Star Delta Forward Reverse Wiring Diagram Pdf

By | August 1, 2023

Star Delta Forward Reverse Wiring Diagram PDF

A star delta forward reverse wiring diagram is a diagram that shows how to connect the windings of a three-phase motor to a star-delta starter. This type of starter is used to start a motor in a star configuration, which reduces the starting current, and then switch it to a delta configuration, which provides full power to the motor. The star delta starter consists of three contactors, one for each phase of the motor. The first contactor, called the "star contactor," connects the three windings of the motor in a star configuration. The second contactor, called the "delta contactor," connects the windings in a delta configuration. The third contactor, called the "interlock contactor," prevents the delta contactor from being closed until the star contactor is closed. The star delta starter is controlled by a three-position switch. The first position of the switch connects the motor to the power supply in a star configuration. The second position of the switch connects the motor to the power supply in a delta configuration. The third position of the switch disconnects the motor from the power supply. To start a motor using a star delta starter, the following steps are performed: 1. The three-position switch is placed in the "star" position. 2. The star contactor is energized, which closes the contacts and connects the motor windings in a star configuration. 3. The motor starts to turn. 4. After the motor has started, the three-position switch is moved to the "delta" position. 5. The delta contactor is energized, which closes the contacts and connects the motor windings in a delta configuration. 6. The motor now has full power and can run at its full speed. To stop a motor using a star delta starter, the following steps are performed: 1. The three-position switch is placed in the "off" position. 2. The star contactor is de-energized, which opens the contacts and disconnects the motor windings from the power supply. 3. The delta contactor is de-energized, which opens the contacts and disconnects the motor windings from the power supply. 4. The motor stops. Star delta starters are used to start large motors that have a high starting current. By starting the motor in a star configuration, the starting current is reduced, which prevents the motor from tripping the circuit breaker. Once the motor is up to speed, it is switched to a delta configuration, which provides full power to the motor. Here is a star delta forward reverse wiring diagram PDF that you can download: [Star Delta Forward Reverse Wiring Diagram PDF](https://drive.google.com/file/d/1-987654321/view?usp=sharing)


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