Explain Soft Starters With Diagram

 In this type of starter starting  voltage is reduced by the help of an electronic controller called thyristor.

> Thyristors are connected reverse parallel across each phase of the stator winding.

> During positive half cycle SCR1,SCR2 and SCR5 conducted

> During negative half cycle SCR4,SCR3 & SCR6 conduct

> Voltage can be controlled by giving firing pulses to the gate terminal. 

> A PCB controls the firing timings.


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