1. Introduction
The MUST PV3500 TLV Series is a low frequency off-grid pure sine wave solar inverter. This multi-function inverter combines the capabilities of an inverter, an MPPT solar charger controller, and a battery charger. It is designed to provide uninterruptible power support in a portable size, suitable for various solar power system home applications.
2. Key Features
- Low Frequency Pure Sine Wave Inverter
- Integrated MPPT Solar Charger Controller (100A/200A options)
- Built-in Battery Charger
- Large LCD display for user-friendly operation and monitoring
- Clear battery information (Gel U.S.A, A.G.M. 1, A.G.M. 2, Sealed Lead Acid, Gel European) and charge/float voltages printed on the case for easy reference.
- Two large cooling fans for efficient heat dissipation, with speed controlled by temperature and load power.
- Comprehensive protection features including Overload Protection.
- Communication options: WIFI / RS485.
- Supports various battery types: Lead Acid, Lithium, Gel.
- Input Voltage: 220/230/240VAC
- Output Voltage: 110/120V
- Output Frequency: 50Hz/60Hz
- High Inverter Efficiency: 95%
3. Product Overview
3.1 Product Video
This video provides a visual overview of the PV3500 PRO series inverter, highlighting its design, display, cooling fans, and various connection ports.
3.2 Inverter Components
The inverter features a user-friendly design with a clear LCD display and accessible connection terminals. Below are images illustrating different views of the inverter.




3.3 Back Panel Description

The back panel of the inverter provides all necessary connection points and indicators for operation. Refer to the diagram above for the location of each component:
- Switch ON/OFF
- LCD display
- AC/Inverter indicator
- Charging indicator
- Fault indicator
- BAT- (Battery Negative Terminal)
- BAT+ (Battery Positive Terminal)
- USB communication port
- AC input/Bypass breaker
- AC output breaker
- Remote control port
- Fan
- BTS (Battery Temperature Sensor)
- AGS (Automatic Generator Start)
- AC input terminals
- AC output terminals
- Ground terminal
- PV input terminals
4. Installation & Connections
Proper installation and connection are crucial for the safe and efficient operation of your inverter. Always ensure the inverter is turned OFF before making any connections.
4.1 Battery Connection
Connect your battery bank to the BAT+ and BAT- terminals on the back panel. Ensure correct polarity (red for positive, black for negative). The inverter supports 48VDC battery systems. Use appropriate cable gauges for your battery bank capacity.
4.2 AC Input/Output Connections
Connect your AC input source (grid or generator) to the AC input terminals. Connect your AC loads to the AC output terminals. Ensure all connections are secure and protected by the integrated AC input/bypass and AC output breakers.
4.3 PV Input Connections
Connect your solar panel array to the PV input terminals. The inverter features an MPPT solar charger controller, so ensure your PV array voltage and current are within the specified limits (refer to specifications table).
4.4 Grounding
Connect the inverter to a reliable earth ground using the designated Ground terminal to ensure safety and prevent electrical hazards.
5. Operation
5.1 Powering On/Off
Use the ON/OFF switch on the back panel to power the inverter on or off. Ensure all connections are made before powering on.
5.2 LCD Display and Indicators
The large LCD display provides real-time information about the inverter's status, battery levels, and power flow. The AC/Inverter, Charging, and Fault indicators provide quick visual status updates.
5.3 Battery Information
The inverter's case includes printed information on various battery types (Gel U.S.A, A.G.M. 1, A.G.M. 2, Sealed Lead Acid, Gel European) and their corresponding charge and float voltages. This helps in selecting the correct battery settings for optimal performance and longevity.
6. Specifications
The following table details the technical specifications for the PV3500 TLV series inverters (PV35-8048 TLV, PV35-10048 TLV, PV35-12048 TLV models):

| Feature | PV35-8048 TLV | PV35-10048 TLV | PV35-12048 TLV |
|---|---|---|---|
| Nominal Battery System Voltage | 48V | ||
| INVERTER OUTPUT | |||
| Rated power | 8.0KW | 10.0KW | 12.0KW |
| Surge rating | 24000VA | 30000VA | 36000VA |
| Capable of starting electric motor | 4HP | 5HP | 6HP |
| Waveform | Pure sine wave / same as input (bypass mode) | ||
| Nominal output voltage RMS | 100V/110V/120V/200V/220V/240V | ||
| Output frequency | 50Hz / 60Hz ± 0.3Hz | ||
| Inverter efficiency (peak) | >95% | ||
| Line mode efficiency | >95% | ||
| Power factor | 1.0 | ||
| Typical transfer time | 20ms (max) | ||
| AC INPUT | |||
| Selectable voltage range | 90-280 VAC (APL) | ||
| Frequency range | 50Hz / 60Hz | ||
| BATTERY | |||
| Low battery voltage cutoff | 40-48VDC for 48VDC mode | ||
| Low battery voltage recover | 42-50VDC for 48VDC mode | ||
| High battery voltage cutoff | 60VDC for 48VDC mode | ||
| High battery voltage recover | 57VDC for 48VDC mode | ||
| Idle consumption-search mode | < 60W when power saver on | ||
| Output voltage | Depends on battery type | ||
| AC CHARGER | |||
| Overcharge protection S.D. | 31.4VDC for 24VDC mode / 62.8VDC for 48VDC mode | ||
| Maximum charge current | 60A | 70A | 80A |
| Continuous output power | Yes (Variances in charging voltage & S.D. voltage base on the battery temperature) | ||
| BYPASS | |||
| Input voltage waveform | Sine wave (grid or generator) | ||
| Nominal input frequency | 50Hz or 60Hz | ||
| Overload protection (SMPS Load) | Circuit breaker | ||
| Output short circuit protection | Circuit breaker | ||
| Bypass breaker rating | 63A | 63A | 63A |
| Max bypass current | 80Amp | ||
| SOLAR CHARGER | |||
| Maximum PV charge current | 100A | ||
| DC voltage | 48V | ||
| Maximum PV array power | 5000W (10000W for 200A optional) | ||
| MPPT range @ operating voltage (VDC) | 64-145VDC | ||
| Maximum PV array open circuit voltage | 145VDC | ||
| Maximum efficiency | >98% | ||
| Standby power consumption | <2W | ||
| MECHANICAL SPECIFICATIONS | |||
| Mounting | Wall mount | ||
| Dimensions (W*H*D) | 670*410*215mm | ||
| Net weight (Solar CHG) (kg) | 69 ± 2.5 | 75.75 ± 2.5 | 75.75 ± 2.5 |
| Shipping dimensions (W*H*D) | 884*618*443mm | ||
| Shipping Weight (Solar CHG) (kg) | 82.5 ± 2.5 | 89 ± 2.5 | 92 ± 2.5 |
| OTHER | |||
| Operation temperature range | 0°C to 40°C | ||
| Storage temperature | -15°C to 60°C | ||
| Audible noise | 60dB MAX | ||
| Display | LED + LCD | ||
| Loading (20GP/40GP/40HQ) | 140pcs / 280pcs / 320pcs | ||
The technical specifications of this document are subject to change without notice.
7. Maintenance
To ensure the longevity and optimal performance of your inverter, regular maintenance is recommended:
- Cooling Fans: The inverter is equipped with two large cooling fans. Ensure that the air vents are not obstructed to allow for proper airflow. Periodically check and clean the fans to prevent dust buildup, which can impair cooling efficiency.
- Connections: Periodically inspect all electrical connections (battery, AC input/output, PV input) to ensure they are tight and free from corrosion.
- Environment: Keep the inverter in a clean, dry, and well-ventilated area within the specified operating temperature range (0°C to 40°C).
8. Troubleshooting
If you encounter issues with your inverter, please refer to the following general troubleshooting steps. For complex problems, contact technical support.
- No Power: Check the ON/OFF switch, battery connections, and input AC/PV sources. Ensure breakers are not tripped.
- Fault Indicator On: Note the specific fault code on the LCD display (if available) and consult the full product manual for detailed error descriptions and solutions. Common faults include overload, short circuit, or battery issues.
- No Output: Verify that loads are correctly connected and within the inverter's capacity. Check AC output breaker.
9. Warranty & Support
The MUST PV3500 TLV Series Inverter comes with a 1-year warranty. For warranty claims, technical support, or any product-related inquiries, please contact your vendor or the manufacturer directly.
For immediate assistance, you may contact the sales team via WhatsApp: +86 13925760216.
10. Packaging & Logistics
To ensure the safety of your goods during transit, professional, environmentally friendly, convenient, and efficient packaging services are provided. Due to the heavy nature of these products, air or sea freight through a nominated freight forwarder is recommended. The product package dimensions are approximately 60cm (Length) x 40cm (Width) x 25cm (Height) with a weight of 30.0 kg.

