Motor starting auto transformers for on-line starting of motors are simple and economical. Offering maximum starting acceleration and torque. auto transformer overcomes the two major limitations of on-line starters high starting current and high starting torque.
Why auto transformer starter used?
Full voltage starting of motors can produce voltage flicker, mechanical stress to gear boxes or belt drive systems and create pressure surges or water hammer in pumping applications. Starting a motor at reduced voltage can help reduce or overcome these problems. If the load cannot be accelerated to full speed using full voltage and current, it cannot be accelerated to full speed using reduced voltage and current.
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