1. Introduction
This manual provides essential information for the safe and efficient operation of your PowMr 12KW Hybrid Solar Inverter. This advanced inverter is designed for both on-grid and off-grid applications, featuring dual MPPT solar charge controllers, a 260A charger, and the capability to parallel up to 6 units for increased power output. It supports three-phase pure sine wave output and is compatible with various battery types.
2. Key Features
- Three-Phase Pure Sine Wave Output: Supports 350~415V output with adjustable phase voltage (200, 208, 220, 230, 240Vac).
- Dual MPPT Solar Charge Controllers: Two independent PV inputs with 99.9% efficiency, each handling up to 22A maximum input current, optimized for high-power modules.
- High Charging Current: Integrated MPPT charger with a maximum current of 260A.
- Parallel Capability: Can be paralleled with up to 6 units for expanded system capacity.
- Flexible Charging & Output Modes: Four charging modes (Solar Only, Mains Priority, Solar Priority, Mixed Mains and PV Charging) and two output modes (Utility Bypass, Inverter Output).
- Energy Management: Time period charging and discharging setting function to optimize energy usage and reduce costs, especially with peak and valley tariffs.
- Battery Compatibility: Supports both lead-acid and lithium-ion battery connections.
- Dual Activation Function: For dormant Li-ion batteries, activation can be triggered by mains or photovoltaic power supply access.
- Communication Interfaces: Supports CAN, USB, and RS485 communication.
- Comprehensive Protection: 360° protection including short-circuit, over-current, over-voltage, under-voltage, over-load, backfill, and over-temperature protection.
- User-Friendly Display: LCD large screen with dynamic flow diagram for easy monitoring of system data and operation status.
3. Setup and Installation
3.1 Physical Overview and Connections
The inverter features a robust design with clearly labeled connection points. Ensure all connections are secure before operation.
3.2 Wiring Instructions
Refer to the following video for a visual guide on wiring the inverter. Always ensure power is disconnected before making any electrical connections.
Key Connection Points:
- AC IN: Connect to the utility grid or generator.
- AC OUT: Connect to your household loads.
- BAT+ / BAT-: Connect to your battery bank (48V).
- PV1 / PV2: Connect to your solar PV arrays.
- Parallel Connection: Used for connecting multiple inverters in parallel.
- Communication Ports: USB, RS485, CAN, Dry Contact for monitoring and control.
- AC Input Breaker: Located on the side, ensures safety during installation and maintenance.
3.3 Parallel Connection
The inverter supports parallel operation of up to 6 units. A schematic diagram for parallel connection is provided below. Ensure all units are correctly configured for parallel operation according to the detailed instructions in the full user manual.
4. Operation
4.1 LCD Display and Navigation
The inverter features an LCD display with navigation buttons (Up, Down, Enter) to view system status and configure settings. The dynamic flow diagram provides an intuitive overview of energy flow.
4.2 Charging Modes
The inverter offers four selectable charging modes:
- Solar Only: Prioritizes solar power for charging batteries.
- Mains Priority: Prioritizes utility grid power for charging batteries.
- Solar Priority: Uses solar power first, then utility grid if solar is insufficient.
- Mixed Mains and PV Charging: Combines solar and utility power for charging.
4.3 Load Output Working Modes
Three load output working modes are available:
- Utility First: Prioritizes utility grid power for loads.
- Solar First: Prioritizes solar power for loads.
- SBU First (Solar-Battery-Utility): Prioritizes solar, then battery, then utility for loads.
4.4 Energy-Saving Mode and Time-Slot Settings
The energy-saving mode reduces no-load energy losses. Utilize the time-slot charging and discharging function to take advantage of varying electricity tariffs. This allows you to store excess solar energy during off-peak hours and discharge it during peak demand, reducing electricity costs.
4.5 Dual Activation Function for Li-ion Batteries
When a lithium-ion battery is in a dormant state, it can be activated by connecting either the mains power supply or the photovoltaic power supply to the inverter.
5. Maintenance
Regular maintenance ensures the longevity and optimal performance of your inverter.
- Cleaning: Keep the inverter's exterior clean and free from dust and debris. Use a dry, soft cloth. Do not use liquid cleaners.
- Connection Checks: Periodically inspect all electrical connections (AC IN, AC OUT, Battery, PV) for tightness and signs of corrosion.
- Ventilation: Ensure the inverter's ventilation openings are clear and unobstructed to prevent overheating. The inverter uses air cooling.
- Environmental Conditions: The inverter is rated IP20 (indoor use only). Operate within the specified ambient temperature range of -10°C to 55°C. Derating may occur above 45°C.
6. Troubleshooting
The PowMr Hybrid Solar Inverter incorporates 360° protection features to safeguard against various issues. If you encounter a problem, check the following common areas:
- No Power/Display Off: Verify AC input, battery connections, and the AC input breaker.
- Overload Protection: If the inverter shuts down due to overload, reduce the connected load. The inverter will attempt to resume output after a delay.
- Short Circuit: Check for short circuits in the AC output wiring.
- Over-Current/Over-Voltage/Under-Voltage: These protections will activate if input/output parameters exceed safe limits. Check your power sources and loads.
- Over-Temperature: Ensure adequate ventilation and that the ambient temperature is within the operating range.
- Battery Issues: Check battery voltage and connections. For Li-ion batteries, ensure they are activated.
For persistent issues, consult the detailed troubleshooting section in the complete user manual or contact technical support.
7. Specifications
Below are the general specifications for the PowMr 12KW Hybrid Solar Inverter. Specific values may vary slightly between models (POW-SunSmart 8KL3, POW-SunSmart 10KL3, POW-SunSmart 12KL3).
| Feature | Specification |
|---|---|
| Brand Name | PowMr |
| Model Number | POW-SunSmart 8KL3/POW-SunSmart 12KL3 |
| Rated Output Power | 12KW |
| Max PV Input Power | 9KW |
| Max PV Input Voltage | 200V-800V |
| Max Charge Current | 260A |
| Battery Voltage | 48V |
| Compatible Battery Types | Lead Acid, Lithium Batteries |
| Output Type | Triple Phase |
| Output Frequency | 50HZ/60HZ |
| Dimensions (L*W*H) | 620*445*130mm |
| Weight | 30KG |
| Protection Degree | IP20 (Indoor only) |
| MPPT Tracking Efficiency | 99.9% |
| European Efficiency | 97.5% |
| Communication | RS485, CAN, USB, Dry contact (Wi-Fi/GPRS optional) |
| Certification | CE |
8. User Tips
- Battery Compatibility: The inverter is compatible with both lead-acid and lithium-ion (LiFePo) batteries. Ensure your battery system is 48V.
- Natrium Ion Batteries: While the inverter supports various battery types, specific compatibility with Natrium ion batteries should be verified with the manufacturer or your supplier, as these are newer technologies.
- System Autonomy: The duration your system can run without solar input (e.g., overnight or during cloudy days) depends heavily on your battery bank's capacity and your average power consumption. Proper sizing of your battery bank is crucial for desired autonomy.
9. Warranty and Support
The PowMr 12KW Hybrid Solar Inverter comes with a 1-year warranty. For technical assistance, warranty claims, or further inquiries, please contact your authorized dealer or the manufacturer directly. Ensure you have your product model number and purchase details available when seeking support.
