The Schneider Electric Altivar 61 Variable Frequency Drive (VFD), model ATV61HD15N4Z, is a three‑phase AC variable speed drive designed for pumping and ventilation machine applications. It provides efficient motor speed and torque control for three‑phase motors rated up to 15 kW (20 HP) on a 380…480 V AC supply. The drive features an integrated Level 3 EMC filter, a heatsink assembly for thermal management, and supports multiple motor control profiles including U/f and sensorless flux vector control. It includes Modbus and CANopen communication protocols for system integration and flexible control.