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 info@energian.co.uk 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.