Star And Delta Connection In Motor Diagram. Electrical motors 12 lead dual voltage wye start delta run both voltages or 6 lead single voltage wye start delta run motors designed by us motors for wye start delta run may also be used for across the line starting using only the delta connection. The main and the star contactors are closed and the delta contactor is open.
In star connection each winding receives 230 volts and in delta connection each winding receives 415 volts. A motor above 10 hp is driven by a star. The main and the star contactors are closed and the delta contactor is open.
You can see in the below figure i have shown the star delta starter connection with a three phase motor.
A motor from one to 3 hp is run in a star connection. Then a thermal overload relay is connected for the protection purpose. The main and the star contactors are closed and the delta contactor is open. In this tutorial we will show the star delta y δ 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.
