Description

The Schneider Electric ATV71HC25N4 delivers superior speed and torque regulation for high-power industrial motors. This 250 kW (400 hp) frequency inverter belongs to the high-performance Altivar 71 series. It manages complex automated systems using advanced motor control algorithms. Furthermore, the unit operates efficiently on three-phase supplies from 380V to 480V AC. It addresses the needs of demanding sectors like mining, hoisting, and material handling. This drive optimizes mechanical performance while significantly reducing energy consumption. Consequently, it extends the service life of large-scale industrial machinery.

Technical Specifications

• Brand: Schneider Electric
• Model Number: ATV71HC25N4
• Product Type: Variable Speed Drive (VFD)
• Motor Power: 250 kW / 400 hp
• Supply Voltage: 380V to 480V AC (Three-Phase)
• Line Current: 463A at 380V / 380A at 480V
• Continuous Output Current: 481A at 2.5 kHz
• Maximum Transient Current: 721.5A for 60 seconds
• EMC Filter: Integrated Class A filter
• Control Modes: Flux Vector Control (FVC) and Sensorless Vector
• Protection Rating: IP20 / IP00 depending on installation
• Communication: Modbus and CANopen integrated

Advanced Torque and System Stability

This Altivar 71 inverter provides exceptional transient overtorque of up to 170% for one minute. It maintains motor stability during high-impact load changes using Energy Adaptation (ENA) technology. Additionally, the unit supports both open-loop and closed-loop configurations for asynchronous and synchronous motors. Integrated safety functions prevent electrical faults like short circuits and phase loss. For braking requirements, the drive manages up to 150% torque with an external resistor. These features ensure reliable operation in environments with extreme duty cycles. Users can also fine-tune performance via the adjustable 2.5 to 8 kHz switching frequency.

Seamless System Integration and Versatility

The ATV71HC25N4 features a modular architecture to support diverse communication protocols and I/O expansion. Engineers can easily interface the drive with complex PLC systems and SCADA networks. Moreover, the robust cooling system allows for continuous operation in high-density electrical cabinets. The unit supports customizable voltage/frequency ratios to match specific motor requirements. Its built-in PI regulator provides precise process control for pressure and flow applications. This drive remains a preferred choice for modernizing large infrastructure projects. It combines rugged industrial durability with the latest Schneider Electric automation standards.