1. Introduction
This manual provides essential information for the safe and efficient operation of your SUDER VMS-V-6.2K-48-H Pure Sine Wave MPPT Solar Hybrid Inverter. Please read this manual thoroughly before installation and use, and keep it for future reference.

2. Safety Information
WARNING: This inverter generates high voltage. Improper installation or operation can result in serious injury or death. Always follow local electrical codes and consult with a qualified electrician for installation.
- Ensure the inverter is installed in a well-ventilated area, away from flammable materials.
- Do not expose the inverter to rain, snow, or liquids of any type.
- Do not disassemble the inverter. There are no user-serviceable parts inside.
- Ensure all connections are tight and correct before applying power.
- Always disconnect all power sources (AC, DC, and battery) before performing any maintenance or wiring.
- Wear appropriate personal protective equipment (PPE) when working with electrical systems.
3. Product Overview
3.1 Key Features

- Model: VMS-V-6.2K-48-H
- Type: On/Off Grid Solar Hybrid Inverter
- Output: Pure Sine Wave
- Rated Power: 6.2kW
- DC Voltage: 48VDC
- Charging: 120A MPPT Solar Charger + AC Charger
- Battery Compatibility: Compatible with AGM/SLA, Gel, LiFePO4/Lithium Flooded Batteries
- Monitoring: Built-in Wi-Fi transmitters for app-connected power generation monitoring
- Protection: Short Circuit Protection, Over Charge Protection, Over Current Protection
- Efficiency: Max Efficiency 98%
- Cooling: Dual fan design for efficient heat dissipation, Built-in anti-dust kit
- Operating Temperature: -10°C to 50°C
- Connectivity: RS485/RS232 communication port
- Output: Dual AC output
3.2 Component Identification

- LCD display
- Status indicator
- Charging indicator
- Fault indicator
- Function buttons (ESC, UP, DOWN, ENTER)
- Anti dust kit
- Power on/off switch
- AC input
- Main output
- Second output
- RS-232 communication port / Wifi-port
- Battery input
- PV input
4. Specifications
4.1 Line Mode Specifications

| Parameter | VMS-V-6.2K-48-H |
|---|---|
| Input Voltage Waveform | Sinusoidal (utility or generator) |
| Nominal Input Voltage | 230Vac |
| Low Loss Voltage | 170Vac±7V (UPS); 90Vac±7V (Appliances) |
| Low Loss Return Voltage | 180Vac±7V (UPS); 100Vac±7V (Appliances) |
| High Loss Voltage | 280Vac±7V |
| High Loss Return Voltage | 270Vac±7V |
| Max AC Input Voltage | 300Vac |
| Nominal Input Frequency | 50Hz / 60Hz (Auto detection) |
| Low Loss Frequency | 40±1Hz |
| Low Loss Return Frequency | 42±1Hz |
| High Loss Frequency | 65±1Hz |
| High Loss Return Frequency | 63±1Hz |
| Output Short Circuit Protection | Circuit Breaker |
| Efficiency (Line Mode) | >95% (Rated R load, battery full charged) |
| Transfer Time | 10ms typical (UPS); 20ms typical (Appliances) |
4.2 Inverter Mode Specifications

| Parameter | VMS-V-6.2K-48-H |
|---|---|
| Rated Output Power | 6.2KW |
| Output Voltage Waveform | Pure Sine Wave |
| Output Voltage Regulation | 230Vac±5% |
| Output Frequency | 50Hz |
| Peak Efficiency | 93% |
| Overload Protection | 3s@≥150% load; 5s@101%~150% load |
| Surge Capacity | 2* rated power for 5 seconds |
| Nominal DC Input Voltage | 48Vdc |
| Cold Start Voltage | 46.0Vdc |
| Low DC Warning Voltage (< 50% load) | 44.0Vdc |
| Low DC Warning Voltage (≥ 50% load) | 42.0Vdc |
| Low DC Cut-off Voltage (< 50% load) | 41.0Vdc |
| Low DC Cut-off Voltage (≥ 50% load) | 40.0Vdc |
| High DC Recovery Voltage | 62Vdc |
| High DC Cut-off Voltage | 63Vdc |
| No Load Power Consumption | 50W |
4.3 Two Load Output Power

| Parameter | VMS-V-6.2K-48-H |
|---|---|
| Full Load | 6200W |
| Maximum Main Load | 6200W |
| Maximum Second Load (battery model) | 2066W |
| Main Load Cut off Voltage | 52Vdc |
| Main Load Return Voltage | 54Vdc |
4.4 Charge Mode Specifications

| Parameter | VMS-V-6.2K-48-H |
|---|---|
| Utility Charging Mode | |
| Charging Algorithm | 3-Step |
| AC Charging Current (Max @V_AC=230Vac) | 100Amp |
| Bulk Charging Flooded Battery | 58.4 |
| Bulk Charging Gel Battery | 56.4 |
| Floating Charging Voltage | 54Vdc |
| MPPT Solar Charging Mode | |
| Max. PV Array Power | 6500W |
| Nominal PV Voltage | 360Vdc |
| PV Array MPPT Voltage Range | 60~450Vdc |
| Max. PV Array Open Circuit Voltage | 500Vdc |
| Max Charging Current (AC charger plus solar charger) | 120Amp |
4.5 Grid-Tie Operation

| Parameter | VMS-V-6.2K-48-H |
|---|---|
| Nominal Output Voltage | 220/230/240VAC |
| Feed-in Grid Voltage Range | 195~253Vac |
| Feed-in Grid Frequency Range | 49~51Hz/59~61Hz |
| Nominal Output Current | 26.9A |
| Power Factor Range | >0.99 |
| Maximum Conversion Efficiency (DC/AC) | 97% |
4.6 General Specifications

| Parameter | VMS-V-6.2K-48-H |
|---|---|
| Operating Temperature Range | -10°C to 50°C |
| Storage Temperature | -15°C~ 60°C |
| Humidity | 5% to 95% Relative Humidity (Non-condensing) |
| Dimension (D*W*H), mm | 120×344×440 |
| Net Weight, kg | 9.4 |


5. Installation and Setup
Proper installation is crucial for the performance and safety of your inverter. Refer to the following diagrams for connection guidance.
5.1 System Connection Diagram

5.2 Home Connection Diagram

5.3 Inverter & AC Charger Connection

Installation Steps (General Guidance):
- Mounting: Choose a suitable location for the inverter, ensuring adequate ventilation and protection from environmental elements.
- Battery Connection: Connect the battery bank to the inverter's battery input terminals (12) following the polarity markings.
- PV Input Connection: Connect the solar panel array to the PV input terminals (13), observing correct polarity and voltage limits.
- AC Input Connection: Connect the utility grid or generator AC input to the AC input terminals (8).
- AC Output Connection: Connect your household loads to the Main output (9) and Second output (10) terminals.
- Communication: Connect RS-232 or Wi-Fi module to port (11) for monitoring.
- Power On: Once all connections are secure, switch on the power on/off switch (7).
6. Operation
The inverter features an LCD display (1) and function buttons (5) for monitoring and configuration.
6.1 LCD Display and Indicators

- LCD Display (1): Shows real-time system status, input/output voltages, current, frequency, and error codes.
- Status Indicator (2): Indicates the operational status of the inverter.
- Charging Indicator (3): Shows the battery charging status.
- Fault Indicator (4): Illuminates when an error or fault occurs.
6.2 Function Buttons
Use the ESC, UP, DOWN, and ENTER buttons (5) to navigate through the LCD menu, view different parameters, and adjust settings as required.
6.3 Wi-Fi Monitoring
The built-in Wi-Fi allows for remote monitoring of your inverter's performance and power generation via a dedicated mobile application. Refer to the app's instructions for setup and usage.
7. Maintenance
Regular maintenance ensures the longevity and optimal performance of your inverter.
- Cleaning: Periodically clean the exterior of the inverter, especially the anti-dust kit (6) and fan vents, to ensure proper airflow and heat dissipation. Use a soft, dry cloth.
- Connections: Annually check all electrical connections for tightness and signs of corrosion.
- Environment: Ensure the installation environment remains within the specified temperature and humidity ranges.
- Battery Health: Monitor battery voltage and health regularly, especially if using lead-acid batteries.
WARNING: Always disconnect all power sources (AC, DC, and battery) before performing any cleaning or maintenance.
8. Troubleshooting
If the inverter is not operating as expected, check the following common issues before contacting support:
- No Power: Verify that the power on/off switch (7) is in the 'ON' position and all AC/DC inputs are connected and supplying power. Check battery voltage.
- Fault Indicator On: Refer to the inverter's LCD display for specific error codes. Common faults include overload, over-voltage, under-voltage, or short circuit.
- No Output: Check AC output connections and ensure no overload condition exists.
- Poor Performance: Ensure solar panels are clean and not shaded. Verify battery health and charging parameters.
For persistent issues, consult the detailed troubleshooting guide in the full product manual (if available) or contact customer support.
9. User Tips
To maximize the lifespan and efficiency of your inverter:
- Load Management: Do not connect equipment that exceeds the rated power of the inverter. Different electrical appliances have varying power requirements, even if their nominal power ratings appear similar. Always consider the surge capacity of your appliances.
- Consult for Specific Loads: If you are unsure about the power requirements of a specific appliance or its compatibility with the inverter, please consult customer service for detailed guidance.
- Regular Monitoring: Utilize the Wi-Fi monitoring feature to keep track of your system's performance and identify any potential issues early.
10. Warranty and Support
For warranty information, technical support, or service inquiries, please contact the seller or manufacturer directly. Keep your purchase records handy when contacting support.