Sunny Tripower X 20-US - 20KV 480/277 VAC 1000Vdc String Inverter 03-20-1000-2-50
Sunny Tripower X 20-US - 20KV 480/277 VAC 1000Vdc String Inverter 03-20-1000-2-50
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- SKU
- PES-SPS-SIV-0741
- MPN
- 03-20-1000-2-50
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SMA Sunny Tripower X 20-US String Inverter
Model STP-X-20-US-50 | 20 kW | 480/277 VAC 3-Phase | 1000 Vdc
Product Overview
The Sunny Tripower X 20-US is a high-efficiency commercial 3-phase string inverter delivering 20 kW at 480/277 VAC with a 1000 Vdc PV input. It features three MPPTs (2 strings each), integrated SunSpec PLC rapid shutdown, DC AFCI, and an integrated DC disconnect. An Integrated System Manager provides monitoring and control for up to five inverters (max 150 kVA) via Sunny Portal powered by ennexOS.
Key Benefits
High Power & Efficiency: 20 kW @ 480/277 V with max AC current of 24 A and industry-leading CEC efficiency of 97.5%.
Advanced MPPT Design: 1000 Vdc system with 3 independent MPPTs, 2 strings per MPPT, 24 A usable / 37.5 A Isc per MPPT for maximum energy harvest.
Built-In Safety Features: SunSpec PLC rapid shutdown, DC AFCI, reverse-polarity protection, ground & grid monitoring; optional DC Type 2 or Type 1+2 surge protection.
Integrated System Manager: Centralized commissioning, remote parameterization, Dynamic Power Control with zero-export and Volt-VAr capabilities.
Rugged Outdoor Enclosure: Type 4X outdoor-rated enclosure with OptiCool forced-convection cooling; 59 dB(A) at 1 m for quiet operation.
Comprehensive Communications: Dual Ethernet, WLAN, Modbus (SMA & SunSpec), multi-function relay, and 6 digital inputs for flexible system integration.
How It Works
The Sunny Tripower X converts DC power from solar panels into grid-compatible 3-phase AC power. Its advanced architecture maximizes energy production while ensuring safety and reliable grid compliance.
Triple MPPT Architecture: Three independent maximum power point trackers optimize energy harvest from different string orientations or shading conditions.
Transformerless Design: High-efficiency transformerless topology reduces weight and losses while maintaining grid code compliance.
OptiCool Thermal Management: Variable-speed fans provide intelligent cooling, extending component life and maintaining efficiency across operating conditions.
Technical Specifications
| Manufacturer | SMA Solar Technology |
| Model Number | STP-X-20-US-50 (MPN: 03-20-1000-2-50) |
| AC Output Power | 20,000 W nominal / 20,000 VA max |
| AC Voltage / Phase | 480/277 VAC, 3-Phase, 60 Hz |
| Max AC Current | 24 A |
| Max DC System Voltage | 1000 V |
| MPP Voltage Range | 350–800 V |
| MPPT Configuration | 3 MPPT, 2 strings per MPPT |
| Max Input Current per MPPT | 24 A usable / 37.5 A Isc |
| CEC Efficiency | 97.5% |
| Protection Features | Integrated DC disconnect, DC AFCI, SunSpec PLC rapid shutdown |
| Enclosure Rating | Type 4X (UL 50E), Transformerless |
| Cooling | OptiCool Variable-Speed Fans |
| Dimensions (W × H × D) | 28.7 × 30.0 × 10.5 in |
| Weight | 77 lb |
| Communications | Ethernet (2×), WLAN, SMA & SunSpec Modbus, 6 digital inputs |
Certifications & Warranty
Certifications: UL 1741 SB, IEEE 1547:2018, UL 62109-1, UL 3741, FCC Part 15 Class A
Warranty: 10-Year Standard Warranty (optional extensions available)
Documentation
● Available | Contact us for lead time and pricing
| SKU | PES-SPS-SIV-0741 |
|---|---|
| MPN | 03-20-1000-2-50 |
| Manufacturer | SMA |
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