Schneider Electric Soft Starters
Schneider Electric soft starters provide dependable, efficient motor control for both simple and complex machines such as centrifugal and piston pumps, fans, screw compressors and material handling equipment. They enable smooth machine starts and stops, avoiding mechanical stresses and extending service life. Besides being effective and reliable, these soft starters are mechanically sound. They don't have the common weak points of other soft starters, such as overheating or bypass relay failure (which can cause energizing of the motor when it's supposed to be off). They avoid these common failures in two ways: by using strong, essential components in the electronics, and by controlling the essential outputs of the soft starter in an energy-efficient manner.
The Altistart 22 is one of the soft starters made by Schneider Electric. In addition to the standard soft starter functions, like feeding 3-phase asynchronous motors in supply line connection, the Altistart 22 has some advanced soft starter features. One of these features is torque control. The Altistart 22 uses space-vector modulation to achieve torque control during starting. By modulating not just the voltage but also the phases of the motor, the soft starter achieves much smoother starting than a normal soft starter.
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