ABB star delta starter is a type of motor starter that is used to start a three-phase induction motor. The starter is designed to reduce the starting current and torque of the motor while also providing a smooth start. The use of a star delta starter helps to improve the efficiency of the motor and reduce the wear and tear on the motor.In this article, we will discuss the wiring diagram of the ABB star delta starter in detail. We will also provide some frequently asked questions (FAQ) and tables to help you better understand the wiring diagram.
What is a Star Delta Starter?
A star delta starter is a type of motor starter that is used to start a three-phase induction motor. The starter consists of two contactors, a timer, a thermal overload relay, and a control circuit. The contactors are used to switch the motor windings from the star connection to the delta connection. The timer is used to provide a time delay between the switching of the windings. The thermal overload relay is used to protect the motor from overheating.
Why Use a Star Delta Starter?
The use of a star delta starter provides several benefits, such as:
- Reduction in starting current and torque
- Smooth starting of the motor
- Improved efficiency of the motor
- Reduced wear and tear on the motor
Wiring Diagram of ABB Star Delta Starter
The wiring diagram of the ABB star delta starter consists of several components, including:
- Two contactors (main and delta)
- Timer
- Thermal overload relay
- Control circuit
The wiring diagram is as follows:
| Component | Wire Color | Connection |
|---|---|---|
| Main Contactor | Black | L1 |
| Red | L2 | |
| Blue | L3 | |
| Yellow | Motor U1 | |
| Green | Motor V1 | |
| Brown | Motor W1 | |
| Delta Contactor | White | M1 |
| Yellow | M2 | |
| Green | M3 | |
| Brown | Motor U2 | |
| Blue | Motor V2 | |
| Red | Motor W2 | |
| Timer | Gray | |
| Thermal Overload Relay | Black | L1 |
| Red | L2 | |
| Blue | L3 | |
| Control Circuit | Red | Stop |
| Green | Start |
How to Wire an ABB Star Delta Starter?
Wiring an ABB star delta starter requires some basic knowledge of electrical wiring. Here are the steps to wire the starter:
- Connect the power supply to the main contactor L1, L2, and L3 terminals.
- Connect the motor windings to the main contactor U1, V1, and W1 terminals.
- Connect the timer to the main contactor control circuit terminals.
- Connect the thermal overload relay to the main contactor L1, L2, and L3 terminals.
- Connect the control circuit to the main contactor start and stop terminals.
- Connect the delta contactor M1, M2, and M3 terminals to the motor windings U2, V2, and W2 terminals.
- Connect the control circuit to the delta contactor control circuit terminals.
FAQ
What is the purpose of a star delta starter?
The purpose of a star delta starter is to reduce the starting current and torque of a three-phase induction motor while also providing a smooth start.
What are the benefits of using a star delta starter?
The benefits of using a star delta starter include a reduction in starting current and torque, a smooth starting of the motor, improved efficiency of the motor, and reduced wear and tear on the motor.
How does a star delta starter work?
A star delta starter works by switching the motor windings from the star connection to the delta connection after a time delay.
What are the components of an ABB star delta starter?
The components of an ABB star delta starter include two contactors (main and delta), a timer, a thermal overload relay, and a control circuit.
How do I wire an ABB star delta starter?
To wire an ABB star delta starter, you need to connect the power supply to the main contactor L1, L2, and L3 terminals, connect the motor windings to the main contactor U1, V1, and W1 terminals, connect the timer to the main contactor control circuit terminals, connect the thermal overload relay to the main contactor L1, L2, and L3 terminals, connect the control circuit to the main contactor start and stop terminals, and connect the delta contactor M1, M2, and M3 terminals to the motor windings U2, V2, and W2 terminals.In conclusion, the ABB star delta starter is an essential component of a three-phase induction motor. The use of this starter helps to reduce the starting current and torque, improve the efficiency of the motor, and reduce the wear and tear on the motor. Wiring the star delta starter requires some basic knowledge of electrical wiring, and it is essential to follow the wiring diagram carefully.
