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from i get more information abt drives..........????????? ????? ????  

Asked in Computers & Technology at 4:36 PM on June 25, 2008

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archita
archita
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what mean by ac and dc drives???????????

hai archita,ac drive means operate with a current that alternates in the direction of flow 60 times per second HZ. If this frequency of alternation is changed, the speed of the motor changes. By controlling the AC frequency with a variable frequency drive, you control speed. A proper voltage to frequency ratio V/HZ must be supplied. For most industrial motors manufactured in the US this ratio is 460

Posted in Computers & Technology by archita at 3:18 AM on June 30, 2008
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