Sungrow SG50CX-P2 50 kW 3‑Phase Commercial Solar Inverter 50 kW 3‑phase inverter for commercial and industrial PV systems up to 70 kWp, ideal for warehouses, logistics hubs and small solar farms Four independent MPPTs with two strings each for flexible string design and better yield on complex roofs IP66, C5‑rated enclosure, integrated DC and AC surge protection and AFCI for reliable operation in tough UK and coastal environments The Sungrow SG50CX‑P2 is a 50 kW three‑phase string inverter designed for 1000 V DC commercial solar arrays up to 70 kWp. It suits rooftop and ground‑mount systems on logistics centres, factories, offices and agricultural sites where dependable output and straightforward operation matter more than bells and whistles. With high efficiency, strong grid support features and robust environmental protection, it is a practical choice for long‑term PV generation on 230/400 V three‑phase supplies. Key features Rated AC power 50 kW with up to 55 kVA apparent power for strong export capability on three‑phase grids Four MPPT inputs, two strings per MPPT (total eight strings) for good performance on roofs with multiple orientations or partial shading High max efficiency of 98.5 % and European efficiency of 98.3 % to minimise conversion losses Integrated DC Type I+II and AC Type II surge protection, AFCI and built‑in PID recovery to help protect modules and wiring IP66, C5 anti‑corrosion housing with smart forced‑air cooling for outdoor wall‑mounted installation up to 4000 m altitude Supports G99 grid compliance and advanced grid support functions including LVRT, HVRT, active and reactive power control and ramp‑rate control, suitable for UK commercial connections Technical specifications DC input Recommended max. PV input power: 70 kWp Max. PV input voltage: 1100 V DC* Min. PV input voltage / start‑up voltage: 160 V DC / 200 V DC Rated PV input voltage: 600 V DC MPPT operating voltage range: 160 V to 1000 V DC** Number of independent MPPT inputs: 4 Number of PV strings per MPPT: 2 Max. PV input current: 120 A (30 A × 4) Max. DC short‑circuit current: 160 A (40 A × 4) Max. current for DC connector: 30 A AC output Rated AC output power: 50 kW Max. AC output apparent power: 55 kVA Max. AC output current: 83.6 A Rated AC output current (at 230 V phase‑neutral): 72.5 A Rated AC voltage: 3 / N / PE, 220 / 380 V, 230 / 400 V AC voltage range: 312 V to 480 V Rated grid frequency: 50 Hz / 60 Hz Grid frequency range: 45 Hz – 55 Hz / 55 Hz – 65 Hz Harmonic distortion (THD): < 3 % at rated power Power factor at rated power / adjustable range: > 0.99 / 0.8 leading to 0.8 lagging Feed‑in phases / AC connection: 3 / 3‑N‑PE Efficiency Max. efficiency: 98.5 % European efficiency: 98.3 % Protection and monitoring Grid monitoring: yes DC reverse polarity protection: yes AC short‑circuit protection: yes Leakage current protection: yes Surge protection: DC Type I+II / AC Type II Ground fault monitoring: yes Integrated DC switch: yes PV string current monitoring: yes Arc fault circuit interrupter (AFCI): yes PID recovery function: yes Optimizer compatibility: optional (consult Sungrow for details) General data Dimensions (W × H × D): 645 mm × 575 mm × 245 mm Weight: 41 kg Mounting method: wall‑mounting bracket Topology: transformerless Degree of protection: IP66 Night power consumption: < 5 W Corrosion category: C5 Operating ambient temperature range: −30 °C to 60 °C Allowable relative humidity (non‑condensing): 0 % to 100 % Cooling method: smart forced‑air cooling Max. operating altitude: 4000 m Display: LED, Bluetooth + app Communication: RS485 / optional WLAN, Ethernet DC connection type: Evo2 (max. 6 mm²) AC connection type: OT terminal (16–35 mm²) or OT/DT terminal (35–50 mm²) AC cable specification: outside diameter 18 mm – 38 mm Grid compliance: IEC 62109, IEC 61727, IEC 62116, VDE‑AR‑N 4105:2018, IEC 61000‑6‑3, EN 50549‑1, CEI 0‑21 2019, CEI 0‑16 2019, VDE 0126‑1‑1/A1 VFR 2019, UTE C15‑712‑1:2013, UNE 206007‑1/RD 1699, UNE 217002, G99, IEC 63027 Grid support functions: Q‑at‑night, LVRT, HVRT, active and reactive power control, power ramp‑rate control Shipping and installation Shipping is available to the UK, Ireland, Africa, the Caribbean and worldwide. If a shipping rate is not shown at checkout, please contact us on +44 2080 640335 or [email protected] for a tailored quote. This is a grid‑connected commercial inverter and is not a plug‑and‑play product. We recommend installation and commissioning by one of our trusted solar partners or a suitably qualified electrician familiar with G99 requirements. UK expert support Energian provides UK‑based technical support for Sungrow inverters. If you have any questions about system design, grid connection, or compatibility with your PV modules and protection devices, contact us by phone, email or live chat, or visit our office for an in‑person consultation. Documents available for download Sungrow SG36/40/50CX‑P2 datasheet (PDF) Sungrow SG25/30/33/36/40/50CX‑P2 user manual (PDF) Sungrow SG36/40/50CX‑P2 Installation Guide (PDF)
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