Description
300kW 3-phase string inverter with 6 MPPT is a next-generation, high-voltage solar inverter purpose-built for utility-scale and large industrial PV plants. Delivering 300kVA of rated apparent power on an 800V three-phase grid connection, the SolaX GRAND X3-GRD-300K-HV is engineered to maximize energy yield and minimize levelized cost of energy (LCOE) across large ground-mount parks, logistics rooftops, and industrial self-consumption projects.
With 6 MPP trackers and 5 strings per tracker (30 total string inputs), this 300kW 3-phase string inverter with 6 MPPT offers exceptional field-design flexibility across a wide 500–1500VDC voltage range. Each tracker supports up to 75A of current — with a maximum short-circuit current of 115A — making it fully optimized for today’s high-current TOPCon and HJT modules without limiting available power. Peak conversion efficiency reaches an outstanding 99.03% (98.80% European efficiency), keeping conversion losses minimal even at full commercial and utility-scale load.
Built for demanding O&M environments, the inverter features I-V curve scanning, string-level performance reading, and advanced remote diagnostics that catch soiling, PID degradation, and faults early — reducing downtime and boosting long-term plant availability. A transformerless topology paired with intelligent thermal cooling ensures reliable performance from –30°C to 60°C, while an IP66-rated enclosure, Type II surge protection (Type I+II optional), optional AFCI, and external Anti-PID protection round out a robust industrial-grade safety package.
For utility integration, this 300kW 3-phase string inverter with 6 MPPT supports Modbus RTU/TCP, SunSpec, and IEEE 2030.5 communications, with optional WiFi, LAN, 4G, or PLC connectivity for SCADA integration. Grid-support functions include 24-hour reactive power compensation (SVG), adjustable power factor, and controlled DC injection — ensuring compliance with strict grid codes including EN50549, VDE-AR-N-4110/4105, IEC 62116/61727, G99, CEI 0-16/0-21, RD1699, and NRS097.
Key Features
- 300kVA rated output at 800V three-phase — built for utility-scale and industrial PV plants
- 6 MPP trackers, 5 strings each (30 total inputs) — exceptional field-design flexibility
- 75A current per MPPT (115A max Isc) — optimized for high-current TOPCon/HJT modules
- Up to 99.03% max efficiency (98.80% European efficiency) — minimal conversion losses
- 500–1500VDC MPPT voltage range — wide compatibility with modern high-voltage arrays
- I-V curve scanning & string-level monitoring — early detection of soiling, PID, and faults
- 24-hour reactive power compensation (SVG) — grid support even at night
- Transformerless topology with intelligent cooling — reliable in –30°C to 60°C environments
- IP66 protection rating — suitable for demanding outdoor industrial installation
- Type II SPD (DC & AC), optional AFCI, external Anti-PID — comprehensive protection suite
- Modbus RTU/TCP, SunSpec, IEEE 2030.5 — enterprise-grade SCADA/grid integration
- Optional WiFi/LAN/4G/PLC connectivity — flexible remote monitoring
Technical Data Table
