AC Drive

Which also named Frequency Inverter, Adjustable Speed Drive (ASD), Variable Speed Drive (VSD) and Variable Frequency Drive (VFD) by manufacturers and users.

The main function of an AC drive is to vary the speed of a three phase AC motor. AC drives also provide non-emergency start/stop control, acceleration and deceleration, and overcurrent, overvoltage and phase loss protection. In addition, AC drives can reduce the ac motor start-up inrush current by accelerating the motor gradually.

AC drive offers a way to control an electric motor's speed. In applications where the load is subject to change, speed control provides an excellent way to save energy.
Sizing AC drive to the motor based on the maximum current requirements under peak torque demands. Do not size the AC drive based on horsepower ratings.
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