상황
A three-phase induction motor is started in star configuration to reduce starting current, then switched to delta for full-load running using three contactors.
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01
Use main, delta, and star contactors with mechanical interlocking
02
Connect motor windings in star for starting and delta for running
03
Include fuses for each phase
Applies to industrial motor control panels where reduced-voltage starting is required for three-phase induction motors.