The Yaskawa Solectria Solar SGI300 is a 300 kW three-phase string inverter engineered for commercial and utility-scale solar installations across the USA. It converts DC power from solar arrays into 480 VAC grid-compliant AC output with exceptional efficiency. The SGI300 delivers CEC weighted efficiency of 97.5% and peak efficiency up to 98.3%, paired with nighttime tare losses. This unit combines transformerless architecture with NEMA 3R outdoor-rated enclosure construction and is manufactured in the USA.
Technical Specifications
Power & Efficiency
• Rated output: 300 kW
• AC output: 480 VAC, three-phase
• CEC weighted efficiency: 97.5%
• Peak efficiency: 98.3%
• AC voltage tolerance: −12% to +10% of nominal
DC Input
• Absolute maximum input voltage: 600 VDC
• MPPT input voltage range: 300–500 VDC
• Maximum operating input current: 908 A
Environmental & Compliance
• Operating temperature: −40 to +50 °C
• Enclosure rating: NEMA 3R
• Certifications: UL 1741SA, Rule 21
• Arc fault and rapid shutdown: NEC 2014 690.11 & 690.12 compliant (with ARCCOM combiner)
• DC ground fault detection and interruption: Standard
Weight & Dimensions
• Weight: 2,346–3,224 kg
– Key Features
• Transformerless string inverter design
• Integrated data logger and SolrenView™ web-based monitoring
• Modbus communication protocol support
• User-interactive LCD interface
• Built-in cellular connectivity (optional)
• Remote shutdown capability via 24 VDC signal input
• Voltage and frequency ride-through, controlled ramp rates, reactive power control, and real power curtailment
• Lightning arrester recommended for both DC and AC inputs
• Uptime guarantee available
• Stainless steel enclosure option
– Typical Applications
Commercial rooftop and ground-mount solar arrays, utility-scale photovoltaic plants, and grid-connected systems requiring advanced grid support and remote monitoring.
– Compatibility & Integration
Subcombiner configurations with fused or breaker protection in 6 or 8 positions (225–400 A). Modbus-enabled for integration with SCADA and monitoring platforms.
