Control Wiring Diagram For Star Delta Starter. Here you can see the control circuit diagram of automatic star delta starter. As you see in the above star delta starter diagram first an nc push button switch is connected to stop the operation.
One for turning the motor on and off but to better control the motors run request you can add a contactor in the way of incoming power. Here you can see the control circuit diagram of automatic star delta starter. For control wiring of three phase star delta starter with timer r y b red yellow blue 3 phase lines cb general circuit breaker main main supply y star δ delta.
Star delta starter control circuit consist of start push button s1 stop push button s0 timer t1 main contactor k1 star contactor k3 delta contactor k4.
The on delay timer diagram is also shown in the diagram. Motor star delta starter working principle. Star delta control diagram. A star delta starter is the most commonly used method for the starting of a 3 phase induction motor.