Star Delta Control Circuit Diagram Pdf. A dual starter connects the motor terminals directly to the power supply hence the motor is subjected to the full voltage of the power supply consequently high starting current flows through the motor. The on delay timer diagram is also shown in the diagram.
At a starting time after pressing the start push button single phase supply activates the timer timer contact 17 18 closed and nc contact 17 28 get open. In the above star delta starter control circuit wiring diagram with timer and normally close push buttonnormally open push button switch. This is one of circuit diagram design for star delta it have variant design of star delta diagram depend on designer style for motor control the important thing is it can operated with correct sequence and operation to avoid motor from serious damage or burn out.
Voltage code control circuit the star delta starters are delivered with their control v 50 hz v 60 hz 8 circuit not connected to the power circuit.
Download full pdf circuit diagram 1 download full pdf circuit diagram 2 note. Control circuit fuse typical circuit diagram of star delta starter main circuit control circuit for push button control momentary command s0 off push button s1 on push button k1 line contactor k2 star contactor k3 delta contactor k4 star delta timer 7pu60 20 f2 overload relay f1 backup fuse. At a starting time after pressing the start push button single phase supply activates the timer timer contact 17 18 closed and nc contact 17 28 get open. For other short circuit protection devices please consult our co ordination tables control circuit control voltage code designed for separate control supply.
