Product Description of ATV71HC25N4

The Schneider Electric / Telemecanique Altivar 71 – Model ATV71HC25N4 is a high-performance industrial Variable Frequency Drive (VFD) engineered for precise speed and torque control of large three-phase AC induction motors. Designed for demanding heavy-duty applications, this 250 kW (400 HP) drive delivers exceptional reliability, energy efficiency, and advanced motor protection in critical process environments such as cement plants, water treatment facilities, steel mills, crushers, conveyors, large pumps, and high-capacity ventilation systems.

The Altivar 71 series incorporates advanced vector control technology, allowing smooth motor acceleration, stable low-speed operation, and high starting torque even under heavy load conditions. With a wide output frequency range from 0 to 500 Hz, operators can accurately regulate motor speed to match process requirements, reducing mechanical stress and extending equipment lifespan. Integrated motor overload protection (Class 10) continuously monitors motor current and temperature models, helping prevent overheating, mechanical jamming damage, and costly downtime.

This drive supports both 50 Hz and 60 Hz power systems and operates within a 380–480 VAC three-phase supply range, making it suitable for global industrial installations. Built-in PID control enables automatic pressure, flow, and level regulation in pump and fan applications, improving process stability and reducing energy consumption. Communication interfaces such as Modbus and CANopen allow seamless integration with PLC, SCADA, and industrial automation networks.

The ATV71HC25N4 also features programmable acceleration and deceleration ramps, DC injection braking, fault diagnostics, and extensive configurable parameters, providing flexible commissioning and easy maintenance. Its robust construction and industrial-grade electronics ensure continuous operation in harsh factory environments.

Overall, the Altivar 71 VFD functions not only as a motor speed controller but as a comprehensive motor management system that enhances productivity, protects equipment, and significantly lowers operating costs in large-scale industrial operations.

Technical Specification