Sungrow SG33CX 33 kW three-phase solar inverter with 3 MPPT trackers

The Sungrow SG33CX is a transformerless 33 kW three-phase solar inverter with three independent MPPT trackers. It is intended for grid-connected photovoltaic systems and combines high conversion efficiency with string monitoring and integrated protection.

Input and output

• Maximum PV input voltage: 1100 V; MPPT voltage range: 200–1000 V.
• Three independent MPPT inputs with up to two PV strings per tracker.
• Maximum PV input current: 78 A; maximum DC short-circuit current: 120 A.
• Rated AC output power: 33000 W; maximum apparent power: 36300 VA.
• Maximum AC output current: 55.2 A; three-phase connection.

Key data

• Maximum efficiency: 98.60%; European efficiency: 98.20%.
• Grid monitoring, reverse-polarity, AC short-circuit, leakage-current and Type II DC/AC surge protection; PV string monitoring.
• Protection rating: IP66; weight: 50 kg; smart forced-air cooling.
• Operating temperature: -30 °C to +60 °C with derating above +45 °C; maximum altitude: 4000 m with derating above 3000 m.
• LED and app indication, RS485 communication and optional 4G or Wi-Fi.
• Manufacturer's warranty: 5 years, subject to the stated installation and documentation conditions.