- MAX. EFFICIENCY 98.6%
- IP66 PROTECTION
STT 15~37.5kW
Three Phase | 4MPPTs | On-Grid(LV)
The Sunways STT-15K~37.5KTL-LV is a three-phase low-voltage grid-tied inverter for commercial and C&I solar systems. With up to 98.8% max efficiency, 4 MPPTs, and DC 2-in-1 support, it delivers high energy yield with reduced PV string mismatch. IP66 protection, integrated surge protection, and AFCI ensure safe outdoor operation, while remote upgrading and Sunways Portal App support simplify installation and O&M .
Key Features
Safe & Reliable
- High reliability due to advanced heat dissipation design
- Integrated lightning protection for both DC and AC
- Adaptable to complex grid environments
- High anti-corrosion ability with aluminum alloy enclosure
- Wider working temperature and altitude range for various installation environments
High Yield
- Max efficiency 98.8%, European weighted efficiency 98.3%
- Up to 10% continuous output overloading capacity
- 4 MPPT design reduces PV string mismatch losses
Easy to Use
- String-level monitoring for improved O&M efficiency
- Supports wireless and wired internet (RS485/WiFi/GPRS/LAN optional)
- Remote upgrading available
Product Highlights
| Parameter | Specification |
|---|---|
| Power Range | 15 kW / 20 kW / 25 kW / 30 kW / 37.5 kW |
| Max. Efficiency | 98.8% |
| European Efficiency | 98.3% |
| MPPT Design | 4 MPPTs |
| Protection Degree | IP66 |
| AFCI Function | Optional |
| Max Input Current | 32 A / 32 A |
| Application | Commercial and C&I Rooftop Solar Systems |
| Parameter | Specification |
|---|---|
| Max DC Input Voltage | 600 V |
| Rated DC Input Voltage | 360 V |
| MPPT Voltage Range | 180–550 V |
| Full Power MPPT Voltage Range | 180–550 V (varies by model) |
| Number of DC Inputs per MPPT | 2 |
| Max Short-circuit Current | 40 A / 40 A |
| AC Output Rated Voltage | 3L/N/PE, 127/220 V |
| Rated AC Frequency | 50 / 60 Hz |
| AC Output Rated Current | 40–98.4 A (depending on model) |
| Max Output Current | 43.3–98.4 A |
| Power Factor | 0.8 leading … 0.8 lagging |
| THDi @ Rated Power | <3% |
| Topology | Transformerless |
| Display | OLED / LED |
| Cooling | Smart Fan Cooling |
| Operating Temperature | -30℃ ~ 60℃ |
| Weight | 92–150 kg |
| Dimensions [W×H×D] | 1025 × 640 × 320 mm |
| Communication | RS485, WiFi/GPRS/LAN optional |
