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Star delta starter is a type of motor starter used to reduce the starting current of a motor.
Consists of three contactors and a timer
Initially, the motor is connected in star configuration to reduce the starting current
After a set time, the motor is switched to delta configuration for normal operation
Used for high power motors
Reduces voltage drop and prevents damage to the motor
Star delta starter circuit is used to reduce the starting current of induction motors.
The circuit consists of three contactors, a timer, and an overload relay.
During starting, the motor is connected in star configuration to reduce the starting current.
After a set time, the motor is switched to delta configuration for normal operation.
The overload relay protects the motor from excessive current.
Example: A 3-phase induct...
posted on 14 Jul 2017
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