Star delta starter control wiring diagram pdf. There is minor correction is require to change printed in boxes sequence of 3 phase wires from w2 v2 u2 to w2 u2 v2 to get delta connection properly. In the diagram of power circuit of star delta starter u2 and v2 of 3 phase motor should be connect to 4 and 6 respectively instead of u2 and v2 are connected to 6 and 4 of delta contector km2. Aug 9, 2014 - Automatic Star / Delta Starter (Y-Δ) with Timer for 3-Phase Induction Motor - Star - Delta Starter Wiring, Power & Control Wiring & Connection Diagrams. How to wire Star Delta Starter with Three Phase AC Motors? This tool can help you to select contactor for star-delta, Overload relay, and MCB or MCCB for star delta starter circuits. Large induction motors, when started directly on line, draw very high currents. Therefore star-delta starters are widely used for motors rated over 10hp or 7.5kW (even small motors can be started using the star-delta method). Freelance Nursing and Health Writer. Home; About Me; Hire Me; Blog; Contact Me; star delta starter control diagram. January 28, 2022 The Star/Delta starter is manufactured from three contactors, a timer and a thermal overload. The contactors are smaller than the single contactor used in a Direct on Line starter as they are controlling winding currents only. The currents through the winding are 1/root 3 (58%) of the current in the line.