How Star Delta Starters Work - Control Circuit Explained

In this video, we delve deep into the workings of star-delta starters and their control circuit. Understanding the star delta connection is crucial for anyone involved in motor control systems. We will explore the star-delta starter control circuit diagram, breaking down its components and functionality for better comprehension.

Learn how to efficiently wire a star-delta starter and recognise common issues associated with star-delta connections. We'll provide a clear star-delta starter diagram to guide you through the process, ensuring you can implement the wiring correctly.

This video is perfect for electricians, engineers, and enthusiasts wanting to enhance their knowledge of star-delta motor connections. We will also cover the use of timers in star-delta connections and the importance of contactor wiring.

Join us as we simplify the star-delta control wiring and address potential problems you might encounter. By the end of this video, you will have a solid understanding of how to work with star-delta starters and their applications in motor control. Don't miss out on this essential guide!

ost induction motors are controlled by the direct online starter, however, the heavy motor with a heavy load if started using a direct online starter Huge voltage surge(voltage surge can damage electronic equipment, small machines and the contractor that is supplying the same circuit)because of the high current that is drawn from the supply.
Parts that make up the starter

1) 3 Contactors (main contactor, star contactor and delta contactor)
2) Auxiliary contact(with NC) for each contactor
3) On a delay timer
4) Thermo overload relay
5) Control breaker(double-pole)
6) Push-button(2)(start and stop)

Here is how the control works, or click here https://electrecasolutions.com/unders...

When the ON push button starts the circuit by energising the star contactor(S) and the timer(T) at the same time. The star contactor(S) gets energised through NC of the timer(T) through NC of the delta contactor(D). When the star contactor(S) is engaged(energised) it closes its auxiliary contact NO through which the main contactor(M) gets energised.

The circuit will run for the set period normally (a few seconds), and the timer (T) will open NC and close NO through which the delta contactor (D) gets energised.

NOT because the main contactor(M) is energized through the star contactor(S), we don't want it(the main contactor) to go off when the star contactor is disconnected, that's why we make a parallel connection between star contact (Y AUX) and main contactor (M AUX2).

STAR DELTA STARTER VIDEO    • star delta starter connection 3 phase | EL...  
TIMER VIDEO    • Delay Timers Explained - Which One Should ...  
FORWARD REVERSE WIRING DIAGRAM VIDEO    • forward reverse switch wiring  
FORWARD REVERSE WIRING VIDEO    • forward reverse motor control wiring|Conne...  
CONTACTOR SELFHOLDING VIDEO    • The Self-Holding Push Button Explained  

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