Star Delta 3-phase Motor Automatic starter with Timer

The Star-Delta (Y-Δ) 3-phase Motor Starting Method by Automatic star-delta starter with Timer.

Abbreviations: ( FOR Star Delta 3-phase Motor Automatic starter with Timer)

R , Y, B = Red, Yellow, Blue ( 3 Phase Lines)
C.B = General Circuit Breaker
Main = Mai Supply
Y = Star
Δ = Delta
1a = Timer
C1, C2, C3 = Contatcors (For Power & Control Diagram)
O/L = Over Load Relay
NO = Normally Open
NC = Normally Closed K1 = Contactor (Contactor coil)
K1/NO = Contactor Holding Coil (Normally Open)