SMA Sunny Tripower X 20kW STP20-50 Three-Phase Solar Inverter
Modelo: STP20-50- Sku: SMAINVE035
- Vendor: SMA
Specifications
Product Description
The SMA Sunny Tripower X 20kW STP20-50 Three-Phase Solar Inverter is a high-efficiency string inverter designed for self-consumption plants and small commercial installations. It integrates a system manager with native access to Sunny Portal (ennexOS) to orchestrate up to five inverters (up to 135 kVA) and an Energy Meter, allowing dynamic control of active/reactive power, phase balancing, and zero feed-in. Its 3 high-current MPPTs, ArcFix protection (AFCI), and the ShadeFix algorithm ensure optimal and safe performance even with partial shading and new generation modules.
Main Features
- Nominal power 20 kW at 230/400 V three-phase (50/60 Hz) with PV oversizing up to approx. 30 kWp STC.
- 3 independent MPPTs with 2 strings per MPPT, current per tracker of 24 A (Isc max. 35 A) and wide MPPT window for long strings.
- Max. DC voltage 1000 V; nominal Vdc 580 V; start-up from ~150–188 V and MPPT range approx. 257–800 V.
- Max. efficiency ≈ 98.2% (EU ≈ 98%) with OptiCool cooling and sound level < 65 dB(A).
- Safety and continuity: SMA ArcFix (arc detection and interruption), RCMU, optional type II DC protection, reverse polarity, PID recovery function.
- Total connectivity: 2× Ethernet, WLAN, Modbus (SMA/SunSpec) over Speedwire, RS485 (module), 6 digital inputs and multifunction relay.
Advantages or Benefits
- Centralized management with the integrated system manager: monitor, parameterize, and control up to 5 inverters from Sunny Portal.
- Higher real production thanks to ShadeFix and I-V diagnosis, which detects abnormal strings and streamlines maintenance.
- Outdoor robustness: IP65 enclosure, operation from −25 °C to +60 °C, 100% RH without condensation.
- Reduced OPEX with SMA Smart Connected (proactive monitoring and automatic notifications to the installer).
- Scalability via expansion slot for future functions and compatibility with SMA Energy Meter and EV Charger.
Purpose or Applications
Ideal for three-phase commercial self-consumption in logistics warehouses, agro-industry, offices, businesses, and energy communities. This is not a hybrid inverter; for storage and back-up, integrate specific SMA solutions (e.g., controllers and AC-coupled systems).
Technical Specifications
| Nominal AC power | 20 kW (230/400 V, 3-phase) |
| Admissible PV power (STC) | ≈ 30 kWp |
| Max. DC voltage | 1000 V |
| MPPT window | ≈ 257–800 V (nom. Vdc 580 V) |
| MPPT / strings per MPPT | 3 / 2 |
| Current per MPPT / Isc max. | 24 A / 35 A |
| Max. efficiency / EU | ≈ 98.2% / ≈ 98% |
| Protection / Cooling | IP65 / OptiCool |
| Communications | 2×Ethernet, WLAN, Modbus/SunSpec (Speedwire), RS485 (module) |
| Functions | ShadeFix, ArcFix (AFCI), Smart Connected, Dynamic Power Control, PID recovery |
| Dimensions / Weight | ≈ 728 × 762 × 266 mm / ≈ 35 kg |
| Operating temp. / Humidity | −25 °C … +60 °C / 100% without condensation |
| Certificates | CE, EN 50549-1/-2, VDE-AR-N 4105/4110, UKCA |
Compatibilities
Direct compatibility (SMA ecosystem): Sunny Home Manager 2.0, SMA Data Manager M, SMA Energy Meter, SMA EV Charger (EVC7.4-1AC-10, EVC22-3AC-10), Modbus/SunSpec protocols. Official accessories: SPD DC kits, RS485 module (MD.485-40), Sensor Module (MD.SEN-40).
SMA Sunny Tripower X 20kW STP20-50 Three-Phase Solar Inverter combines power, safety, and intelligent control to maximize energy and minimize costs in commercial photovoltaic projects.
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SMA Sunny Tripower X 20kW STP20-50 Three-Phase Solar Inverter
