SRG Power Control System Electrical Designer Interview Questions and Answers

Star-delta starter is a type of reduced voltage starter used in induction motors to reduce starting current.

• Consists of a star contactor for starting and a delta contactor for running

• Reduces starting current by initially connecting the motor windings in star configuration

• Switches to delta configuration once motor reaches desired speed

• Commonly used in applications where high starting current is a concern

Star delta starter is used to reduce the starting current of induction motors.

• Reduces starting current by initially connecting the motor windings in a star configuration and then switching to delta configuration.

• Used for large induction motors to prevent damage to the motor and reduce voltage drop in the supply.

• Commonly used in industries where high starting torque is required, such as in conveyor belts or pumps.