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SMA Sunny Tripower white wall-mounted solar inverter with status indicator lights and black side panel connector.

3-Phase Grid-Tie Solar Inverter 20kW IP65 | SMA Sunny Tripower X

£3,142.13
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SMA Sunny Tripower white wall-mounted solar inverter with status indicator lights and black side panel connector.
3-Phase Grid-Tie Solar Inverter 20kW IP65 | SMA Sunny Tripower X

3-Phase Grid-Tie Solar Inverter 20kW IP65 | SMA Sunny Tripower X

Vendor
SMA
SKU
STP20-50
Availability
In stock
Weight
35.0 kg

£3,142.13inc VAT £2,618.44exc VAT

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Product Description

The SMA Sunny Tripower X 20kW is a three phase grid tie inverter built for commercial PV systems and large residential installations. It runs three independent MPP trackers, accepts up to 1000VDC on the input side, and sits in an IP65 enclosure suitable for outdoor mounting. An integrated system manager adds monitoring and control across multiple inverters without extra hardware.

Grid tie inverter key features

  • Rated output, 20kW AC at 230V, 50Hz
  • MPP trackers, three independent trackers
  • Input voltage, up to 1000VDC maximum, 345 to 800V MPP range
  • Current per tracker, 24A maximum usable input current
  • Efficiency, 98.2% maximum, 97.9% European efficiency
  • Enclosure, IP65 rated for outdoor installation

Built-in system functions

SMA ShadeFix improves yield during partial shading by optimising at the inverter level, without module-level optimisers. SMA ArcFix provides active DC arc-fault detection. The integrated system manager can monitor and control up to five SMA inverters plus one energy meter, handling dynamic power control and feed-in management for systems up to 135kVA. Communication runs over Ethernet, local WLAN, or RS485, using SMA Modbus and SunSpec Modbus protocols, with direct access to Sunny Portal via ennexOS for remote monitoring.

Product family

This 20kW model shares its platform and footprint with the 12kW, 15kW, and 25kW variants in the Sunny Tripower X range. The three MPP trackers give independent string management, which helps on roofs with mixed orientations or shading.

Applications

Suited to commercial rooftop and ground-mounted PV, large residential solar arrays, multi-inverter sites needing centralised monitoring, and installations with partial shading or several roof aspects.

Installation notes

Installation must be carried out by a qualified electrical engineer or MCS-accredited solar installer. Connection at this power level requires G99 notification and DNO approval in the UK. DC wiring, string fusing, AC protection and earthing must follow IET Wiring Regulations and SMA's installation manual, with commissioning completed via SMA's commissioning tools before the system is switched on.

Technical Specifications 25 rows Show
ParameterValue
Max PV Array Power30000 Wp
Max Input Voltage1000 V
MPP Voltage Range345–800 V
Rated Input Voltage580 V
Min / Initial Input Voltage150 V / 188 V
Max Input Current per MPP Tracker24 A
Max Short-Circuit Current per MPP Tracker37.5 A
Number of MPP Trackers / Strings per Tracker3 / 2
Rated Output Power20000 W
Rated / Max Apparent Power20000 VA
Nominal AC Voltage220/380 V; 230/400 V; 240/415 V
AC Voltage Range176–275 V / 304–477 V
Grid Frequency / Range50 Hz / 44–56 Hz; 60 Hz / 54–66 Hz
Rated Output Current29 A
THD<3%
Max Efficiency / EU Efficiency98.2% / 97.9%
Ingress ProtectionIP65
Dimensions (W x H x D)728 x 762 x 266 mm
Weight35 kg
Operating Temperature-25°C to +60°C
Max Noise Emission59 dB(A)
Self-Consumption (Night)<5 W
Topology / CoolingTransformerless / OptiCool
CommunicationEthernet, local WLAN, RS485
Data ProtocolsSMA Modbus, SunSpec Modbus, Speedwire

Manufacturer datasheet. Figures as published by the manufacturer.

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