1. Introduction
This manual provides essential information for the safe and efficient operation of your SUNGOLDPOWER 18000W 48V Inverter Charger. Please read this manual thoroughly before installation and use, and retain it for future reference. The LF-PV Series Pure Sine Wave Inverter integrates an inverter, AC charger, and auto-transfer switch into a single system, offering advanced features for various power needs.
Figure 1: SUNGOLDPOWER 18000W 48V Inverter Charger. This image displays the inverter unit and its remote control, highlighting key specifications such as 18000W AC output, 95±5Amp AC battery charger, and 50Hz/60Hz output frequency.
2. Safety Information
Important Safety Instructions:
- Installation and maintenance must be performed by qualified personnel only.
- Ensure all wiring complies with local and national electrical codes.
- Disconnect all power sources (AC and DC) before performing any service or maintenance.
- Do not operate the inverter in wet conditions or near flammable materials.
- Verify correct battery voltage and polarity before connecting to the inverter.
- This inverter is not designed for grid-tied applications.
3. Product Components and Accessories
The SUNGOLDPOWER 18000W 48V Inverter Charger package includes the following items:
- SUNGOLDPOWER 18000W 48V Inverter Charger Unit
- Smart Remote Control
- User's Manual
- BTS Cable (Battery Temperature Sensor Cable)
- Protective Covers (Red and Black)
Figure 2: Product Size and Accessories. This image illustrates the dimensions of the inverter (16.5in x 28.7in x 8.7in, Net Weight: 197.1 lbs) and shows the included User's Manual, Remote Control, BTS Cable, and Protective Covers.
4. Specifications
| Feature | Specification |
|---|---|
| Brand | SUNGOLDPOWER |
| Model Name | 18000W 48V Solar Hybrid Inverter |
| Wattage | 18000 watts |
| Peak Output Power | 54000W (300% of continuous output for up to 20 seconds) |
| Input Voltage | 240 Volts AC |
| Output Voltage | 120V/240V Split Phase |
| Electrical Output Waveform | Pure Sine Wave |
| Frequency | 60 Hz |
| Inverter Capacity Volt-Amp | 18000 VA |
| AC Charger Current | Up to 120 Amp (adjustable 0-100%) |
| Transfer Time | 8 ms (Typical, between Utility & Battery) |
| Battery Type Selector | 8 pre-set types plus De-sulphation |
| Power Source | Battery Powered |
| Item Weight | 197 Pounds |
| Color | Blue |
| Built-In Media | Smart Remote Control |
| Energy Specifications Met | UL |
5. Setup and Installation
Proper installation is crucial for the safe and efficient operation of your inverter charger. Consult a qualified electrician for installation if you are not experienced with high-voltage electrical systems.
5.1 Wiring Diagram
The inverter supports various application wiring configurations, including solar charging, battery storage, and AC/grid charging, providing AC output to various appliances.
Figure 3: Application Wiring. This diagram illustrates how the inverter connects to an MPPT solar charger, battery storage, AC/Grid charging, and provides AC output to household appliances.
5.2 Initial Configuration
- Battery Connection: Connect the 48V battery bank to the inverter. Ensure correct polarity.
- AC Input Connection: Connect the 240V AC input source.
- AC Output Connection: Connect your 120V/240V split-phase loads to the inverter output.
- Battery Type Selection: Use the 8 pre-set battery type selector, including a de-sulphation option for flat batteries.
- Charge Current Adjustment: The maximum charge current can be adjusted from 0% to 100% via a linear switch. This is useful for matching the charger output to smaller capacity battery banks.
- AC Priority / Battery Priority: The inverter is designed with AC priority by default. When AC input is present, the battery charges first, and the inverter transfers the input AC to power the load. The AC Priority and Battery Priority switch (SW5) allows you to select battery priority, where the inverter will draw power from the battery even if AC input is available.
Figure 4: Battery Compatibility. This image displays the inverter's compatibility with various battery types, including GEL, LiFePO4, AGM, Lithium, Sealed Lead Acid, Open Lead Acid, and De-sulphation batteries.
6. Operating Instructions
Once installed and configured, the inverter charger operates largely automatically. Monitor the display for status information.
6.1 Display and Remote Control
The inverter features a large color screen for displaying operational parameters. A smart remote control is included for convenient monitoring and control.
Figure 5: Screen Upgrades. This image shows a close-up of the inverter's large color screen display, indicating inverter mode, grid voltage, battery voltage, and load percentage.
6.2 Key Operational Features
- Automatic Generator Starting (AGS): The inverter supports AGS, allowing for automatic startup of a connected generator when battery levels are low or load demand is high.
- Intelligent Battery Charging: Features 4-step intelligent battery charging for optimal battery health and longevity.
- Power Factor Correction (PFC): Integrated PFC for the charger improves efficiency.
- Seamless Transfer: An 8 ms typical transfer time between utility and battery ensures power continuity for connected loads.
- Load Protection: Includes a 15-second delay before transfer when AC resumes, providing protection for loads, especially when used with a generator.
Figure 6: Appliance Compatibility. This image demonstrates the inverter's ability to power a wide range of home and office appliances, supporting both split-phase and single-phase output.
7. Maintenance
Regular maintenance ensures the longevity and optimal performance of your inverter charger.
- Cleaning: Keep the inverter clean and free from dust and debris. Ensure ventilation openings are not blocked.
- Connection Checks: Periodically inspect all electrical connections for tightness and signs of corrosion.
- Battery Inspection: Check battery terminals for corrosion and ensure battery fluid levels (if applicable) are correct.
- Environmental Conditions: Ensure the inverter is operating within its specified temperature and humidity ranges.
8. Troubleshooting
If you encounter issues with your inverter charger, refer to the following general troubleshooting steps. For specific error codes or persistent problems, consult the detailed troubleshooting section in the full product manual or contact customer support.
- No Power Output: Check AC input, battery connections, and circuit breakers. Ensure the inverter is turned on.
- Overload Warning: Reduce the connected load. The inverter has a 300% overload capacity for up to 20 seconds, but sustained overloads will trigger protection.
- Battery Not Charging: Verify AC input is present and stable. Check battery connections and charge current settings.
- Unusual Noises: Ensure the inverter is properly mounted and that cooling fans are not obstructed.
9. Warranty and Support
The SUNGOLDPOWER 18000W 48V Inverter Charger comes with a 1-year warranty. For warranty claims, technical support, or further assistance, please contact SUNGOLDPOWER customer service. Many users have reported positive experiences with responsive and knowledgeable customer support.