Key Features

• Pure sine wave output ensures clean, stable power for sensitive electronics
• Dual MPPT solar inputs increase solar utilization and charging speed
• Parallel-ready design supports system expansions up to 6 units
• Comprehensive protection suite safeguards against short-circuits, overloads, over/under voltage, and high temperature
• Multiple communication ports (USB/RS232/RS485/Dry-contact/BMS/CAN) for easy monitoring and control

Perfect For

• Off-grid homes, cabins, and remote locations
• Solar + battery backup systems
• Small commercial installations
• Users requiring reliable power and monitoring capability

Battery Specs

• Battery Type: Li-ion / Lead-Acid / User Defined
• Rated Battery Voltage: 48Vdc
• Voltage Range: 40~60Vdc
• Max. MPPT Charging Current: 60A
• Max. Mains/Generator Charging Current: 60A
• Max. Hybrid Charging Current: 120A

PV Input

• MPPT Trackers: 1
• Max. PV Array Power: 3400W
• Max. Input Current: 40A
• Max. Open Circuit Voltage: 145Vdc
• MPPT Voltage Range: 60~115Vdc

Efficiency

• MPPT Tracking Efficiency: 99.9%
• Max. Inverter Efficiency: 92%

Technical Specifications

• Model: HESS‑OF‑S‑3.3K
• Inverter Type: Pure Sine Wave Off‑Grid
• Rated Output Power: 3300W
• Max. Peak Power: 6000VA
• Rated Output Voltage: 230Vac
• Load Capacity of Motors: 2HP
• Rated AC Frequency: 50Hz/60Hz
• Waveform: Pure Sine Wave
• Switch Time: 10ms (typical)

General

• Dimensions: 378 x 280 x 103 mm
• Weight: 6.2kg
• Protection Degree: IP20 (Indoor Only)
• Operating Temp Range: -10°C ~ 55°C
• Noise: <60dB
• Cooling Method: Intelligent fan

Communication & Certification

• Embedded Interfaces: RS485, CAN, USB, Dry contact
• External Modules (Optional): WiFi, GPRS
• Safety: CE (IEC 62109-1), CETL (UL 1741, C22.2 No.107.1)
• EMC: EN61000
• RoHS: Yes