1. Introduction
This manual provides comprehensive instructions for the ECTIVE SSI 20 Pure Sine Wave Inverter, a versatile device combining an inverter, MPPT solar charge controller, multi-stage battery charger, and UPS functionality. It converts 24V DC to 230V AC, suitable for various household appliances. Key features include efficient solar power utilization, advanced battery charging for multiple battery types, and seamless power switching between grid and battery sources.
Please read this manual thoroughly before installation and operation to ensure safe and efficient use of the device.
2. Safety Instructions
- Ensure all connections are secure and correctly polarized before powering on the device.
- Do not expose the inverter to water, moisture, or extreme temperatures.
- Ensure adequate ventilation around the inverter. Do not cover the fan openings.
- Only qualified personnel should perform installation and maintenance.
- Keep children away from the device.
- Disconnect all power sources before performing any service or cleaning.
3. Product Features
The ECTIVE SSI 20 is an advanced power solution designed for reliability and efficiency. It integrates multiple functionalities into a single unit:
- Pure Sine Wave Output: Converts 24V DC to high-quality 230V AC pure sine wave power, making it suitable for all types of sensitive electronic devices and appliances.
- High Power Capability: Provides a continuous output of 2000W, with a surge capacity of 3000W for 10 seconds and up to 4000W for 2 seconds, accommodating appliances with high startup currents.
- Integrated MPPT Solar Charge Controller: Maximizes power extraction from solar panels with over 97% efficiency, ensuring optimal battery charging from solar energy.
- Multi-Stage IUoU Battery Charger: An intelligent charger suitable for AGM, Gel, and LiFePo4 (with BMS) batteries, providing a maximum charging voltage of 14.4V.
- Network Priority Circuit (NVS) / UPS Function: Enables seamless switching to an external 230V power source when available, ensuring uninterrupted power supply to connected loads. The integrated charger simultaneously charges the batteries.
- Battery Priority Circuit (BVS) / ECO Mode: Ideal for off-grid or island operation. In ECO mode, consumers are primarily powered by the battery, even if grid power is available. The integrated charger is deactivated in this mode, allowing for exclusive use of solar or wind energy.
Image 3.1: Front view of the ECTIVE SSI 20 Pure Sine Wave Inverter, showcasing its robust design.
Image 3.2: The ECTIVE SSI 20 Inverter, highlighting the 3-year warranty.
4. Setup and Installation
Proper installation is crucial for the safe and efficient operation of your ECTIVE SSI 20 Inverter. Follow these general guidelines:
- Mounting: Choose a dry, well-ventilated location, away from direct sunlight and heat sources. Ensure sufficient clearance around the unit for airflow.
- Battery Connection: Connect the 24V battery bank to the DC input terminals (red for positive, black for negative) on the inverter. Ensure correct polarity and use appropriately sized cables.
- Solar Panel Connection: If using solar panels, connect them to the dedicated MPPT solar input terminals. Observe correct polarity and voltage limits.
- AC Output Connection: Connect your 230V AC appliances to the AC output socket on the inverter.
- AC Input Connection (for NVS/UPS): If using the NVS/UPS function, connect an external 230V AC power source (grid or generator) to the AC input terminals.
- Remote Control (Optional): If using the optional RC4 remote control, connect it to the designated remote port.
Image 4.1: Detailed view of the front and back panels, showing DC input, AC output, solar input, and AC input connections.
Image 4.2: System diagram illustrating how the inverter connects to a generator/grid, battery, and 230V consumers, with pure sine wave output.
5. Operation
Once installed, operating the ECTIVE SSI 20 is straightforward:
- Power On: Ensure all connections are secure. Switch the main power button to the 'ON' position. The inverter will perform a self-test.
- Mode Selection: Use the mode switch to select between different operating modes:
- UPS Mode (NVS - Network Priority Circuit): When an external 230V AC source is connected to the AC input, the inverter will prioritize this source to power loads. If the external source fails, it will automatically switch to battery power. The integrated charger will charge the batteries when the external AC source is present.
- ECO Mode (BVS - Battery Priority Circuit): In this mode, the inverter prioritizes battery power for connected loads. The integrated charger is deactivated. This mode is ideal for maximizing the use of solar or wind energy.
- Monitoring: The inverter may feature an LCD display or LED indicators to show operational status, battery voltage, output power, and charging status. Refer to the display for real-time information.
- Charging: The MPPT solar charge controller will automatically charge the batteries from connected solar panels. In UPS mode, the multi-stage battery charger will charge the batteries from the external AC source.
- Power Off: To shut down the system, disconnect all loads, then switch the main power button to 'OFF'.
6. 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 and fans are free from dust and debris. Do not use liquid cleaners.
- Connection Checks: Regularly inspect all electrical connections (DC input, AC output, solar input, AC input) for tightness and corrosion. Loose connections can lead to overheating and poor performance.
- Battery Health: Monitor your battery bank's health. Ensure batteries are properly maintained according to their manufacturer's guidelines.
- Environmental Conditions: Verify that the operating environment remains within the specified temperature and humidity ranges.
7. Troubleshooting
If you encounter issues with your ECTIVE SSI 20 Inverter, consider the following common troubleshooting steps:
- No Power Output:
- Check if the inverter is switched on.
- Verify DC input voltage from the battery. Ensure battery terminals are clean and connections are tight.
- Check for any tripped circuit breakers or blown fuses.
- Low Output Power / Overload Warning:
- Reduce the total load connected to the inverter. The inverter may be overloaded.
- Check battery voltage; low battery voltage can limit output power.
- Battery Not Charging:
- From Solar: Check solar panel connections, ensure panels are receiving adequate sunlight, and verify MPPT controller settings (if adjustable).
- From AC Input (UPS Mode): Ensure the external 230V AC source is connected and active. Check the mode selection; charging from AC input only occurs in UPS mode.
- Unusual Noises (e.g., loud fan):
- Ensure the inverter has adequate ventilation. Clear any obstructions from the fan.
- High loads or high ambient temperatures can cause the fan to run at full speed.
If problems persist after performing these checks, please contact ECTIVE customer support.
8. Specifications
The following table outlines the key technical specifications for the ECTIVE SSI 20 Inverter:
| Feature | Specification |
|---|---|
| Brand | ECTIVE |
| Model Number | SSI204 |
| Continuous Power | 2000 W |
| Peak Power (10s) | 3000 W |
| Peak Power (2s) | 4000 W |
| Input Voltage | 24 Volts DC |
| Output Voltage | 230 Volts AC |
| Output Waveform | Pure Sine Wave |
| MPPT Charge Controller | Integrated, >97% efficiency |
| Battery Charger | Multi-stage IUoU, max 14.4V |
| Power Source | Battery |
| Total Power Outlets | 1 |
| Item Weight | 14.33 pounds (approx. 6.5 kg) |
Image 8.1: Dimensional diagram of the ECTIVE SSI 20 Inverter (approx. 500mm length, 220mm width, 150mm height).
Image 8.2: Feature comparison table for ECTIVE inverter series, highlighting the SSI series capabilities.
9. Warranty and Support
ECTIVE offers a three-year manufacturer's warranty for its inverters, including the SSI 20. This warranty covers defects in materials and workmanship under normal use. For detailed warranty conditions, please refer to the official product documentation or contact ECTIVE customer service.
For technical support, warranty claims, or any questions regarding your ECTIVE SSI 20 Inverter, please contact ECTIVE customer support through their official website or the retailer where the product was purchased.
