3 phase motor wiring diagram star delta pdf. A dual starter connects the motor terminals directly to the power supplyhence the motor is subjected to the full voltage of the power supplyconsequently high starting current flows through the motor. Electric wires for controlling wiring star delta starter wiring for 3 phase motor diagram here i have shown the complete star delta starter wiring diagram 3 phase. Automatic star delta starter with timer for 3 phase ac motors. The three phase supply shown with red yellow and blue coolers all connections with a 3 phase induction motor.
In this tutorial we will show the star delta y d 3 phase induction ac motor starting method by automatic star delta starter with timer with schematic power control and wiring diagram as well as how star delta starter works and their applications with advantages and disadvantages. R y b red yellow blue 3 phase linescb general circuit breakermain mai supplyy stard deltac1 c2 c3 contatcors power diagramol over load relayno normally opennc normally closed k1 contactor contactor coil k1no contactor holding coil. Three phase motor connection stardelta y d reverse and forward with timer power control diagram as we have already shared the starting method of three phase motor by star delta starter with timer circuit power and control circuits. Star delta connection diagram and working principle.
Power control wiring diagram of star delta starter. Three phase motor connection stardelta without timer power control diagrams.