Sungrow 350kW 1500VDC Three-Phase String Inverter

The Sungrow SG350HX-US is a 350 kW three-phase, transformerless grid-tie string inverter built for large commercial and utility-scale PV plants. It supports up to 1500 VDC input across 12 independent MPP trackers (optional 16), a 500 V to 1500 V MPP voltage range, and delivers up to 99.02% peak efficiency (98.5% CEC). With smart forced air cooling and an IP66/NEMA 4X enclosure, it performs across a -22°F to 140°F operating range.

Key Features:

• 350 kW output, 99.02% peak / 98.5% CEC efficiency
• Transformerless three-phase grid-tie design
• 12 MPPT trackers (optional 16)
• MPP voltage range 500 V to 1500 V
• Max PV input 1500 VDC, 40 A per input
• Max AC output 254 A at nominal 3/PE 800 VAC
• Type II DC and AC surge protection
• IP66 / NEMA 4X, smart forced air cooling
• PLC and RS485 communication, LED + Bluetooth app
• 45.9 x 34.3 x 14.2 in, 272 lbs, 5-year warranty

Designed for utility-scale and large commercial solar arrays on 800 VAC, 60 Hz grids, the SG350HX-US suits developers needing high-density string architecture. It includes grid support functions such as LVRT, HVRT, Q at night, and 24h real-time insulation monitoring, with MC4 DC and OT/DT AC terminal connections.