Star Delta starter control wiring diagram is widely used in various industries for starting and controlling the induction motor. It is an electromechanical device that helps to control the starting current of the motor. This article provides you with the detailed information about the 1 star delta starter control wiring diagram, its working principle, and advantages.
What is Star Delta Starter Control Wiring Diagram?
Star Delta Starter Control Wiring Diagram is a type of motor starter that is used to reduce the starting current of the motor. It is also known as Wye-Delta starter. It consists of six terminals, three for the motor and three for the power supply. The motor windings are connected in a star configuration during the starting period, and then changed to a delta configuration during the running period. This reduces the inrush current and protects the motor from damage.
Working Principle of Star Delta Starter Control Wiring Diagram
The working principle of Star Delta starter control wiring diagram is based on the fact that the voltage applied to the motor is reduced when the motor is started in the star configuration. The power supply is first connected to the terminals L1, L2, and L3, and then to the motor terminals U1, V1, and W1 in the star configuration. After a preset time, the contacts of the Star contactor change the motor connection from star to delta, and the motor continues to run in the delta configuration with a reduced voltage. This provides a smooth and gradual start to the motor and reduces the starting current.
The control circuit consists of a timer, a contactor, and overload relays. The timer is used to delay the switching of the contactor from star to delta, and the overload relays protect the motor from overloading.
Advantages of Star Delta Starter Control Wiring Diagram
Following are the advantages of using a star delta starter control wiring diagram:
- Reduces the Inrush Current: The inrush current is the maximum current drawn by the motor when it is started. The star delta starter control wiring diagram helps to reduce the inrush current and protect the motor from damage.
- Smooth and Gradual Start: The star delta starter control wiring diagram provides a smooth and gradual start to the motor, which extends the life of the motor and reduces maintenance costs.
- Cost Effective: The star delta starter control wiring diagram is cost-effective as it does not require any additional components and can be easily installed.
- Efficient: The star delta starter control wiring diagram is an efficient way to start and control the induction motor.
- Minimizes Voltage Drops: The star delta starter control wiring diagram minimizes voltage drops during the starting period, which enhances the performance of the motor.
1 Star Delta Starter Control Wiring Diagram
The following table provides you with the 1 star delta starter control wiring diagram, which consists of six terminals, three for the motor and three for the power supply. The motor windings are connected in a star configuration during the starting period, and then changed to a delta configuration during the running period.
| Terminal | Description | Connection |
| L1 | Line Supply Phase 1 | Connected to Contactor Coil Terminal A1 |
| L2 | Line Supply Phase 2 | Connected to Contactor Coil Terminal A2 |
| L3 | Line Supply Phase 3 | Connected to Contactor Coil Terminal A3 |
| U1 | Motor Terminal | Connected to Star Contactor Terminal 1 |
| V1 | Motor Terminal | Connected to Star Contactor Terminal 2 |
| W1 | Motor Terminal | Connected to Star Contactor Terminal 3 |
FAQs
1. What is the purpose of the star delta starter control wiring diagram?
The purpose of the star delta starter control wiring diagram is to reduce the starting current of the motor and protect the motor from damage.
2. How does the star delta starter control wiring diagram work?
The star delta starter control wiring diagram works by connecting the motor windings in a star configuration during the starting period, and then changing to a delta configuration during the running period. This reduces the inrush current and protects the motor from damage.
3. What are the advantages of using a star delta starter control wiring diagram?
The advantages of using a star delta starter control wiring diagram are that it reduces the inrush current, provides a smooth and gradual start to the motor, is cost-effective, efficient, and minimizes voltage drops during the starting period.
4. What are the components of the star delta starter control wiring diagram?
The components of the star delta starter control wiring diagram are a timer, a contactor, and overload relays.
5. What is the difference between the star delta starter control wiring diagram and direct-on-line motor starter?
The main difference between the star delta starter control wiring diagram and the direct-on-line motor starter is that the former reduces the inrush current and provides a smooth and gradual start to the motor, while the latter starts the motor directly with a full voltage supply.
With this article, you have gained knowledge about the 1 star delta starter control wiring diagram. You have learned about its working principle, advantages, and components. We hope this article has provided you with useful information and helped you understand the concept of the 1 star delta starter control wiring diagram.
