- MAX. EFFICIENCY 98.8%
- IP66 PROTECTION
STT 55~80kW
Three Phase | 10 MPPTs | On-Grid(LV)
The Sunways STT-55K~80KTL-SE-LV is a three-phase low-voltage inverter for commercial and C&I solar systems. With 98.8% max efficiency, 10 MPPTs, and DC 2-in-1 support, it maximizes energy yield. IP66 protection, intelligent fan cooling, and real-time monitoring enhance reliability, while remote upgrading and the Sunways Portal App simplify installation and O&M.
Key Features
Intelligent
- Real-time fault curve recording to improve O&M efficiency
- IP66 intelligent fans lower operating temperature and extend service life
- Intelligent quad-core processor for faster and more comprehensive information processing
High Yield
- Max. efficiency up to 98.8%
- Up to 10% continuous output overloading capacity
- 10 MPPT design reduces PV string mismatch loss
- DC 2-in-1 connection enabled, compatible with high-power PV panels
Convenience
- Support wireless and wired internet connection: RS485 / WiFi / GPRS / LAN optional
- Remote upgrading available
- Fast and easy commissioning via App or OLED display
Product Highlights
| Parameter | Specification |
|---|---|
| Power Range | 55 kW / 60 kW / 70 kW / 75 kW / 80 kW |
| Max. Efficiency | Up to 98.8% |
| European Efficiency | Up to 98.3% |
| MPPT Design | 10 MPPTs |
| Protection Degree | IP66 |
| DC 2-in-1 Connection | Supported |
| Max. Input Current | 10 × 40 A |
| Application | Commercial and C&I Low-voltage Solar Systems |
| Parameter | Specification |
|---|---|
| Max. DC Input Voltage | 1100 V |
| Rated DC Input Voltage | 360 V |
| MPPT Voltage Range | 200–1000 V |
| Start-up Voltage | 180 V |
| No. of DC Inputs per MPPT | 2 |
| Max. Short-circuit Current | 10 × 50 A |
| Rated Output Voltage | 3L / N / PE, 127 / 220 V, 133 / 230 V |
| Rated AC Frequency | 50 / 60 Hz |
| Rated Output Power | 55 kW / 60 kW / 70 kW / 75 kW / 80 kW |
| Max. Output Power | 60.5 kW / 66 kW / 77 kW / 82.5 kW / 88 kW |
| Max. Output Current | 158.8 A / 173.2 A / 202.1 A / 216.5 A / 230.9 A |
| Power Factor | 0.8 leading … 0.8 lagging |
| THDi @ Rated Power | <3% |
| Surge Protection | Integrated Type II |
| AFCI Function | Optional |
| Cooling | Smart Fan Cooling |
| Operating Temperature | -30℃ ~ 60℃ |
| Operating Altitude | 4000 m, derating above 3000 m |
| Dimensions | 1025 × 640 × 320 mm |
| Weight | 92 kg |
| Display | OLED & LED |
| Communication | RS485 / WiFi / GPRS / LAN Optional |
| Topology | Transformerless |
