how a 3 phase motor starter works?

how a 3 phase motor starter works?
Three-phase motors use starters due to their high starting torque. ... When the motor's switch is turned on, voltage flows through the contactor's coil, creating a magnetic field. This magnetic field pulls on the contactor's points, allowing electricity to flow to the motor's windings.
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Does a 3 phase motor need a starter?
Three phase motors do not require a starter circuit. However the start up current surge can be 6 or more times the run current.
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How does a 3 phase starter work?
The working principle of a DOL starter begins with the connection to the 3 - phase main with the motor. The control circuit is connected to any two phases and energized from them only. When we press the start button, the current flows through the contactor coil (magnetizing coil) and control circuit also. May 3, 2021
Full answer in: www.electrical4u.com
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How does a motor starter work?
Motor starters consist of two devices—a contactor that completes the circuit to the motor and an overload relay that monitors the current the motor is drawing. ... When a condition occurs that causes the motor to exceed the maximum load, the device opens the motor starter control circuit and the motor is turned off.
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What is the main role of the starter in 3 phase induction motor?
The purpose of a starter is not to just start the motor, but it performs the two main functions. They are as follows: To reduce the heavy starting current, To provide overload and under-voltage protection.
Full answer in: circuitglobe.com