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Wound rotor induction motor serial resistor step-down start-

2016-09-01 19:02  
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Wound rotor induction motor serial resistor step-down start-up circuit
The circuit is as shown. Three time relays 1KT, 2KT and 3KT are used to automatically remove the rotor windings with three resistors of 1R, 2R and 3R. As a result, the purpose of automatically started to run has been achieved.