Star Delta Motor Control Circuit Diagram

Automatic star delta starter with timer for 3 phase ac motors.

Star delta motor control circuit diagram. A star delta starter is a type of reduced voltage starter we use it to reduce the starting current of the motor without using any external device or apparatus. Power control wiring diagram of star delta starter. For three phase motor we use the direct online starter but mostly for small three phase motor. This is a big advantage of a star delta starter as it typically has around 1 3 of the inrush current compared to a dol starter.

There is minor correction is require to change printed in boxes sequence of 3 phase wires from w2 v2 u2 to w2 u2 v2 to get delta connection properly. Star delta starter wiring diagram this post is about the main wiring connection of three phase motor with star delta starter and control wiring diagram of star delta starter. But high load 3 phase motor we use the star delta starter for motor. Here the circuit diagram of star delta starter explained in detail here you will learn the connection of star delta starter with three phase motor the power circuit diagram and control circuit diagram of an automatic star delta starter are explained below let s understand the star delta starter diagram.

R y b red yellow blue 3 phase lines c b general circuit breakermain mai supplyy starδ deltac1 c2 c3 contatcors power diagram o l over load relayno normally opennc normally closed k1 contactor contactor coil k1 no contactor holding coil. Star delta connection dol starter control and. In the diagram of power circuit of star delta starter u2 and v2 of 3 phase motor should be connect to 4 and 6 respectively instead of u2 and v2 are connected to 6 and 4 of delta contector km2. The most active post in electrical engineering centre blog is star delta starter and star delta motor connection i received many comments and request for star delta circuit diagram.

In this tutorial we will show the star delta y δ 3 phase induction ac motor starting method by automatic star delta starter with timer with schematic power control and wiring diagram as well as how star delta starter works and their applications with advantages and disadvantages.