Automatic Star Delta Control Circuit

Electrical, single phase Line Wiring

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Automatic star delta control circuit:

This diagram shows how to make an automatic star delta control circuit. In this circuit, we use a DP MCB ( Double Pole Miniature Circuit Breaker ), 3 magnetic contactors, an overload, an 8-pin relay, push button ( start and stop ). First, we input power to DP MCB, then input power line from DP MCB to Magnetic contactors like this diagram. If you want to connect this circuit like our diagram, please check our youtube video below the link. 

Diagram of Automatic star delta control circuit:

Automatic star delta control circuit

Components needed For this Project:

You can get the components from any of the sites below:

  1. DP MCB [See Buy Click Amazon]
  2. Magnetic Contactor [See Buy Click Amazon]
  3. 8-Pin Relay [See Buy Click Amazon]
  4. Start Button [See Buy Click Amazon]
  5. Stop Button [See Buy Click Amazon]
  6. Indicator Light [See Buy Click Amazon]

*Please note: These are affiliate links. I may make a commission if you buy the components through these links. I would appreciate your support in this way!

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Components used to make the Automatic star delta control circuit:

01. DP MCB:

DP MCB In Two Pole MCB, switching & protection is affected in phases and the neutral. A Double Pole or DP Switch is a Switch that Controls two Circuits at the same time. In terms of Residential Switching, this Normally means it Switches the live and Neutral at the same time. In Layperson Terms, Double Pole switches or DP Switches are Exclusively Designed to Control two Different Electrical Circuits at the same time, which allows the Appliances to Isolate in a safe and reliable manner. Fan or light Combinations and Medical Equipment are some of the many applications for DP Electrical Switches.

02. Magnetic Contactor:

A magnetic contactor is an electromagnetic switching device. It is generally used for controlling three-phase motors. The operation of a magnetic contactor is similar to that of a relay, but a relay is used for low-power or low-voltage connections, and a magnetic contactor is used for high-power or high-voltage connections. As soon as the supply is applied to the magnetic contactor coil, its normally open contacts are closed and normally closed contacts are opened and the associated devices are also operated. This is how a magnetic contactor works.

03. 8-Pin Relay:

The most popular relay for automation work is the 8 Pin Relay. 8 pin relay has DC or AC coil as the main part. which is connected to two pins. There are two common parts. Underneath a Common part are an NO and an NC part. No part is normally open with the common part and the NC part is normally closed. The timer base used for automation is the same as the 8-relay base. That is, switching can be done using the timer base. This is basically how a relay switch works.

04. Start Button:

NO (Normally Open) Terms Refer to a Type of Dry Contact or Wet Contact. A ‘Push to Make’ Switch Allows Electricity to flow Between its two contacts when held in. When the button is released, the Circuit is broken. This type of Switch has also known as A Normally Open (NO) Switch. As its name implies, a Normally Open (NO) Switch Contact or “a Contact” is a Switch. Put very simply, a Normally Open Sensor will have no Current When in a Normal State But When it Enters an Alarm State it will have +5V applied to the Circuit.

05. Stop Button:

An NC (Normally Closed) Push Button is a Push Button That, In Its Default State, Makes Electrical Contact With The Circuit. An NC (Normally Closed) Push Button is a Push Button that, in its Default State, Makes electrical Contact With the Circuit. When The Button Is Pressed Down, The Switch no Longer Makes Electrical Contact And The Circuit is Now Open. When The Button is Not Pressed, Electricity Can Flow, But When it is Pressed The Circuit is Broken. This type Of Switch is Also known As a Normally Closed (NC) Switch.

06. Indicator Light:

An indicator lamp just Sounds Technical, Sometimes it’s called a “Supervisory” light Indicator. Indicator lights are amber in color and can be located at the Front, the Rear, and Sometimes at the Side of the car on both the left And Right-hand sides. The Common colors used by Indicator lamps are red, yellow, blue, white, and green. A Panel Indicator Lamp Generally has up to 5 Differently Colored Segments to Indicate Various Conditions on the Machine or Process

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