1. Introduction
The PowMr POW-HVM2H-12V-N is a versatile multi-function inverter/charger designed for solar energy storage systems. It integrates the functions of a power inverter, a solar charger, and a battery charger into a compact unit, providing reliable and uninterruptible power support. This device can charge batteries using both solar energy and AC power sources, and it supports bypass output to ensure continuous and stable power supply to your loads.
The inverter features a comprehensive LCD display that allows for user-configurable settings, including battery charging current, AC/solar charger priority, and acceptable input voltage ranges, adapting to various application needs.
Figure 1: Front view of the PowMr 2KW Hybrid Solar Inverter.
Video 1: PowMr 2KW Hybrid Solar Inverter Product Overview. This video demonstrates the physical aspects and basic functionalities of the inverter.
2. Key Features
- Pure sine wave output for compatibility with various sensitive electronics.
- Configurable input voltage range for home appliances and personal computers via LCD settings.
- Adjustable battery charging current based on application requirements via LCD settings.
- Configurable AC/Solar Charger priority via LCD settings.
- Compatible with both mains utility voltage and generator power.
- Automatic restart function when AC power recovers.
- Integrated protection against overload, over-temperature, and short circuits.
- Smart battery charger design for optimized battery performance and longevity.
- Cold start function for operation in low-temperature environments.
- Optional WIFI/GPRS module for remote monitoring (module not included).
- Compatible with various battery types, including lithium-ion and lead-acid batteries.
3. Setup and Installation
Proper installation is crucial for the safe and efficient operation of your hybrid solar inverter. Ensure all connections are secure and follow local electrical codes.
3.1 System Overview
The inverter is designed to integrate solar power, utility/generator power, and battery storage to supply electricity to your home appliances. The diagram below illustrates a typical hybrid power system setup.
Figure 2: Hybrid Power System Diagram. This diagram shows how solar panels, a generator or utility grid, and a battery bank connect to the inverter to power household loads.
3.2 Physical Connections
Identify the connection points on the rear panel of the inverter for AC input, AC output, battery terminals, and PV input. Ensure proper polarity for DC connections (PV and Battery) and secure AC wiring.
Figure 3: Rear panel connections. Note the AC IN, AC OUT, Battery (+/-), PV IN (+/-) terminals, and the grounding point.
3.3 Battery Compatibility
The inverter supports a wide range of 12V battery types. Select the appropriate battery type in the LCD settings for optimal charging and discharge performance.
Figure 4: Compatible Battery Types. The inverter supports LiFePO4, AGM, Lithium, Flooded, Sealed Lead Acid, and Gel batteries.
4. Operating Instructions
The inverter's LCD display and buttons allow you to configure various operating parameters.
4.1 Power Source Priority Settings
You can configure the inverter to prioritize different power sources (solar, utility, battery) based on your energy needs. Common modes include:
- Only Solar: Prioritizes solar power for loads.
- Mains First: Prioritizes utility grid power, using solar/battery as backup.
- Solar First: Prioritizes solar power, using utility/battery as backup.
- Mains & Solar: Combines utility and solar power.
Figure 5: Power Source Priority Modes. Select the mode that best suits your energy consumption and generation patterns.
4.2 Remote Monitoring (Optional)
The inverter is designed to be compatible with an optional WiFi module for real-time performance monitoring and parameter changes via a mobile application. The WiFi module is not included in the standard package and must be purchased separately.
Figure 6: WiFi Monitoring Capability. An optional WiFi module connects to the COMM port for remote system monitoring.
Figure 7: COMM Port for WiFi Module. This port is used to connect the optional WiFi monitoring device.
5. Maintenance
Regular maintenance helps ensure the longevity and optimal performance of your PowMr Hybrid Solar Inverter.
- Keep the inverter clean and free from dust and debris. Ensure ventilation openings are not blocked.
- Periodically check all electrical connections for tightness and signs of corrosion.
- Inspect cables for any damage or wear.
- Ensure the inverter is installed in a well-ventilated area, away from direct sunlight and moisture.
- Monitor the LCD display for any error codes or warnings and consult the troubleshooting section if issues arise.
6. Troubleshooting
If you encounter issues with your inverter, refer to the following general troubleshooting steps. For specific error codes, consult the full product manual (if available) or contact customer support.
- No Power Output: Check AC input and output connections, battery connections, and PV input. Ensure the inverter is turned on. Verify battery voltage is within operating range.
- Inverter Overload: Reduce the load connected to the inverter. Check for short circuits in the load. The inverter has overload protection and may shut down automatically.
- Battery Not Charging: Verify solar panel connections and output. Check AC input if charging from utility. Ensure battery type settings are correct on the LCD.
- High Temperature Warning: Ensure adequate ventilation around the inverter. Clear any obstructions from cooling fans. Reduce ambient temperature if possible.
- Unusual Noises: If the inverter makes unusual noises, immediately disconnect all power sources (AC, PV, Battery) and contact customer support.
7. Specifications
Technical specifications for the PowMr POW-HVM2H-12V-N Hybrid Solar Inverter.
Figure 8: Product Dimensions and Core Features.
| Feature | Specification (POW-HVM2H-12V-N) |
|---|---|
| Rated Output Power | 2000VA/1600W |
| Output Voltage Waveform | Pure Sine Wave |
| Output Voltage Regulation | 230Vac±5% |
| Nominal Input Voltage | 230Vac |
| Nominal Input Frequency | 50Hz/60Hz (Auto-detection) |
| Max AC Input Voltage | 300Vac |
| Low Loss Voltage (UPS) | 170Vac±7V |
| Low Loss Voltage (Appliances) | 90Vac±7V |
| High Loss Voltage | 280Vac±7V |
| Output Short Circuit Protection | Circuit Breaker |
| Efficiency (Line Mode) | >95% (Rated R load, battery full charged) |
| Transfer Time (UPS) | 10ms typical |
| Transfer Time (Appliances) | 20ms typical |
| Nominal DC Input Voltage | 12Vdc |
| Cold Start Voltage | 11.5Vdc |
| Max. PV Array Power | 2000W |
| Nominal PV Voltage | 240Vdc |
| PV Array MPPT Voltage Range | 30~400Vdc |
| Max. PV Array Open Circuit Voltage | 400Vdc |
| Max Charging Current (AC charger+solar charger) | 80Amp |
| Charging Algorithm | 3-Step |
| AC Charging Current (Max) | 60 Amp |
| Bulk Charging Voltage (Flooded Battery) | 14.6Vdc |
| Bulk Charging Voltage (AGM / Gel Battery) | 14.1Vdc |
| Floating Charging Voltage | 13.5Vdc |
| Low DC Warning Voltage (< 50% load) | 11.0Vdc |
| Low DC Warning Voltage (> 50% load) | 10.5Vdc |
| Low DC Warning Return Voltage (< 50% load) | 11.5Vdc |
| Low DC Warning Return Voltage (> 50% load) | 11.0Vdc |
| Low DC Cut-off Voltage (< 50% load) | 10.2Vdc |
| Low DC Cut-off Voltage (> 50% load) | 9.6Vdc |
| High DC Recovery Voltage | 14.0Vdc |
| High DC Cut-off Voltage | 16.0Vdc |
| No Load Power Consumption | <25W |
| Operating Temperature Range | -10°C to 50°C |
| Storage Temperature | -15°C to 60°C |
| Humidity | 5% to 95% Relative Humidity (Non-condensing) |
| Dimensions (L*W*H) | 348*270*95mm (approx. 13.7*10.6*3.7 inches) |
| Weight | 5.8kg (approx. 12.8 lbs) |
| Certification | CE |
Figure 9: CE Certificate of Conformity.
Figure 10: Product Rating Plate.
8. User Tips
- Battery-Less Operation: While primarily designed for systems with batteries, this hybrid inverter may support operation directly from solar panels and/or the grid without a battery bank, depending on the specific configuration and load requirements. Consult the detailed wiring diagrams and settings in the comprehensive manual for battery-less setup options.
- System Sizing: When planning your solar power system, ensure that your solar panels and battery bank are appropriately sized for the inverter's specifications (e.g., Max. PV Array Power, Max. PV Array Open Circuit Voltage, Max Charging Current) to prevent damage and ensure optimal performance.
- Pure Sine Wave Output: The inverter provides a pure sine wave output, making it suitable for sensitive electronic devices that require a stable and clean power supply.
- Placement: The inverter can be placed in any suitable location where a PV panel system is installed, provided it meets the environmental requirements (temperature, humidity, ventilation) outlined in the specifications.
9. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the contact details provided with your purchase documentation or visit the official PowMr website. Keep your purchase receipt as proof of purchase for any warranty claims.
