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SG-CX Series 33KW-50KW String Inverters
SG-CX Series 33KW-50KW String Inverters

SG-CX Series 33KW-50KW String Inverters

High-efficiency solar inverter with 5 MPPTs (98.7%), bifacial compatibility, smart monitoring, wireless control, and robust safety.

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Description

Three Phase String Inverters

Models: SG33CX, SG40CX, SG50CX

HIGH PERFORMANCE

Supports up to 5 MPPTs with 98.7% peak efficiency.

Optimized for bifacial solar panels.

Integrated PID restoration feature.

INTELLIGENT OPERATION & MAINTENANCE

Hassle-free setup with touchless activation and wireless updates.

Real-time IV curve analysis and fault detection.

No fuses required, featuring advanced string-level monitoring.

COST-EFFECTIVE DESIGN

Works with both aluminum and copper AC wiring.

Dual DC input consolidation for simpler installation.

Wireless connectivity with optional Wi-Fi module.

RELIABLE PROTECTION

IP66 & C5-M rated for extreme weather and corrosion resistance.

Type II surge protection on DC and AC sides.

Complies with international safety and grid standards.


Type DesignationSG33CXSG40CXSG50CX

Input ( DC )

  • Max. PV input voltage1100 V *
  • Min. PV input voltage / Start-up input voltage200 V / 250 V
  • Nominal PV input voltage585 V
  • MPP voltage range200 – 1000 V
  • No. of independent MPP inputs345
  • No. of PV strings per MPPT2
  • Max. PV input current3 * 26 A4 * 26 A5 * 26 A
  • Max. DC short-circuit current3 * 40 A4 * 40 A5 * 40 A

Output ( AC )

  • AC output power33 kVA @45 ℃ / 36.3 kVA @ 40 ℃ 400Vac; 33 KVA @ 50 ℃ / 36.3 KVA @ 45 ℃ 415Vac40 kVA @ 45 ℃ / 44 kVA @ 40 ℃ 400Vac; 40 KVA @ 50 ℃ / 44 KVA @ 45 ℃ 415Vac50 kVA @45 ℃ / 55kVA @ 40 ℃ 400Vac; 50KVA @ 50 ℃ / 55kVA @ 45 ℃ 415Vac
  • Max. AC output current55.2 A66.9 A83.6 A
  • Nominal AC voltage3 / N / PE, 230 / 400 V
  • AC voltage range312 – 528 V
  • Nominal grid frequency / Grid frequency range50 Hz / 45 – 55 Hz, 60 Hz / 55 – 65 Hz
  • Harmonic ( THD )< 3 % (at nominal power)
  • DC current injection< 0.5 % In
  • Power factor at nominal power / Adjustable power factor> 0.99 / 0.8 leading – 0.8 lagging
  • Feed-in phases / AC connection3 / 3
  • Max. efficiency / European efficiency98.6 % / 98.3 %98.6 % / 98.3 %98.7% / 98.4%

Protection and Function

  • DC reverse polarity protectionYes
  • AC short circuit protectionYes
  • Leakage current protectionYes
  • Grid monitoringYes
  • Ground fault monitoringYes
  • DC switchYes
  • AC switchNo
  • PV string monitoringYes
  • Q at night functionYes
  • PID recovery functionYes
  • Arc fault circuit interrupter (AFCI)Optional
  • Overvoltage protectionDC Type II (optional: Type I + II) / AC Type II

General Data

  • Dimensions ( W * H * D )702*595*310mm782*645*310mm782*645*310mm
  • Weight50 kg58 kg62 kg
  • TopologyTransformerless
  • Degree of protectionIP66
  • Night power consumption≤2 W
  • Operating ambient temperature range-30 to 60 ℃ (> 45 ℃ derating)
  • Allowable relative humidity range0 % - 100 %
  • Cooling methodSmart forced air cooling
  • Max. operating altitude4000 m (> 3000 m derating)
  • DisplayLED, Bluetooth+APP
  • CommunicationRS485 / Optional: WLAN, Ethernet
  • DC connection typeMC4 ( Max. 6 mm² )
  • AC connection typeOT or DT terminal (Max.70 mm²)
  • ComplianceIEC 62109, IEC 61727, IEC 62116, IEC 60068, IEC 61683, VDE-AR-N 4105:2018, VDE-AR-N 4110:2018, IEC 61000-6-3, EN 50549-1/2, AS/NZS 4777.2:2015, CEI 0-21 2019, CEI0-16 2019, VDE 0126-1-1/A1 VFR 2019, UTE C15-712-1:2013, DEWA, UNE 206007-1/RD 1699, UNE 217001, Israel certificate, G99
  • Grid SupportQ at night function, LVRT, HVRT,active & reactive power control and power ramp rate control


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