Fully Automatic Star Delta Starter Wiring Diagram. For control wiring of three phase star delta starter with timer r y b red yellow blue 3 phase lines c b general circuit breaker. Star delta starter y d is a common type of three phase 3 phase induction motor starters generally used in low starting torque motors.
The contactors are smaller than the single contactor used in a direct on line starter as they are controlling winding currents only. Main main supply. The currents through the winding are 1 3 0 58 58 of the current in the line.
R y b red yellow blue 3 phase lines c b general circuit breakermain mai supplyy starĪ“ deltac1 c2 c3 contatcors power diagram o l over load relayno normally opennc normally closed k1 contactor contactor coil k1 no contactor holding coil normally open k1 k2 k3 contators for control diagram.
Power control wiring diagram of star delta starter. The contactors are smaller than the single contactor used in a direct on line starter as they are controlling winding currents only. 3 the star delta starter is manufactured from three contactors a timer and a thermal overload. C1 c2 c3 contatcors for power control diagram o l over load relay.
