2 phase motors are used in various industries such as HVAC, pumps, compressors, and conveyors. These motors have two sets of windings that are displaced by 90 degrees to each other, producing a rotating magnetic field. In this article, we will discuss the wiring diagram of a 2 phase motor.
Wiring Diagram
The wiring diagram for a 2 phase motor is quite simple. It consists of two sets of windings, usually referred to as A and B, with each set containing two coils. Each coil is connected to a power source, which can be AC or DC, depending on the application.
The A and B windings are connected in series, and the midpoint of the two windings is then connected to a common neutral or ground. This configuration is known as a “center-tap” or “split-phase” motor.
When power is applied to the windings, a rotating magnetic field is produced, which in turn, produces torque to drive the motor shaft. The direction of the rotating magnetic field can be reversed by reversing the polarity of the power source.
Types of 2 Phase Motors
There are two types of 2 phase motors: capacitor-start and capacitor-run. Both types use a capacitor to provide a phase shift between the windings, which is necessary for the motor to start and run properly.
The capacitor-start motor has a starting capacitor that is used only during the starting process. Once the motor reaches its operating speed, the capacitor is disconnected from the circuit. This type of motor is used in applications that require high starting torque, such as air compressors and water pumps.
The capacitor-run motor has a permanent capacitor that is connected in series with the windings at all times. This type of motor is used in applications that require constant speed, such as fans and blowers.
Advantages of 2 Phase Motors
There are several advantages of using 2 phase motors:
- Higher torque at low speeds
- Smaller size and lighter weight compared to 3 phase motors
- Lower cost compared to 3 phase motors
- Easier to control and repair
FAQ
| Question | Answer |
|---|---|
| What is a 2 phase motor? | A 2 phase motor has two sets of windings that are displaced by 90 degrees to each other, producing a rotating magnetic field. |
| What is the wiring diagram for a 2 phase motor? | The A and B windings are connected in series and the midpoint of the two windings is connected to a common neutral or ground. |
| What are the types of 2 phase motors? | The types of 2 phase motors are capacitor-start and capacitor-run. |
| What are the advantages of 2 phase motors? | The advantages of 2 phase motors are higher torque at low speeds, smaller size and lighter weight compared to 3 phase motors, lower cost compared to 3 phase motors, and easier to control and repair. |
Conclusion
In conclusion, 2 phase motors are a suitable choice for various industrial applications due to their advantages, wiring simplicity, and reliability. Understanding the wiring diagram of a 2 phase motor is crucial for proper installation, maintenance, and troubleshooting.
