1. Introduction
This manual provides essential information for the safe and efficient operation of your PowMr Hybrid Solar Inverter. The PowMr HVM series are multi-functional inverters/chargers, combining functions of inverter, solar charger, and battery charger to offer uninterruptible power support in a portable size. Their comprehensive LCD display allows user-configurable and easy-accessible button operation such as battery charging current, AC/solar charger priority, and acceptable input voltage based on different applications.
The inverters are available in various power ratings and battery voltages:
- POW-HVM6.2M-48V-N: 6.2KW, 48V
- POW-HVM4.2M-24V-N: 4.2KW, 24V
- POW-HVM3.2H-24V-N: 3.2KW, 24V
- POW-HVM2H-12V-N: 2KW, 12V
Key features include pure sine wave output, configurable input voltage range, configurable battery charging current, configurable AC/Solar charger priority, compatibility with mains voltage or generator power, auto restart while AC is recovering, comprehensive protection systems, smart battery charger design, and cold start function. Some models also support BMS WIFI for remote monitoring.
2. Safety Instructions
Please read all instructions and cautionary markings on the unit and in this manual before installation and operation. This device contains high voltage. Only qualified personnel should perform installation and maintenance.
- Ensure proper grounding of the inverter.
- Do not disassemble the unit. Refer servicing to qualified personnel.
- Disconnect all power sources before performing any wiring or maintenance.
- Use appropriate personal protective equipment (PPE) during installation.
- Ensure adequate ventilation around the inverter to prevent overheating.
- Do not expose the inverter to rain, snow, spray, or any type of liquid.
3. Setup
3.1 Unpacking and Inspection
Before installation, inspect the unit. Be sure that nothing inside the package is damaged. You should have received the following items:
- Hybrid Solar Inverter Unit
- User Manual
- Communication Cable (if applicable)
- Software CD (if applicable)
3.2 Physical Installation
The inverter is designed for indoor use. Mount the inverter vertically on a wall or other suitable surface. Ensure the mounting location is:
- Well-ventilated and free from excessive dust.
- Protected from direct sunlight, heat, and moisture.
- Strong enough to support the inverter's weight (approx. 10KG).
- Allow sufficient clearance (at least 20 cm) around the unit for heat dissipation.
3.3 Wiring Connections
All wiring must comply with local and national electrical codes. It is highly recommended that a qualified electrician performs the installation.
- Battery Connection: Connect the battery bank to the inverter's battery terminals. Ensure correct polarity. The inverter supports 12V, 24V, or 48V battery systems depending on the model. Compatible battery types include LiFePO4, AGM, Lithium, Flooded, Sealed Lead Acid, and Gel Batteries.
- AC Input Connection (Utility/Generator): Connect the AC input from the utility grid or a generator to the inverter's AC input terminals.
- PV Input Connection (Solar Panels): Connect the solar panel array to the inverter's PV input terminals. Observe the maximum PV input voltage (up to 500V DC) and MPPT voltage range (e.g., 30-400Vdc for 2KW model).
- AC Output Connection (Load): Connect your household appliances or AC loads to the inverter's AC output terminals.
- Grounding: Ensure the inverter is properly grounded to prevent electrical shock.
4. Operating Instructions
4.1 LCD Display and Control Panel
The inverter features an LCD display and several function buttons (ESC, UP, DOWN, ENTER) for monitoring and configuration. LED indicators provide quick status updates.
4.2 Charging Modes
The inverter offers multiple configurable charging modes to optimize battery charging based on available power sources:
- Solar Charging: Prioritizes solar power for battery charging.
- Utility/AC Power Charge Battery First: Prioritizes AC utility or generator power for battery charging.
- Solar Power Charge Battery First: Prioritizes solar power for battery charging, using utility/AC only when solar is insufficient.
- Solar + Utility Charge Battery at the Same Time: Utilizes both solar and utility/AC power simultaneously for faster charging.
- Only Solar Charge Battery: Exclusively uses solar power for charging, ignoring utility/AC.
- Hybrid Charging: A combination mode, often prioritizing solar and supplementing with utility/AC as needed.
4.3 Output Priority Modes
You can configure the inverter's output priority to determine which power source supplies the load first:
- Utility Source Power Load as First Priority: The load is primarily powered by the utility grid.
- Solar Power Load First: The load is primarily powered by solar energy.
- Solar + Battery Power Load at the Same Time: The load is powered by a combination of solar and battery power.
- PV Priority: Prioritizes solar power for the load.
- Utility Priority: Prioritizes utility power for the load.
- Inverter Mode (SBU Mode): Typically prioritizes Solar, then Battery, then Utility.
4.4 LED Indicators
The inverter's logo light changes color to indicate its current working mode:
- Stationary Mode: No light (or specific color for idle).
- PV Mode: Purple Light (indicating solar power is active).
- Utility Mode: Blue Light (indicating utility grid power is active).
- Battery Mode: Red Light (indicating battery power is active).
4.5 Remote Monitoring (Optional)
For remote monitoring and control, an optional WiFi module can be purchased separately. Once installed, you can use the "SMARTESS" app, available on the App Store and Google Play, to monitor your inverter's performance and status.
5. Maintenance
Regular maintenance ensures the longevity and optimal performance of your inverter.
- Cleaning: Periodically clean the inverter's exterior with a dry cloth. Ensure ventilation openings are free from dust and debris.
- Connections: Annually check all electrical connections for tightness and corrosion. Loose connections can cause overheating and damage.
- Battery Inspection: Regularly inspect your battery bank for any signs of damage, corrosion, or leakage. Ensure battery terminals are clean and tight.
- Environment: Verify that the installation environment remains within the recommended temperature and humidity ranges.
6. Troubleshooting
The inverter is equipped with intelligent protection systems to safeguard itself and connected devices. If an issue occurs, the inverter may display an error code or activate a protection mode. Refer to the LCD display for specific error messages.
6.1 Intelligent Protection Systems
The inverter incorporates 15 intelligent protection modes:
- Charge Low Temperature Protection
- Charge High Temperature Protection
- Discharge Low Temperature Protection
- Discharge High Temperature Protection
- Overcurrent Protection
- Charging Overcurrent Protection
- Charging Undervoltage Protection
- Short-circuit Protection
- Solar Panel Reverse Connection Protection
- Battery Overvoltage Protection
- Over Temperature Protection
- Overload Protection
- Under Voltage Protection
- Backfill Protection
- Over Charge Protection
If any of these protections are triggered, the inverter will typically shut down or enter a safe mode. Consult the manual's detailed troubleshooting section (if available in the full PDF manual) for specific actions based on the error code.
7. Specifications
| Feature | Specification |
|---|---|
| Brand Name | PowMr |
| Model Numbers | POW-HVM6.2M-48V-N, POW-HVM4.2M-24V-N, POW-HVM3.2H-24V-N, POW-HVM2H-12V-N |
| Output Type | DUAL (Pure Sine Wave) |
| Output Voltage | 220-240V AC |
| Output Frequency | 50Hz |
| Output Power (Max. AC Power) | 6.2KW (POW-HVM6.2M-48V-N), 4.2KW (POW-HVM4.2M-24V-N), 3.2KW (POW-HVM3.2H-24V-N), 1.6KW (POW-HVM2H-12V-N) |
| Max. PV Input Voltage | 500V DC |
| PV Array MPPT Voltage Range | 30-400Vdc (for 2KW model), 90-450Vdc (for 6.2KW model) |
| Max. PV Array Power | 2000W (for 2KW model), 6500W (for 6.2KW model) |
| Max. Charge Current (MPPT) | 120A |
| Max. AC Charging Current | 80A (for 3.2KW/2KW models), 120A (for 4.2KW/6.2KW models) |
| Battery Voltage | 12V (2KW), 24V (3.2KW, 4.2KW), 48V (6.2KW) |
| Starting Voltage | 60VDC (2KW), 120V (3.2KW), 150V (4.2KW, 6.2KW) |
| No-load Power Consumption | 35W |
| Size | 50*40*18CM (approximate package size) |
| Weight | 10KG (approximate package weight) |
| Is Smart Device | Yes (with optional WiFi module) |
| Certification | CE, RoHS |
8. User Tips
- Battery Compatibility: Always ensure your battery bank voltage matches the inverter model (e.g., 24V for 4.2KW/3.2KW models, 48V for 6.2KW model).
- 110V Output: If your region uses 110V AC, remember that these inverters are single-phase 220V. You will need an external transformer for 110V output.
- WiFi Module: For remote monitoring, the WiFi module is an optional purchase. Consider adding it for enhanced system management.
- Cable Sizing: Pay close attention to the recommended cable gauges and torque values in the wiring diagrams to ensure safe and efficient operation.
- Ventilation: Good airflow is critical for inverter performance and longevity. Ensure the installation area is well-ventilated and free from obstructions.
9. Warranty and Support
The PowMr Hybrid Solar Inverter comes with a 2-year warranty. For technical support, troubleshooting assistance, or warranty claims, please contact your seller or PowMr customer service. Keep your purchase receipt and product serial number handy when contacting support.
