Fabrication Of Automatic Star Delta Starter Using Relay And GSM Module By Utkarsh Tiwari.pptx

Three phase Star Delta Start to using Relay and GSM Module

1. WELCOME TO GOVERNMENT POLYTECHNIC KULPAHAD MAHOBA

2. ELECTRICAL Engineering DEPARTMENT Session-2021-2024 Project Name – “FABRICATION OF AUTOMATIC STA R- DELTA STARTER USING RELAY AND GSM MODULE “ Submitted To- Er.Surendra Singh (H.O.D) Submitted By- Utkarsh , Shivam , Karan,Hariom,Nitesh,Chaman,Golu,Dipanshu

3. Introduction What is Starter ? As the name suggests, a starter is an electrical device which controls the electrical power for starting a motor. These electrical devices are also used for the purpose of stopping, reversing and protecting electric motors.

4. Classification of Starter We are generally use this types of starter- Autotran s former Starter Direct On Line (DOL) Starter Roter Resistance Starter Manual Starter Star Delta Starter

5. Star Delta Starter Here we will learn about Star Delta Starter- Star delta starters are another device that may be used to reduce current demand during motor startup. It is often used for starting three-phase induction motors, but can only be used when starting the motor without load and when the required starting current is relatively low.

6. Principle of Star Delta Starter A star delta starter will start a motor with a star-connected stator winding. When the motor reaches about 80% of its full load speed, it will begin to run in a delta-connected stator winding 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. 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.

7. Required Equipment in Star Delta Starter Contactor Main Contractor Star contactor Delta Contactor Timer On Delay Thermal Over Load Relay Volt Meter Ameter

8. Required Equipment in Star Delta Starter M.C.B
Push On Button
Push Off Button Ind icat ing Lights GSM Module (A7670C 4G GSM Module)

9. Contactor

10. Contactor Contactor is a device which is used to make and break the circuit When the current passes through the electromagnet a magnetic field is produce which attracts the moving core of the contactor together when the contactor coil is de-energized gravity or spring return the electromagnetic core its initial position.

11. Contactor Feature: Contactor is a relay that used for switching power. They usually handle very heavy load like all electric motor, lightning and heating equipment.

12. Main contactor Main contactor is the driver contactor which is used to drive star and delta contactor. It reduces the three phase supply from three phase MCB and goes to overload relay .

13. Star Contactor

14. Star Contactor Star contactor connects the induction motor in star configuration and reduces the supply voltage to induction motor in order to limit the starting current of motor. It receives the three phase supply from output delta contactor and its output ends are short circuited.

15. Delta Contactor

16. Delta Contactor Delta contactor connects the motor in delta configuration and supplies rated supply voltage to motor. It receives three phase supply from input side of driver contactor and its three phase output goes to induction motor.

17. Timer On Delay

18. Timer On Delay In our project Timer is the brain of project (Starter), timer manages time for which is on first we use On-Delay mode of timer in our project.
We set some time for star connection i.e. from NC supply gives to star contactor.
After some time completion it will changeover to NO that means it will open. And No gives to Delta Contactor after completion of time it will converted into NC means it closes the circuit of Delta contactor. So delta contactor is energized and motor run in delta configuration this process is occurs rapidly.

19. Thermal Over Load Relay

20. Thermal Over Load Relay In our project we use the overload relay which is externally connected to the main contactor and it is used to protect the motor from single phasing and event of short circuit or being overloaded and overheating. It has automatic and manual reset modes and it has ambient temperature coefficient. Overload relay is the protecting component of our project.

21. Thermal Over Load Relay Features: 1. Inbuilt single phasing protection.
2. Suitable for direct/separate mounting.
3. Auto and manual reset motor.

22. Volt Meter

23. Volt Meter Voltmeter is a device in which a large resistance is connected in series with a galvanometer. Voltmeters always connect in parallel in circuits because its resistance is very large. Voltmeter tells us the voltage difference between two points in the circuit.

24. Ameter

25. Ameter The device used to measure an electric current in a circuit is called an ampere meter or ammeter. An ammeter is used in series with the part of the circuit to measure the passing current to measure direct or alternating electric current. An ammeter only measures electric current when it is set up correctly.

26. Miniature Circuit Breaker

27. Miniature Circuit Breaker (1-Φ) The single phase MCB is used to protect the control circuit of the project. It automatically switches off the electrical circuit during abnormal condition of the circuit means in overload condition as well as faulty condition. It is also use as Switch of our control circuit.

28. Miniature Circuit Breaker(3-Φ) We use three phase MCB for Protection of the power circuit of the project the main function is interrupting the continuity of electrical flow through the Circuit once a fault is detected in simple terms it is a switch which automatically turn off when the current flowing through it passes the maximum allowable limit.

29. Push ON/OFF Button

30. Push ON/OFF Button A push button is momentary or non latching switch which causes a temporary change in the state of electrical circuit.
Only while the switch is physically actuated an automatic mechanism that is a spring returns the switch to its default position immediately after restoring the initial circuit condition.
In our project start button is NO and the stop button is NC. NO : Normally open NC : Normally closed.

31. Indicator

32. Indicator Indicator indicates condition of circuit.
1. Red Indicator indicates the:-Stop condition of circuit.
2. Green indicator indicates the: Start condition of circuit.
3. Yellow Indicator indicates the:-Trip condition of circuit that is it will be glow whenever fault occurs.
4. This are operate in single phase 230volt AC.

33. GSM Module

34. GSM Module In GSM based, the Pump Controllers (Mobile Pump Starter) are specifically design to operate remote located submersible pumps and motors for benefit of farmers, agriculture people and industries where wireless pump and motor control required. In GSM Module when we call our module contact number then it operates the relay and energized the relay of motor starter and turn on the circuit of push on button.

35. Circuit Diagram

36. THANK YOU