1. Introduction
The ECGSOLAX 3.6KW Hybrid Solar Inverter is a versatile multi-function inverter/charger designed to provide uninterruptible power support. It integrates the functions of an inverter, a solar charger, and a battery charger into a compact unit. The device features a comprehensive LCD display and user-friendly buttons, allowing for configurable settings such as battery charging current, AC/solar charger priority, and acceptable input voltage to suit various applications.
2. Key Features
- Pure sine wave output for sensitive electronics.
- Dual AC inputs and dual AC outputs for flexible power management.
- Configurable input voltage range for compatibility with home appliances and personal computers via LCD settings.
- Adjustable battery charging current based on application requirements via LCD settings.
- Configurable AC/Solar Charger priority via LCD settings.
- Compatible with both mains voltage and generator power sources.
- Automatic restart function upon AC recovery.
- Integrated protection against overload, over-temperature, and short circuits.
- Smart battery charger design to optimize battery performance and lifespan.
- Cold start function for reliable operation in various conditions.
- Optional WiFi module available for remote monitoring via a dedicated application.
3. Specifications
| Parameter | Value |
|---|---|
| Model Number | ECO-LV 3.6K |
| Rated Output Power | 3.6KVA / 3.6KW |
| Battery Voltage | 24VDC |
| Battery Type | Lead-acid battery and lithium battery |
| Nominal Input Voltage | 110/105/110/115/120VAC |
| Nominal Input Frequency | 50Hz / 60Hz (Auto detection) |
| Efficiency | >95% (Rated R load, battery full charged) |
| Output Voltage Waveform | Pure Sine Wave |
| Floating Charging Voltage | 27VDC |
| Charging Algorithm | 3-Step |
| Max. PV Array Power | 4200W |
| Max. PV Current | 16A |
| Nominal PV Voltage | 240VDC |
| Start-up Voltage | 60VDC ± 10VDC |
| PV Array MPPT Voltage Range | 60VDC~500VDC |
| Max. PV Array Open Circuit Voltage | 500VDC |
| Max Charging Current | 120Amp |
| Safety Certification | CE |
| Operating Temperature Range | -10°C to 55°C |
| Storage temperature | -15°C ~ 60°C |
| Humidity | 5% to 95% Relative Humidity (Non-condensing) |
| Dimension (D*W*H) | 423x334x110 mm |
| Net Weight | 9 kg |
| Output Type | SINGLE |
| Is Smart Device | Yes (Optional WiFi) |
| Origin | Mainland China |
4. Setup Instructions
4.1 System Connection
The inverter is designed for integration into a comprehensive solar power system. Ensure all connections are secure and follow local electrical codes.
The diagram illustrates the connection points for:
- Solar Power: Connect your solar PV array to the designated PV input. Max. PV Array MPPT Voltage Range: 60~500VDC. Max. PV Array Power: 4200W.
- Generator or Utility: Connect either a generator or the utility grid as an alternative power source.
- Battery: Connect a 24V lithium or lead-acid battery bank. The inverter supports various battery types including GEL, FLD, LI-ion, and user-defined (USE). Max Charging current (AC charger + solar charger) is 120A.
- Home Appliances: Connect your household appliances to the inverter's output. The inverter provides a single-phase 110V output at 3.6KW.
4.2 Port Introduction
Familiarize yourself with the inverter's ports and indicators:
- LCD display: Shows system data and operating status.
- Status indicator: LED indicator for operational status.
- Charging indicator: LED indicator for charging status.
- Fault indicator: LED indicator for system faults.
- Function buttons: For user configuration and navigation.
- AC input: Connection for AC power source (utility or generator).
- Main output: Primary AC output for connected loads.
- Second output: Secondary AC output for connected loads.
- Battery communication / RS-485 port: For communication with compatible battery management systems.
- WIFI communication / RS-232 port: For optional WiFi module or serial communication.
- Battery input: Connection terminals for the battery bank.
- PV input: Connection terminals for the solar PV array.
4.3 PV Module Selection Guidelines
When selecting and connecting PV modules, observe the following:
- The Open Circuit Voltage (Voc) of the PV modules must not exceed the maximum PV array open circuit voltage of the charger (500VDC).
- The Open Circuit Voltage (Voc) of the PV modules should be higher than 60V for proper operation.
- When operating the inverter without batteries, the starting voltage of the PV input should be at least 120V.
4.4 Battery Connection
The inverter supports various 24V battery types. Ensure correct polarity when connecting batteries.
The inverter offers seamless multi-battery connectivity and can even operate without batteries under specific conditions (refer to PV module selection guidelines). For Lithium batteries, BMS communication (e.g., PylonTech) is supported.
5. Operating Instructions
5.1 LCD Display and Indicators
The LCD display provides real-time system data and operational status. Use the function buttons to navigate through menus and configure settings. LED indicators provide quick visual feedback on the inverter's status (e.g., power, charging, fault).
5.2 Charging Modes
The inverter supports four distinct charging modes to optimize energy utilization:
- CSO Solar First: Prioritizes solar power for charging.
- Utility First: Prioritizes utility power for charging.
- SNU Solar and Utility (Default): Uses both solar and utility power for charging, with solar as the primary source.
- OSO Only Solar: Charges batteries exclusively from solar power.
5.3 Discharge Modes
The inverter offers three discharge modes to manage power delivery to loads:
- SUB Solar First (Default): Prioritizes solar power to supply loads.
- USB Utility First: Prioritizes utility power to supply loads.
- SBU Priority: Prioritizes solar, then battery, then utility for loads.
5.4 Dual Load Output Power
The inverter features dual AC outputs (Main Out and Second Out) for managing different loads.
The main output port will cease operation if the battery voltage drops below a user-configurable set range (typically 20V - 23V). In such a scenario, only the second output port will continue to function, allowing for prioritization of critical loads.
6. Maintenance
Regular maintenance ensures optimal performance and longevity of your inverter. Perform the following checks periodically:
- Cleaning: Keep the inverter's exterior clean and free from dust and debris. Ensure ventilation openings are unobstructed to prevent overheating.
- Connection Checks: Periodically inspect all electrical connections (PV, battery, AC input/output) for tightness and signs of corrosion. Loose connections can lead to poor performance or safety hazards.
- Battery Health: Monitor battery voltage and performance. For lead-acid batteries, check electrolyte levels if applicable. Ensure lithium batteries are communicating correctly with the BMS.
- Environmental Conditions: Ensure the inverter is operating within its specified temperature and humidity ranges. Avoid exposing it to direct sunlight or excessive moisture.
- Firmware Updates: If using the optional WiFi module, check for available firmware updates to ensure the inverter has the latest features and bug fixes.
7. Troubleshooting
If you encounter issues with your inverter, refer to the fault indicator and LCD display for error codes or messages. The inverter includes several protection features:
- Overload Protection: If the connected load exceeds the inverter's capacity, it will shut down to prevent damage. Reduce the load and restart the inverter.
- Over Temperature Protection: If the internal temperature becomes too high, the inverter will shut down. Ensure proper ventilation and clear any obstructions.
- Short Circuit Protection: In case of a short circuit at the output, the inverter will immediately shut down. Identify and resolve the short circuit before restarting.
- Over/Under Voltage Protection: The inverter will protect itself and connected devices from input voltage fluctuations outside the acceptable range.
For persistent issues or specific error codes not covered here, please consult the detailed troubleshooting section in the full product manual or contact customer support.
8. User Tips
- Optimize Settings: Take time to understand and configure the charging and discharge priorities (Solar First, Utility First, SBU Priority) via the LCD settings to best suit your energy consumption patterns and maximize savings.
- Monitor Performance: Regularly check the LCD display for system data. If you have the optional WiFi module, use the remote monitoring app to keep track of your system's performance and identify any potential issues early.
- Battery Management: Proper battery selection and management are crucial. Ensure your battery type is correctly configured in the inverter settings for optimal charging and discharge cycles.
9. Warranty and Support
The ECGSOLAX 3.6KW Hybrid Solar Inverter is CE certified, indicating compliance with European safety, health, and environmental protection requirements.
For specific warranty terms, technical support, or service inquiries, please refer to the documentation provided with your purchase or contact ECGSOLAX customer service directly. Ensure you have your product model number (ECO-LV 3.6K) and purchase details ready when seeking support.