14+ Star Delta Power Circuit. The star contactor serves to initially short the secondary terminal of the motor u2, v2, w2 for the start sequence during the initial run of the motor from standstill. The power circuit diagram and control circuit diagram of an automatic star delta starter are explained below.
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The power ratio between star to delta is1:3. in operation, the main. The power ratio in the circuit if the star 1 the delta will be3 and the calculation answer above by another college and for me i remamber only1/3.
St3p star delta timer relay 1.model explain:
14+ Star Delta Power Circuit. The star contactor serves to initially short the secondary terminal of the motor u2, v2, w2 for the start sequence during the initial run of the motor from standstill. C.b = general circuit breaker. Star delta motor control power circuit. Answer added by maher alasli, service engineer , united weavers 6 years ago.
