Automatically series resistor start three-phase motor circuit

Published:2012/10/11 21:07:00 Author:Ecco | Keyword: Automatically , series, resistor , start , three-phase motor | From:SeekIC

Pressing start button ST, the AC contactor 1KM and time relay KT get electric and action, normally open contact 1KM is closed and self-locked, the main contact 1KM action makes motor stator winding connect to resistor group R in series, motor M buck starts. At the same time, KT starts timing. When KT delay reaches the setting time, KT normally open contact close with a delay time, and 2KM coil gets electric, its main contacts 2KM action, then resistor R is shorted connected, the stator windings of the motor will be put into the rated voltage operation.



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