Sungrow SG40CX-P2 40kW Commercial 3-Phase Solar Inverter Multi-MPPT string inverter for 1000 Vdc commercial PV systems – 40 kW AC, 4 independent MPPTs, IP66, C5 anti-corrosion. Why specify the Sungrow SG40CX-P2 More yield from awkward roofs – 4 independent MPPTs with a dynamic shading optimisation mode help recover output on split orientations and partly shaded arrays. Faster, cheaper installs – at 40 kg with a plug-and-play buckle mounting design, two engineers can lift and hang it without a hoist. Built for UK commercial sites – IP66 enclosure, C5 anti-corrosion rating and a –30 °C to 60 °C operating range suit warehouses, farms, factories and coastal logistics depots. Overview The Sungrow SG40CX-P2 is a transformerless three-phase string inverter rated at 40 kW AC for commercial and industrial rooftop and ground-mount PV systems up to 56 kWp. It accepts up to 8 strings across 4 MPPTs, supports modules above 500 W with a 15 A per-string input, and includes DC Type I+II and AC Type II surge protection plus AFCI 2.0 as standard. Key features 4 MPPTs, 2 strings per MPPT, 15 A per-string – compatible with high-current bifacial and 500 W+ modules. 98.5% maximum efficiency, 98.3% European efficiency. Smart IV curve diagnosis, PID recovery and grid fault recording for remote operations and maintenance. G99 compliant for UK grid connection; supports LVRT, HVRT, active/reactive power control and Q at night. Wall-mounted, smart forced-air cooling, LED indicator with Bluetooth + app commissioning; RS485 standard, WLAN/Ethernet optional. Technical specifications Recommended max. PV input power 56 kWp Max. PV input voltage 1100 V Min. PV input voltage / Startup input voltage 160 V / 200 V Rated PV input voltage 600 V MPPT voltage range 160 V – 1000 V No. of independent MPP inputs 4 No. 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 Output (AC) Rated AC output power 40 kW Max. AC output apparent power 44 kVA Max. AC output current 66.9 A Rated AC output current (at 230 V) 58 A Rated AC voltage 3 / N / PE, 220 / 380 V, 230 / 400 V AC voltage range 312 V – 480 V Rated grid frequency 50 Hz / 60 Hz Grid frequency range 45 Hz – 55 Hz / 55 Hz – 65 Hz Harmonic (THD) < 3% (at rated power) Power factor / Adjustable power factor > 0.99 / 0.8 leading – 0.8 lagging Feed-in phases / AC connection 3 / 3-N-PE Efficiency Max. efficiency / European efficiency 98.5% / 98.3% General data Dimensions (W × H × D) 645 mm × 575 mm × 245 mm Weight 40 kg Mounting method Wall-mounting bracket Topology Transformerless Degree of protection IP66 Night power consumption < 7 W Corrosion C5 Operating ambient temperature range –30 °C to 60 °C Allowable relative humidity (non-condensing) 0% – 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) 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 Q at night function, LVRT, HVRT, active & reactive power control, power ramp rate control Documents available for download Sungrow SG36/40/50CX-P2 datasheet (PDF) Sungrow SG25/30/33/36/40/50CX-P2 user manual (PDF) Quick installation guide (PDF) Installation The SG40CX-P2 is a commercial three-phase grid-tied inverter and must be installed and commissioned by a qualified electrical contractor with G99 application sign-off. Energian works with trusted UK installation partners – contact us before ordering and we'll match you with an installer in your area or scope the job remotely from your single-line diagram. Shipping Available to the UK, Ireland, Africa, the Caribbean and worldwide. If a shipping rate is not shown at checkout, contact us on +44 20 8064 0335 or [email protected] for a quote. UK expert support Talk to a UK-based renewables specialist before you buy. Reach us by phone on +44 20 8064 0335, by email at [email protected], via live chat on energian.co.uk, or visit our office for an in-person consultation.
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