Star Delta Wiring Diagram Control Circuit

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 wiring diagram control circuit. 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. Let s understand the star delta starter diagram. From the left you have the main contactor with the pneumatic timer because your main contactor is always energized in the middle you have the delta contactor with a thermal overload for motor protection in case the motor exceeds the ampere rating set on the thermal overload on the right you have the star contactor which is the first contactor to be energized with the main contactor then when the timer reaches its time limit the star contactor de energizes and the delta contactor energizes. Star delta starter control circuit diagram.

Star delta starter control circuit consist of start push button s1 stop push button s0 timer t1 main contactor k1 star contactor. So this time i want share my simple star delta circuit diagram completed with power and control line circuit i hope it can be as basic reference for all electrician about star delta starter diagram. Here you will learn the connection of star delta starter with three phase motor. In this post you will learn complete star delta starter wiring with timer normally open push button switch and normally close push button switch.

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. 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. Now we are going to share three phase motor connection star delta starter without timer power control diagrams. In my last post i share a star delta starter wiring diagram 3 phase motor connection.

But high load 3 phase motor we use the star delta starter for motor controlling. Star delta starter control circuit diagram is today topic. Star delta starter three phase motor connection without timer power control wiring diagrams. As shown in the fig.

For three phase motor we use the direct online starter but mostly for small three phase motor. Here the circuit diagram of star delta starter explained in detail. The power circuit diagram and control circuit diagram of an automatic star delta starter are explained below.