What is Star Delta Starte conection and how it works

What is Star Delta Starte conection and how it works

Three phase induction motor has a Stater and a Rotor. Stater has 3 phase winding. Which is connected to the three phase AC supply. But the induction motor requires a lot of power to start. If starting current is compared to full load current then starting current is 6 to 7 times full load current. Too much current can cause the motor to overheat and the winding to burn out. The motor starter is used so that there is no danger or damage to the motor. And in this post you will be given complete information related to Star Delta Motor Connection Hindi, Star Connection Diagram In Hindi, Star Connection In Hindi, Star Delta.

The Star Delta Starter uses 3 contractors, 1 inferior load relay, 1 NO push button, 1 NC push button and a timer. The timer is used to close the Star Contractor and start the Delta Contractor shortly thereafter. The Star Delta Starter has two types of wiring.

Star Delta Motor Connection Hindi

As we mentioned, the Star Delta Starter has two types of wiring, the first being the power wiring which is connected to the motor. In the motor where Star Delta Starter is used, you will find 6 terminals and you have to connect them with 6 wires from Star Delta Starter.

Above you can see the power diagram of Star Delta where you have to connect the wire of MAIN contractor directly with the motor and take special care to place the wire of MAIN contactor on the motor according to U1, V1, W1 series. To connect to. If you add blue wire to U1 then you have to add red wire to U2. If you add yellow wire to V1 then you have to add blue wire to V2. If you add red wire to W1 then you have to add yellow wire to W2 .

In this you just have to keep this in mind while wiring on the contactor. That if you put red, yellow, blue wire on one side of the contractor. So on the other side of the same sequence you have to put red, yellow and blue wire. And on the other side of the star contactor you have to connect the three phases by looping.

You have to connect the wire coming from Delta and Star contractor to the motor keeping V2, W2, U2 in mind otherwise your motor may be damaged then look at the diagram given above and connect the motor in the same way. .

Star Delta Controlling Diagram In Hindi

Star Delta Starter Control Circuit Diagram With Timer In Hindi - It is very easy to do the controlling wiring in Star Delta Starter but many people do not understand it easily because inside it we have to interlock the Delta Contractor with the Star Contractor. And Star Contractor has to be interlocked with Delta Contactor. So that only one of these two contractors is ON at a time.

For Star Delta Starter you will need some equipment which you will make Star Delta Starter. The list is given to you below.

NC Push Button

NO Push Button

Overload Relay

3 Contactor

Timer

Its controlling diagram is very simple which you can see in the picture above. But first you need to understand some points here. If you can see NO and NC written in the above diagram, then first of all you should understand this point.

NC stands for Normally Closed. So if you find NC written somewhere then it means all the connections there are connected. Here you are given NC Push Button then it means you can turn on the circuit without pressing this button. But NC Push Button is followed by NO Push Button. So NO means. Normally Open means that wherever you see NO written, the connection is not connected.

But apart from this you will also see NC here NO NO Contractor the way they work is a bit different when your contractor is closed there is no supply of any kind then its NC points are interconnected and connected to them Can be supplied. But as soon as the contactor is ON, NC points become NO and the supply between the two terminals is cut off. So this is what you have to keep in mind in this circuit. That the NC point works when the contactor is closed. And the NC point does not work when the contactor is ON.

The way Star Delta Starter works is very simple and you can easily understand it. You can see how it will be connected in the diagram above. You will get A1 point in all the three contactors and in the timer where you have to connect the supply wire. But this wire will be connected directly to MAIN Contractor and Timer. And will be connected to the NC terminal of the Star contactor on the Delta contractor for interlocking. And will be connected to the NC terminal of the Delta contactor on the Star contractor.

So the first time you press the NO Push Button, the Supply MAIN will come to the contactor and timer. And the Star contactor will be connected to the NC point of the timer. So as soon as you press NO Push Button, MAIN contactor and Star contactor will be ON. And a few seconds after that, after the amount of time we have filled in the timer, the supply to the NC terminal of the timer will stop so that our Star contractor will stop. And the timer will start supplying at the NO terminal so that our Delta contractor will start. Thus there will be a change over in the Star Delta Starter. And when you press the NC Push Button, the supply of the whole circuit will stop.

Note that to HOLD the supply to the MAIN contractor we will connect a wire from the terminal of the NC Push Button to the NO terminal of the MAIN contactor and connect the other NO terminal of the MAIN contactor to the A1 terminal of the MAIN contactor That as soon as the supply starts in the MAIN contactor it will be held from the NO terminal of the MAIN contactor.

So this is how Star Delta Starter works In this post you will find Star Delta Starter Connection Picture Star Delta Starter Theory in Hindi Star Delta Starter Diagram Star Delta Motor Connection star delta starter working principle star delta starter working principle star connection star delta diagram of Complete information is given about. If you have any other questions or suggestions, please comment below