Soft Starters
Soft Starters
A Soft Starter is a solid-state device that protects AC motors by controlling the sudden inrush of current during start-up. By gradually increasing the voltage, it ensures a smooth and steady acceleration, reducing the risk of electrical and mechanical shocks.
Soft starters are used only during starting and stopping, helping to prevent damage to motors and connected machinery while extending their lifespan. They are sized based on the motor’s horsepower/kW and operating voltage, making them a reliable choice for safe and efficient motor operation.
Types of Soft Starters
HFSR Soft Starter
- Designed for slip ring induction motors.
- Provides smooth, step-less control of motor starting.
- Uses three-phase controlled resistance.
- Ensures low starting current & high starting torque.
- Eliminates mechanical stress on equipment.
- Compact design with user-friendly operation.
- Widely used in cranes, compressors, pumps, fans, conveyors.
Slip Ring Motor Soft Starter (SMSC)
- Specially developed for large slip ring induction motors.
- Facilitates gradual acceleration and avoids sudden jerks.
- Protects motor & driven equipment from high inrush current.
- Allows adjustable resistance control during start-up.
- Reduces voltage dips in electrical network.
- Increases equipment life by minimizing wear & tear.
- Suitable for heavy-duty applications like steel plants, cement, mining, paper mills.