SMA STP 20-US-50 Sunny Tripower X String Inverter
SMA STP 20-US-50 Sunny Tripower X String Inverter
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SMA STP 20-US-50 Sunny Tripower X String Inverter
STP 20-US-50
Specifications
SMA STP 20-US-50 Sunny Tripower X String Inverter
Introducing the SMA STP 20-US-50 Sunny Tripower X, the smart solution for commercial solar applications. This string inverter features a future-proof design with integrated intelligence, ensuring that your system is not only efficient today but also ready for tomorrow's challenges.
- Three independent MPP trackers with SMA ShadeFix optimization for maximum energy yields.
- Integrated System Manager with ennexOS for advanced monitoring and centralized control.
- Enhanced safety with SunSpec PLC for module-level shutdown and DC AFCI protection.
- Optimized performance with SMA Smart Connected proactive monitoring service.
- Designed for flexible array design and maximum system uptime.
Technology and Overview
Equipped with SMA's ennexOS energy management platform, the STP 20-US-50 offers superior operational efficiency and smart energy management for commercial PV systems.
Installation and Compatibility Overview
With its ergonomic design, the STP 20-US-50 ensures straightforward installation. It's suitable for a variety of commercial solar projects, offering flexibility and ease of use.
Benefits and Applications Overview
The STP 20-US-50 is designed to maximize returns and enhance safety for commercial solar installations, promoting long-term sustainability and operational peace of mind.
Specifications
Specification | Value |
Model No. | STP 20-US-50 |
Maximum PV array power | 30000 Wp |
Maximum input voltage | 1000 V |
MPP voltage range | 350 V to 800 V |
Minimum input voltage / initial input voltage | 150 V / 188 V |
Maximum operating input current / short-circuit current per MPP tracker | 24 A / 37.5 A |
Number of independent MPP trackers / string inputs per MPP tracker | 3 / 2 |
Nominal output power | 20000 W |
Maximum apparent power | 20000 VA |
Nominal AC voltage | 480 V / 277 V |
AC voltage range | 244 V to 305 V |
Rated grid frequency / range | 60 Hz / 50 Hz to 66 Hz |
Maximum output current | 24 A |
Power factor at rated power / adjustable displacement | 1 / 0.8 overexcited to 0.8 underexcited |
Output phases / line connection | 3 / 3-(N)-PE |
Harmonics (THD) | < 3 % |
CEC efficiency | 97.5% |
Load rated DC disconnect | Standard feature |
Ground fault monitoring / grid monitoring | Standard feature |
DC reverse polarity protection / AC short-circuit protection | Standard feature |
All-pole sensitive residual-current monitoring unit | Standard feature |
Protection class / overvoltage category | I / III |
DC AFCI arc-fault protection | Standard feature |
SunSpec PLC signal for rapid shutdown | Standard feature |
DC surge protection type 2 / DC surge arrester type 1+2 | Optional feature |
Dimensions (W/H/D) | 728 mm / 762 mm / 266 mm (28.7 in / 30 in / 10.5 in) |
Device Weight | 35 kg / 77 lbs |
Operating temperature range | -25°C to +60°C (?13°F to +140°F) |
Noise emission (typical) | 59 dB(A) |
Topology / cooling concept | Transformerless / OptiCool (forced convection, variable speed fans) |
Enclosure protection rating | Type 4X (as per UL 50E) |
Corrosivity classification according to IEC 61701 | C5* |
Maximum permissible value for relative humidity (non-condensing) | 1 |
Mounting type | Vertical rack / wall mount to 15° from horizontal |
DC connection / AC connection | Amphenol H4 Plus / spring-cage terminal |
LED indicators (status / fault / communication) | Standard feature |
Network interfaces: Ethernet / WLAN | Standard feature (2 ports) |
Data protocols: SMA Modbus / SunSpec Modbus / Speedwire | Standard feature |
Multi-function relay / Extension module slot / Digital inputs | Standard feature (6 inputs) |
SMA ShadeFix string level optimization | Standard feature |
Integrated I-V curve diagnostics 1) | Standard feature |
Integrated Plant Control / Q on Demand 24/7 | Standard feature |
SMA Smart Connected (proactive monitoring and service support) | Standard feature |
Standard warranty | 10 years |
Optional warranty extensions (total warranty coverage cannot exceed 20 years) | +5 years, +10 years |
Certificates and approvals | UL 62109-1, UL 1699B Ed. 1, CAN/CSA 22.2 No. 62109-1:16 / 62109-2:16, PV Rapid Shutdown System Equipment in accordance with UL1741:2021 |
FCC compliance | FCC Part 15 Class A |
Grid interconnection standards | UL 1741 SB, IEEE 1547:2018, compliance to SRDs: CA Rule 21, HECO Rule 14H, ISO-NE |
Maximum number of supported inverters / energy meters | 5 / 1 |
Maximum system power PV inverters (nominal AC power) | 150 kVA |
Centralized commissioning of all devices in the system | Standard feature |
Remote parameterization of SMA devices | Standard feature (via Sunny Portal powered by ennexOS) |
SMA Dynamic Power Control (e.g. zero export / Volt-VAr) 2) | Optional feature |