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Soft-Starter
The "Soft Starter" can be used to limit the surge of current known as “inrush current” and torque of the electric motors, resulting in a safer, smoother and gradual start-up.
Soft starters will protect your electric motor from possible damage and at the same time extend the lifespan of your electric motor and the whole system by declining the heating caused by frequent start/stops, reducing the mechanical stress on the motor, its shaft and reducing the electrodynamic stresses on the power cables.
FAQ
What is the soft-start of an electric motor?
Soft-starter is used to connect between power supply and motor. It will make the motor input voltage from 0 gradually rise to thefull voltage of the motor according the default function relations. It is reached by control its internal thyristor conduction angle. This process is called the soft start. During this process, motor starting torque increase gradually,and speed will also increase gradually.
What kinds of starting modes are there?
There are six starting modes in generally. 1. Current-limit start 2. Voltage ramp start 3. Torque control + current limit 4. Torque control + voltage ramp 5. Current ramp start 6. Double closed loop