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The stator coils of the motor are connected in star configuration at the time of power-on and switched to delta configuration when the motor reaches 3/4th of its full speed, after the stator coils have developed sufficient back electromagnetic force (emf).
The 3 phase induction motor starter circuit presented here offers two main advantages: single-phase prevention and automatic star-to-delta conversion.
It can be used only with those motors which are rated for connection in delta configuration at the given line voltage and which have both ends of each of the three stator windings available individually.
Product added date: 2018-07-02 10:25:54
Product modified date: 2018-07-02 10:38:05
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