- Contractor Switch – 3
- Overload – 1
- Push button – 2
- Timer – 1
Procedure: First, draw the circuit for the star delta auto control circuit. Then make the power circuit for that accordingly. Add all the items and equipment on the circuit board. Then, check the power circuit with a multi-meter and give 230V power supply. Then, set the motor to the third power circuit. Then connect it to the main power supply.
Activity: When S1 activates, K3 and K1 contactors start and switch on the motor in the star mode. Then, when the timer stops, K3 contactor stops, K2 and K1 contactors start and switch on the motor in the delta mode.
Conclusion: Circuit activated correctly