Description
xSMA Sunny Tripower X 20kW 3 Phase Grid-Tied Solar Inverter
The SMA Sunny Tripower X 20kW is a three phase grid-tied solar inverter designed for commercial PV systems and large residential installations. With three independent MPP trackers, a maximum input voltage of 1000VDC, IP65 enclosure, and integrated system manager functionality, it provides a capable and well-specified platform for professional solar installations.
Key Features
- 20kW rated AC output at 230V, 50Hz
- Three independent MPP trackers
- Maximum input voltage: 1000VDC
- Maximum usable input current per MPP tracker: 24A
- MPP voltage range: 345 to 800V
- Maximum efficiency: 98.2%
- European efficiency: 97.9%
- IP65 enclosure suitable for outdoor installation
- SMA ShadeFix for improved yield under partial shading
- SMA ArcFix integrated arc-fault circuit interrupter
- Integrated system manager: monitors and controls up to 5 SMA inverters and one energy meter
- SMA Dynamic Power Control for active and reactive power management
- Ethernet, local WLAN, and RS485 communication
- SMA Modbus and SunSpec Modbus data protocols
- Direct access to Sunny Portal powered by ennexOS
- OptiCool thermal management for efficient cooling and long service life
Product Overview
The Sunny Tripower X 20kW is available in 12kW, 15kW, 20kW, and 25kW variants within the same product family, sharing a common platform and installation footprint. The three MPP trackers allow independent string management across different roof orientations or shading conditions, maximising energy yield in complex PV layouts.
The integrated system manager function removes the need for a separate monitoring device in smaller commercial systems, handling dynamic power control and feed-in management for up to five inverters totalling up to 135kVA. Direct connection to Sunny Portal via ennexOS provides remote monitoring and data analysis without additional hardware.
SMA ShadeFix uses an advanced optimisation algorithm to maximise energy yield during partial shading events, operating at the inverter level without requiring module-level optimisers. SMA ArcFix provides active detection of DC arc faults to reduce fire risk in the PV array.
Applications
- Commercial rooftop and ground-mounted solar PV systems
- Large residential solar installations
- Multi-inverter systems with centralised monitoring
- Sites with partial shading or multiple roof orientations
Installation and Safety Notes
This inverter must be installed by a qualified electrical engineer or MCS-accredited solar installer. G99 notification and DNO approval are required for connection to the UK distribution network at this power level. DC wiring, string fusing, AC protection, and earthing must comply with IET Wiring Regulations and SMA's installation manual. Commissioning via SMA commissioning tools is required before operation.
Specifications
x| Parameter | STP-X 12kW | STP-X 15kW | STP-X 20kW | STP-X 25kW |
| Max PV Array Power | 18000 Wp | 22500 Wp | 30000 Wp | 37500 Wp |
| Max Input Voltage | 1000 V | |||
| MPP Voltage Range | 210–800 V | 260–800 V | 345–800 V | 430–800 V |
| Rated Input Voltage | 580 V | |||
| Min / Initial Input Voltage | 150 V / 188 V | |||
| Max Input Current per MPP Tracker | 24 A | |||
| Max Short-Circuit Current per MPP Tracker | 37.5 A | |||
| Number of MPP Trackers / Strings per Tracker | 3 / 2 | |||
| Rated Output Power | 12000 W | 15000 W | 20000 W | 25000 W |
| Rated / Max Apparent Power | 12000 VA | 15000 VA | 20000 VA | 25000 VA |
| Nominal AC Voltage | 220/380 V; 230/400 V; 240/415 V | |||
| AC Voltage Range | 176–275 V / 304–477 V | |||
| Grid Frequency / Range | 50 Hz / 44–56 Hz; 60 Hz / 54–66 Hz | |||
| Rated Output Current | 17.4 A | 21.7 A | 29 A | 36.2 A |
| THD | <3% | |||
| Max Efficiency / EU Efficiency | 98.2% / 97.6% | 98.2% / 97.8% | 98.2% / 97.9% | 98.2% / 98.0% |
| Ingress Protection | IP65 | |||
| Dimensions (W x H x D) | 728 x 762 x 266 mm | |||
| Weight | 35 kg | |||
| Operating Temperature | -25°C to +60°C | |||
| Max Noise Emission | 59 dB(A) | |||
| Self-Consumption (Night) | <5 W | |||
| Topology / Cooling | Transformerless / OptiCool | |||
| Communication | Ethernet, local WLAN, RS485 | |||
| Data Protocols | SMA Modbus, SunSpec Modbus, Speedwire | |||
Return Policy
xWe offer a 14-day, no-quibble returns or replacement policy because we want you to be totally satisfied with your purchase.
If you are unhappy in any way with your purchase, you can return it for a refund or a replacement, as long as you return it in the same condition as it arrived (original/undamaged packaging and product) and within 30 days of receiving it. We will pay for your return postage on a faulty item as long as you send it using Royal Mail 2nd class recorded delivery (for EU or International Shipments, you have to use our UPS account, we will provide you with a return label)
Please keep in mind the following:
- Items returned within 14 days but not in their original and undamaged packaging will also incur a -15% charge per package.
- If you return an item that doesn't adhere to our returns procedure or doesn't include a returns form, you may be liable for a £10 administration fee
- Individual items from a bundle can't be returned, refunded or exchanged. If you want a refund/credit/exchange for a bundle, all items must be returned to us.
Before you return your item, please make sure that:
- You follow our returns process (outlined below)
- The goods and packaging are undamaged
IMPORTANT: We need to be able to identify an item with your order. We can only do this if you follow our returns process. Please do not send us items back that do not follow this process as they cannot be identified properly and will not be replaced or refunded.
What delivery method do I need to use when returning an item?
You must send the goods back to us via Royal Mail 2nd class recorded delivery. Refunds on faulty items returned are reimbursed within 5 working days.
Can I return just one item from multiple purchases?
Yes. Once you start the returns process you will go to a page that will allow you to choose which items you want to be replaced or refunded.
Returning faulty goods
If your item is faulty, you need to follow the returns policy, where you will be able to state that it’s faulty. The product will then arrive at our warehouse for testing.
If your purchase is not within 14 days
You can still exchange your item for a different product or for credit to use on the Voltacon Solar or Ledison-led-lights.co.uk websites (-15% from the credit amount).
Returns outside of the 14-day period do not qualify for the free returns policy.
Returning an item within the warranty
If you have a warranty and want to return a faulty item, you just need to follow our standard returns process. When we receive your item, we will then check that it’s within warranty and for any faults before arranging a replacement.