L T Mk1 Star Delta Starter Wiring Diagram. Automatic star delta starter with timer for 3 phase ac motors. Figure 3 1 wiring and control circuit diagram of automatic star delta starter l1 l2 l3 lines s star contacts cs operating coil for star contacts d delta contacts cd operating coil for delta contacts m line contacts cm operating coil for main contacts tr pneumatic timer to time opening contact tc time.
Key diagram mk1 semi automatic a2 b2 c2 to motor terminals c1 a1 b1 a b c 5 a b c to supply r y b p1 p2 p3 p4 h b p1 stop reset p2 p4 p3 k h 5 no start nc nc h r stop reset r y b r y b a b c r y b start mk1 sasd 0. Mk1 semi automatic star delta starter note. R y b red yellow blue 3 phase lines c b general circuit breakermain mai supplyy starδ deltac1 c2 c3 contatcors power diagram o l over load relayno normally opennc normally closed k1 contactor contactor coil k1 no contactor holding coil.
R y b red yellow blue 3 phase lines c b general circuit breakermain mai supplyy starδ deltac1 c2 c3 contatcors power diagram o l over load relayno normally opennc normally closed k1 contactor contactor coil k1 no contactor holding coil.
Mk1 semi automatic star delta starter note. Relay to be set for 0 6 times full load line current. 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. R y b red yellow blue 3 phase lines c b general circuit breakermain mai supplyy starδ deltac1 c2 c3 contatcors power diagram o l over load relayno normally opennc normally closed k1 contactor contactor coil k1 no contactor holding coil.
