SolaX X3-ULT  Three-Phase On-Grid Inverter – 15kW / 30kW

The SolaX X3-ULT is a high-efficiency three-phase on-grid hybrid inverter designed for modern PV systems. It offers excellent solar harvesting performance, advanced safety features, and strong flexibility for multi-orientation rooftops.

Key Benefits

• High PV performance: 3 MPPT trackers for multi-orientation arrays, with up to 36A input current per MPPT.
• Oversizing support: Up to 200% PV oversizing and 110% AC overloading (model dependent).
• Parallel capable: Supports parallel operation up to 10 inverters (off-grid and on-grid)
• Fast backup (EPS): UPS-level switchover < 10 ms, with up to 200% EPS output for 10 seconds (with battery connected).
• Smart energy management: Compatible with smart load control such as heat pumps and EV chargers.
• Advanced diagnostics: Global MPP scan and built-in I-V curve diagnosis.
• Enhanced safety: Type II surge protection on both DC and AC sides; AFCI support (optional).
• Outdoor ready: IP66 enclosure suitable for indoor or outdoor installation.

Available Models

Core Technical Specifications

PV (Solar) Input

• Max PV input voltage: 1000 V
• Nominal PV input voltage: 600 V
• Operating voltage range: 120 – 950V
• Start-up voltage: 200 V
• MPPT / strings: 3 MPPT (2 string per MPPT)
• Max input current per MPPT: 36 A
• Max short-circuit current per MPPT: 45 A

Battery (High Voltage)

• Battery type: Lithium
• Battery voltage range: 120 – 800 V
• Max charge / discharge current: up to 60 A (30 A × 2 ports)

EPS (Backup / Off-Grid Output) – with Battery

• Rated EPS voltage / frequency: 3W / N / PE, 230 / 400 a.c. V
• Peak EPS output: up to 2× rated power for 10 seconds
• Switchover time: < 10 ms

Efficiency

• Maximum efficiency: 98.0%
• European efficiency: 97.7%

Build, Environment & Connectivity

• Ingress protection: IP66
• Operating temperature: -35°C to 60°C
• Maximum altitude: 3000 m
• Dimensions (W × H × D): 696× 526 × 240mm
• Net weight: 47.5 / 48.5 kg
• Cooling: Smart Air Cooling
• Night-time consumption: < 5 W
• Communication options: RS485, DRM, CT, Meter, WiFi, LAN, 4G

Safety & Protection

• DC & AC Type II Surge Protection
• Anti-islanding protection
• Residual current detection
• DC reverse polarity protection
• Over/under voltage and frequency protection
• Optional AFCI and Rapid Shutdown compatibility

Important Notes

• This inverter is designed for AU/NZ compliance as per the referenced datasheet.
• PV input voltage above the specified maximum may damage the inverter. Ensure system design remains within limits.
• Some smart features listed by the manufacturer may be future upgrades depending on firmware/region.