Detailed Product Description
The UNITED ENERGY SEI-SP Series represents the next generation of solar storage inverters, combining German engineering with smart energy management. Our 4KW-6KW models deliver exceptional performance whether you're powering a family home or commercial facility.
Why Choose Our Solar Inverter?
- Intelligent Energy Management 🤖
With exclusive Li-ion battery BMS dual activation and time-slot functionality, automatically shift between solar, battery, and grid power to maximize savings. The built-in peak-valley charging can reduce your electricity bills by up to 30%. - Unmatched Reliability 🛡️
Featuring IPSB protection degree and military-grade components, our inverter operates flawlessly in extreme conditions (-25°C to 60°C). The pure sine wave output ensures clean power for sensitive medical equipment and electronics. - Future-Proof Scalability 📈
Support for parallel connection of up to 4 units (24KW total) means your system can grow with your needs. The modular design allows easy upgrades without replacing your entire system. - Smart Monitoring 📱
Optional Wi-Fi/GPRS modules enable real-time monitoring from your smartphone. Track energy production, consumption patterns, and system health from anywhere in the world.
Perfect For:
- Residential solar+storage systems
- Commercial solar installations
- Off-grid cabins and remote locations
- Emergency backup power solutions
- Microgrid applications
Technical Specifications
| Parameter | SEI-4K-SP | SEI-5.5K-SP | SEI-6K-SP | ||
| AC Output | |||||
| Rated Power | 4,000W | 5,500W | 6,000W | ||
| Peak Power | 8,000VA | 11,000VA | 12,000VA | ||
| Voltage | 230V ±10% single phase | ||||
| Frequency | 50Hz/60Hz (±0.3Hz) | ||||
| Battery | |||||
| Type | Lead-acid/Li-ion/Lithium iron phosphate | ||||
| Voltage | 48V (44V min. startup) | ||||
| Range | 40-60V | ||||
| Max. PV Charge Current | 100A | ||||
| PV Input | |||||
| MPPT Trackers | 3 independent | ||||
| Max. Input Power | 3,000W+3,000W | 4,500W+4,500W | 5,000W+5,000W | ||
| Operating Voltage | 120-580VDC | ||||
| Efficiency | |||||
| Max. MPPT | 99.90% | ||||
| Peak Efficiency | 97.50% | ||||
| General | |||||
| Dimensions | 520*440*180mm (all models) | ||||
| Weight | 20kg | ||||
| Protection | IP65 | ||||
| Warranty | 5 years | ||||
