS monitoring, allowing you to manage and monitor your system from iOS and Android devices. Download the SmartESS app using the QR codes provided.

6.3 Product Demonstration

Video 6.1: Product demonstration showing unboxing, wiring, and powering various appliances like a fan, kettle, phone, and laptop.

7. Specifications

Choose the model that best suits your needs based on the following parameters:

• Ensure the power rating is higher than the appliance you want to power.
• You should purchase a larger model (at least 10% to 20% more than the maximum load).
• If you want to run more than one appliance at the same time, refer to the total wattage.
• To run inductive loads for a long time, a pure sine wave inverter is recommended.

8. Troubleshooting

This section provides guidance for common issues. For complex problems, please contact customer support.

8.1 Common Faults and Solutions

• No Power Output: Check battery connections, ensure the inverter is switched on, verify AC input (if applicable), and check for any fault indicators on the LCD.
• Overload Warning: Reduce the connected load. The inverter has overload protection. Refer to specifications for maximum load capacity.
• High Temperature Warning: Ensure adequate ventilation around the inverter. Check for blocked vents and maintain recommended clearances (Figure 5.1).
• Battery Not Charging: Verify solar panel connections and output, check AC input, and ensure battery settings are correct.
• Inverter Not Switching On: Check the power switch and battery voltage. The cold start function allows the inverter to power on even without AC input, provided the battery has sufficient charge.

If a fault indicator is displayed, refer to the LCD Function Description (Figure 6.1) and LED Indicator Messages (Figure 6.2) for specific fault codes and their meanings.

9. Maintenance

• Regular Cleaning: Keep the inverter's vents and exterior clean from dust and debris to ensure proper heat dissipation. Use a dry cloth for cleaning.
• Connection Checks: Periodically inspect all wiring connections (battery, solar, AC input/output) to ensure they are secure and free from corrosion.
• Battery Health: Monitor battery voltage and performance. Follow battery manufacturer guidelines for maintenance.
• Firmware Updates: If available, check for and apply firmware updates via the WIFI monitoring app to ensure optimal performance and access to new features.
• Environmental Conditions: Ensure the inverter operates within the specified temperature and humidity ranges.

10. User Tips

• The inverter is designed to work with various appliances, including personal computers and typical home appliances.
• It is crucial to connect the inverter to a battery before connecting solar panels.
• When sizing your system, always choose an inverter model with a power rating higher than your intended load, ideally 10% to 20% more than the maximum load.
• If running multiple appliances simultaneously, calculate their combined wattage to ensure it stays within the inverter's capacity.
• The inverter is compatible with LiFePo4 batteries and can be connected to 12V or 24V battery systems depending on the model.
• Inverter parameters can be adjusted via the WIFI monitoring app.
• For any complex wiring or setup questions, it is advisable to contact customer service.

11. Warranty and Support

SUMRY provides a 1-year warranty for this product. For technical support, troubleshooting assistance, or warranty claims, please contact your seller or the official SUMRY customer service channels. Ensure you have your product model and serial number available when seeking support.