Sungrow SG15RT Multi-MPPT String Inverter for 1000 Vdc System

The Sungrow SG15RT is a 15kW three-phase grid-tie string inverter for 1000Vdc systems, built for larger residential rooftops and small commercial installations. Two independent MPPTs each take two strings and track across a wide 160–1000V window, starting from 180V so production begins earlier in the morning and holds through short winter days. Recommended PV input reaches 22.5kWp against 15kW rated output — 1.5x oversizing headroom. Max efficiency 98.5% with 98.1% European efficiency, notably high for this class. Bifacial modules are supported directly, and built-in PID recovery reverses potential-induced degradation overnight. Smart IV curve scanning diagnoses underperforming strings remotely, and per-string current monitoring flags faults before they cost yield. Safety comes from a quick arc fault circuit interrupter, Type II surge protection on DC and AC sides, and a C5 anti-corrosion rating for coastal and industrial sites. The IP65 enclosure uses natural cooling with no fans to service, operating from -25°C to +60°C up to 4000m altitude. At 21kg it mounts on a single wall bracket, with push-in MC4 connectors and plug-and-play AC termination. Commissioning runs through the Sungrow app over WLAN, with Ethernet, RS485, DI and DO available for monitoring, plus 24/7 live data and remote firmware updates. Certified to IEC/EN 62109-1/2, IEC 61727, IEC 62116, AS/NZS 4777.2:2020, VDE-AR-N-4105, EN 50549-1, G98 and DEWA, with LVRT, HVRT and power control.